Exhibit 10.10


                   MAINTENANCE AND PROVISIONING SERVICES AGREEMENT

     This MAINTENANCE AND PROVISIONING SERVICES AGREEMENT (the "Maintenance
Agreement") is made and entered into as of the 29th day of April, 1998
(the "Effective Date"), by and between PATHNET, INC. (hereinafter "Pathnet"), a
Delaware corporation, having its principal place of business at 1015 31st
Street, NW, Washington, DC 20007 and NORTHERN BORDER PIPELINE COMPANY
(hereinafter, "Incumbent"), a Texas general partnership of 1111 South 103rd
Street, Omaha, Nebraska, 68124 (collectively, the "Parties" and each, a
"Party").

                                 W I T N E S S E T H:

     WHEREAS, Pathnet is engaged in the business of creating high-capacity,
digital microwave communications systems for purposes of marketing the long
distance telecommunications capacity created by such systems;

     WHEREAS, Incumbent and Pathnet have entered into a Fixed Point Microwave
Services Agreement pursuant to which, among other things, Pathnet has agreed to
construct and install a high-capacity digital microwave system utilizing
Incumbent's microwave telecommunications assets;

     WHEREAS, Pathnet wishes to engage the services of Incumbent to provide
routine and corrective maintenance and provisioning services on Incumbent's
Equipment and System and to maintain Incumbent's Segment of the Pathnet network
at a minimal level of acceptability to ensure overall effective operations;

     WHEREAS, Incumbent wishes to perform Maintenance and Circuit Provisioning
for such System for Pathnet,

     NOW, THEREFORE, in consideration of the mutual promises contained herein,
the parties agree as follows:


1.   DEFINITIONS

     1.1  CERTAIN DEFINITIONS
     
          1.1.1     "BUILD-OUT PERIOD" shall mean the period of time between
          final design approval and final testing and acceptance during which
          the Initial System is installed. 


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          1.1.2     "CIRCUIT PROVISIONING" shall mean the wiring, circuit pack
          placement and coordinated testing to ensure that DS-1 and/or DS-3
          service requests meet technical operating services standards.

          1.1.3     "CRITICAL SERVICE LEVELS" shall mean the service levels and
          standards of operations set forth in Schedule B that are essential for
          Pathnet to provide reliable, error free traffic to IXCs or other
          customers for capacity.

          1.1.4     "DISPATCH CHARGE" shall mean the per Circuit Provisioning
          dispatch fee paid by Pathnet to Incumbent upon successful completion
          of a Circuit Provisioning dispatch.

          1.1.5     "EQUIPMENT" shall mean any and all digital microwave radios,
          radio components, cards, antennas, waveguides, multiplexers (OC-3 to
          DS-1) and other equipment or parts as required for the operation of
          the System provided and installed by Pathnet and subject to
          Incumbent's Maintenance obligations under this Maintenance Agreement.

          1.1.6     "FACILITIES" shall mean the Incumbent's towers, buildings
          and sites used for the purpose of operating the microwave
          communications System described in Schedule F to this Maintenance
          Agreement.

          1.1.7     "FIELD TECHNICIAN" shall mean Incumbent's operator's
          employees, agents or subcontractors certified by Pathnet to provide
          Maintenance, pursuant to this Maintenance Agreement, as they may
          change and be recertified from time to time.

          1.1.8     "FORCE MAJEURE" shall mean an event as defined in Section
          14.3 of this Maintenance Agreement.

          1.1.1     "FPM AGREEMENT" shall mean the Fixed Point Microwave
          Services Agreement by and between Pathnet and Incumbent, dated October
          17, 1997.

          1.1.9     "INITIAL SYSTEM" shall mean the initial system with a 1 x 1
          configuration which is comprised of the first 85 DS-1's (which is
          equivalent to 2,040 DS-0's) of the System and the System's 85 DS-1
          protect channels.

          1.1.10    "MAINTENANCE" shall mean the ongoing and scheduled
          inspections, ongoing and scheduled repair, ongoing and scheduled
          prevention of repair, and unscheduled, on-call corrective action of
          any and all Equipment necessary for the System to operate in
          accordance with the Performance Standards as set forth in this
          Agreement and its Schedules.

          1.1.11    "MAINTENANCE AND PROVISIONING TEST EQUIPMENT" shall mean
          used or owned equipment (including methods and tools) required to test
          and maintain the 


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          Equipment and System in accordance with the Performance Standards of
          this Agreement and its Schedules.

          1.1.12    "MONTHLY SERVICES CHARGE" shall be as set forth in Section 6
          and Schedule C of this Maintenance Agreement.

          1.1.13    "NETWORK MONITORING CENTER" shall mean the center
          established by Pathnet to monitor Incumbent's System and other Systems
          comprising the Pathnet network.

          1.1.14    "NON-INCUMBENT SITE" shall mean sites not owned or leased by
          Incumbent and not part of the Incumbent System.

          1.1.15    "OUTAGE" shall mean any unscheduled interruption in
          telecommunication services along the Segment that occurs after ten
          (10) consecutive severely errored seconds have occurred.  (Outage is
          usually measured in outage seconds.)

          1.1.16    "PASS-THROUGH EXPENSES" shall mean Incumbent's reasonable
          and actual out-of-pocket expenses required to operate the System to be
          paid and reimbursed by Pathnet that are outside of (i) the Services
          obligations and costs paid to  Incumbent pursuant to this Maintenance
          Agreement or (ii) the scope of the services to be provided pursuant to
          this Maintenance Agreement.

          1.1.17    "PATH" shall mean the physical spatial separation between
          point-to-point towers, housing and microwave antenna.

          1.1.18    "PERFORMANCE STANDARDS" shall mean individually and
          collectively the quantitative and qualitative performance standards
          and commitments for the services contained in this Maintenance
          Agreement, including, but not limited to,  the Critical Service
          Levels.

          1.1.19    "PREVENTIVE MAINTENANCE" shall mean the ongoing and
          scheduled Maintenance required for the normal operations of the
          Equipment and System, as more fully described in Schedule A.

          1.1.20    "REMEDIAL MAINTENANCE" shall mean unscheduled, on-call
          Maintenance (i) to correct an Outage, (ii) to restore operations to
          above Critical Service Levels, or (iii) to restore the Equipment and
          the System to good operating condition, as more fully described in
          Schedule A.

          1.1.21    "SERVICES" shall be as defined in Section 3 and Schedule A
          of this Maintenance Agreement.


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          1.1.22    "SITE" shall mean a physical location on which a tower or
          other structure is located which houses such microwave antenna, radios
          and other communications equipment.

          1.1.23    "SPARE PARTS" shall mean equipment and parts provided by
          Pathnet to Incumbent pursuant to the performance of Incumbent's
          maintenance obligations hereunder.

          1.1.24    "STOCKING DEPOT" shall mean an enclosed and reasonably
          protected storage facility required for housing the Spare Parts
          inventory.

          1.1.25    "SYSTEM" shall mean the high-capacity digital SONET
          microwave radio equipment (6 GHz/30 MHz) antenna, waveguides,
          components, Facilities and FCC licenses, installed and assembled
          capable of transmitting, receiving and transporting telecommunications
          signals over the segment, as set forth in Schedule F.

          1.1.26    "WORK ORDER" shall mean an order for Circuit Provisioning
          sent electronically or by facsimile by Pathnet to Incumbent.

     1.2  OTHER TERMS

     Capitalized terms used in this Maintenance Agreement but not defined herein
     shall have the definitions set forth in the FPM Agreement unless the
     context dictates otherwise.  References herein to Schedules are to the
     Schedules attached to this Maintenance Agreement unless otherwise
     specified.  Other Terms used in this Maintenance Agreement are defined in
     the context in which they are used and shall have the meaning, there
     indicated.


2.   TERM

     2.1  TERM

     The term of this Maintenance Agreement shall be one (1) year from the
     Effective Date (the "Term").  The Services and charges for the Services
     shall commence upon the receipt of common carrier licenses for the Initial
     System on any Segment.  Commissioning of the Initial System shall occur as
     agreed upon by Pathnet and Incumbent pursuant to the acceptance procedures
     of the FPM Agreement.

     2.2  EXTENSION

     This Maintenance Agreement shall be renewed automatically for successive,
     one-year renewal terms and shall terminate upon expiration of the
     Agreement; provided that (i) Incumbent does not give Pathnet notice at
     least ninety (90) days before expiration of the 


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     term indicating that Incumbent will terminate this Maintenance Agreement
     for convenience, pursuant to Section 9.2 hereof; (ii) Pathnet does not
     provide notice to Incumbent that Pathnet will not renew the contract due to
     Incumbent's failure to perform the Services pursuant to Section 7.2 hereof;
     or (iii) either Party does not terminate this Maintenance Agreement for
     cause pursuant to Section 9.1 hereof.


3.   SERVICES

     3.1  PROVISION OF SERVICES

          3.1.1     GENERAL.  Upon receipt of the common carrier licenses for
          the Initial System, Incumbent shall provide the following Maintenance
          and Circuit Provisioning services, functions and responsibilities on
          the Equipment and at the Facilities, as such Equipment may evolve or
          be supplemented, enhanced, modified or replaced during the Term (the
          "Services"):

               the services, functions and responsibilities described in this
               Maintenance Agreement and its Schedules; and

               the services, functions and responsibilities performed by
               Incumbent's personnel and Subcontractors during the twelve (12)
               months preceding the Effective Date who were responsible for
               maintaining the Incumbent's existing telecommunications system,
               even if the service, function or responsibility is not
               specifically described in this Maintenance Agreement.

               upon execution of this Maintenance Agreement and prior to the
               Commissioning of the Initial System, Incumbent shall continue to
               perform the maintenance duties on the Facilities during the
               Build-out Period, as performed during the twelve (12) months
               preceding the Effective Date.

          3.1.2     IMPLIED SERVICES.  If any services, functions or
          responsibilities not specifically described in this Maintenance
          Agreement are mutually agreed to be required for the proper
          performance and provision of the Services, they shall be deemed to be
          implied by and included within the scope of the Services to the same
          extent and in the same manner as if specifically described in this
          Maintenance Agreement.  Except as otherwise expressly provided in this
          Maintenance Agreement, Incumbent shall be responsible for providing
          the facilities, personnel and other resources required to perform the
          Services.


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     3.2  SERVICES REQUIREMENTS

          3.2.1     TIMING OF SERVICE.


               GENERAL.  Incumbent shall perform all Services in at least the
               intervals and time periods set forth in Schedule A.

               OUTAGE, CRITICAL SERVICE LEVELS, OTHER ADVERSE IMPACTS.  In the
               event of an (i) Outage, (ii) degradation of the System's
               operation below Critical Service Levels, or (iii) any other
               problem that threatens to adversely impact the System or the
               integrity of the System, Incumbent shall be on-site at any
               Incumbent Facility as required to provide Remedial Maintenance
               within two (2) hours of receipt of a Trouble Ticket and shall
               repair the System to normal operations within a cumulative mean
               time of four (4) hours after the receipt of a Trouble Ticket. 
               Notwithstanding the foregoing, Incumbent shall make reasonable
               efforts to ensure that all capacity is restored to service as
               promptly as practical in order to restore service after an
               Outage.

               CIRCUIT PROVISIONING.  Upon receipt of a Work Order, Incumbent
               shall dispatch a Field Technician to perform the work function by
               the required date designated in the Work Order.

          3.2.2     DISPATCH AND NOTIFICATION.

               DISPATCH.  Incumbent shall make Field Technicians available to
               provide Services twenty-four (24) hours a day, seven (7) days a
               week.  Pathnet shall provide System monitoring from the Network
               Monitoring Center twenty-four (24) hours a day, seven (7) days a
               week for reporting of System failures.  Incumbent must include in
               Exhibit A-1 to Schedule A procedures and personnel involved,
               including an escalation list of individuals responsible for
               repairing the System to normal operations, in the event of a
               Field Technician dispatch which procedures shall be approved by
               Pathnet.

               NOTIFICATION.  Notification of a Trouble Ticket shall be deemed
               to be received by Incumbent upon initiation by Pathnet through
               the Network Monitoring Center and electronic or facsimile receipt
               by Incumbent.  The Network Monitoring Center shall initiate a
               Trouble Ticket pursuant to the procedures set forth in Section
               3.2.7 of Schedule A.

     3.3  SERVICES EXCLUSIONS

          3.3.1     TOWERS AND SHELTERS.  Except as provided in the Section 2 of
          Schedule A, this Maintenance Agreement does not include maintenance
          obligations for any tower, tower lighting, FCC or FAA tower regulatory
          requirement or equipment 


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          shelter which shall be owned and maintained by Incumbent outside of
          the scope of this Maintenance Agreement; provided, however, that
          Incumbent shall maintain such towers and shelters as required to
          support the continuous and reliable operation of the System and
          network without material degradation to either the Equipment or
          System. 

          3.3.2     OTHER EXCLUSIONS.  In the event that telephone lines,
          equipment or interconnections provided by or required by third parties
          are used in conjunction with Pathnet's Equipment, Incumbent shall have
          no maintenance obligation or responsibility for such telephone lines
          or third-party equipment.  Incumbent shall, upon request by Pathnet,
          assist in repairing those lines so all equipment and systems are
          operational; provided that Pathnet shall adjust the Monthly Service
          Charge pursuant to Section 5.4 of this Maintenance Agreement to
          reflect such additional Services.


4.   EQUIPMENT; FACILITIES

     4.1  EQUIPMENT

     The Equipment may change or may be replaced, modified, or enhanced over
     time as a result of new technology; provided that Pathnet shall provide
     written notice to Incumbent of any such change or replacement.  In the
     event of a Capacity Expansion under the Agreement, the Equipment shall
     include any additional Equipment required for such Capacity Expansion.

     4.2  SPARE PARTS; REPLACEMENT EQUIPMENT

          4.2.1     SPARE PARTS.  Pathnet shall provide and Incumbent shall
          store Spare Parts to the Equipment at the Stocking Depot in the type
          and quantity as agreed upon and as set forth in Schedule E; provided
          that Incumbent may supplement the Spare Parts beyond Incumbent's
          designated allocation of Spare Parts at its sole discretion.  Such
          supplemental spare parts shall be provided by Pathnet.  Incumbent
          shall store such Spare Parts beyond Pathnet's designated allocation of
          Spare Parts at appropriate depots to allow for a reasonable response
          within the time parameters set forth in Section 3.2 and Schedule A of
          this Maintenance Agreement.  Pathnet, through the Network Management
          Center, shall assist Incumbent in identifying modules or Spare Parts
          necessary to expedite any required repairs.  Incumbent shall utilize
          the modular exchange program that Pathnet has established in order to
          maintain an adequate inventory of Spare Parts.  Incumbent shall be
          responsible for notifying Pathnet of any shortages in type or
          quantities of Spare Parts required to meet Incumbent's obligations to
          provide Services under this Maintenance Agreement; provided that
          Pathnet shall ship any such requested Spare Parts in accordance with
          the Spare Parts shipping procedures set forth in Schedule G.


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          4.2.2     REPLACEMENT EQUIPMENT.  At its sole discretion, Pathnet may
          replace any Equipment, provided that such Equipment does not
          materially degrade the Initial System and Pathnet provides reasonable
          notice of such replacement to Incumbent.  Upon reasonable notice to
          Incumbent that any such Equipment requires replacing, Incumbent shall
          be responsible for providing the labor and other associated costs of
          installing any such Equipment, pursuant to any Monthly Services Charge
          adjustment set forth in Section 5.4 of this Maintenance Agreement.

     4.3  FACILITIES

     Incumbent shall be responsible for performing the Services at the
     Facilities as set forth in Schedule F, as such Facilities may be amended
     from time to time.  Pursuant to the Agreement, the Facilities shall be
     maintained at the environmental conditions necessary to support the
     Equipment, in accordance with the manufacturers' specifications set forth
     in the Agreement.

5.   CHARGES

     5.1  GENERAL

     All Monthly Services Charges to be paid by Pathnet to Incumbent upon
     receipt of FCC common carrier licenses on any Segment are set forth in this
     Section 5 or in Section 2.1 of Schedule C.  Pathnet shall not be required
     to pay Incumbent any amounts for the Services in addition to those payable
     to Incumbent under this Section 5 or Schedule C, except as provided for in
     Section 2.2 of Schedule C.

     5.2  PASS-THROUGH EXPENSES

     Pass-Through Expenses shall be paid directly by Pathnet or through
     Incumbent upon Pathnet's prior approval and acceptance of such Pass-Through
     Expenses.  If the Parties agree that a particular Pass-Through Expense is
     to be paid by Pathnet directly, Incumbent shall promptly provide Pathnet
     with the original invoice for such expense. 

     5.3  TAXES

     The Parties' respective responsibilities for taxes arising under or in
     connection with this Maintenance Agreement shall be as follows:

          5.3.1     Each Party shall be responsible for any personal or real
          property taxes on property it owns or leases, for franchise and
          privilege taxes on its business, and for taxes based on its net income
          or gross receipts.


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          5.3.2     Pathnet shall be responsible for any sales, use, excise,
          value-added services, consumption, and other taxes and duties payable
          by Incumbent on any goods or services used or consumed in providing
          the Services, where the tax is imposed on Incumbent's acquisition or
          use of such goods or services and the amount of tax is measured by
          Incumbent's costs in acquiring such goods or services; provided,
          however, that Pathnet shall not be responsible for any Federal, state
          or local income taxes of Incumbent or franchise taxes.  Pathnet will
          pay the applicable taxes levied directly on fees paid to Incumbent for
          the Services as defined in Section 5 or in Section 2.1 of Schedule C.

     5.4  NEW SERVICES

     Pathnet shall pay Incumbent for the performance of any new Services
     requested by Pathnet and accepted by Incumbent outside of the core Services
     for maintenance or provisioning.  Pathnet shall pay for such new Services
     as agreed upon by the Parties based on the procedures set forth in Section
     2.4 of Schedule C.  Such new Services may include, without limitation:  (i)
     performance of Maintenance services at the interconnection facilities
     between Pathnet's network and the System, (ii) cost of Equipment removal
     upon Pathnet's termination of this Maintenance Agreement, or (iii) any
     other services not included in the Services as defined in this Agreement.


6.   INVOICING AND PAYMENT

For all charges pursuant to Schedule C, Incumbent shall send Pathnet a monthly
invoice covering the fees and charges for the prior months' Services.  Subject
to Section 7.2.1, Pathnet shall pay the amount of each monthly invoice within
thirty-five (35) days of date of invoice.  Such amount shall be due and payable
whether or not the Equipment is operating.  Any and all disputes with regard to
charges payable under this Maintenance Agreement shall be settled in accordance
with the Section 15 of this Agreement.


7.   PERFORMANCE STANDARDS 

     7.1  GENERAL

     Incumbent shall perform the Services at least to the level and degree of
     accuracy, quality, completeness, timeliness, responsiveness and efficiency
     as set forth in the Critical Service Levels in Schedule B.  At all times,
     Incumbent's level of performance shall meet Performance Standards as
     identified in this Maintenance Agreement and its Schedules and shall be
     consistent with industry standards.


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     7.2  FAILURE TO PERFORM

          7.2.1     Incumbent recognizes that its failure (i) to meet any
          Critical Service Level, (ii) correct any Outage, (iii) remedy any
          other problem that threatens to adversely impact the operation of the
          System or (iv) perform Circuit Provisioning in a timely manner may
          have a material adverse impact on the business and operations of
          Pathnet.  Accordingly, in the event that Incumbent on more than one
          occasion during the term of this Agreement (i) fails to meet any
          Critical Service Level, (ii) correct any Outage, (iii) remedy any
          other problem that threatens to adversely impact the operation of the
          System or (iv) perform Circuit Provisioning in a timely manner for
          reasons other than the wrongful actions of Pathnet or circumstances
          that constitute Force Majeure under this Maintenance Agreement,
          Pathnet, at its sole discretion, may elect (i) to not renew this
          Maintenance Agreement or (ii) to supplement the provision of Services
          as provided by Incumbent by appointing a new Maintenance provider, or
          (iii) to suspend payment of the Monthly Services Charges.

          7.2.2     In the event of any problem affecting the operation of the
          System (including, without limitation, the events listed in Section
          7.2.1), Incumbent shall (i) investigate and report to Pathnet the
          causes of such problem or in the event of an Outage; (ii) advise
          Pathnet of the status of remedial efforts being undertaken with
          respect to such problems; (iii) correct the problem as soon as
          practical and restore the System's operation to the Critical Service
          Levels; and (iv) take appropriate preventive measures so that the
          problem does not recur.

          7.2.3     Subject to the provisions of Section 5.4 of the Fixed Point
          Microwave Service Agreement, Pathnet or its designee shall have the
          right to free, full and immediate access to any and all affected
          Facilities to repair, replace, update, or otherwise modify the
          Equipment or System and to supplement the Services (including
          provisioning or other Services required to operate the Pathnet
          network); provided such supplemental Maintenance will not degrade the
          operation of the Initial System.  Upon Pathnet's prior notification,
          Incumbent shall reasonably cooperate with Pathnet or its designee,
          including providing any escorts necessary for Pathnet to supplement
          the Services.  

          7.2.4     In the event Pathnet either (i) does not renew this
          Agreement or (ii) supplements the Services, Incumbent shall have the
          right to continue to maintain the Initial System at Incumbent's sole
          expense, so long as such maintenance shall not impact Pathnet's
          ability to maintain the System.


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8.   PERIODIC REVIEWS; AUDIT RIGHTS; SAVINGS CLAUSE

     8.1  REVIEWS

          8.1.l     ANNUAL REVIEW.  As part of the annual renewal of this
          Maintenance Agreement, Pathnet and Incumbent may review the Critical
          Service Levels and the Monthly Service Charges paid to Incumbent. 
          Pathnet and Incumbent shall mutually agree to make adjustments to the
          Critical Service Levels, as appropriate, to reflect (i) improved
          performance capabilities associated with advances in technology and
          methods to perform the Services and (ii) modifications in the
          performance requirements of Pathnet's Customer.  The Parties expect
          and understand that the Critical Service Levels may improve over time.
          Pathnet and Incumbent shall make adjustments pursuant to Schedule C to
          the Monthly Service Charges to reflect the material changes in the
          performance of the Services in accordance with any such revised
          Critical Service Levels.

          8.1.2     MAINTENANCE AND PROVISIONING TEST EQUIPMENT.  Incumbent
          shall obtain and utilize the necessary measurement and monitoring
          tools and procedures, including, but not limited to, the Maintenance
          and Provisioning Test Equipment as set forth in Exhibit E-1 to
          Schedule E and other equipment necessary to measure and to report
          operational performance of the System against the applicable Critical
          Service Levels.  Such measurement and monitoring tools and equipment
          shall permit reporting at a level of detail sufficient to verify
          compliance with Critical Service Levels and shall be reviewable by
          Pathnet upon reasonable notice.  Upon request by Pathnet, Incumbent
          shall provide Pathnet with information and access to such tools and
          procedures for purposes of verification.

     8.2  AUDIT AND INSPECTION RIGHTS

          8.2.1     Incumbent shall maintain accurate log and dispatch reports,
          recording any reported Outages or operations below Critical Service
          Levels and the appropriate actions taken to restore service.  Pathnet
          shall have the right to audit any and all log and dispatch reports
          related to the maintenance and provisioning of the System.  These
          reports shall be available to Pathnet for its inspection at
          Incumbent's Facilities and a copy of the compilation of these reports
          is to be forwarded to Pathnet on a quarterly basis.

          8.2.2     Subject to Section 7.2.3 of this Maintenance Agreement and
          no more than once each annual period, Pathnet shall have the right to
          inspect the Facilities and Equipment Maintenance and Circuit
          Provisioning at any time upon reasonable notice to Incumbent and to
          supplement such Services during Pathnet's inspection; provided Pathnet
          complies with any and all Incumbent security procedures.


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     8.3  SAVINGS CLAUSE

     Pathnet's failure to perform any of its responsibilities set forth in this
     Agreement (other than as provided in Section 9.1.2) shall not be deemed to
     be grounds for non-performance by Incumbent; provided, however, that
     Incumbent's non-performance of its obligations under this Agreement shall
     be excused if, and to the extent, (i) such Incumbent non-performance
     results from Pathnet's failure to perform its responsibilities, and (ii)
     Incumbent provides Pathnet with reasonable notice of such non-performance
     and uses commercially reasonable efforts to perform, notwithstanding
     Pathnet's failure to perform (with Pathnet  reimbursing Incumbent for its
     additional Pass-Through Expenses for such efforts).


9.   TERMINATION

     9.1  TERMINATION FOR CAUSE

          9.1.1     In the event that Incumbent:  (i) commits a material breach
          of this Maintenance Agreement, which breach is not cured within thirty
          (30) days after notice of breach from Pathnet to Incumbent or (ii)
          commits numerous breaches of its duties or obligations which
          collectively constitute a material breach of this Maintenance
          Agreement, Pathnet may, by giving reasonable written notice to
          Incumbent, terminate this Maintenance Agreement, in whole or in part,
          as of the date specified in the notice of termination.  If Pathnet
          chooses to terminate this Maintenance Agreement in part, the charges
          payable to Incumbent under this Maintenance Agreement will be
          equitably adjusted to reflect those services that are terminated.

          9.1.2     In the event that Pathnet fails:  (i) to pay Incumbent
          undisputed charges due under this Agreement totaling at least Five
          Thousand ($5,000) Dollars and fails to make such payment within thirty
          (30) days of notice from Incumbent of the failure to make such payment
          or (ii) upon thirty (30) days prior written notice from Incumbent to
          Pathnet otherwise fails to fulfill its obligations, Incumbent may, by
          giving written reasonable notice to Pathnet, terminate this
          Maintenance Agreement as of the date specified in the notice of
          termination.

     9.2  TERMINATION FOR CONVENIENCE

     Incumbent may terminate this Maintenance Agreement for convenience and
     without cause at any time by giving Pathnet at least one hundred and twenty
     (120) days' prior written notice before the end of the Term of this
     Maintenance Agreement indicating that Incumbent will not renew this
     Maintenance Agreement; provided, however, that Pathnet, its Affiliates,
     agents or Subcontractors may, at Pathnet's sole discretion, supplement or
     perform the Services set forth in this Maintenance Agreement.  Pathnet, its
     Affiliates, agents or 


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     Subcontractors shall comply with all Incumbent security and site access
     procedures and meet Incumbents insurance requirements.

     9.3  TERMINATION OR EXPIRATION ASSISTANCE

     In the event (i) Incumbent terminates this Maintenance Agreement for
     convenience; (ii) Pathnet does not renew this Maintenance Agreement because
     of Incumbent's failure to perform, or (iii) the Maintenance Agreement
     expires, Pathnet shall propose and Incumbent shall approve, which approval
     shall not be unreasonably withheld, a third-party, independent Maintenance
     and Circuit Provisioning provider, at least forty-five (45) days before
     termination or expiration of the Agreement to provide the Services at
     Incumbent's Facilities.  Such independent Maintenance and Circuit
     Provisioning provider shall assume the obligation of Incumbent for any
     successive terms coterminous with the remaining term of the Agreement,
     unless such provider is replaced by Pathnet before the expiration of the
     term of this Maintenance Agreement or any extension thereof.  In the event
     either Party terminates this Agreement for cause, Pathnet shall provide a
     third-party Maintenance and Circuit Provisioning provider to perform the
     Services, and Incumbent shall reasonably cooperate with such provider. 
     Upon termination for any reason or expiration of this Maintenance
     Agreement, Pathnet shall have the right to full and free access to all
     Facilities, provided it complies with Incumbent security procedures, to
     supplement or perform the Services in accord with the Performance
     Standards.


10.  RELATIONSHIP OF THE PARTIES

Nothing in this Maintenance Agreement will imply a joint venture, partnership,
or principal-agent relationship between the Parties.  Neither Party will have
any right, power or authority to act or create any obligation, express or
implied, on behalf of the other Party, pursuant to this Maintenance Agreement.


11.  PROPRIETARY RIGHTS AND COPYRIGHTS

     11.1 Maintenance software, training materials, manuals or other proprietary
     information furnished by Pathnet ("Maintenance Aids") for Incumbent's use
     are either Pathnet's property or property of third parties and are
     proprietary.  Incumbent agrees to keep such Maintenance Aids confidential
     and to use its best efforts to prevent the unauthorized disclosure and use
     of such Maintenance Aids.

     11.2 Incumbent agrees to use its best efforts not to allow copies of any
     Maintenance Aids furnished by Pathnet to be made without the prior written
     consent.  Incumbent may make necessary copies of Maintenance Aids installed
     as part of its providing the Services subject to Incumbent's obligations
     under this Agreement.


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12.  REPRESENTATIONS AND WARRANTIES

     12.1 WORK STANDARDS

     Incumbent represents and warrants that the Services shall be rendered with
     promptness and diligence and shall be executed in a workmanlike manner, in
     accordance with the practices and high professional standards used in
     well-managed commercial telecommunications operations performing services
     similar to the Services.  Incumbent represents and warrants that it shall
     use adequate numbers of qualified individuals with suitable training,
     education, experience, and skill to perform the Services.

     12.2 MAINTENANCE

     Incumbent represents and warrants that it shall perform Maintenance and
     Circuit Provisioning on the Equipment so that it operates in accordance
     with the specifications included in Schedule B, such as (i) maintaining
     equipment in good operating condition, subject to normal wear and tear,
     (ii) undertaking repairs and preventive maintenance on Equipment, and (iii)
     performing Circuit Provisioning in accordance with the applicable Equipment
     manufacturers' recommendations.

     12.3 EFFICIENCY AND COST EFFECTIVENESS

     Incumbent represents and warrants that it shall use its best efforts to use
     efficiently the resources or services necessary to provide the Services. 
     Incumbent represents and warrants that it shall use its best efforts to
     perform the Services in the most cost-effective manner consistent with the
     required level of quality and performance as set forth in this Agreement.

     It has the requisite corporate or partnership power and authority to enter
     into this Maintenance Agreement and to carry out the transactions
     contemplated by this Maintenance Agreement; and

     The execution, delivery and performance of this Maintenance Agreement and
     the consummation of the transactions contemplated by this Maintenance
     Agreement have been duly authorized by the requisite corporate or
     partnership action on the part of such Party.

     12.5      INSURANCE

     Incumbent and Pathnet and any subcontractors engaged by Pathnet will comply
     with all of the provisions of Section 11 of the FPM Agreement, except that
     with respect to the Workman's Compensation insurance, Northern Border shall
     be an additional insured on Pathnet's coverage.


                                          14


     12.6 SECURITY AND SAFETY PROCEDURES

     In the event Pathnet is required to supplement the Services, Pathnet shall
     comply with all reasonable Incumbent security and safety procedures as
     provided by the Incumbent in fulfilling its obligations.

     12.7      DISCLAIMER

     EXCEPT AS PROVIDED IN THIS MAINTENANCE AGREEMENT, THERE ARE NO OTHER
     EXPRESS WARRANTIES AND THERE ARE NO IMPLIED WARRANTIES, INCLUDING THE
     IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     ON THE PART OF EITHER PARTY.


13.  INDEMNITIES

     13.1 INDEMNIFICATION BY INCUMBENT

     Incumbent agrees to indemnify, defend and hold harmless Pathnet and its
     Affiliates and their respective officers, directors, employees, agents,
     successors and assigns from and against any and all Losses and threatened
     Losses arising from, in connection with, or based on allegations of, any of
     the following:

          (a)  Any claims of infringement of any patent, trade secret, copyright
               or other proprietary rights alleged to have occurred because of
               systems or other resources provided to Pathnet by Incumbent.

          (b)  The untruth, inaccuracy or breach of any representation or
               warranty of Incumbent set forth in this Agreement.

          (c)  The liability of Pathnet for (i) any personal injury, disease or
               death of any Person, (ii) damage to or loss of any property,
               money damages or specific performance owed to any Person (by
               contract or operation of law), or (iii) any fines, penalties,
               taxes, claims, demands, charges, actions, causes of action,
               assessments, environmental response costs, environmental
               penalties, injunctive obligations caused by, arising out of, or
               in any way incidental to, or in connection with, actions or
               omissions of Incumbent, its employees, Subcontractors or agents.

     13.2 INDEMNIFICATION BY PATHNET

     Pathnet agrees to indemnify, defend and hold harmless Incumbent, its
     Partners, Operator and Affiliates and their respective officers, directors,
     employees, agents, successors and 


                                          15


     assigns from and against any and all Losses and threatened Losses arising
     from, in connection with, or based on allegations of, any of the following:

          (a)  Any claims of infringement of any patent, trade secret, copyright
               or other proprietary rights alleged to have occurred because of
               systems or other resources provided by Incumbent to Pathnet.


          (b)  The untruth, inaccuracy or breach of any representation or
               warranty of Pathnet set forth in this Agreement.

          (c)  The liability of Incumbent for any (i) personal injury, disease
               or death of any Person, (ii) damage to or loss of any property,
               money damages or specific performance owed to any Person (by
               contract or operation of law), or (iii) any fines, penalties,
               taxes, assessments, environmental response costs, environmental
               penalties or injunctive obligations caused by, arising out of, or
               in any way incidental to, or in connection with, actions or
               omissions of Pathnet, its employees, Subcontractors or agents.

          (d)  Any Losses, causes of action or suits arising out of Customer
               Agreements.

     13.3 INDEMNIFICATION PROCEDURES

     With respect to any claims for which the obligation to indemnify shall
apply, the following procedures shall apply:

          13.3.1    NOTICE.  Promptly after receipt by an entity entitled to
          indemnification under Section 13.1 or Section 13.2 of notice of the
          commencement or threatened commencement of any civil, criminal,
          administrative or investigative action or proceeding involving a claim
          in respect of which the indemnitee will seek indemnification pursuant
          to any such Section, the indemnitee shall notify the indemnitor of
          such claim in writing.  No failure to so notify an indemnitor shall
          relieve it of its obligations under this Agreement except to the
          extent that it can demonstrate damages attributable to such failure. 
          Within fifteen (15) days following receipt of written notice from the
          indemnitee relating to any claim, but no later than ten (10) days
          before the date on which any response to a complaint or summons is
          due, the indemnitor shall notify the indemnitee in writing if the
          indemnitor elects to assume control of the defense and settlement of
          that claim (a "NOTICE OF ELECTION").

          13.3.2    PROCEDURE FOLLOWING NOTICE OF ELECTION.  If the indemnitor
          delivers a Notice of Election relating to any claim within the
          required notice period, the indemnitor shall be entitled to have sole
          control over the defense and settlement of such claim; provided that,
          (i) the indemnitee shall be entitled to participate in the defense of
          such claim and to employ counsel at its own expense to assist in the
          handling of 


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          such claim, and (ii) the indemnitor shall obtain the prior written
          approval of the indemnitee before entering into any settlement of such
          claim or ceasing to defend against such claim.  After the indemnitor
          has delivered a Notice of Election relating to any claim in accordance
          with the subsection (a) above, the indemnitor shall not be liable to
          the indemnitee for any legal expenses incurred by the indemnitee in
          connection with the defense of that claim.  In addition, the
          indemnitor shall not be required to indemnify the indemnitee for any
          amount paid or payable by the indemnitee in the settlement of any
          claim for which the indemnitor has delivered a timely Notice of
          Election if such amount was agreed to without the written consent of
          the indemnitor.

          13.3.3    PROCEDURE WHERE NO NOTICE OF ELECTION IS DELIVERED.  If the
          indemnitor does not deliver a Notice of Election relating to any claim
          within the required notice period, the indemnitee shall have the right
          to defend the claim in such manner as it may deem appropriate, at the
          cost and expense of the indemnitor.  The indemnitor shall promptly
          reimburse the indemnitee for all such costs and expenses.

     13.4 SUBROGATION

     In the event that an indemnitor shall be obligated to indemnify an
     indemnitee pursuant to Section 13.1 or Section 13.2, the indemnitor shall,
     upon payment of such indemnity in full, be subrogated to all rights of the
     indemnitee with respect to the claims to which such indemnification
     relates.


14.  LIABILITY

     14.1 GENERAL INTENT

     Subject to the specific provisions of this Article 14, it is the intent of
     the Parties that each Party shall be liable to the other Party for any
     actual damages incurred by the non-breaching Party as a result of the
     breaching Party's failure to perform its obligations in the manner required
     by this Maintenance Agreement.

     14.2      LIABILITY RESTRICTIONS

          14.2.1    SUBJECT TO SECTION 14.2.2 BELOW, IN NO EVENT, WHETHER IN
          CONTRACT OR IN TORT (INCLUDING BREACH OF WARRANTY, NEGLIGENCE AND
          STRICT LIABILITY IN TORT), SHALL A PARTY BE LIABLE TO THE OTHER PARTY
          FOR INDIRECT, CONSEQUENTIAL, EXEMPLARY, PUNITIVE OR SPECIAL DAMAGES,
          ARISING OUT OF OR IN CONJUNCTION WITH THIS MAINTENANCE AGREEMENT.


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          14.2.2    The limitations set forth in Section 14.2.1 shall not apply
          with respect to (i) damages occasioned by willful misconduct or gross
          negligence of a Party or (ii) damages occasioned by a breach of
          Section 16.7.

          14.2.3    Pathnet agrees that all claims arising from and out of the
          terms of this Agreement, shall be limited to the assets of Incumbent
          and that all rights or remedies at law or in equity against
          Incumbent's partners by Pathnet, its successor, assigns and
          representatives are hereby expressly waived.

     14.3 FORCE MAJEURE

          14.3.1    No Party shall be liable for any default or delay in the
     performance of its obligations under this Maintenance Agreement (i) if and
     to the extent such default or delay is caused, directly or indirectly, by: 
     fire, flood, earthquake, elements of nature or acts of God, riots, civil
     disorders, rebellions or revolutions in any country; or any other cause
     beyond the reasonable control of such Party (a "Force Majeure" event), (ii)
     provided the non-performing Party is without fault in causing such default
     or delay, and such default or delay could not have been prevented by
     reasonable precautions and can not reasonably be circumvented by the
     non-performing Party through the use of alternate sources, workaround plans
     or other means.

          14.3.2    In such event, the non-performing Party shall be excused
     from further performance or observance of the obligation(s) so affected for
     as long as such circumstances prevail and such Party continues to use its
     best efforts to recommence performance or observance whenever and to
     whatever extent possible without delay.  Any Party so delayed in its
     performance shall immediately notify the Party to whom performance is due
     by telephone (to be confirmed in writing within two (2) days of the
     inception of such delay) and describe at a reasonable level of detail the
     circumstances causing such delay.


15.  DISPUTE RESOLUTION

     15.1 ARBITRATION; RESOLUTION OF DISPUTES

     Except as provided in Section 9, any and all disputes and controversies
     between Incumbent and Pathnet concerning the negotiation, interpretation,
     performance, breach or termination of this Agreement (each a "DISPUTE")
     shall be subject to resolution as set forth in this Section 15.

     15.2 SETTLEMENT DISCUSSIONS

     Any Dispute shall be attempted to be resolved first through amicable
     settlement discussions and each Party shall bear its own costs of such
     settlement discussions.  Each Party hereby 


                                          18


     agrees to use good faith efforts to reach a settlement through such
     amicable settlement discussions.

     15.3 REFERRAL TO BINDING ARBITRATION

     In the event the Parties fail to reach a settlement of the Dispute pursuant
     to settlement discussions in accordance with Section 15.2, each Party shall
     have the right, but not the obligation, to refer such Dispute for final
     resolution by binding arbitration in accordance with the Center for Public
     Resources' (the "CENTER") Rules for Non-Administered Arbitration of
     Business Disputes (the "ARBITRATION RULES").

     15.4 BINDING EFFECT

     The Parties acknowledge and agree that (i) the award in any arbitration
     shall be final, conclusive and binding on the Parties and (ii) any such
     arbitration award be a final resolution of the Dispute between the Parties
     to the same extent as a final judgment of a court of competent
     jurisdiction.

     15.5 USE OF COURTS AND OTHER LEGAL REMEDIES

     Each Party covenants and agrees that it shall not resort to any court for
     legal remedies concerning any Dispute other than to enforce a final
     decision by the arbitrators or for preliminary, interim or provisional
     equitable relief in aid of arbitration.

     15.6 ARBITRATION PROCESS

          15.6.1    NOTICE.  If the Parties cannot resolve a Dispute to their
          mutual satisfaction pursuant to Section 15.2, either Party may deliver
          to the other Party a written notice in accordance with the Arbitration
          Rules.

          15.6.2    SITE AND ARBITRATION TRIBUNAL.  Absent agreement to the
          contrary by the Parties, the arbitration will be conducted in Omaha,
          NE, by a panel of three (3) arbitrators with expertise in the fields
          of telecommunications engineering and construction, PROVIDED, HOWEVER,
          in the case of particular witnesses not subject to subpoena at the
          designated hearing site, hearings may be held at any place designated
          by the arbitrators where such witnesses can be compelled to attend,
          and, with the consent of the Parties, before a single member of the
          arbitration tribunal.  Within thirty (30) days after the filing of the
          notice of arbitration, each Party must select one (1) arbitrator and a
          third arbitrator will be selected by agreement of the two (2)
          arbitrators selected by the Parties.  If either Party fails to select
          an arbitrator or there is no agreement on the selection of the third
          arbitrator, the Center will select such arbitrators.

          15.6.3    TRANSCRIPTS AND EVIDENCE.  Both Parties shall cause a
          written transcript of all proceedings and testimony to be kept and the
          cost of such transcript shall be borne 


                                          19


          equally by the Parties pending the final award.  All documents that
          either Party proposes to offer in evidence, except for those objected
          to by the other Party, shall be deemed to be self-authenticating.

          15.6.4    APPLICABLE LAW.  The arbitrator shall determine the claims
          of the Parties and render their final award in accordance with the
          governing law of this Agreement as set forth in Section 16.8.

          15.6.5    SANCTIONS.  The Parties acknowledge that, in addition to any
          other remedy allowed or specified in or under the Arbitration Rules,
          the failure of a Party to comply with any interim, partial or
          interlocutory order, after due notice and opportunity to cure such
          non-compliance, may be treated by the arbitrators as a default and all
          or some of the claims or defenses of the defaulting party may be
          stricken and partial or final award entered against such Party, as
          determined by the arbitrators in their sole discretion, sanctions as
          such arbitrators deem appropriate.

          15.6.6    LIMITATION ON AWARDS.  Notwithstanding anything set forth
          herein or in the Arbitration Rules to the contrary, arbitrators may
          not award incidental, consequential or punitive damages in the
          resolutions of any Dispute and the Parties hereby waive all rights to
          and claims for monetary awards other than compensatory damages.

          15.6.7    PERIOD OF LIMITATIONS.  In the event the Party claiming a
          Dispute does not institute binding arbitration within one (1) year
          after the commencement of settlement discussions pursuant to Section
          15.2, such Party shall forever be barred from bringing a claim on the
          specific subject matter of such Dispute.

          15.6.8    ARBITRATION AWARD.  Any arbitration award must be in writing
          and must contain findings of fact and conclusions of law upon which
          the arbitrators relied in making the decision relating to such award.

          15.6.9    ATTORNEYS FEES.  The arbitrator shall award the reasonable
          cost, including attorneys fees, to the prevailing Party.


16.  MISCELLANEOUS

     16.1 NOTICE PROVISION

     All notices pertaining to disputes arising from this Maintenance Agreement
     shall be directed to a corporate or partnership entity or employee
     designated by the signators as having full rights and responsibilities to
     address such issues.  Notices under this Maintenance Agreement shall be
     sufficient only if personally delivered by a commercial prepaid delivery or
     courier service or mailed by certified or registered mail, return receipt 


                                          20


     requested to a party at its address set forth in the signature block below
     or as amended by notice pursuant to this subsection.  If not received
     sooner, notice by mail shall be deemed received five (5) business days
     after deposit in the U.S. mail.  All notices shall be delivered as follows:

     If to Pathnet:

          Michael A. Lubin, Esquire
          Vice President and General Counsel
          Pathnet, Inc.
          1015 31st Street, NW
          Washington, DC  20007

     If to Incumbent:

          Al Behrens
          Director, Functional Strategies
          Northern Border Pipeline Company 
          1111 South 103rd Street
          Omaha, NE 68124-1000


     16.2      BINDING NATURE; ENTIRE AGREEMENT

     Pathnet and Incumbent acknowledges (i) that each has read and understands
     the terms and conditions of this Maintenance Agreement and agrees to be
     bound by such terms and conditions, (ii) that this Maintenance Agreement is
     the complete and conclusive statement of the agreement between the Parties,
     and (iii) that this Maintenance Agreement sets forth the entire agreement
     and understanding between the Parties relating to the subject matter
     hereof.  All understandings and agreements, oral and written, heretofore
     made between Incumbent and Pathnet relating to the subject matter hereof
     are merged in this Maintenance Agreement which alone, fully and completely
     expresses their agreement on the subject matter of maintenance service to
     be provided by Incumbent.  The provisions of this Maintenance Agreement are
     separate and apart from the provisions of the Agreement and may not in any
     way affect either Party's obligations with regard to the Agreement.

     This Maintenance Agreement consists of the following, all of which are
     included and by this reference made a part hereof:

          Maintenance and Provisioning Services Agreement
          Schedule A: Maintenance and Circuit Provisioning Services
          Exhibit A-1: Incumbent Dispatch Procedures
          Schedule B: Critical Service Levels
          Schedule C: Charges



                                          21


          Exhibit C-1: Incumbent Presumptive Labor and Mileage Rates
          Schedule D: Intentionally Omitted
          Schedule E: Spare Parts and Maintenance Test Equipment
          Exhibit E-1: Maintenance and Provisioning Test Equipment
          Schedule F: Incumbent Facilities and System
          Schedule G: Customer Service and Training


     16.3 AMENDMENT

     No modification of, additions to or waiver of this Maintenance Agreement
     shall be binding upon Incumbent and Pathnet unless such modification is in
     writing and signed by an authorized representative of each Party.

     16.4 SEVERABILITY

     If any term or provision of this Maintenance Agreement shall to any extent
     be held by a court or other tribunal to be invalid, void or unenforceable,
     then that term or provision shall be inoperative and void insofar as it is
     in conflict with law, but the remaining terms and provisions of this
     Maintenance Agreement shall nevertheless continue in full force and effect
     and the rights and obligations of the Parties shall be deemed to be
     restated to reflect newly as possible the original intentions of the
     Parties in accordance with applicable law.

     16.5 HEADINGS

     Section and paragraph headings used in this Maintenance Agreement are for
     reference and convenience only and are not to be deemed or construed to be
     part of this Maintenance Agreement.

     16.6      CONSENTS AND APPROVAL

     Except where expressly provided as being in the discretion of a Party,
     where agreement, approval, acceptance, consent, or similar action by either
     Party is required under this Maintenance Agreement, such action shall not
     be unreasonably delayed or withheld.  An approval or consent given by a
     Party under this Maintenance Agreement shall not relieve the other Party
     from responsibility for complying with the requirements of this Maintenance
     Agreement, nor shall it be construed as a waiver of any rights under this
     Maintenance Agreement, except as and to the extent otherwise expressly
     provided in such approval or consent.


                                          22


     16.7 COMPLIANCE WITH LAWS AND REGULATIONS

     Each Party shall perform its obligations in a manner that complies with the
     applicable Federal, state and local laws, regulations, ordinances and codes
     (including identifying and procuring required permits, certificates,
     approvals and inspections).  If a charge of non-compliance by either Party
     with any such laws, regulations, ordinances or codes occurs, the Party
     charged with such non-compliance shall promptly notify the other Party of
     such charges in writing.

     16.8 GOVERNING LAW

     This Maintenance Agreement and the rights and duties of the parties shall
     be governed and interpreted in accordance with the laws of the State of
     Nebraska, other than the choice of law rules thereof.

     16.9      BINDING NATURE AND ASSIGNMENT

     This Maintenance Agreement shall be binding on the Parties hereto and their
     respective successors and assigns.  Neither Party may or shall have the
     power to assign this Maintenance Agreement without the prior written
     consent of the other, except that either Party may assign its rights and
     obligations under this Maintenance Agreement without the approval of the
     other Party to an entity which acquires all or substantially all of the
     assets of that Party to any subsidiary or Affiliate or successor in a
     merger or acquisition of that Party; provided that in no event shall any
     such assignment relieve that Party of its obligations under this
     Maintenance Agreement.

     16.10     WAIVER

     Failure or delay on the part of Incumbent or Pathnet to exercise any right,
     power or privilege under this Maintenance Agreement shall not constitute a
     waiver of any right power or privilege of this Maintenance Agreement.

     16.11     RELATIONSHIP OF PARTIES

     Incumbent, in furnishing the services hereunder, is acting as an
     independent contractor, and Incumbent has the sole right and obligation to
     supervise, manage, contract, direct, procure, perform or cause to be
     performed all work to be performed by Incumbent under this Maintenance
     Agreement.  Incumbent is not an agent of Pathnet and has no authority to
     represent Pathnet as to any matters, except as expressly authorized in this
     Maintenance Agreement.


                                          23


     16.12     SURVIVAL

     Any provision of this Maintenance Agreement which contemplates performance
     or observance subsequent to any termination or expiration of this
     Maintenance Agreement shall survive any termination or expiration of this
     Maintenance Agreement and continue in full force and effect.

     16.13     COVENANT OF GOOD FAITH

     Each Party agrees that in its respective dealings with the other Party
     under or in connection with this Maintenance Agreement, it shall act in
     good faith.


                        [Signatures begin on following page.]













                                          24


     IN WITNESS WHEREOF, the parties hereto have executed this Maintenance  and
Provisioning Services Agreement, or caused it to be executed by a duly
authorized officer, as of the date first written above.


                                   PATHNET, INC.


                                   By: /s/ Dave Schaeffer
                                      -------------------------------
                                      Name:  Dave Schaeffer
                                      Title: Chairman


                                   NORTHERN BORDER PIPELINE COMPANY

                                   By:  Northern Plains Natural Gas Company,
                                        Operator

                                   By: /s/ G. A. Rood
                                      -------------------------------
                                         Name: G. A. Rood
                                         Title: Vice President













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