EX-99.CERT

     CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002


I, Alan M. Meder, Principal Financial Officer of Duff & Phelps Utility and
Corporate Bond Trust Inc., certify that:

1.    I have reviewed this report on Form N-CSR of Duff & Phelps Utility and
      Corporate Bond Trust Inc.;

2.    Based on my knowledge, this report does not contain any untrue statement
      of a material fact or omit to state a material fact necessary to make the
      statements made, in light of the circumstances under which such statements
      were made, not misleading with respect to the period covered by this
      report;

3.    Based on my knowledge, the financial statements, and other financial
      information included in this report, fairly present in all material
      respects the financial condition, results of operations, changes in net
      assets, and cash flows (if the financial statements are required to
      include a statement of cash flows) of the registrant as of, and for, the
      periods presented in this report;

4.    The registrant's other certifying officer(s) and I are responsible for
      establishing and maintaining disclosure controls and procedures (as
      defined in Rule 30a-3(c) under the Investment Company Act of 1940) and
      internal control over financial reporting (as defined in Rule 30a-3(d)
      under the Investment Company Act of 1940) for the registrant and have:

         (a) Designed such disclosure controls and procedures, or caused such
         disclosure controls and procedures to be designed under our
         supervision, to ensure that material information relating to the
         registrant, including its consolidated subsidiaries, is made known to
         us by others within those entities, particularly during the period in
         which this report is being prepared;

         (b) Designed such internal control over financial reporting, or caused
         such internal control over financial reporting to be designed under our
         supervision, to provide reasonable assurance regarding the reliability
         of financial reporting and the preparation of financial statements for
         external purposes in accordance with generally accepted accounting
         principles;

         (c) Evaluated the effectiveness of the registrant's disclosure controls
         and procedures and presented in this report our conclusions about the
         effectiveness of the disclosure controls and procedures, as of a date
         within 90 days prior to the filing date of this report, based on such
         evaluation; and

         (d) Disclosed in this report any change in the registrant's internal
         control over financial reporting that occurred during the second fiscal
         quarter of the period covered by this report that has materially
         affected, or is reasonably likely to materially affect, the
         registrant's internal control over financial reporting; and

5.    The registrant's other certifying officer(s) and I have disclosed to the
      registrant's auditors and the audit committee of the registrant's board of
      directors (or persons performing the equivalent functions):

         (a) All significant deficiencies and material weaknesses in the design
             or operation of internal control over financial reporting which are
             reasonably likely to adversely affect the registrant's ability to
             record, process, summarize, and report financial information; and

         (b) Any fraud, whether or not material, that involves management or
             other employees who have a significant role in the registrant's
             internal control over financial reporting.

Date:      August 31, 2005                   /s/ Alan M. Meder
    --------------------------            --------------------------------------
                                          Alan M. Meder
                                          Principal Financial Officer
                                          Duff & Phelps Utility and Corporate
                                          Bond Trust Inc.


EX-99.CERT

     CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002


I, Nathan I. Partain, Principal Executive Officer of Duff & Phelps Utility
and Corporate Bond Trust Inc., certify that:

1.    I have reviewed this report on Form N-CSR of Duff & Phelps Utility and
      Corporate Bond Trust Inc.;

2.    Based on my knowledge, this report does not contain any untrue statement
      of a material fact or omit to state a material fact necessary to make the
      statements made, in light of the circumstances under which such statements
      were made, not misleading with respect to the period covered by this
      report;

3.    Based on my knowledge, the financial statements, and other financial
      information included in this report, fairly present in all material
      respects the financial condition, results of operations, changes in net
      assets, and cash flows (if the financial statements are required to
      include a statement of cash flows) of the registrant as of, and for, the
      periods presented in this report;

4.    The registrant's other certifying officer(s) and I are responsible for
      establishing and maintaining disclosure controls and procedures (as
      defined in Rule 30a-3(c) under the Investment Company Act of 1940) and
      internal control over financial reporting (as defined in Rule 30a-3(d)
      under the Investment Company Act of 1940) for the registrant and have:

         (a) Designed such disclosure controls and procedures, or caused such
         disclosure controls and procedures to be designed under our
         supervision, to ensure that material information relating to the
         registrant, including its consolidated subsidiaries, is made known to
         us by others within those entities, particularly during the period in
         which this report is being prepared;

         (b) Designed such internal control over financial reporting, or caused
         such internal control over financial reporting to be designed under our
         supervision, to provide reasonable assurance regarding the reliability
         of financial reporting and the preparation of financial statements for
         external purposes in accordance with generally accepted accounting
         principles;

         (c) Evaluated the effectiveness of the registrant's disclosure controls
         and procedures and presented in this report our conclusions about the
         effectiveness of the disclosure controls and procedures, as of a date
         within 90 days prior to the filing date of this report, based on such
         evaluation; and

         (d) Disclosed in this report any change in the registrant's internal
         control over financial reporting that occurred during the second fiscal
         quarter of the period covered by this report that has materially
         affected, or is reasonably likely to materially affect, the
         registrant's internal control over financial reporting; and

5.    The registrant's other certifying officer(s) and I have disclosed to the
      registrant's auditors and the audit committee of the registrant's board of
      directors (or persons performing the equivalent functions):

         (a) All significant deficiencies and material weaknesses in the design
             or operation of internal control over financial reporting which are
             reasonably likely to adversely affect the registrant's ability to
             record, process, summarize, and report financial information; and

         (b) Any fraud, whether or not material, that involves management or
             other employees who have a significant role in the registrant's
             internal control over financial reporting.

Date:   August 31 , 2005              /s/ Nathan I. Partain
    -----------------------------     ------------------------------------------
                                            Nathan I. Partain
                                             Principal Executive Officer
                                             Duff & Phelps Utility and Corporate
                                             Bond Trust Inc.