Exhibit 3.1

                                COMPOSITE BY-LAWS
                                       of
                             BAYOU STEEL CORPORATION
                             a Delaware Corporation
                      (as amended through November 2, 1999)

                                    ARTICLE I

                            MEETINGS OF STOCKHOLDERS

     1.1 Annual  Meeting.  The annual meeting of  stockholders  shall be held no
later than five months after the end of the  Corporation's  fiscal  year,  or as
soon thereafter as practicable, and shall be held at a place and time determined
by the board of directors (the "Board").

     1.2 Special Meetings. Special meetings of the stockholders may be called by
resolution  of the Board or by the chairman of the board or the chief  executive
officer and shall be called by the chief executive officer or secretary upon the
written  request  (stating the purpose or purposes of the meeting) of any two of
the  directors  then in office or the  holders  of 10% of the  aggregate  voting
power.  As used in these by-laws,  the term  "aggregate  voting power" means the
total  number of votes  cast by  stockholders  for all  matters  other  than the
election of  directors of the  Corporation  and other than matters as to which a
class vote is applicable. Only business related to the purposes set forth in the
notice of the meeting may be transacted at a special meeting.

     1.3 Place and Time of Meetings. Meetings of the stockholders may be held in
or  outside  Delaware  at the  place  and  time  specified  by the  Board or the
directors or shareholders requesting the meeting.

     1.4 Notice of Meetings; Waiver of Notice. Written notice of each meeting of
stockholders shall be given to each stockholder entitled to vote at the meeting,
except that (a) it shall not be necessary to give notice to any  stockholder who
submits a signed waiver of notice before or after the meeting, and (b) no notice
of an adjourned  meeting need be given except when required under Section 1.5 of
these by-laws or by law. Each notice of a meeting shall be given,  personally or
by mail,  not less than ten nor more than sixty days before the  meeting,  or if
such meeting  shall be scheduled to occur after the  redemption of the Preferred
Stock,  not less than  thirty nor more than sixty days before the  meeting,  and
shall  state  the time and place of the  meeting,  and  unless it is the  annual
meeting, shall state at whose direction or request the meeting is called and the
purposes for which it is called.  If mailed,  notice shall be  considered  given
when mailed to a stockholder at his address on the  corporation's  records.  The
attendance of any stockholder at a meeting,  without protesting at the beginning
of the  meeting  that the  meeting is not  lawfully  called or  convened,  shall
constitute a waiver of notice by him.


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     1.5 Quorum.  At any meeting of  stockholders,  the presence in person or by
proxy of the  holders  of shares of stock  having a  majority  of the  aggregate
voting power shall  constitute a quorum for the transaction of any business.  In
the absence of a quorum,  a majority in voting  interest of those present or, if
no  stockholders  are present,  any officer  entitled to preside at or to act as
secretary of the meeting,  may adjourn the meeting until a quorum is present. At
any adjourned meeting at which a quorum is present any action may be taken which
might  have been  taken at the  meeting as  originally  called.  No notice of an
adjourned  meeting  need be given if the time and  place  are  announced  at the
meeting at which the  adjournment  is taken except that, if  adjournment  is for
more than thirty days or if, after the  adjournment,  a new record date is fixed
for the meeting,  notice of the  adjourned  meeting  shall be given  pursuant to
Section 1.4.

     1.6 Voting;  Proxies.  Each holder of outstanding  shares of Class A Common
Stock, Class B Common Stock, Class C Common Stock and Cumulative Preferred Stock
and any other authorized and outstanding class of stock shall be entitled to the
number of votes per share,  if any, and shall vote in the manner provided in the
Certificate of  Incorporation.  Corporate action to be taken by stockholder vote
shall  be  authorized  by  a  majority  of  the  votes  cast  at  a  meeting  of
stockholders,  except  as  otherwise  provided  by law,  by the  Certificate  of
Incorporation or by Section 1.8 of these by-laws.  Directors shall be elected in
the manner  provided  in Section  2.1 of these  by-laws.  Voting  need not be by
ballot  unless  requested  by a  stockholder  at the  meeting  or ordered by the
chairman of the  meeting.  Each  stockholder  entitled to vote at any meeting of
stockholders  or to  express  consent  to or dissent  from  corporate  action in
writing without a meeting may authorize  another person to act for him by proxy.
Every proxy must be signed by the stockholder or his attorney-in- fact. No proxy
shall be valid after three years from its date unless it provides otherwise.

     1.7 List of  Stockholders.  Not less than ten days prior to the date of any
meeting of  stockholders,  the  secretary  of the  Corporation  shall  prepare a
complete  list of  stockholders  entitled  to vote at the  meeting,  arranged in
alphabetical order and showing the address of each stockholder and the number of
shares  registered in his name.  For a period of not less than ten days prior to
the meeting,  the list shall be available  during  ordinary  business  hours for
inspection by any  stockholder  for any purpose  germane to the meeting.  During
this period, the list shall be kept at a place within the city where the meeting
is to be held. The list shall also be available for  inspection by  stockholders
at the time and place of the meeting.

     1.8 Action by Consent  Without a Meeting.  Any action required or permitted
to be taken at any  meeting  of  stockholders  may be taken  without a  meeting,
without prior notice and without a vote, if a consent in writing,  setting forth
the action so taken,  shall be signed by the holders of outstanding stock having
not less than the minimum  number of votes that would be  necessary to authorize
or take such action at a meeting at which all shares  entitled  to vote  thereon
were present and voting. Prompt notice of the taking of any such action shall be
given to those stockholders who did not consent in writing.


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                                   ARTICLE II

                               BOARD OF DIRECTORS

     2.1 Number, Qualification,  Election and Term of Directors. The business of
the Corporation  shall be managed by the Board,  which shall consist of not less
than the number of directors  provided for in the Certificate of  Incorporation,
as determined by  resolution  of the Board.  Directors  shall be elected at each
annual  meeting of  stockholders  in the manner  provided in the  Certificate of
Incorporation   and  shall  hold  office  until  the  next  annual   meeting  of
stockholders  and until  the  election  and  qualification  of their  respective
successors, subject to the provisions of Section 2.9.

     2.2 Quorum and Manner of Acting. A majority of the directors then in office
shall constitute a quorum for the transaction of business at any meeting. Action
of the Board  shall be  authorized  by the vote of a majority  of the  directors
present at the time of the vote if there is a quorum,  unless otherwise provided
by law, the Certificate of Incorporation  or these by-laws.  In the absence of a
quorum, a majority of the directors present may adjourn any meeting from time to
time until a quorum is present.

     2.3 Place of  Meetings.  Meetings  of the  Board may be held in or  outside
Delaware.

     2.4 Annual and Regular  Meetings.  Annual  meetings  of the Board,  for the
election of officers and  consideration  of other matters,  shall be held either
(a) without notice  immediately  after the annual meeting of stockholders and at
the same  place,  or (b) as soon as  practicable  after the  annual  meeting  of
stockholders,  on notice as provided in Section  2.6 of these  by-laws.  Regular
meetings of the Board shall be held not less than four times per annum.  Regular
meetings of the Board may be held without notice at such times and places as the
Board determines. If the day fixed for a regular meeting is a legal holiday, the
meeting shall be held on the next business day.

     2.5 Special  Meetings.  Special  meetings of the Board may be called by the
chairman  of the  board,  the  chief  executive  officer  or by  any  two of the
directors.

     2.6 Notice of Meetings;  Waiver of Notice.  Notice of the time and place of
each  special  meeting  of the  Board,  and of  each  annual  meeting  not  held
immediately  after the annual  meeting of  stockholders  and at the same  place,
shall be given to each  director by mailing it to him at his  residence or usual
place of  business at least three days  before the  meeting,  or by  delivering,
telephoning  or  telegraphing  it to him at least two days  before the  meeting.
Notice of a special  meeting  shall  also  state  the  purpose(s)  for which the
meeting is called. Notice need not be given to any director who submits a signed
waiver of notice before or after the meeting or who attends the meeting  without
protesting  at the  beginning  of the meeting the  transaction  of any  business
because the meeting was not lawfully called or convened. Notice of any adjourned
meeting need not be given,  other than by  announcement  at the meeting at which
the adjournment is taken.


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     2.7 Board or Committee  Action  Without a Meeting.  Any action  required or
permitted to be taken by the Board or by any committee of the Board may be taken
without a meeting if all of the members of the Board or of the committee consent
in  writing  to  the  adoption  of a  resolution  authorizing  the  action.  The
resolution and the written consents by the members of the Board or the committee
shall be  filed  with  the  minutes  of the  proceeding  of the  Board or of the
committee.

     2.8 Participation in Board or Committee  Meetings by Conference  Telephone.
Any or all members of the Board or of any committee of the Board may participate
in a meeting of the Board or of the committee by means of a conference telephone
or similar  communications  equipment allowing all persons  participating in the
meeting to hear each other at the same time.  Participation  by such means shall
constitute presence in person at the meeting.

     2.9  Resignation  and Removal of Directors.  Any director may resign at any
time by delivering his resignation in writing to the chief executive  officer or
secretary  of the  Corporation,  to take  effect  at the time  specified  in the
resignation;  the  acceptance of a  resignation,  unless  required by its terms,
shall not be necessary to make it effective.  Any or all of the directors may be
removed at any time,  either with or without  cause,  in the manner  provided by
applicable law or by the Certificate of Incorporation.

     2.10  Vacancies.  Any  vacancy in the Board,  including  one  created by an
increase in the number of directors, may be filled for the unexpired term either
in the manner provided in the Certificate of  Incorporation  or by the unanimous
vote  of  the  remaining   directors  elected  by  the  respective   classes  of
stockholders.

     2.11  Compensation.  Subject to Section 3.2,  directors  shall receive such
compensation  as the Board  determines,  together  with  reimbursement  of their
reasonable  expenses in  connection  with the  performance  of their  duties.  A
director  may  also be paid for  serving  the  Corporation,  its  affiliates  or
subsidiaries in other capacities.

                                   ARTICLE III

                                   COMMITTEES

     3.1 Executive Committee.  The Board, by resolution adopted by a majority of
the entire Board, may designate an Executive  Committee of one or more directors
which shall have all the powers and authority of the Board,  except as otherwise
provided in the  resolution or by  applicable  law. The members of the Executive
Committee shall serve at the pleasure of the Board.  All action of the Executive
Committee shall be reported to the Board at its next meeting.

     3.2  Compensation  Committee.  The Board  shall  designate  a  Compensation
Committee of one or more directors who shall not be officers or employees of the
Corporation.  The Compensation Committee shall establish compensation payable to
directors  and  executive  officers of the  Corporation  as well as any loans or
advances by the Corporation to such persons.

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     3.3 Nominating  Committees.  The Board shall designate a Class A Nominating
Committee of all of the current  directors  who have been elected by the holders
of  Class A Common  Stock  (or  otherwise  designated  as  Class A Common  Stock
directors) and not officers or employees of the Corporation, and service on such
committee shall be voluntary and discretionary for each director.  The Board may
designate a Class B Nominating Committee of one or more directors,  who shall be
directors  elected  by the  holders  of the  Class B Common  Stock or  otherwise
designated as Class B Common Stock directors. The Class A and Class B Nominating
Committees  shall  nominate  persons for election as directors by the holders of
Class A Common  Stock  and Class B Common  Stock,  respectively,  at the  annual
meeting of stockholders.

     3.4 Other Committees. The Board, by resolution adopted by a majority of the
entire  Board,  may  designate  other  committees  of  directors  of one or more
directors, including but not limited to an Audit Committee, which shall serve at
the Board's pleasure and have such powers and duties as the Board determines.

     3.5 Rules  Applicable  to  Committees.  The Board may designate one or more
directors as alternate  members of any committee,  who may replace any absent or
disqualified  member  at  any  meeting  of the  committee.  In  the  absence  or
disqualification  of any  member of a  committee,  the  member(s)  present  at a
meeting of the  committee  and not  disqualified,  whether or not a quorum,  may
unanimously  appoint  another  director  to act at the  meeting  in place of the
absent or  disqualified  member.  All action of a committee shall be reported to
the Board at its next meeting. Each committee shall adopt rules of procedure and
shall meet as provided by those rules or by resolutions of the Board.

                                   ARTICLE IV

                                    OFFICERS

     4.1 Number; Security. The officers of the Corporation shall be the chairman
of the  board,  one or more vice  chairmen,  the chief  executive  officer,  the
president,  the chief operating officer,  the chief financial officer and one or
more vice  presidents  (including an executive vice  president,  if the Board so
determines).  Any two or more offices may be held by the same person.  The Board
may require any  officer,  agent or employee to give  security  for the faithful
performance of his duties.

     4.2  Election;  Term of Office.  The officers of the  Corporation  shall be
elected  annually by the Board and each such officer shall hold office until the
next  annual  meeting  of the Board and until  the  election  of his  successor,
subject to the provisions of Section 4.4.

     4.3 Subordinate  Officers and Employees.  The Board may appoint subordinate
officers,  agents  or  employees,  (including  one or more  vice  presidents,  a
secretary, one or more assistant secretaries,  a controller, a treasurer and one
or more  assistant  treasurers),  each of whom shall hold office for such period
and have such powers and duties as the Board determines. The Board may


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delegate to any officer or to any  committee the power to appoint and define the
powers and duties of any subordinate officers, agents or employees.

     4.4 Resignation and Removal of Officers. Any officer may resign at any time
by delivering  his  resignation  in writing to the president or secretary of the
Corporation,  to take  effect  at the time  specified  in the  resignation;  the
acceptance  of a  resignation,  unless  required  by  its  terms,  shall  not be
necessary  to make it  effective.  Except  as  provided  in the  Certificate  of
Incorporation,  any officer appointed by the Board or appointed by an officer or
by a committee may be removed by the Board either with or without cause,  and in
the case of an officer appointed by an officer or by a committee, by the officer
or committee who appointed him.

     4.5 Vacancies. A vacancy in any office may be filled for the unexpired term
in the manner  prescribed  in Sections 4.2 and 4.3 of these by-laws for election
or appointment to the office.

     4.6 Chairman of the Board.  The chairman of the board shall  preside at all
meetings  of the Board and of the  stockholders  and shall have such  powers and
duties as the Board assigns to him.

     4.7 Chief Executive Officer. The chief executive officer of the Corporation
shall have general  supervision  over the business of the  Corporation and shall
have such other powers and duties as the Board assigns to him.

     4.8 President.  Subject to the control of the chief executive officer,  the
president  of the  Corporation  shall  have such  powers as the chief  executive
officer assigns to him.

     4.9 Chief Operating Officer.  The chief operating  officer,  subject to the
powers of the chief executive  officer and the  supervision of the Board,  shall
manage the day-to-day  operations of the  Corporation,  shall perform such other
duties as may be prescribed  by the Board or the chief  executive  officer,  and
shall have the general powers and duties  usually vested in the chief  operating
officer of a corporation.  Without limiting the generality of the foregoing, the
chief  operating  officer shall have  supervision  and direction  over any other
subordinate officer of the Corporation and its subsidiaries, and all such powers
as may be reasonably incident to such responsibilities. He may sign, execute and
deliver in the name of the Corporation powers of attorney, contracts, bonds, and
other  obligations and shall perform such other duties as may be prescribed from
time to time by the Board or by the chief executive officer.

     4.10 Chief  Financial  Officer.  The chief  financial  officer shall be the
principal  financial  officer of the Corporation.  He shall manage the financial
affairs  of  the  Corporation  and  direct  the  activities  of  the  treasurer,
controller and other  officers or employees  responsible  for the  Corporation's
finances.  He shall be  responsible  for all  internal  and  external  financial
reporting and for coordinating the audit of the Corporation's  financial records
with the external auditors.  He may sign, execute and deliver in the name of the
Corporation  powers of attorney,  contracts,  bonds,  and other  obligations and
shall  perform such other duties as may be  prescribed  from time to time by the
Board or by these by-laws.

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     4.11 Vice President.  Each vice president shall have such powers and duties
as the Board or the chief executive officer assigns to him.

     4.12  Secretary.  The  secretary  shall be the  secretary  of, and keep the
minutes  of,  all  meetings  of the  Board  and of the  stockholders,  shall  be
responsible for giving notice of all meetings of stockholders  and of the Board,
and shall  keep the seal and,  when  authorized  by the  Board,  apply it to any
instrument requiring it. Subject to the control of the Board, he shall have such
powers and duties as the Board or the chief executive officer assigns to him. In
the absence of the secretary from any meeting,  the minutes shall be kept by the
person appointed for that purpose by the presiding officer.

     4.13 Salaries.  The Board may fix the officers' salaries, if any, or it may
authorize the chief executive officer to fix the salary of any other officer.

                                    ARTICLE V

                                     SHARES

     5.1  Certificates.  Subject  to  requirements  prescribed  by law  and  the
Certificate of Incorporation,  the Corporation's  shares shall be represented by
certificates in the form approved by the Board. Each certificate shall be signed
by the  chairman of the Board,  the  president  or a vice  president  and by the
secretary  or  an  assistant  secretary,  or  the  treasurer  or  any  assistant
treasurer, and shall be sealed with the Corporation's seal or a facsimile of the
seal.  Whenever a certificate is  countersigned by a transfer agent, one or both
of the  officers'  or  assistant  officers'  signature  and the  seal  may be in
facsimile,  engraved or printed.  In case any officer or assistant officer whose
signature  appears on any share certificate shall have ceased to be such because
of death, resignation or otherwise,  before the certificate is issued, it may be
issued by the  Corporation  with the same  effect as if he had not  ceased to be
such at the date of its issue. So long as the  restrictions set forth in Article
5.9 of the  Certificate  of  Incorporation  shall  not have  lapsed,  all  share
certificates  for  shares of common  stock  shall bear a  conspicuous  legend as
follows:

          "THE SHARES OF STOCK  REPRESENTED  HEREBY ARE SUBJECT TO  RESTRICTIONS
     PURSUANT  TO  ARTICLE  5.9  OF  THE  CERTIFICATE  OF  INCORPORATION  OF THE
     CORPORATION,   A  COPY  OF  WHICH  IS  AVAILABLE  FOR   INSPECTION  AT  THE
     CORPORATIONS'S  PRINCIPAL PLACE OF BUSINESS  LOCATED AT 1111 W. MOCKINGBIRD
     LANE, DALLAS, TEXAS 75247.

If the  Corporation  is  authorized  to issue shares of more than one class,  it
shall be stated  on the face or back of all  certificates  that the  Corporation
will  furnish to any  shareholder,  upon request and without  charge,  a full or
summary statement of the designations,  preferences,  limitations,  and relative
rights  of the  shares  of  each  class  authorized  to be  issued  and,  if the
Corporation  is  authorized to issue any preferred or special class in a series,
the variations in the relative rights and preferences between the shares of each
such series so far as the same have been fixed and determined, and the authority

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of the  Board  of  Directors  to fix  and  determine  the  relative  rights  and
preferences of subsequent series.

     5.2  Share  Register.   All  certificates   representing  shares  shall  be
registered in the share register as they are issued, and those of the same class
or  series  shall be  consecutively  numbered.  Subject  to  Article  5.9 of the
Certificate of Incorporation  and Section 5.4 hereof,  the Corporation  shall be
entitled to treat the registered holder of any share(s) as the holder thereof in
fact and law and shall not be bound to  recognize  any  equitable or other claim
to, or interest in, such  share(s) on the part of any other  person,  whether or
not it shall have express or other notice thereof,  save as otherwise  expressly
provided by statute.

     5.3 Transfers.  Subject to Article 5.9 of the Certificate of  Incorporation
and Section 5.4 hereof,  shares of the Corporation  shall be transferred only on
its books upon the  surrender to the  Corporation  or its transfer  agent of the
share  certificate(s)  therefor  duly endorsed by the person named  therein,  or
accompanied  by proper  evidence  of  succession,  assignment  or  authority  to
transfer such shares;  provided,  no transfers of shares shall be made while the
books of the Corporation are closed against transfers as hereinafter provided in
these  by-laws.  Subject to Section 5.4 hereof,  upon  transfer the  surrendered
certificate(s)  shall be cancelled,  a new certificate or certificates  shall be
issued to the person entitled  thereto,  and the  transaction  shall be recorded
upon the books of the Corporation.

     5.4  Restrictions on Transfer.  In addition to the  restrictions in Article
5.9 of the Certificate of  Incorporation,  transfers of shares may be restricted
in any lawful manner by law, by the Certificate of Incorporation, or by contract
if a copy of the contract is filed with the Corporation, provided that notice of
the  restrictions  shall  be  typed  or  printed   conspicuously  on  the  share
certificate.  The secretary shall enforce the restrictions of Article 5.9 of the
Certificate  of  Incorporation.  In so  doing,  the  secretary  shall  determine
ownership of stock of the  Corporation in accordance  with all rules relating to
direct,  indirect or  constructive  ownership of stock under  Section 382 of the
Internal Revenue Code of 1986 (including,  without  limitation,  the rules under
Section 382(1)(3) entitled "Operating Rules Relating to Ownership of Stock"), as
the same may be amended from time to time,  and the secretary may seek, and rely
upon,  the advice of  counsel  in order to  attribute  stock  ownership.  If the
secretary  determines  that an  attempted  transfer  violates  or would  violate
Article 5.9 of the  Certificate  of  Incorporation,  any such  transfer,  unless
otherwise  authorized by the Board of Directors in accordance  with such Article
5.9, shall be null and void ab initio.  Except as authorized by the secretary in
accordance  with the  procedures  set forth  above,  no employee or agent of the
Corporation shall be permitted to record any attempted or purported transfer and
no  intended  transferee  of shares of common  stock of the  Corporation  in any
attempted or purported  transfer  shall be recognized  as a  shareholder  of the
Corporation for any purpose whatever except as provided in Article 5.9.

     5.5 Lost, Destroyed or Mutilated  Certificates.  The Board of Directors may
direct a new share  certificate  to be issued in place of any share  certificate
theretofore  issued by the Corporation and claimed to have been lost,  destroyed
or mutilated, upon the claimant's furnishing an affidavit

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of the facts and, if required by the Board of Directors,  a bond of indemnity in
such amount or in open penalty and in such form,  with such surety  thereon,  as
the Board may approve for the protection of the Corporation and its officers and
agents.

     5.6 Determination of Stockholders of Record. The Board may fix, in advance,
a date as the record  date for the  determination  of  stockholders  entitled to
notice of or to vote at any meeting of the  stockholders,  or to express consent
to or dissent from any proposal without a meeting,  or to receive payment of any
dividend or the allotment of any rights, or for the purpose of any other action.
The record date may not be more than sixty or less than ten days before the date
of the meeting or more than sixty days before any other action.

                                   ARTICLE VI

                                  MISCELLANEOUS

     6.1 Seal.  The Board shall adopt a  corporate  seal,  which shall be in the
form of a circle and shall bear the Corporation's name and the year and state in
which it was incorporated.

     6.2 Fiscal Year.  The Board may  determine the  Corporation's  fiscal year.
Until  changed by the Board,  the  Corporation's  fiscal year shall be October 1
through September 30.

     6.3 Voting of Shares in Other  Corporations.  Shares in other  corporations
which are held by the  Corporation  may be represented and voted by the chairman
of the board, the president or a vice president of this Corporation, by proxy or
proxies appointed by one of them, or by any person appointed by the Board.

     6.4 Amendments.  By-laws may be amended,  repealed or adopted by the Board.
Additionally,  any  amendment or repeal of Sections 3.3, 4.7 or this Section 6.4
shall be by unanimous vote of the Board.



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