NEWS RELEASE
          AMERICAN ECO CORPORATION 154 University Avenue, Suite 200,
          Toronto, Ontario, Canada M5H 3Y9 [NASDAQ SYMBOL: ECGOF/TSE
          SYMBOL: ECX/CBOE SYMBOL: EOQ/BERLIN SYMBOL: AEOGR]

          FOR IMMEDIATE RELEASE THURSDAY, FEBRUARY 26, 1998
          -------------------------------------------------

                        AMERICAN ECO OUTLINES LETTER OF INTENT
                           FOR DOMINION BRIDGE ACQUISITION

          TORONTO, CANADA - MICHAEL E. MCGINNIS, CHAIRMAN, PRESIDENT & CEO
          OF AMERICAN ECO CORPORATION announced today that as the first
          step in a proposal to acquire Dominion Bridge Corporation of
          Montreal, Quebec, following completion of the purchase of a
          private placement of USD$5.0 million in shares and warrants of
          Dominion Bridge, he has accepted appointments to the Board of
          Directors and to the Executive Committee of Dominion Bridge.

          Unanimous approval of an American Eco Letter of Intent to acquire
          Dominion Bridge, was given upon the recommendation of Legg Mason
          Wood Walker, Incorporated.  The final transaction will be subject
          to ratification of the Boards of both companies, execution of a
          definitive acquisition agreement, approval of the shareholders of
          both companies, as well as approval of requisite regulatory
          authorities and customary closing conditions.

          In the proposed acquisition transaction, the shareholders of
          Dominion Bridge would receive, three year, 7-1/2% convertible
          subordinated notes ("Notes") of American Eco in the principal
          amount of USD$3.00 per each common share of Dominion Bridge.  At
          the end of each six-month period, holders may convert one-third
          of the Notes into shares of American Eco common shares at a price
          of USD$15.00 per share.  In the event that American Eco's common
          shares trade at more than USD$16.00 per share for a period of
          twenty consecutive trading days, the Notes will be redeemable at
          USD$3.00 per share by American Eco.  The Notes will bc registered
          and tradable on a nationally recognized securities exchange.

          The transaction is valued at approximately USD$135.0 million
          including the third party bank debt of Dominion Bridge
          Corporation of USD$37.5 million.  The valuation of Dominion
          Bridge Corporation is based on the significant synergies between
          the operating units of both companies in North America.  American
          Eco feels that the combined capabilities of the firms will enable
          them to provide a broad array of services to their industrial
          based clients including the offshore oil and gas businesses.  The
          significant engineering and construction expertise of Dominion
          Bridge Corporation's 63% owned subsidiary, McConnell Dowell,
          complements American Eco's business strategy.

          The Letter of Intent includes a USD$25.0 million working capital
          loan to be made available to Dominion Bridge by March 23, at
          which time, American Eco will also provide management services to
          Dominion Bridge.  Concurrently, Dominion Bridge will issue a two-
          year warrant to American Eco entitling American Eco to purchase
          up to 10% of the outstanding common shares of Dominion Bridge at
          USD$3.00 per share.

          The Letter of Intent also provides for the payment of a USD$3.5
          million break-up fee to American Eco in the event of a third
          party acquisition of Dominion Bridge.  The Letter of Intent
          terminates if definitive agreements providing for the
          contemplated transactions are not executed by April 6, 1998.


          NEWS RELEASE - AMERICAN ECO CORPORATION - Page 2 of 2 - February
          26, 1998

          Michael McGinnis, Chairman, President & CEO of American Eco,
          stated, "As a Canadian Company, American Eco plans to support the
          employees and customers of Dominion Bridge through this
          transition period and then to expand it as world class company,
          by collaborating and sharing fabrication work with our American
          Eco facilities in Halifax, Edmonton and Vancouver.  In addition,
          the ability to expand services not only throughout North America
          but on a world wide basis, including the very strong Pacific Rim
          presence of McConnell Dowell provides a major profit opportunity
          for all divisions".

          After execution of a definitive acquisition agreement, American
          Eco and Dominion Bridge will file a registration statement with
          the Securities and Exchange Commission containing a joint proxy
          statement and prospectus that will be mailed to the companies'
          stockholders.  This announcement does not constitute an offering
          of American Eco notes, which will be made only be means of a
          prospectus filed with the Securities and Exchange Commission.

          This news release contains forward-looking statements as defined
          by the Private Securities Litigation Reform Act of 1995. 
          Forward-looking statements include statements concerning plans,
          objectives, goals, strategies, future events or performance and
          underlying assumptions and other statements that are other than
          statements of historical facts.  These statements that are
          subject to uncertainties and risks including, but not limited to,
          ability to raise capital, economic conditions, continuation of
          existing contracts and increase in backlog, impact of
          competition, pricing, capacity and supply constraints or
          difficulties, government regulation and other risks, including
          similar risks involving Dominion Bridge.  All such forward-
          looking statements whether written or oral, and whether made by
          or on behalf of the company are expressly qualified by these
          cautionary statements and any other cautionary statements which
          may accompany the forward-looking statements.  In addition, the
          Company disclaims any obligation to update any forward-looking
          statements to reflect events or circumstances after the date,
          hereof.

          DOMINION BRIDGE was established in 1879.  The Company is active
          in the international engineering and infrastructure markets.  It
          manages projects and operates facilities in North and South
          America, Europe and the Asia Pacific.  Dominion Bridge
          Corporation's subsidiaries are Dominion Bridge, Inc., Steen
          Becker, Inc. and Davie Industries.  Its Australian subsidiary,
          McConnell Dowell Corporation, is a major Asia Pacific engineering
          firm.

          AMERICAN ECO is a leading North American provider of single-
          source construction management, maintenance, specialty
          fabrication, engineering and environmental remediation services
          in the refining, petrochemical, utility, forest products and
          offshore manufacturing industries.

                                         -30-

          For additional information call:
          J.C.Pennie                         Bruce Tobecksen
          Vice-Chairman                      Treasurer
          Toronto, Canada                    Houston, Texas
          (416) 340-2727                     (281) 774-7000
          WWW.AMERICANECO.COM


                                          2