Exhibit 99.1

                  BAKER TO REACTIVATE SHARE REPURCHASE PROGRAM

PITTSBURGH, June 6 /PRNewswire-FirstCall/ -- Michael Baker Corporation (Amex:
BKR) announced today that it will reactivate immediately its share repurchase
program. Presently, the company has approximately 585,300 shares available for
repurchase. This includes approximately 85,300 shares under an initial 500,000
share authorization by the company's Board of Directors in October 1996, and the
total of an additional 500,000 share authorization by the Board in February
2003.

The shares will be purchased in the open market at prevailing prices. The timing
and extent of the purchases will depend on market conditions. The company
intends to use existing cash balances to finance the repurchases.

Michael Baker Corporation ( http://www.mbakercorp.com ) provides engineering and
operations and maintenance services for its clients' most complex challenges
worldwide. The firm's primary practice areas are aviation, environmental,
facilities, geospatial information technologies, linear utilities,
transportation, water/wastewater, and oil & gas. With more than 4,200 employees
in over 40 offices across the United States and internationally, Baker is
focused on providing services that span the complete life cycle of
infrastructure and managed asset projects.

SOURCE  Michael Baker Corporation
    -0-                             06/06/2005
    /CONTACT:  David Higie of Michael Baker Corporation, +1-412-269-6449/
    /Photo:  http://www.newscom.com/cgi-bin/prnh/20020605/BAKERLOGO
             AP Archive:  http://photoarchive.ap.org
             PRN Photo Desk, photodesk@prnewswire.com /
    /Web site:  http://www.mbakercorp.com /