Exhibit 32.1

                            ADDITIONAL CERTIFICATIONS

Pursuant to 18 U.S.C. Section 1350, the undersigned officer of Michael Baker
Corporation (the "Company"), hereby certifies that the Company's Quarterly
report on Form 10-Q for the quarter ended March 31, 2005 (the "Report") fully
complies with the requirements of Section 13(a) or 15(d), as applicable, of the
Securities Exchange Act of 1934 and that the information contained in the Report
fairly presents, in all material respects, the financial condition and results
of operations of the Company.

/s/  Donald P. Fusilli, Jr.                         Dated: May 10, 2005
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Donald P. Fusilli, Jr.
President and Chief Executive Officer

Pursuant to 18 U.S.C. Section 1350, the undersigned officer of Michael Baker
Corporation (the "Company"), hereby certifies that the Company's Quarterly
report on Form 10-Q for the quarter ended March 31, 2005 (the "Report") fully
complies with the requirements of Section 13(a) or 15(d), as applicable, of the
Securities Exchange Act of 1934 and that the information contained in the Report
fairly presents, in all material respects, the financial condition and results
of operations of the Company.

/s/  William P. Mooney                              Dated: May 10, 2005
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William P. Mooney
Executive Vice President and
  Chief Financial Officer

These additional certifications are being furnished solely pursuant to 18 U.S.C.
Section 1350, and are not being filed as part of the Report or as a separate
disclosure document.