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 Annual Report on Form 10-K for the year ended December 31, 2006 (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/ Richard L. Shaw   Chairman of the Board and Chief Executive Officer Date: March 16, 2007

     Pursuant to 18 U.S.C. Section 1350, the undersigned officer of Michael Baker Corporation (the “Company”), hereby certifies that the Company’s Annual Report on Form 10-K for the year ended December 31, 2006 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	Date: March 16, 2007
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.