EXHIBIT 32.2


                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2003

Pursuant to 18 U.S.C. ss. 1350 (as adopted pursuant to ss.906 of the
Sarbanes-Oxley Act of 2003), I, the undersigned Chief Financial Officer of
Transport Corporation of America, Inc. (the "Company"), hereby certify that the
Annual Report on Form 10-K of the Company for the year ended December 31, 2003
(the "Report") fully complies with the requirements of section 13(a) or 15(d) of
the Securities Exchange Act of 1934 and that information contained in the Report
fairly presents, in all material respects, the financial condition and results
of operations of the Company.

A signed original of this written statement required by Section 906 has been
provided to the Company and will be retained by the Company and furnished to the
SEC or its staff upon request.

Date:  March 18, 2004                /s/ Keith R. Klein
                           -----------------------------------------------------
                           Keith R. Klein
                           Chief Financial Officer and Chief Information Officer