Valmont Industries (VMI) 10-Q 2002 Q2 Quarterly report

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Exhibit 99.1

CERTIFICATION OF
CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

        Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350) the undersigned, Mogens C. Bay, Chief Executive Officer, and Terry J. McClain, Chief Financial Officer of Valmont Industries, Inc. (the "Company"), have executed this certification in connection with the filing with the Securities and Exchange Commission of the Company's Quarterly Report on Form 10-Q for the quarter ended June 29, 2002 (the "Report").

The undersigned hereby certifies that:

        1.    The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

        2.    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

        IN WITNESS WHEREOF, the undersigned has executed this certification as of the 5th day of August, 2002.

/s/  MOGENS C. BAY      Mogens C. Bay
Chief Executive Officer

/s/  TERRY J.MCCLAIN      Terry J. McClain
Chief Financial Officer

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Exhibit 99.1