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Project: IMX-35-5(177)02 |
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Polk County |
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Des Moines RCE Office |
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P.O. Box 4043 |
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Highland Park Station |
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Des Moines, Iowa 50333 |
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Dear RCE: |
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This letter is to document that all temporary traffic control signs and devices used on the referenced project are NCHRP 350 compliant per Iowa DOT specification article 2528.01, A. |
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Traffix Devices self-certification letter for their Category I drums is attached. FHWA approval memorandums for the Category II signs and devices include the following: |
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WZ-46, WZ-99, WZ-111, and WZ-117. |
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Upon request, I will supply copies of the above documents. |
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Yours truly, |
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John Q. Owner |
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President |