Office of Materials &
Road Research
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Average Starting Date Contour
Office of Materials & Road Research
•
E-mail:
MaterialsLab.DOT@state.mn.us
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1400 Gervais Avenue
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Maplewood, MN 55109-2044
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Phone: (651) 366-5592
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FAX: (651) 366-5461
© 2026 Minnesota Department of Transportation
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395 John Ireland Boulevard
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St. Paul, MN 55155-1899
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Phone: 800/657-3774
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800/627-3529(TTY, Voice, ASCII)
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Last Updated: Tuesday, April 7, 2026 - 10:36:46 a.m. Central Daylight Time
