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US-41 detoured Aug. 10 for culvert project in Keweenaw County
July 30, 2026
ISHPEMING, Mich. - The Michigan Department of Transportation (MDOT) is investing about $330,000 to replace culverts on US-41 south of Washington Mine Road in Keweenaw County. Work includes replacing the culverts with concrete elliptical culverts, backfill, guardrail, slope restoration and repaving. The project will require detouring US-41 Aug. 10-14.
County:
Keweenaw
Highway:
US-41
Closest communities:
Mandan
Copper Harbor
Tentative start date:
Monday, Aug. 10, 2026
Estimated end date:
Friday, Aug. 21, 2026
Traffic restrictions:
US-41 will be closed to through-traffic from the M-26/US-41 intersection in Phoenix to Copper Harbor, with a posted detour onto M-26. US-41 will remain open to local traffic on both sides of the project area. The detour is expected to last until Aug. 14.
Jobs numbers:
Based on economic modeling, this investment is expected to directly and indirectly support three jobs.
Safety benefit:
This work will replace culverts that have reached the end of their service life, extending the lifespan of the roadway and increasing safety for motorists.
Media Contact: