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US-31 rebuilding near Interlochen to enter final segment July 20

TRAVERSE CITY, Mich. - The Michigan Department of Transportation’s (MDOT) project to rebuild a 7.8-mile section of US-31 from Sullivan Road in Green Lake Township, Grand Traverse County, to Reynolds Road in Inland Township, Benzie County, requiring detours on local roads, is expected to enter its final segment July 20.

This $32.5 investment includes rebuilding and widening the road to improve pavement condition and provide safety improvements with the addition of center left-turn lanes, widened paved shoulders and rumble strips. The South Long Lake Road/J. Maddy Parkway intersection was rebuilt as a roundabout.

Counties:
Grand Traverse and Benzie

Highway:
US-31

Closest community:
Interlochen

Start date:
Monday, July 20, 2026

Estimated end date:
Sunday, Nov. 15, 2026

Traffic restrictions:
In this final segment of this project, from now into November, crews will be rebuilding US-31 from west of the South Long Lake Road/J. Maddy Parkway roundabout to Reynolds Road. Southbound US-31 traffic will be maintained on US-31, while northbound US-31 traffic will be detoured via southbound Reynolds Road, eastbound Cinder Road, eastbound Diamond Park Road, northbound Gonder Road, eastbound Riley Road and northbound J. Maddy Parkway. The roundabout at South Long Lake Road/J. Maddy Parkway is open to traffic.

Visit MDOT's project website for detour route maps.

Jobs numbers:
Based on economic modeling, this investment is expected to directly and indirectly support 275 jobs.

Safety benefit:
This project will improve safety for all users of the highway with the introduction of a new roundabout, a center-left turn lane and widened paved shoulders.

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