Skip to main content
US-31 Rebuilding Project - Grand Traverse and Benzie counties

US-31 Rebuilding Project - Grand Traverse and Benzie counties

About this project

MDOT plans 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, in 2025 and 2026. The proposed work will include roadway rebuilding and widening 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 will be rebuilt as a roundabout.

Project details

Schedule

Spring 2025 - Fall 2026

Location

  • Green Lake Township, Grand Traverse County
  • Inland Township, Benzie County

Cost

$32.5 million

Benefits

  • Improved safety
  • Improved pedestrian crossings
  • Improved bicycle crossings
  • Extended road service life

Lane closures and detours

  • April - June 2026: Rebuilding the north side of US-31 between Sullivan Road and west of J. Maddy Parkway/S. Long Lake Road, including building the roundabout. Southbound US-31 traffic will be maintained on US-31, while northbound US-31 traffic will be detoured on Gonder Road, Riley Road, J. Maddy Parkway, Youker Road, and County Road 633.
    • J. Maddy Parkway access to US-31 will be open for most of this phase of construction, though it will be closed for up to two weeks at the start of work while crews build temporary lanes around the roundabout. South Long Lake Road access to US-31 will be closed, with traffic detouring on West Silver Lake Road and Secor Road.
  • June - July 2026: Rebuilding the south side of US-31 between Sullivan Road and west of J. Maddy Parkway/S. Long Lake Road, including building the roundabout. Southbound US-31 traffic will be maintained on US-31, while northbound US-31 traffic will be detoured on Gonder Road, Riley Road, J. Maddy Parkway, Youker Road, and County Road 633.
    • J. Maddy Parkway access to US-31 will be closed for most of this phase of construction. South Long Lake Road access to US-31 will be open to southbound US-31 traffic only, with other traffic detouring on West Silver Lake Road and Secor Road.
  • July - November 2026: 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 on Reynolds Road, Cinder Road, Diamond Park Road, Gonder Road, Riley Road, and J. Maddy Parkway.

Resources

Check Mi Drive for current lane closures

Know before you go!

Project and detour maps

Stay connected

Media questions? Contact James Lake, Media Representative, at 906-250-0993.

  • Subscribe for email updates

    Get project updates delivered straight to your inbox.

  • Project questions?

    Jim Johnson, Project Manager
    231-941-1986

Follow us on X