I-75 Business Loop, M-72 bridge projects in Grayling start March 14

What Is Being Done?

The Michigan Department of Transportation (MDOT) will be making repairs and upgrades to the M-72/I-75 Business Loop (BL) bridge over the AuSable River in Grayling.

The work will include removal and replacement of the steel sidewalk structure, structural steel repairs, abutment repairs, complete cleaning and coating of the structural steel and abutments, and bridge approach reconstruction.

MDOT will be coordinating work and detours with the following local projects:

• The City of Grayling will be reconstructing Michigan Avenue from Erie Street to Spruce Street.

• The Crawford County Road Commission will be building a pedestrian bridge over I-75 at Hartwick Pines Road, and replacing the North Down River Road bridge over the AuSable River.

When Will This Be Done?

Construction is scheduled to begin in March and be completed in mid-July.

How Will Traffic Be Affected?

The work on the I-75 BL/M-72 bridge in Grayling will require full closure and a detour for passenger vehicles on city streets: on State Street, Maple Street and Michigan Avenue for northbound traffic, and Michigan Avenue, Maple Street and Alger Street for southbound traffic.

Commercial traffic will be detoured on I-75. Eastbound M-72 traffic will be detoured north on I-75 BL to Hartwick Pines Road (Exit 259), south on I-75 to 4 Mile Road (Exit 251), then north to the Grayling exit (Exit 254) before heading east on M-72.

Westbound M-72 traffic will be detoured south on I-75 at Exit 254, north on I-75 at Exit 251, and south on the I-75 BL from Exit 259.

COUNTY: Crawford

 HIGHWAYS: I-75 Business Loop (BL), M-72

CLOSEST CITY: Grayling

ESTIMATED STARTING DATE: Monday March 14, 2016

ESTIMATED COMPLETION DATE: Friday, July 15, 2016

PROJECT: The Michigan Department of Transportation (MDOT) will be making repairs and upgrades to the M-72/I-75 BL bridge over the AuSable River in Grayling.

The work will include removing and replacing the steel sidewalk and railing structure, structural steel repairs, abutment repairs, complete cleaning and coating of the structural steel and abutments, and bridge approach reconstruction.

Because the bridge is on the National Register of Historic Places, the repairs were coordinated with and approved by the State Historic Preservation Office to maintain its historic nature.

The project also includes repairs to the M-72 bridge over the south branch of the AuSable River, about 12 miles east of Grayling.

That work will include epoxy deck sealing, cleaning and painting the structural steel, scour damage protection for bridge piers, and work on the bridge approaches.

Project maps: https://goo.gl/maps/w1GZ8qjPZb92, https://goo.gl/maps/YzYaSDnR2NT2

TRAFFIC RESTRICTIONS:                 

The work on the I-75 BL/M-72 bridge in Grayling will require full closure and a detour for passenger vehicles on city streets: on State Street, Maple Street and Michigan Avenue for northbound traffic, and Michigan Avenue, Maple Street and Alger Street for southbound traffic.

Commercial traffic will be detoured on I-75. Eastbound M-72 traffic will be detoured north on I-75 BL to Hartwick Pines Road (Exit 259), south on I-75 to 4 Mile Road (Exit 251), then north to the Grayling exit (Exit 254) before heading east on M-72. Westbound M-72 traffic will be detoured south on I-75 at Exit 254, north on I-75 at Exit 251, and south on the I-75 BL from Exit 259.

For the M-72 bridge east of Grayling, the work will require a lane closure with temporary traffic signals.

grayling i-75 work

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