The Michigan Department of Transportation (MDOT) will be investing $3.3 million to upgrade I-75 north of Saint Ignace to south of Sault Ste Marie.
Work includes about 57 miles of freeway sign upgrades, overhead sign structures, guardrail upgrades, and reflective roadside delineators.
Work starts Tuesday, April 19, and is expected to be finished in October. A minimum of one lane will be open at all times on northbound and southbound I-75. All work will be performed during daytime hours. Drivers should expect intermittent shoulder or single-lane closures. A 12-foot lane width restriction will be in effect.
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