In the restricted areas, the following will apply: This also contributes to pothole problems already occurring due to this winter’s numerous freeze-thaw cycles. During the spring thaw, the roadbed softened by trapped moisture beneath the pavement makes it more susceptible to damage. When roads that have been frozen all winter begin to thaw from the surface downward, melting snow and ice saturate the softened ground. State routes typically carry M, I, or US designations. Monday, March 1, weight restrictions will be imposed and enforced on all state trunkline highways from the Michigan border north to and including M-20 from the interchange with US-31 in Oceana County, then east on M-20 to US-131, then north on US-131 to M-20 in Mecosta County, then east on M-20 to US-10 in Midland County, then east on US-10 to M-25 in Bay City, including the entire Thumb region.Īll state trunklines in this area will have weight restrictions imposed and enforced. The Michigan Department of Transportation (MDOT) and local agencies are enacting spring weight restrictions, an annual move to protect roads.Įffective 6 a.m. The Michigan Department of Transportation enforces spring weight restrictions each year.