City of Buffalo issued the following announcement on March 5
Every spring, in an attempt to preserve the more than 500 miles of roads on the county’s road system, the Wright County Highway Department places weight restrictions for vehicles on County State Aid Highways (CSAH) and county roads. The weight limits don’t apply to the standard cars and trucks that are on the road, it is directed at semi truck traffic carrying full loads.
Wright County Highway Engineer Virgil Hawkins said the reason spring weight restrictions are placed on the roads – typically an eight-week period – is because roads in Minnesota are most vulnerable to sustaining significant damage as frost comes out of the ground and the roads are brittle during the thawing process.
Original source can be found here.
Source: City of Buffalo