City of Romulus issued the following announcement on Mar 10.
The Romulus Police Department enforces seasonal weight restrictions or "frost laws" to protect area roads from excess weight. Roads can be quite fragile in late winter as frost comes out of the ground.
As frost melts beneath a paved road, the roadbed turns wet and spongy because water is trapped between the pavement and the remaining ice layer beneath. When trucks and heavy equipment travel over a layer of concrete or asphalt that isn’t well supported beneath, lots of permanent cracks can occur.
Companies and residents can visit https://micountyroads.org/business/seasonal-weight-restrictions/ to see which roads in Wayne County and also the State of Michigan are impacted.
Original source can be found here.