What is the maximum weight for an over the road truck in the US including the cargo and trailer?

There are several types of trucks which drive OTR. For a single axle expedited truck, it's 33,000 lbs. For a tandem axle expedited truck, it's 54,000 lbs. For either a standard five axle tractor-trailer combination or a set of A-doubles, it's 80,000 lbs (although some states will allow a set of A-doubles to run 92,000 lbs).