Training Courses Teach TxDOT Personnel Best Practices in Seal-Coat Projects The Texas Department of Transportation (TxDOT) maintains more than 79,000 miles of farm-to-market, ranch-to-market, state, U.S. and interstate highways. That’s more roadway than any other state. As resources are stretched thin, maintaining the roadways is a challenge. Seal coats — also known as chip seals […]