U.S. Route 90 (Florida)

U.S. Route 90 in the State of Florida is the northernmost west-to-east U.S. route in the state although it is one of the southernmost U.S. west-to-east routes in the rest of the United States. Highway 90 passes through the county seats of all 15 counties on its course in Florida, not to mention being the address of almost every county courthouse, and is never more than six miles (10 km) from I-10 throughout the state. It runs as a two-lane highway through most of the sparsely populated inland areas of the panhandle, becoming four-lanes through and near several towns. The speed limit is for all rural points west of Monticello, and it is on all rural points beginning in Madison County to Glen St. Mary.