U.S. Federal Route 40 runs east-west across Northern Belmont County. This runs along Interstate 70 across much of Belmont County. U.S. Rt. 40 passes through the following towns in Belmont County. Hendrysburg Morristown St. Clairsville Blane Lansing Bridgeport U.S. Rt. 40 is multi-plexed in Belmont County. Interstate 70, from the Belmont/Guernsey County Line to near Morristown.
Ohio State Route 9, at St. Clairsville. U.S. Rt. 250, at Bridgeport.