Ohio State Route 15 is a north-south highway in the center of the county. This connects Bryan to Pioneer and the Ohio Turnpike. OH St Rt 15 passes through the following towns in Williams County. Bryan West Jefferson Holiday City Pioneer OH St Rt 15 is multi-plexed in Williams County. U.S. Rt. 127, from the Williams/Defiance County Line to near Bryan. Ohio State Route 2, near Bryan. U.S. Rt. 20A, near Holiday City. OH St Rt 15 intersects the following highways in Williams County. U.S. Rt. 6, near Bryan. Ohio State Route 2, near Bryan. Ohio State Route 2, near Bryan. Ohio State Route 34, at Bryan. U.S. Rt. 127, near Bryan. U.S. Rt. 20A, near West Jefferson. Ohio State Route 107, near West Jefferson. Interstate 80, at Holiday City. Interstate 90, at Holiday City. Ohio Turnpike, at Holiday City. U.S. Rt. 20A, near Pioneer. U.S. Rt. 20, at Pioneer.
The first BGS on EB I-80/90/OH Turnpike. Another BGS on EB I-80/90/OH Turnpike. EB I-80/90/OH Turnpike at OH St Rt 15.
