U.S. Federal Route 30 runs east-west across Central Richland County. It runs mostly on an expressway in the county. This goes from the Ashland/Richland County Line, near Charles Mill Lake, to the Crawford/Richland County Line, near Crestline. U.S. Rt. 30 passes through the following towns in Richland County. Mansfield Ontario U.S. Rt. 30 is multi-plexed in Richland County. U.S. Rt. 30 intersects the following highways in Richland County. Interstate 71, near Mansfield. U.S. Rt. 42, at Mansfield. Ohio State Route 545, at Mansfield. Ohio State Route 13, at Mansfield. Ohio State Route 39, at Mansfield. Ohio State Route 309, at Mansfield. Ohio State Route 314, at Ontario.
