Length: 134.4 mi. Direction: south-north. Oklahoma State Highway 18 (SH-18) is a highway that begins in Shawnee where its known as Harrison Street, and ends near Shidler at the Kansas state line. The road passes through the counties of Pottawatomie, Lincoln, Payne, Pawnee, and Osage. It was opened in 1924.
POPULAR SIGNS:More signs
NEW SIGNS:More signs