Oklahoma State Highway 15
State Highway 15 is the name for two once-connected state highways in Oklahoma. One begins at the Texas state line and runs for 47.1 miles through Woodward; the other runs for 62.4 miles between U.S. [Highway 64 (Oklahoma)|U.S. Highway 64]/U.S. Highway 412 and State Highway 18 north of Pawnee. SH-15 has no lettered spur routes.
Route descriptions
Western section
The western SH-15 begins at the Texas state line, connecting to Texas' State Highway [15 (Texas)|State Highway 15] between Catesby and Shattuck. It runs east for to US-283, which it overlaps into Shattuck. In Shattuck, SH-15 splits off to the northeast, heading through Gage and Fargo, before ending in Woodward.Eastern section
[Image:Ok15 wide.jpg|thumb|SH-15 just east of I-35]The eastern SH-15 picks up a US-64/412 south of Garber, and begins concurrent with State Highway 74 heading northbound. It splits from SH-74 to head through Billings and has an interchange with Interstate 35 at milemarker 203. It then has a five-mile concurrency with U.S. Highway 77. After leaving US-77, it passes through Red Rock, and has a concurrency with US-177, and splits off just north of the intersection with the Cimarron Turnpike. It bridges Sooner Lake and runs for 15 more miles before ending at State Highway 18 north of Pawnee.