State Highway 151 (abbreviated SH-151 or OK-151) runs 2.30 miles (3.70 km) across Keystone Dam in northeastern Oklahoma. Its entire length is within Tulsa County. The route has no lettered spur routes.

SH-151 was ostensibly assigned to Keystone Dam upon its completion in 1964.

State Highway 151 begins at a trumpet interchange with SH-51 east of Mannford. While elevated from this interchange, the highway crosses the BNSF Railway. SH-151, running north-northeast, then serves as the eastern boundary of Keystone State Park. It then runs across the top of Keystone Dam; on the west side of the dam lies Keystone Lake, while on the east side is the Arkansas River. After crossing the dam, the route ends at US-64/US-412 at another trumpet interchange, west of Sand Springs.

Keystone Dam was completed in 1964. The dam was first shown as a state highway on the 1965 state highway map. No SH-151 shield was shown on this map, however; presumably it was omitted for space reasons. The highway would remain unlabeled on the official state maps until the 2008 edition.

The entire route is in Tulsa County.

Location	mi	km	Destinations	Notes
​	0.00	0.00	SH-51	Southern terminus; trumpet interchange
​	2.30	3.70	US-64/US-412	Northern terminus; trumpet interchange
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

• SH-151 at OKHighways
• SH-151 at Roadklahoma