# Alabama State Route 51

State Route 51 (SR 51) is a 114.183-mile-long (183.760 km) state highway in the southeastern and east-central parts of the U.S. state of Alabama. The southern terminus of the highway is at an intersection with U.S. Route 84 (US 84) near New Brockton. The northern terminus of the highway is at an interchange with I-85/US 29/US 280 at Opelika.

## Route description

While it is signed as a north–south route, the orientation of SR 51 is rather irregular. From its southern terminus near New Brockton, the highway heads in a northeasterly direction, traveling through rural areas and small towns in the southeastern part of the state.
SR 51 travels through Clio, the birthplace of former Alabama governor George C. Wallace and Baseball Hall of Fame member Don Sutton. At Clio, the highway turns briefly turns northward, then resumes its northward trajectory as it heads towards Clayton. At Clayton, the highway then turns northwestward then northward as it heads towards Midway.
At Midway, SR 51 joins US 82 and turns westward. The concurrency of the two highways ends east of Union Springs. SR 51 then resumes a northeastward trajectory until it approaches Hurtsboro. The highway then turns northward, continuing this orientation until it reaches its northern terminus at Opelika.

## History

When SR 51 was formed in 1940, it covered only the route between Clayton and Midway. The highway was extended to its current southern terminus in 1957, and was extended to its current northern terminus in 1986.

## Major intersections

| County | Location | mi | km | Destinations | Notes |
| Coffee | Enterprise | 0.000 | 0.000 | US 84 (SR 12) – Enterprise | Southern terminus |
| Coffee | Clintonville | 4.427 | 7.125 | SR 122 west – New Brockton | Eastern terminus of SR 122 |
| Coffee | ​ | 5.779 | 9.300 | SR 167 south – Enterprise | Southern end of SR 167 concurrency |
| Coffee | ​ | 5.888 | 9.476 | SR 167 north – Troy | Northern end of SR 167 concurrency |
| Dale | ​ | 19.254 | 30.986 | US 231 (SR 53) – Troy, Ozark | |
| Dale | Ariton | 22.725 | 36.572 | SR 123 north – Troy | Southern end of SR 123 concurrency |
| Dale | Ariton | 23.167 | 37.284 | SR 123 south – Ozark | Northern end of SR 123 concurrency |
| Barbour | Clio | 33.584 | 54.048 | SR 10 – Brundidge, Abbeville | |
| Barbour | Louisville | 39.738 | 63.952 | SR 130 west – Troy | Eastern terminus of SR 130 |
| Barbour | Clayton | 48.695 | 78.367 | SR 30 east – Eufaula | Western terminus of SR 30 |
| Barbour | Clayton | 49.064 | 78.961 | SR 239 south to SR 30 / West Louisville Avenue – Clayton, Eufaula | Southern end of SR 239 concurrency |
| Barbour | Clayton | 49.933 | 80.359 | SR 239 north / North Midway Street – Smuteye, Clayton, Ventress Correctional Facility | Northern end of SR 239 concurrency |
| Bullock | Midway | 64.901 | 104.448 | US 82 east (SR 6) / CR 47 north – Eufaula | South end of US 82/SR 6 concurrency |
| Bullock | ​ | 71.560 | 115.165 | US 82 west (SR 6) – Union Springs, Montgomery | North end of US 82/SR 6 concurrency |
| Macon | No major junctions | No major junctions | No major junctions | No major junctions | No major junctions |
| Russell | Hurtsboro | 85.781 | 138.051 | SR 26 east to Main Street / CR 49 – Seale | Western terminus of SR 26 |
| Lee | Marvyn | 100.356 | 161.507 | US 80 (SR 8) | |
| Lee | Opelika | 113.598 | 182.818 | SR 169 south – Crawford | Northern terminus of SR 169 |
| Lee | Opelika | 114.183 | 183.760 | I-85 / US 29 / US 280 (SR 15/SR 38) – Montgomery, Atlanta | Northern terminus; I-85 exit 60 |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus ||||||