| Province: | SK |
| Type: | Hwy |
| Route: | 51 |
| Photo Width: | 250 |
| Length Km: | 154.7 |
| Length Round: | 1 |
| Direction B: | East |
| Terminus B: | in Biggar |
| Junction: | in Kerrobert |
| Direction A: | West |
| Terminus A: | at Alberta border west of Fusilier |
| Rural Municipalities: | Antelope Park, Heart's Hill, Prairiedale, Progress, Grandview, Biggar |
| Towns: | Kerrobert, Biggar |
| Previous Type: | Hwy |
| Previous Route: | 49 |
| Next Type: | Hwy |
| Next Route: | 52 |
Highway 51 is a provincial highway in the Canadian province of Saskatchewan. It runs from the Alberta border near Compeer, Alberta, where it is preceded by Highway 12, to Highway 4 in Biggar, 1.1km (00.7miles) south of Highway 14. Highway 51 is approximately long. It passes through the town of Kerrobert, where it shares a concurrency with Highway 21 and Highway 31.
The former western terminus of Highway 51 is at Highway 656, north of Springwater, where it met the former alignment of Highway 14.[1] When Highway 14 was realigned between Biggar and Landis, a portion of the bypassed section was renumbered and became part of Highway 51.
In 1999, the thin membrane surface section of Highway 51 east of Kerrobert was tested with a Cold in-place recycling or "CIR" method to rehabilitate highways. This CIR process is a cost-effective method which recycles the top surface of a road. This pulverized material is mixed with asphalt emulsion and spread and compacted back onto the highway surface. This surface is then recovered with a new seal dependent on traffic volume.[2]
From west to east:[3]