Wyoming Highway 31
|Cold Springs Road|
|Maintained by WYDOT|
|Length:||22.09 mi (35.55 km)|
|West end:||US 16 / US 20 / WYO 789 in Manderson|
|East end:||CR R49 in Hyattville|
Wyoming Highway 31 (WYO 31) is a 22.09 miles (35.55 km) Wyoming state highway known locally as Cold Springs Road. Located in southern Big Horn County, the highway serves the town of Manderson and the community (CDP) of Hyattville.
Wyoming Highway 31 is an east-west highway that starts in the town of Manderson at US 16/US 20/WYO 789 and heads north through Manderson as Sherman and Marshall Streets, but turns east as it leaves the town to head toward Hyattville. In addition Medicine Lodge State Archaeological Site  in Hyattville can also be reached by using Highway 31. Nearing its end, WYO 31 turns south and enters the community of Hyattville and passes through the community as Main Street. The Highway 31 designation ends south of Hyattville. The roadway continues as Big Horn CR R49.
The entire route is in Big Horn County.
|Manderson||0.00||0.00||US 16 / US 20 / WYO 789 – Worland, Basin||Western terminus|
|Hyattville||22.09||35.55||CR R49||Eastern terminus|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- Official 2003 State Highway Map of Wyoming