Idaho State Highway 37
| Rockland Highway | ||||
SH-37 highlighted in red | ||||
| Route information | ||||
| Maintained by ITD | ||||
| Length | 31.231 mi (50.261 km) | |||
| Major junctions | ||||
| South end | Rockland Highway near Roy | |||
| North end | I-86 / I-86 BL near American Falls | |||
| Location | ||||
| Country | United States | |||
| State | Idaho | |||
| Counties | Power | |||
| Highway system | ||||
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State Highway 37 (Rockland Highway/SH-37) is a 31.231-mile (50.261 km) north–south state highway in Power County, Idaho, United States, that connects Rockland Highway (south of Roy) with Interstate 86/U.S. Route 30 in Idaho (I-86/US 30), southwest of American Falls.