Utah State Route 171
| 3500 South/3300 South | ||||
SR-171 highlighted in red | ||||
| Route information | ||||
| Maintained by UDOT | ||||
| Length | 15.660 mi (25.202 km) | |||
| Existed | 1935–present | |||
| Major junctions | ||||
| West end | SR-111 in Magna | |||
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| East end | I-215 in Millcreek | |||
| Location | ||||
| Country | United States | |||
| State | Utah | |||
| Counties | Salt Lake County | |||
| Highway system | ||||
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State Route 171 (SR-171) is a state highway in the Salt Lake City metropolitan area in northern Utah that runs from SR-111 in Magna in the west side of the city to Interstate 215 in the city of Millcreek in the eastern part valley. In its sixteen-mile span, the route is named 3500 South and 3300 South.