U.S. Route 310
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| Route information | |
| Auxiliary route of US 10 | |
| Length: | 102.57 mi (165.07 km) 47.93 mi (77.14 km) in Wyoming 54.646 mi (87.944 km) in Montana |
| Existed: | 1926 – present |
| Major junctions | |
| South end: |
    US 14 / US 16 / US 20 / WYO 789 in Greybull, WY
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| North end: |
  I‑90 Bus. / S-532 in Laurel, MT
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| Location | |
| States: | Wyoming, Montana |
| Highway system | |
U.S. Route 310 (US 310) is a spur of U.S. Route 10. It runs for 108 miles (174 km) from Laurel, Montana to Greybull, Wyoming. It passes through the states of Montana and Wyoming. Near the town of Lovell, Wyoming, US 310 is concurrent with US 14A for approximately 3 miles (4.8 km).
US 310 starts at a junction with US 14, US 16, and US 20 west of Greybull; Highway 789 continues north along US 310 through the desert. Near the town of Lovell, US 310 passes by Lovell Lakes before turning west through a brief stretch of farmland that extends into Cowley. From Cowley, the highway runs west to Deaver, then due north to Frannie, where it straddles the boundary between Big Horn County and Park County. Just to the north of Frannie, US 310 bends slightly to the west, so that the road is actually inside Park County by about 400 feet before reaching the Montana state line. At the state line, Wyoming Highway 789 ends and US 310 continues northwest into the desert. At the junction with Montana Highway 72, US 310 turns north, passing through farmland and the towns of Bridger and Fromberg before running concurrently with US 212. The highway enters the city of Laurel, where US 212 continues onto I-90, and US 310 ends at Main Street.
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Wikipedia