U.S. Route 310

U.S. Route 310 (US 310) is a spur of historic U.S. Route 10, now Interstate 90. 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).

U.S. Route 310 marker

U.S. Route 310

US 310 highlighted in red
Route information
Auxiliary route of US 10
Length102.57 mi[lower-alpha 1] (165.07 km)
47.93 mi (77.14 km) in Wyoming[1]
54.646 mi (87.944 km) in Montana[2]
Existed1926–present
Major junctions
South end US 14 / US 16 / US 20 / WYO 789 in Greybull, WY
Major intersections
North end I-90 BL / S-532 in Laurel, MT
Location
CountryUnited States
StatesWyoming, Montana
CountiesWY: Big Horn, Park
MT: Carbon, Yellowstone
Highway system

Route description

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.[3]

History

Historically, US 310 intersected with US 10 at Laurel. After 1986, when US 10 was decommissioned west of West Fargo, North Dakota, US 310 no longer connected to its "parent" route.

Major intersections
StateCountyLocationmikmDestinationsNotes
WyomingBig HornGreybull0.000.00
 US 14 / US 16 / US 20 / WYO 789 south – Greybull, Cody, Yellowstone		South end of WYO 789 overlap
Lovell27.0343.50
 US 14A east – Burgess Junction		South end of US 14A overlap
28.7746.30 WYO 32 – Emblem
​30.2348.65
 US 14A west – Byron, Powell, Cody		North end of US 14A overlap
Cowley34.1654.98 WYO 35 / CR R7
Deaver40.1464.60 WYO 114 – Garland, Powell, Cody
Park
 No major junctions
 47.93
0.000		77.14
0.000		Wyoming–Montana state line; WYO 789 ends
MontanaCarbonBridger24.70039.751 MT 72 – Belfry, Cody
Rockvale42.62868.603
 US 212 west – Red Lodge		South end of US 212 overlap
YellowstoneLaurel54.15487.152
 I-90 / US 212 east – Billings, Butte		North end of US 212 overlap
54.64687.944 I-90 BL (Main Street) / S-532
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Notes
  1. Mileage is a summation of each state's length

References
Template:Attached KML/U.S. Route 310
KML is from Wikidata
Wikimedia Commons has media related to U.S. Route 310.
  1. "Reference Marker Book" (PDF). Wyoming Department of Transportation. November 2004. Retrieved April 12, 2012.
  2. "Montana Road Log" (PDF). Montana Department of Transportation. 2011. Retrieved April 12, 2012.
  3. Google (December 23, 2013). "US 310" (Map). Google Maps. Google. Retrieved December 23, 2013.
Browse numbered routes
← MT 287MT→ US 312
← WYO 296WY→ WYO 310
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