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U.S. Route 20 in Montana

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This article is about the section of U.S. Route 20 in Montana. For the entire route, see U.S. Route 20.
U.S. Highway 20 marker
U.S. Highway 20
Map
US 20 highlighted in red
Route information
Maintained by MDT
Length9.680 mi[1] (15.578 km)
Major junctions
West end US 20 at the Idaho state line
Major intersections US 191 / US 287 in West Yellowstone
East end US 20 / US 191 / US 287 east of the Yellowstone National Park West Entrance
Location
CountryUnited States
StateMontana
CountiesGallatin
Highway system
← MT 19→ MT 21

U.S. Route 20 (US 20) is a west-east highway that travels from Targhee Pass at the Idaho state line to the west portion of Yellowstone National Park at the Wyoming state line.

Route description

US 20 enters Montana from Idaho at Targhee Pass at the Continental Divide. From there, it curves north and east down the mountain along a tree-lined, two-lane highway with a westbound climbing lane. An access road to the north provides access to Hebgen Lake. The highway then continues through Yellowstone National Park to Wyoming.

History

Major intersections

The entire route is in Gallatin County.

Locationmi[1]kmDestinationsNotes
Continental Divide0.0000.000
 US 20 west – Idaho Falls		Continuation into Idaho
Targhee Pass; Montana–Idaho line
West Yellowstone9.31814.996

 US 191 north / US 287 north (Canyon Street north) – Bozeman		Western end of US 191/US 287 concurrency
Yellowstone National Park9.68015.578West Entrance; closed December-April
11.819.0





 To US 20 east / US 191 south / US 287 south (West Entrance Road)		Continuation into Wyoming; US 20/US 191/US 287 resume outside of Yellowstone National Park
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. ^ a b Montana Department of Transportation (January 19, 2022). "ALTIS Road Log Report" (PDF). Helena: Montana Department of Transportation. Retrieved September 13, 2014.
KML file (edit • help)
Template:Attached KML/U.S. Route 20 in Montana
KML is from Wikidata
U.S. Route 20
Previous state:
Idaho 		Montana Next state:
Wyoming
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