U.S. Route 287 in Wyoming

This article is about the section of U.S. Route 287 in Wyoming. For the entire route, see U.S. Route 287.

U.S. Highway 287 marker
U.S. Highway 287
Map
US 287 highlighted in red
Route information
Maintained by WYDOT
Length462.723 mi[1] (744.680 km)
Major junctions
South end US 287 at Colorado state line
Major intersections
North endSouthern entrance of Yellowstone National Park
Location
CountryUnited States
StateWyoming
CountiesAlbany, Carbon, Natrona, Fremont, Teton
Highway system
  • Wyoming State Highway System
← WYO 273→ WYO 290

U.S. Route 287 (US 287) is a part of the U.S. Highway System that travels from Port Arthur, Texas northwest to Choteau, Montana; broken into two segments by Yellowstone National Park where unnumbered park roads serve as a connector. In the state of Wyoming, it extends approximately 463 miles (745 km) from the Colorado state line near Tie Siding to the southern entrance of Yellowstone National Park.[1]

Route description

US 287 enters Wyoming about eight miles (13 km) south of Tie Siding; about a mile north of the state line it crosses Pumpkin Vine Hill (elevation 8,106 ft or 2,471 m),[2] a pass between the Laramie Mountains to the east and the Medicine Bow Mountains to the west. US 287 reaches Laramie where it crosses I-80 and begins a 113-mile (182 km) concurrency with US 30. The two highways head north for 57 miles (92 km) to Medicine Bow, then turn west-southwest for 36 miles (58 km) and return to I-80 near Walcott, where they merge with the interstate west for 20 miles (32 km) to Rawlins. US 287 branches off from I-80 and US 30 and heads into Rawlins concurrent with I-80 Business and US 30 Business. In downtown Rawlins, US 287 departs the Business Route and merges with WYO 789 to form a 123-mile (198 km) concurrency to Lander. US 287 heads northwest from Lander for 32 miles (51 km) to Diversion Dam Junction, about 10 miles (16 km) west of Morton, and merges with US 26 were they continue 43 miles (69 km) west to Dubois.[1][3]

US 26/US 287 near Dubois

West of Dubois, the routes become part of the Wyoming Centennial Scenic Byway, and they enter the very mountainous terrain of West Central Wyoming, crossing the Continental Divide at Togwotee Pass and enter Grand Teton National Park. At Moran, US 287 concludes its a 142-mile (229 km) concurrency with US 26 and becomes concurrent US 191 and US 89. The three routes travel 20 miles (32 km) north unsigned along side Jackson Lake. Leaving Grand Teton National Park, they travel seven miles (11 km) through John D. Rockefeller Jr. Memorial Parkway before reaching the South Entrance of Yellowstone National Park. Officially US 287 and other U.S. Routes are officially discontinuous through the park,[1] though some commercially produced maps show these highways running inside Yellowstone National Park itself along its unnumbered roads. US 287 along with US 191 resume at the West Entrance at West Yellowstone, Montana.[3]

History

U.S. Route 285 marker
U.S. Route 285
LocationColorado state line–Laramie
Length24 mi (39 km)
Existed1926–1936

The section of US 287 between Laramie and the Colorado state line was originally commissioned as US 285 in 1926, with it to continue to Denver. It was renumbered to US 287 in 1936.[4]

Major intersections

CountyLocationmi[1]kmExitDestinationsNotes
Albany​0.0000.000
 US 287 south – Fort Collins		Continuation into Colorado
Laramie24.43039.316 I-80 – Rock Springs, CheyenneI-80 exit 313
24.36639.213

 I-80 BL east / US 30 east (Grand Avenue)		Southern end of I-80 BL / US 30 concurrency
24.62839.635

 WYO 130 west / WYO 230 west (Snowy Range Road) / Harney Street – Centennial
25.47540.998

 I-80 BL west (Curtis Street) to I-80 / Reynold Street		Northern end of I-80 BL concurrency
Bosler42.00067.592
 WYO 34 east – Wheatland
Rock River63.873102.794
 WYO 13 west – McFadden, Arlington
CarbonMedicine Bow81.207130.690
 WYO 487 north – Casper
Hanna100.133161.148 WYO 72 – Hanna, Elk Mountain
Walcott Junction117.617189.286235

 WYO 130 east / WYO 230 east – Saratoga

 I-80 east – Laramie		Southern end of I-80 concurrency; exit numbers follow I-80
​124.504200.370228Fort Steele
Fort Steele Rest Area
Sinclair130.919210.694221
 WYO 76 west – Sinclair
133.231214.415219Lincoln Avenue – Sinclair
Rawlins137.255220.891215

 I-80 west / US 30 west – Rock Springs



 I-80 BL begins / US 30 Bus. begins		Northern end of I-80 / US 30 concurrency; southern end of I-80 BL / US 30 Bus. concurrency

 WYO 76 east		No northbound exit
138.023222.126

 US 287 Byp. north (Hingley Boulevard)
139.506224.513



 I-80 BL west / US 30 Bus. west / WYO 789 south (Spruce Street) – Rock Springs		Northern end of I-80 BL / US 30 Bus. concurrency; southern end of WYO 789 concurrency
141.228227.284

 US 287 Byp. south (Hingley Boulevard)		Southern end of Chief Washakie Trail
​170.322274.107
 WYO 73 west – Bairoil
181.369291.885
 WYO 220 east / California National Historic Trail / Mormon Pioneer National Historic Trail / Oregon National Historic Trail / Pony Express National Historic Trail – Casper
Natrona
 No major junctions
Fremont​223.475359.648
 WYO 135 north – Riverton
Sweetwater Station Rest Area
253.662408.229
 WYO 28 west / California National Historic Trail / Mormon Pioneer National Historic Trail / Oregon National Historic Trail / Pony Express National Historic Trail – Rock Springs
Lander262.076421.770
 WYO 789 north / Buena Vista Drive – Riverton		Southern end of WYO 789 concurrency
262.688422.755
 WYO 131 south (Snakes Canyon Road) / 5th Street
​271.405436.784
 WYO 132 north (Blue Sky Highway)
Diversion Dam Junction293.722472.700
 US 26 east – Riverton		Northern end of Chief Washakie Trail; southern end of US 26 concurrency
​296.074476.485Diversion Dam Rest Area
Dubois336.683541.839Wyoming Centennial Scenic Byway beginsSouthern end of Wyoming Centennial Scenic Byway concurrency; Wyoming Centennial Scenic Byway northern terminus
Teton​410.106660.002Togwotee Pass (Continental Divide)
Grand Teton National Park433.539697.713Grand Teton National Park boundary
435.743701.260


 US 26 west / US 89 south / US 191 south / Wyoming Centennial Scenic Byway south – Jackson		Northern end of US 26 / Wyoming Centennial Scenic Byway concurrency; southern end of US 89 / US 191 concurrency
439.755707.717Moran Entrance Station
455.951733.782Grand Teton National Park boundary
John D. Rockefeller Jr. Memorial Parkway
 No major junctions
Yellowstone National Park462.723744.680

 US 89 ends / US 191 ends		US 89 / US 191 / US 287 northern terminus; north end of US 89 / US 191 concurrency
Yellowstone National Park boundary (South Entrance)
South Entrance Road (to US 89 north / US 191 north / US 287 north)Continuation into Yellowstone National Park; US 89 resumes in Montana at the park's north entrance; US 191 / US 287 resume in Montana at the park's west entrance
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Rawlins bypass route

By-pass plate.svg
U.S. Highway 287 Bypass marker
U.S. Highway 287 Bypass
LocationRawlins
Length1.518 mi[1] (2.443 km)

U.S. Highway 287 Bypass (US 287 Byp.) serves as a 1.5-mile (2.4 km) bypass for Rawlins.

Major intersections

The entire route is in Rawlins, Carbon County.

mi[1]kmDestinationsNotes
0.0000.000


 US 287 / I-80 BL / US 30 Bus. to I-80 / US 30 – Laramie		Southern terminus
1.5182.443 US 287 / WYO 789 – Casper, LanderNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

  1. ^ a b c d e f g State Maintenance Engineer’s Office (October 1, 2017). "Maintenance Section Reference Book" (PDF). Wyoming Department of Transportation. Retrieved February 9, 2026.
  2. ^ "U.S. Highway 287". AARoads. September 11, 2014. Retrieved February 12, 2026.
  3. ^ a b Wyoming Transportation Commission (2011). Wyoming Official Highway Map (PDF) (Map). Cheyenne: Wyoming Department of Transportation.
  4. ^ "Former U.S. 285". AARoads. June 1, 2023. Retrieved February 17, 2026.
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