U.S. Route 18 in Wyoming
 U.S. Highway 18 | ||||
|---|---|---|---|---|
 US 18 highlighted in red | ||||
| Route information | ||||
| Maintained by WYDOT | ||||
| Length | 98.727 mi[1] (158.886 km) | |||
| Major junctions | ||||
| West end |     I-25 / US 20 / US 26 / US 87 at Orin | |||
| ||||
| North end |  US 18 at South Dakota state line | |||
| Location | ||||
| Country | United States | |||
| State | Wyoming | |||
| Counties | Converse, Niobrara | |||
| Highway system | ||||
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U.S. Route 18 (US 18) is an east-west U.S. Numbered Highway in the state of Wyoming. It extends approximately 99 miles (159 km) from Interstate 25 (I-25) at Orin to the South Dakota state line east of Mule Creek Junction.[1][2] US 18 continues east to its terminus in Milwaukee, Wisconsin.[3]
Route description
US 18 begins in Orin concurrent with US 20 at I-25 (itself concurrent with US 20, US 26, and US 87) and travels 42 miles (68 km) east to Lusk, where US 18 branches off to run concurrently with US 85 for 47 miles (76 km). At the unincorporated community of Mule Creek Junction in northeastern Niobrara County, US 18 leaves US 85. This 10-mile (16 km) stretch from US 85 to the South Dakota border is the only segment of US 18 in Wyoming which is not cosigned with another highway.[1] Running for nearly 100 miles (160 km), US 18 has a speed limit of 70 mph (110 km/h) with the exception of its ending terminus at Orin and the portion throughout Lusk.[4]
Major intersections
| County | Location | mi[1] | km | Destinations | Notes |
|---|---|---|---|---|---|
| Converse | Orin | 0.000 | 0.000 |  I-25 / US 20 west / US 26 / US 87 – Glendo, Douglas | US 18 western terminus; western end of US 20 concurrency; I-25 exit 126 |
| | 1.818 | 2.926 |   WYO 319 south | ||
| Niobrara | Manville | 32.705 | 52.634 |  WYO 270 – Manville, Lance Creek, Guernsey | |
| | 40.214 | 64.718 | Lusk rest area | ||
| Lusk | 40.515 | 65.203 |   WYO 273 north | ||
| 41.808 | 67.283 |   US 85 south (Cedar Street) – Torrington | Western end of US 85 concurrency | ||
| 42.304 | 68.082 |  US 20 east (3rd Street) – Chadron | Eastern end of US 20 concurrency | ||
| | 63.485 | 102.169 |  WYO 270 west – Lance Creek | ||
| Mule Creek Junction | 88.573 | 142.544 |  US 85 north – Newcastle | Eastern end of US 85 concurrency | |
| | 98.727 | 158.886 | US 18 east – Edgemont, Hot Springs | Continuation into South Dakota | |
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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See also
References
- ^ a b c d State Maintenance Engineer’s Office (October 1, 2017). "Maintenance Section Reference Book" (PDF). Wyoming Department of Transportation. Retrieved January 18, 2026.
- ^ Wyoming Transportation Commission (2011). Wyoming Official Highway Map (PDF) (Map). Cheyenne: Wyoming Department of Transportation.
- ^ "U.S. Highway 18". AARoads. October 12, 2005. Retrieved January 18, 2026.
- ^ "Converse County School District 01 to Welcome To Wyoming Sign" (Map). Google Maps. Retrieved November 18, 2022.
External links
Media related to U.S. Route 18 in Wyoming at Wikimedia Commons
