U.S. Route 18 in Wyoming

U.S. Highway 18
US 18 highlighted in red
Route information
Maintained by WYDOT
Length98.727 mi (158.886 km)
Major junctions
West end I-25 / US 20 / US 26 / US 87 at Orin
Major intersections
North end US 18 at the South Dakota state line near Mule Creek Junction
Location
CountryUnited States
StateWyoming
CountiesConverse, Niobrara
Highway system
  • Wyoming State Highway System
WYO 14 US 20

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. US 18 continues east to its terminus in Milwaukee, Wisconsin.