List of Interstate Highways in Wyoming

The 'Interstate Highways in Wyoming are the segments of the Dwight D. Eisenhower National System of Interstate and Defense Highways owed and maintained by the Wyoming Department of Transportation.

Signage for Interstate 25, Interstate 180, and Interstate 80 Business
Highway names
InterstatesInterstate X (I-X)
Business routes:Interstate X Business (I-X Bus.)
System links

State highways in Wyoming

Mainline highways
Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
I-25 300.53483.66 I-25 / US 87 at the Colorado state line towards DenverI-90 / US 87 at Buffalo, Wyoming with passageways to Billings, Montana and Rapid City, South Dakota 01956-01-011956current
I-80 402.78648.21 I-80 / US 189 at the Utah state line towards Salt Lake CityI-80 at the Nebraska state line towards Ogallala 01956-01-011956current Lincoln Highway
I-90 208.80336.03 I-90 / US 87 at the Montana state line towards BillingsI-90 / US 14 at the South Dakota state line towards Rapid City 01956-01-011956current
I-180 1.091.75 I-80 in CheyenneI-80 Bus. / US 30 in Cheyenne 01984-01-011984current Not funded to Interstate highway standards

Business routes
Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
I-25 Bus. —— —— —— Serves Cheyenne
I-25 Bus. —— —— —— Serves Chugwater
I-25 Bus. —— —— —— Serves Douglas
I-25 Bus. —— —— —— Serves Glenrock
I-25 Bus. —— —— —— Serves Casper
I-25 Bus. —— —— —— Serves Buffalo
I-80 Bus. —— —— —— Serves Evanston
I-80 Bus. —— —— —— Serves Fort Bridger and Lyman
I-80 Bus. —— —— —— Serves Rock Springs
I-80 Bus. —— —— —— Serves Rawlins
I-80 Bus. —— —— —— Serves Laramie
I-80 Bus. —— —— —— Serves Cheyenne
I-90 Bus. —— —— —— Serves Sheridan
I-90 Bus. —— —— —— Serves Buffalo
I-90 Bus. —— —— —— Serves Gillette
I-90 Bus. —— —— —— Serves Moorcroft
I-90 Bus. —— —— —— Serves Sundance

See also
  •  U.S. Roads portal

References
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