Interstate 180 (Wyoming)
State highways in Wyoming
| ← WYO 177 | US 185 → |
Interstate 180 (abbreviated I-180) is a spur off Interstate 80 into downtown Cheyenne, Wyoming.
It is unusual for being the only Interstate Highway that is not up to Interstate Highway standards (or even a freeway) anywhere on its route. The only grade separations are a standard diamond interchange at its southern end at I-80 and bridges over 1st Street and the Union Pacific railroad tracks. It is a divided at-grade expressway with a 40 mph (60 km/h) speed limit due to the frequency of signals. There are five traffic signals along I-180. This is nowhere near Interstate standards, but it received federal funding under the Interstate Highway program.
I-180 is cosigned with Business Loop Interstate 25, U.S. Highway 85 and U.S. Highway 87 Business, making it the only concurrency of an Interstate, a Business Loop Interstate, a U.S. route and a Business U.S. route.
Read more about Interstate 180 (Wyoming): Junction List
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