Interstate 180 (Wyoming)

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Interstate 180 Auxiliary route of the Interstate Highway System
Length:	1.09 mi (1.75 km)
Formed:	1984
South end:	I-80
North end:	Bus I-80/US 30 in Cheyenne, WY

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 (and not even a freeway) anywhere on its route. The only grade separations are a standard diamond interchange at its southern end at I-80, and a bridge over 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. Map Aerial photo

Photos showing road signs and traffic lights on I-180: [1] from [2], [3] and [4] from [5].

[edit] Notes

• I-180 is cosigned with Business Loop Interstate 25, U.S. Route 85 and Business U.S. Route 87 making it the only concurrency of an Interstate, a Business Loop Interstate, a U.S. route and a Business U.S. route.

[edit] External links

• I-180 at RockyMountainRoads.com
• I-180 at Interstate-Guide.com

	edit Auxiliary routes of Interstate 80
I-180	Illinois - Nebraska - Pennsylvania - Wyoming
I-280	California - Illinois/Iowa - New Jersey - Ohio
I-380	California - Iowa - Pennsylvania
I-480	Iowa/Nebraska - Ohio
I-580	California - Nevada
I-680	California - Iowa/Nebraska - Ohio
I-780	California
I-880	California
I-980	California
past/ future	I-180: California - Pennsylvania - I-280: Iowa/Nebraska - Pennsylvania - I-480: California - Pennsylvania - I-580: Nebraska - I-680: Pennsylvania

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