Interstate 180 (Wyoming)

Interstate 180
Interstate 180
North Greeley Highway
Route information
	Auxiliary route of I-80
	Maintained by WYDOT
Length	1.09 mi (1.75 km)
Existed	1984–present
NHS	Entire route
Major junctions
South end	I-80 in Cheyenne
North end	I-80 BL / US 30 in Cheyenne
Location
Country	United States
State	Wyoming
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future; Wyoming State Highway System; Interstate; US; State;

Interstate 180 (I-180) is a one-mile (1.75 km)-long connector in the U.S. state of Wyoming off Interstate 80 into downtown Cheyenne, Wyoming.

It is unusual for being the only Interstate Highway that does not conform to Interstate Highway standards, and is not even a freeway, anywhere along its route.^[1] The only grade separations are a diamond interchange at its southern end at I-80, as well as bridges over 1st Street and the Union Pacific railroad tracks. However, even the interchange with I-80 is a standard diamond with signalized intersections. It is a divided at-grade expressway with a 40 mph (64 km/h) speed limit due to the frequency of signals. There are five traffic signals along I-180.^[3] 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.^[3]

Route description

I-180 begins at a diamond interchange with I-80 in Cheyenne, heading north concurrent with I-25 Bus./US 85/US 87 Bus. on four-lane divided North Greeley Highway. South of this interchange, I-25 Bus./US 85/US 87 Bus. continue along North Greeley Highway. From the southern terminus, I-180 passes over Deming Drive and heads near homes and businesses. The road curves northwest and intersects 5th Street at a traffic light. The highway continues along and passes under a pedestrian bridge at 7th Street before crossing 9th Street at a signalized intersection. Past 9th Street, the directions of I-180 split and pass over a large Union Pacific Railroad yard. After this bridge, I-180 reaches its northern terminus at an at-grade signalized intersection with I-80 Bus./US 30. Past this intersection, I-25 Bus./US 85/US 87 Bus. continue north on the one-way pair of Warren Avenue northbound and Central Avenue southbound.^[4]

Major intersections

The entire route is in Cheyenne, Laramie County.

mi^[5]	km	Destinations	Notes
0.00	0.00	I-25 BL south / US 85 south / US 87 Bus. south – Greeley, CO, Denver, CO	Continuation past I-80
0.00	0.00	I-80 – Sidney, Rock Springs, Omaha, Salt Lake	Southern terminus; exit 362 on I-80
0.34	0.55	5th Street	At-grade intersection; signalized intersection
0.61	0.98	9th Street	At-grade intersection; signalized intersection
1.09	1.75	I-80 BL / US 30 (Lincolnway)	At-grade intersections; signalized intersections; northern terminus
1.09	1.75	I-25 BL north / US 85 north / US 87 Bus. north	Continuation past US 30
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus

References

^ ^a ^b FHWA Route Log and Finder List - Interstate System - Design - FHWA
^ It isn't clear whether Lincolnway, the road at the northern terminus of I-180 is US 30 or BUS US 30. [1] There are Business US 30 shields where W Lincolnway splits off from I-80 (Photos: [2], [3] from [4]) and on E Lincolnway (Photos: [5], [6] from [7]) but there are East US 30/West US 30 shields at other places, including the I-180 junction. [8]
^ ^a ^b Photos showing road signs and traffic lights on I-180: [9] from [10], [11] and [12] from [13].
^ "overview of Interstate 180" (Map). Google Maps. Retrieved December 19, 2013.
^ "Reference Marker Book". Wyoming Department of Transportation. November 2004. Archived from the original (PDF) on 2007-03-11. Retrieved 2007-03-10.

External links

KML file (edit • help)

Template:Attached KML/Interstate 180 (Wyoming)

KML is from Wikidata

[fhwa-1] FHWA Route Log and Finder List - Interstate System - Design - FHWA

[2] It isn't clear whether Lincolnway, the road at the northern terminus of I-180 is US 30 or BUS US 30. [1] There are Business US 30 shields where W Lincolnway splits off from I-80 (Photos: [2], [3] from [4]) and on E Lincolnway (Photos: [5], [6] from [7]) but there are East US 30/West US 30 shields at other places, including the I-180 junction. [8]

[traffic_lights-3] Photos showing road signs and traffic lights on I-180: [9] from [10], [11] and [12] from [13].

[google-4] "overview of Interstate 180" (Map). Google Maps. Retrieved December 19, 2013.

[wydot-5] "Reference Marker Book". Wyoming Department of Transportation. November 2004. Archived from the original (PDF) on 2007-03-11. Retrieved 2007-03-10.

[1]

[2]

[3]

[4]

[5]

v t e Auxiliary routes of Interstate 80
California 180¹ 238 280 380 480¹ 580 680 780 880 880¹ 980 Business Oregon 80N¹ Nevada 580 Business Idaho 80N¹ 180N¹ Utah 80N¹ Business Wyoming 180 Business Colorado 80S¹ Nebraska 80S¹ 180 280¹ 480 580¹ 680 Iowa 80N¹ 280 380 480 680 880 Illinois 180 280 Ohio 80N¹ 80S¹ 280 380² --> 480 480N 680 Pennsylvania 80N¹ 80S¹ 180 180¹ 280¹ 380 480¹ 680¹ New Jersey 80S¹ 280 680¹
¹Former
²Proposed