Interstate 180 (Wyoming)

Interstate 180
Interstate 180
	I-180 highlighted in red
Route information
	Auxiliary route ofI-80
	Maintained byWYDOT
Length	1.09 mi(1.75 km)
Existed	1984–present
NHS	Entire route
Major junctions
South end	; I-80/I-25 BL/US 85/US 87 Bus.inCheyenne
North end	; I-80 BL/US 30/I-25 BL/US 85/US 87 Bus.in Cheyenne
Location
Country	United States
State	Wyoming
Counties	Laramie
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future; Wyoming State Highway System; Interstate; US; State;

Interstate 180(I-180) is a 1.09-mile-long (1.75 km)expresswayin the US state ofWyomingbetweenI-80and downtownCheyenne.

It is unusual for being one of the fewInterstate Highwaysthat does not conform toInterstate Highway standards.There is also nocontrol of accessanywhere along its route.^[1]^{[failed verification]}Other routes inAlaskaandPuerto Ricoare similar in nature, as they are funded by Interstate dollars but do not conform to Interstate Highway standards.^[2]The onlygrade separationsare adiamond interchangeat its southern end (at a junction with I-80) and a pair of bridges that run over 1st Street and theUnion Pacific Railroadtracks. However, even the interchange with I-80 is a standard diamond with signalized intersections. There are fivetraffic signalsalong I-180.

I-180 is cosigned withI-25 Business Loop(I-25 BL),US Highway 85(US 85), and US 87 Business (US 87 Bus.), making it the onlyconcurrencyof an Interstate, Interstate business route, US Highway, and US Highway business route. It is also the onlyauxiliary Interstate Highwayin Wyoming.

Route description

I-180 begins at adiamond interchangewithI-80inCheyenne,heading northconcurrentlywithI-25 BL/US 85/US 87 Bus.on the four-lanedividedNorth Greeley Highway. South of this interchange, I-25 BL/US 85/US 87 Bus. continues along North Greeley Highway. From the southern terminus, I-180 passes over Deming Drive and passes local homes and businesses. The road curves northwesterly and intersects 5th Street at a traffic light. The highway 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 largeUnion Pacific Railroadyard. After this bridge, I-180 reaches its northern terminus at an at-grade signalized intersection withI-80 BL/US 30.Past this intersection, I-25 BL/US 85/US 87 Bus. continues north on theone-way pairingof Warren Avenue northbound and Central Avenue southbound.^[3]

History

I-180 was conceived in November 1967, when Wyoming requested it for a new spur route into Cheyenne. TheAmerican Association of State Highway Officialsadded it to the Interstate Highway System in June 1970. The original plan was to have a freeway along the same corridor, with a full freeway-to-freeway interchange at I-80, but theFederal Highway Administration(FHWA) rejected it in December 1970 due to high cost and access issues. Wyoming revised the proposal to the current configuration in February 1971, and it was approved by the FHWA that March. I-180 opened in June 1984, after six years of expressway upgrades.^{[citation needed]}

Major intersections

The entire route is inCheyenne,Laramie County.

mi^[4]	km	Destinations	Notes
0.00	0.00	US 85south (I-25 BL/US 87 Bus.south) –Greeley	Continuation beyond I-80; southern end of I-25 BL/US 85/US 87 Bus. concurrency
0.00	0.00	I-80–Rock Springs,Sidney	Signalized interchange; southern terminus; I-80 exit 362
0.34	0.55	5th Street	Signalizedat-grade intersection
0.61	0.98	9th Street	Signalized at-grade intersection
1.09	1.75	I-80 BL/US 30(Lincolnway)	Signalized at-grade intersections; northern terminus
		I-25 BL/US 85/US 87 Bus.north (Warren Avenue)	One-way street; outbound access only; continuation beyond US 30; northern end of I-25 BL/US 85/US 87 Bus. concurrency
		I-25 BL/US 85/US 87 Bus.(Central Avenue)	One-way street; inbound access only; northern end of I-25 BL./US 85/US 87 Bus. concurrency
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrencyterminus

References

^^a ^bStarks, Edward (January 27, 2022)."Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways".FHWA Route Log and Finder List.Federal Highway Administration.RetrievedJuly 3,2022.
^Starks, Edward (January 27, 2022)."Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways".FHWA Route Log and Finder List.Federal Highway Administration.RetrievedJuly 3,2022.
^"Overview Map of Interstate 180"(Map).Google Maps.RetrievedDecember 19,2013.
^Planning Program, Transportation Statistics (November 2004).Reference Marker Book.Wyoming Department of Transportation.Archived fromthe original(PDF)on March 11, 2007.RetrievedMarch 10,2007.

External links

KML file(edit•help)

Template:Attached KML/Interstate 180 (Wyoming)

KML is from Wikidata

[fhwat2-1] Starks, Edward (January 27, 2022)."Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways".FHWA Route Log and Finder List.Federal Highway Administration.RetrievedJuly 3,2022.

[fhwat1-2] Starks, Edward (January 27, 2022)."Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways".FHWA Route Log and Finder List.Federal Highway Administration.RetrievedJuly 3,2022.

[google-3] "Overview Map of Interstate 180"(Map).Google Maps.RetrievedDecember 19,2013.

[wydot-4] Planning Program, Transportation Statistics (November 2004).Reference Marker Book.Wyoming Department of Transportation.Archived fromthe original(PDF)on March 11, 2007.RetrievedMarch 10,2007.

[1]

[2]

[3]

[4]

v t e Auxiliary routesofInterstate 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