Interstate 280 (Illinois-Iowa)

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Interstate 280
Auxiliary route of the Interstate Highway System

Length:

26.95 mi (43.37 km)

West end:

Interstate 80 near Davenport, IA

Major
junctions:

I-74 in Rock Island, IL

East end:

Interstates 74/80 near Colona, IL

Interstate 280 (abbreviated I-280) is a 26.95 mile-long highway that makes up the western and southern portions of the beltway around the Quad Cities of Illinois and Iowa. The freeway starts at I-80 near Davenport, Iowa and ends at I-80 near Colona, Illinois; its eastern part runs concurrent with I-74 to get back to I-80. I-280 forms the southern part of a circle around the Quad Cities as well as forming part of a bypass (along with I-80) for US Highway 61 around Davenport.

1 Route description
- 1.1 Iowa
- 1.2 Illinois
2 History
3 Interchanges
- 3.1 Iowa
- 3.2 Illinois
4 References

[edit] Route description

Interstate 280 runs through the following states:

[edit] Iowa

In Iowa, I-280 runs along a mostly rural area for 9.5 miles (15.3 km). The portion in Iowa begins at the junction with I-80 on the northwest side of Davenport, to the I-280 Bridge over the Mississippi River into Illinois. This segment runs mostly north-south, before turning southeast towards the Mississippi River.

[edit] Illinois

In Illinois, I-280 runs for about 18 miles (29 km). It runs southeast from the I-280 Bridge to Milan, where it parallels the Rock River. I-280 joins with I-74 at the Quad Cities International Airport; this multiplex continues for 9.4 miles (15.1 km) before terminating at the I-74/I-80 interchange.

[edit] History

Interstate 280 has been at the center of a few debates regarding its routing. In the early 1990s, the state of Illinois suggested, via AASHTO and ISTEA hearings, swapping the I-80 and I-280 designations around the Quad Cities. This was challeneged by the state of Iowa, and the idea was dropped.

One of the reasons Illinois pursued the matter was due to the configuration of the eastern terminus of I-280; as a simple cloverleaf interchange, through I-80 traffic (along the north and east branches) was required to exit on both directions. Thru I-74 traffic (along the west and south branches) is also required to exit on both directions. I-280 runs due west from the interchange.

[edit] Interchanges

[edit] Iowa

County	Location	Mile	#^[1]	Destinations	Notes
Scott	Unincorporated	0.0	None	Interstate 80 — Des Moines, Chicago	Western terminus of I-280.
			1	U.S. Route 6
			4	Locust Street
			6	U.S. Route 61
			8	Iowa Highway 22

[edit] Illinois

County	Location	Mile	#^[2]	Destinations	Notes
Rock Island	Colona		11A-B	Illinois Route 92 — Andalusia, Rock Island
	Milan		15	Airport Road — Milan, To U.S. Route 67
	Milan		18A-B	Interstate 74 West, U.S. Route 6 — Moline, Illinois, Quad City Airport	Eastbound I-74 multiplexes with I-280 eastbound, leaving the intersection eastbound. U.S. 6 crosses north-south through intersection. Westbound I-74 joins with U.S. 6 westbound, leaving the intersection northbound.
Henry	Unincorporated	26.95	None	Interstate 74 East, Interstate 80 — Peoria, Des Moines, Iowa, Chicago	Eastern terminus of I-280. I-74 multiplexes westbound with I-280. I-74 forms southern portion of interchange, while I-80 forms north and eastern portions of interchange.

[edit] References

^ Mapquest. Retrieved on 2006-12-08.
^ Sarjeant, Charles (2005-06-18). Illinois Highway Ends - I-280. Retrieved on 2006-12-08.

	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