Interstate 280 (Illinois-Iowa)

From Wikipedia, the free encyclopedia

Interstate 280 Auxiliary route of the Interstate Highway System
Length:	26.98 mi[1] (43.42 km)
West end:	I-80 near Davenport, IA
Major junctions:	I-74 in Rock Island, IL
East end:	I-74/80 near Colona, IL
< IA 279 IA IA 281 > Illinois Routes < I-270 I-290 >

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 U.S. Highway 61 around Davenport.

Contents 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	#[2]	Destinations	Notes
Scott	Rural Davenport	0.0	None	Interstate 80 — Des Moines, Chicago	Western terminus of I-280.
			1	U.S. Route 6 (Kimberly Rd.)
			4	Locust Street
			6	U.S. Route 61 (River Dr.)
			8	Iowa Highway 22 (Rockingham Rd.)

[edit] Illinois

County	Location	Mile	#[3]	Destinations	Notes
Rock Island	Rock Island		11A-B	Illinois Route 92 — Andalusia, Rock Island
	Milan		15	Airport Road — Milan, To U.S. Route 67
			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	Colona	26.95	None	Interstate 74 East — Peoria Interstate 80 — 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

	edit Auxiliary routes of Interstate 80
	Current and Future (F)	Former
	Illinois - Nebraska - Pennsylvania - Wyoming	California - Pennsylvania
	California - Illinois/Iowa - New Jersey - Ohio	Nebraska - Pennsylvania
	California - Iowa - Pennsylvania
	Iowa/Nebraska - Ohio	California - Pennsylvania
	California - Nevada	Nebraska
	California - Iowa/Nebraska - Ohio	Pennsylvania
	California
	California
	California