Interstate 280 (Illinois-Iowa)
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| Interstate 280 Auxiliary route of the Interstate Highway System |
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| Length: | 26.98 mi[1] (43.42 km) | ||||||||
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| West end: |   I-80/US 6 near Davenport, IA |
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| Major junctions: |
 I-74 in Rock Island, IL |
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| East end: | I-74/80 near Colona, IL |
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.svg/20px-US_275_(IA).svg.png){kind=small}
Interstate 280 (abbreviated I-280) is a 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. This road is 26.98 miles (43.42 km) long.[1]
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[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 17.60 miles (28.32 km).[2] 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 concurrency 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] Exit list
| County | Location | Mile | # | Destinations | Notes |
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| Scott County, IA | Davenport | .svg/20px-I-80_(IA).svg.png){kind=small} I-80 / US 6 west – Des Moines, Chicago |
Westbound exit and eastbound entrance | ||
| 1 | US 6 east / CO F58 west (Kimberly Road) – Walcott |
East end of US 6 overlap | |||
| 4 | CO F65 (Locust Street, 160th Street) – St. Ambrose University | ||||
| 6 |  US 61 (West River Drive) – Muscatine |
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| 8 |  IA 22 (Rockingham Road) – Buffalo |
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| I-280 Bridge over the Mississippi River | |||||
| Rock Island County, IL | Rock Island | 11 |  IL 92 – Andalusia, Rock Island |
Signed as exits 11A (west) and 11B (east) | |
| Milan | 15 |  To US 67 (Airport Road) – Milan |
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| Moline | 18A/5B | US 6 east – Quad City Airport |
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| 18B/5A | I-74 west / US 6 west – Moline |
West end of I-74 overlap | |||
| Henry County, IL | Colona | 26.95 | I-74 east / I-80 – Peoria, Des Moines, Chicago |
Eastbound exit and westbound entrance | |
[edit] References
- ^ a b Route Log- Auxiliary Routes of the Eisenhower National System of Interstate and Defense Highways - Table 2
- ^ Illinois Technology Transfer Center (2006). T2 GIS Data. Retrieved on 2007-11-08.
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