Interstate 270 (Illinois-Missouri)

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Interstate 270
Auxiliary route of the Interstate Highway System

Length:

50.59 mi^[1] (81.42 km)

CCW end:

I-55/I-70 near Troy, IL

Major
junctions:

I-44

I-64

I-70

I-255

CW end:

I-55/I-255 near Mehlville, MO

ILL 267

I-280

Interstate 270 (abbreviated I-270) makes up a large portion of the outer belt freeway in the St. Louis, Missouri metropolitan area. The western terminus of I-270 (actually is the southwest portion of freeway) is at the junction with Interstate 55 in Mehlville, Missouri; the eastern terminus of the freeway is at the junction with I-70 north of Troy, Illinois. The entire stretch of I-270 is 50.59 miles. The southern/western terminus is at I-255 and I-55 near Mehlville, Missouri and the eastern/northern terminus is at I-70 and I-55 near Troy, Illinois.

Interstate 270 was formerly designated Interstate 244, a bypass of St. Louis, Missouri. It was originally proposed by Missouri as Interstate 144, but as the road was a beltway (or part of one), AASHTO assigned it the number "244".

1 Exit List
- 1.1 Missouri
- 1.2 Illinois
2 Notes
3 Infamous Events
4 References

[edit] Exit List

[edit] Missouri

Exits 1A-B: Interstate 55
Exit 2: Route 21 (Tesson Ferry Road)
Exit 3: Route 30 (Gravois Road)
Exit 5A: Interstate 44, U.S. Route 50 East, and Route 366 (Watson Road) East
Exit 5B: Interstate 44 and U.S. Route 50 West
Exit 7: Big Bend Road.
Exit 8: Dougherty Ferry Road.
Exit 9: Route 100 (Manchester Road)
Exit 12A: Interstate 64, U.S. Route 40 East, and U.S. Route 61 South
Exit 12B: Interstate 64, U.S. Route 40 West, and U.S. Route 61 North
Exit 13: Missouri SSR-AB (Ladue Road)
Exit 14: Route 340 (Olive Blvd)
Exit 16A: Missouri SSR-D (Page Ave) East
Exit 16B: Route 364 West
Exit 17: Dorsett Road
Exit 20A: Interstate 70 East
Exit 20B: Interstate 70 West
Exit 20C: Route 180 (St. Charles Rock Road)
Exit 22A: Missouri Bottom Road '(eastbound only)'
Exit 22B: Route 370 West
Exit 23: McDonnell Boulevard
Exit 25A: U.S. Route 67 (Lindbergh Blvd) South
Exit 25B: U.S. Route 67 (Lindbergh Blvd) North
Exit 26A: Interstate 170 South
Exit 26B: North Hanley Road, Graham Road
Exit 27: Missouri SSR-N (New Florissant Road)
Exit 28: Washington St, Elizabeth Ave
Exit 29: W Florissant Ave
Exit 30A: Missouri SSR-AC (New Halls Ferry Road)
Exit 30B: Old Halls Ferry Road
Exit 31A: Route 367 South
Exit 31B: Route 367 North
Exit 32: Bellefontaine Road
Exit 33: Lilac Ave
Exit 34: Riverview Drive

[edit] Illinois

County	#	Destinations	Notes
Madison	3A-B	Illinois Route 3 — Granite City, Alton^[2]
	4	Illinois Route 203 — Granite City,^[2] Old Alton Road
	6A-B	Illinois Route 111 — Pontoon Beach, Wood River^[2]
	7A-B	Illinois Route 255 North — Alton, Interstate 255 South — Memphis, Tennessee	Combined into a single exit 7 eastbound.
	9	Illinois Route 157 — Collinsville, Edwardsville^[2]
	12	Illinois Route 159
	15A-B	Interstate 70 West — St. Louis, Missouri, Interstate 55 — Chicago, Illinois	Eastern terminus of Interstate 270. Continues as Interstate 70 east of this intersection.

[edit] Notes

There were plans to sign an 8 mile section of I-270 from Glen Carbon to Edwardsville as I-870. However, this idea was nixed.^[3]
During the Great Flood of 1993, the New Chain of Rocks Bridge carrying I-270 over the Mississippi River was the only bridge open from St. Louis to Keokuk, Iowa.
The last major construction project on I-270 occurred from 1995-1998. Both the Missouri Department of Transportation and the Illinois Department of Transportation upgraded I-270 to modern standards from Lilac Ave. to I-255.
IDOT wants to widen I-270 from Lilac to I-255 from 4 lanes to 6, but no money is available at the current time.^[4]

[edit] Infamous Events

On 13 September 1999, a fatal accident involving a tractor-trailer occurred in the westbound lanes of I-270^[5] in front of the now-defunct St. Thomas Aquinas-Mercy High School (now North County Christian School) in North St. Louis County. This accident sped up efforts that led to the I-170/270 interchange reconstruction that went from 2001 to 2004.
A major chemical spill from a FedEx truck between MO 367 and Lilac exits in 28 October 2002 forced detours and lengthy delays.^[6]

[edit] References

^ Federal Highway Administration Route Log and Finder List, Main Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways as of October 31, 2002
^ ^a ^b ^c ^d Sarjeant, Charles (2006-04-13). Illinois Highway Ends - I-270. Retrieved on November 3, 2006.
^ Interstate 870. 3 digit interstates @ kurumi.com (2005-02-23). Retrieved on July 12, 2006.
^ http://www.siu.edu/~econdev/oerd/5year/supportprojects/transinfrastructureswregion.htm
^ Retrieved from http://snewpy.com/1999/09/15/270crash.html via web.archive.org
^ http://www.kmov.com/topstories/kmov_localnews_021030_270crash.10c641073.html

	edit Auxiliary routes of Interstate 70
	Current and Future (F)	Former
	Missouri	Maryland
	Colorado - Illinois-Missouri - Ohio - Maryland
	Maryland
	Kansas - Missouri - Ohio-West Virginia
	Ohio - Kansas-Missouri