INTERSTATE 255

'Interstate 255' (abbreviated 'I-255') is a bypass route of Interstate 55 near St. Louis, Missouri and with Interstate 270, it forms a loop around the city. Even though St. Louis is in Missouri, a majority of the route runs through Illinois. It shares its southern terminus with 270 at the junction with Interstate 55, 270 goes to the west and 255 goes to the east. U.S. Route 50 is co-signed with both 270 and 255 here. It crosses the Mississippi River, enters Illinois, and then turns north. There is a junction with Interstate 64, where US-50 breaks off and goes east, and then further north there is a junction with Interstate 55 again, Interstate 70, and U.S. Route 40, all of which are all co-signed together. The next junction is another one with Interstate 270, and it is the northern terminus of Interstate 255. After that, it becomes Illinois Route 255.
Interstate 255 is 30.82 miles in length.Kurumi. 3-digit Interstates from I-55. Last updated January 20, 2006. Retrieved June 2, 2006.

Contents

Exit list

Missouri

Illinois

Major Cities

References

Exit list

The numbering scheme begins at Interstate 55; however, the numbering scheme continues in Illinois with mile marker 4 instead of restarting at mile marker 1. Otherwise, two consecutive exits (Koch Road and Illinois Route 3) would be consecutively numbered Exit 3, creating confusion among drivers.

Missouri

County	Location	Mile	# Mapquest	Destinations	Notes
St. Louis	St. Louis		1A-B	Interstate 55
			1C	U.S. Route 61 and U.S. Route 67 — Lemay Ferry Road	eastbound there is also an Exit 1D for Lemay Ferry; this was an existing exit prior to the rebuild of the I-255/I-270/I-55 interchange; westbound at Exit 1A U.S. Route 50 exits onto Lindbergh Road
			2	Route 231 — Telegraph Road
			3	Koch Road

Illinois

County	Location	Mile	# Mapquest	Destinations	Notes
Monroe	Columbia		6	Illinois Route 3	Illinois 3 overlaps I-255 and U.S. 50 traveling northbound.
St. Clair	Dupo		9	Main Street
	Falling Spring		10	Illinois Route 3	Illinois 3 overlaps I-255 and U.S. 50 traveling southbound.
	Cahokia		13	Illinois Route 157
			15	Moussette Lane	Exit to GCS Ballpark.
	Centreville		17A-B	Illinois Route 15 — New Missouri Avenue
			19	State Street
	Washington Park		20	Interstate 64, U.S. Route 50 — St. Louis, Missouri, Louisville	U.S. 50 West overlaps I-255 southbound.
Madison	Collinsville		24	Collinsville Road
			25A-B	Interstates 55/70, U.S. Route 40 — St. Louis, Missouri, Chicago, Indianapolis, Indiana
			26	Horseshoe Lake Road
	Pontoon Beach		29	Illinois Route 162
			30A-B	Interstate 270 — Kansas City, Missouri, Indianapolis, Indiana 2.5px Illinois Route 255 — Alton	Northern terminus of I-255. Freeway continues northbound as Illinois Route 255.

Major Cities

★ Mehlville

★ Columbia

★ Dupo

★ Cahokia

★ Centreville

★ E. St. Louis

★ Collinsville

★ Pontoon Beach

★ Edwardsville

References