Interstate 255, Illinois
Roads of the Mid-South & West > Highways of the State of Illinois > Interstate 55, Illinois > Interstate 255, Illinois

Interstate 255

Interstate 255 in Illinois forms the majority of the Metro-East portion of the belt-loop for the St. Louis Metro. I-255 enters Illinois at the J.B. Bridges on the southeastern side of the StL Metro and heads north and ends at the junction of Interstate 270 and Illinois State Route 255 on the north east side of the metro area.

Southbound I-255 near Mousette Lane in Centreville, IL


While in Illinois I-255 is multi-plexed several times...

I-255 is multi-plexed with...
...U.S. Rt. 50, from the Missouri/Illinois State Line to Interstate 64.

...Illinois State Route 3, from MP6 to MP10.



Southbound I-255 near the J.B. Bridge at the Mississippi River south of Downtown St. Louis, MO.


Interstates that I-255 crosses in Illinois.


Interstate 64, at Caseyville/East St. Louis.

The one mile BGS on SB I-255.

Overhead lane marker on SB I-255.

BGS on SB I-255.

Overhead BGS's at the ramp to I-64 on SB I-255.

The first BGS on SB I-255 south of IL St Rt 15.

A BGS on SB I-255 over one mile.

A BGS on SB I-255.

SB I-255 at I-64.

Interstate 55, at Collinsville
Interstate 70, at Collinsville

The first BGS on SB I-255.

Another BGS on SB I-255.

The first BGS on NB I-255.

The one mile BGS on NB I-255.

A BGS near I-55/70.

The overhead BGS's on NB I-255.

The BGS on NB I-255 for SB I-55/WB I-70.

Interstate 270, at Pontoon Beach

The BGS one mile from NB I-270.

NB I-255 one mile from I-270.

NB I-255 near I-270.

NB I-255 at I-270.


Info on I-255's parent route.



SB I-255/WB U.S. Rt. 50 at the Mississippi River.

SB I-255/WB U.S. Rt. 50 at the J.B. Bridge.

SB I-255/WB U.S. Rt. 50 crossing the Mississippi River.

NB I-255/EB U.S. Rt. 50 on the Illinois side of the JB Bridge.

NB I-255/EB U.S. Rt. 50 at the Illinois Welcome sign. (2006)

A closer look at the signs in the photo above. (2002)

NB I-255/EB U.S. Rt. 50 at the Illinois Welcome sign. (September, 2007)

A mileage sign on SB I-255/WB U.S. Rt. 50.

A BGS on NB I-255/EB U.S. Rt. 50.

A BGS on NB IL St Rt 3.

A set of overhead BGS's on NB IL St Rt 3.

A BGS on SB I-255/IL St Rt 3; WB U.S. Rt. 50.

SB I-255/IL St Rt 3; WB U.S. Rt. 50 near Columbia, IL.

SB I-255/IL St Rt 3; WB U.S. Rt. 50 south of the Monroe/St. Clair County Line.

SB I-255/IL St Rt 3; WB U.S. Rt. 50 at the Monroe/St. Clair County Line.

NB I-255/IL St Rt 3; EB U.S. Rt. 50 north of the Monroe/St. Clair County Line.

Southbound I-255 just past IL Rt. 3 interchange near Dupo, IL.

A set of junction markers on NB Old IL St Rt 3.

A set of guide markers on SB Old IL St Rt 3 in Dupo.

NB I-255/EB U.S. Rt. 50 at IL St Rt 3 near Dupo.

NB I-255/EB U.S. Rt. 50 north of IL St Rt 3.

NB I-255/U.S. Rt. 50 near Frank Holten State Park.

A replica of the birdman tablet found at Cahokia Mounds in 1971. This is found on most of the bridge sides on I-255.

A BGS on WB I-255/U.S. Rt. 50.

Overhead sign on EB I-64.

SB guide marker on I-255.

A mile marker on SB I-255.

SB I-255 near Caseyville.

A SB guide marker with the interstate system sheild and the 50th anniversery shield.

A BGS in Collinsville.

A BGS in Collinsville.

NB I-255 near Collinsville.

NB I-255 at the Madison/St. Clair County Line.

A set of guide markers on EB IL St Rt 162.

A guide BGS on Horselake Road.

A guide marker on NB IL St Rt 203.

SB I-255 south of IL St Rt 162.

NB I-255 at IL St Rt 162. NOTE: The control city.

A BGS on SB I-255.

SB I-255 near IL St Rt 162.

A guide sign on EB I-270.

14 November 2017