Interstate 255, MissouriRoads of the Mid-South & West > Highways of the State of Missouri > Interstate 55, Missouri > Interstate 255, Missouri

Interstate 255

Interstate 255 is a 3 mile section of the belt-loop around the St. Louis Metro area. It runs East-West from Interstate 55/270 to the Illinois State Line.


WB I-255/U.S. Rt. 50 just past M.P. 3.

While in Missouri I-255 is multi-plexed.

I-255 is multi-plexed with...

...U.S. Rt. 50, from the Illinois State Line to M.P. 1 in Mehlville.


Interstates that I-255 crosses in Missouri...
Interstate 55, at Mehlville/Lemay, MO
Interstate 270, at Mehlville/Leamy, MO

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

A BGS 3/4 mile from I-55.

A mileage sign on WB I-255.

A BGS near I-55.

WB I-255 at I-55.

EB I-270 at I-55/255.

I-255 Countinues on...


Info on the parent highway of I-255.




Construction warning sign on NB IL St Rt 3 in Columbia, IL. (Sept. 2003)

SB I-255/WB U.S. Rt. 50 at the Missouri State Line.

NB I-255/EB U.S. Rt. 50 crossing the JB Bridge.

NB I-255/EB U.S. Rt. 50 at the JB Bridge.

NB I-255/EB U.S. Rt. 50 near the JB Bridge.

SB I-255/WB U.S. Rt. 50 at the Missouri Welcome Sign.

SB I-255/WB U.S. Rt. 50 at the Missouri Welcome Sign.

A set of guide markers on SB MO St Rt 231.

A guide marker on SB MO St Rt 267.

SB I-255/WB U.S. Rt. 50 near Lemay Ferry Road.

A BGS for I-55/255/270 on a ramp from U.S. 50/61/67.

A similar sign on NB I-55.

Signage on EB I-44 near St. Louis advising motorists how to by-pass the metro area.

A BGS on SB I-55.

The western end of I-255.

The western end marker.

Sign indcating the end of I-270 in South County.

25 November 2014