Roads of the Mid-South & West > Highways of the State of Illinois > Illinois State Route 200's > Illinois State Route 203 > Illinois State Route 203, St. Clair County

Illinois State Route 203
St. Clair County

Illinois State Route 203 runs briefly in Northwestern St. Clair County. It runs from I-55/70/U.S. Rt. 40 to the St. Clair/Madison County Line.

IL St Rt 203 intersects the following highways in St. Clair County.
Madison


IL St Rt 203 is not multi-plexed in St. Clair County.

IL St Rt 203 intersects the following highways in St. Clair County.

Interstate 55, at Madison.
Interstate 70, at Madison.

U.S. Rt. 40, at Madison.


SB IL St Rt 203 at the St. Clair/Madison County Line.

NB IL St Rt 203 near Gateway Speedway.

NB IL St Rt 203 north of I-55/70; U.S. Rt. 40.

A BGS on NB I-55; EB I-70/U.S. Rt. 40.

A BGS on SB I-55; WB I-70/U.S. Rt. 40.

A BGS on NB I-55; EB I-70/U.S. Rt. 40.

A BGS on NB I-55/EB U.S. Rt. 40.

NB IL St Rt 203 at the southern start.

The southern end point. (September, 2007)

The southern end marker.

The "0" St. Clair County mile marker.

24 January 2018