St. Clair County, Illinois

Localities: Cahokia | Collinsville | Dupo | East St. Louis

Cahokia

I-255 South - Exits 13 and 10

I-255 south at Exit 13 - IL-157/Cahokia Heights. Approaching Exit 10 - IL-3 North/Great River Road/East Saint Louis.

Collinsville

I-255 South - Exit 20

I-255 south approaching Exit 20 - I-64/US-50/Saint Louis (MO)/Louisville (KY).

I-255/IL-3 South/US-50 West approaching Exit 6 - IL-3 South/Great River Road/Columbia. Continue on I-255 South/US-50 West to Memphis (TN) and Tulsa (OK). IL-3 South leaves the freeway here. This is the last exit on I-255 South in Illinois.

I-255 South - Exit 9

I-255 South at Exit 9 - Dupo

I-255 South - Exit 10

I-255 south at Exit 10 - IL-3 North/Great River Road/Cahokia Heights/East Saint Louis. IL-3 South joins I-255 South/US-50 West to Columbia.

East St. Louis

I-255 South - Exits 17B and 17A

I-255 south at Exit 17B - IL-15 West/Missouri Ave./Saint Louis. Approaching Exit 17A - IL-15 East/Belleville.

I-255 South - Exits 17A-B

I-255 South approaching Exits 17A-B - IL-15/East Saint Louis/Belleville.

I-255 South - Exit 20

I-255 south at Exit 20. Use Exit 20 for I-64/US-50 East/Louisville (KY) and I-64 West/Saint Louis (MO). Continue on I-255 South/US-50 West to Memphis (TN) and Tulsa (OK). US-50 west joins I-255 southbound to Saint Louis, Missouri.

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