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I-270 East - Exit 31
I-270 East - Exit 31

I-270 East approaching Exit 31 - MO-367/Alton IL/Saint Louis. Continue east on I-270 to Chicago, IL.

Taken 03-27-2026

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Nearby Signs
Shield Inside Sign Big Green Sign Overhead Freeway Junction Interchange
I-270 (Saint Louis) MO-367 Bellefontaine Neighbors Saint Louis County Missouri United States
I-270 (Saint Louis) Exit 30
Exit 31
Current Location
I-270 (Saint Louis) Exit 33