Significant traffic delays on WB I-270, 367 to West Florissant

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ST. LOUIS, MO (KTVI)- If you're headed into St. Louis from Illinois expect major delays. There is a significant traffic backup on I-270 and Highway 367. The three and a half mile backup starts on the Chain of Rocks Bridge and goes from Lilac to West Florissant Avenue.

Drivers are encouraged to use an alternate route.