Chain-reaction accident on I-55 at Gasconade causes traffic backup in St. Louis

ST. LOUIS, MO (KTVI) – A crash involving 15-20 vehicles closed southbound I-55 Wednesday at around 3pm. The chain-reaction accident happened at I-55 and Gasconade. Police say that 8 people were taken to the hospital with injuries. Some of them are in critical condition.

Police are working to determine the cause, but have re-opened one southbound lane of the interstate as they work to remove the wreckage. They are unsure if it was weather related. There is a significant backup on I-64, I-44, I-70 and I-55.

Check the latest traffic conditions here: