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

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

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: