Semi jackknives on I-55 in Bolingbrook; all lanes reopen

BOLINGBROOK, Ill. (WLS) -- A jackknifed semi caused some major delays on I-55 in the south suburbs on Wednesday.

ABC7 Chicago is now streaming 24/7. Click here to watch

The crash happened at about 3:37 a.m. on the northbound lanes of I-55 approaching I-335, according to Illinois State Police.

Due to the crash, two northbound lanes were blocked and caused major delays.

The semi also pushed guardrail onto southbound I-55 in the crash, causing the left lane to be closed.

It is unknown if there were any serious injuries.

by 6:45 a.m. all lanes were reopened.

CHICAGO TRAFFIC | See LIVE drive times