Editor’s note: ISP earlier said two semis were involved. We have since learned only one semi was involved.

INDIANAPOLIS — An overturned semi has made a big impact on travel on the west side of Indianapolis early Thursday morning.

Just before 4 a.m., a semi overturned on southbound I-465 at W. Washington Street. The semi was hauling a trailer carrying paints.

The crash caused the semi to leak diesel fuel.

At least one other vehicle, a passenger car, was involved.

Although all lanes are open as of 11 a.m., traffic is still severely backed up.

Indiana State Police confirmed two people were taken to the hospital, but the extent of their injuries is unknown.

Anyone planning to go the Indianapolis airport should plan a different route.