ST. LOUIS – A crash on the northbound I-55 ramp to westbound I-270 is causing delays Wednesday morning.

The crash happened at about 5:30 a.m. It is unknown at this time how many cars were involved. It is also unknown if anyone was injured.

FOX 2 will continue to update this story with more information as it becomes available.

Check the traffic map for the latest road conditions, accidents, and backups along your route. Download the FOX 2 News App for the latest updates and alerts while you travel.