(KMOV) -- Several wrecks involving more than a dozen vehicles caused delays on three major St. Louis-area interstates Tuesday morning.
In south St. Louis County, southbound I-55 was shut down after at least six vehicles crashed on the Meramec River Bridge. Emergency crews removed one person from their vehicle and transported them to the hospital.
Traffic on SB I-55 was backed up for nearly three miles and drivers were being urged to use an alternate route. Emergency vehicles were also blocking two northbound lanes, causing more traffic for drivers heading towards downtown St. Louis.
The scene was completely cleared by 9 a.m.
Interstate 270 northbound was also shut down at I-55 due to another multi-vehicle wreck. Drivers were being diverted onto Lindbergh Blvd. All of those lanes were back open later in the morning.
A total of at least five vehicles were involved in two separate wrecks on Interstate 44 in west St. Louis County.
The Missouri Department of Transportation says the first accident happened on eastbound I-44 just before Highway 141.
Another wreck happened on I-44 as a result of the first one, causing traffic to back up past Antire Rd. All lanes were back open by about 7:45 a.m.
Officials say a third accident happened in the area on northbound Highway 141 just before Elam Rd. All northbound lanes were closed in the area at one point, but have since reopened.
Authorities say some of the wrecks that happened on overpasses were caused by cold air from the Meramec River refreezing some of the roads.