ST. CHARLES COUNTY, Mo. ( -- Freezing rain caused major traffic problems on major roadways on both sides of the river Friday, with fewer problems occurring on Saturday.

According to ISP, nearly every roadway in the Metro East was a "sheet of ice," at one point on Friday. Authorities are working accidents on every major interstate, including 64, 255, 270, 70, 55, and Route 15, with Route 15 being especially bad. ISP officials are working at least eight serious accidents, two of which are rollover crashes with serious injuries. Crews have at least 50 calls pending for more minor accidents.

A multi-vehicle accident at Interstate 44 and Lewis Road has reduced traffic flow in the westbound lanes to a single lane. According to Eureka Fire Department information officer Scott Barthelmass, only one injury was reported. Due to the road conditions and heavy traffic, Missouri Highway Patrol was unable to reach the scene of the crash.

Eureka originally sent three ambulances to the scene, and due to the road conditions and heavy traffic, had trouble redeploying them to the numerous calls they've received.

The accident caused two other crashes, one at 44 and 141, and another at 44 and 109. Neither accident is believed to have resulted in serious injuries.

There were also reports of accidents on Interstate 44 in the area of Sullivan, one of which is believed to be serious. Emergency crews responded to a four car pile up at the 227 mile marker, in which one of the cars rolled and one person was ejected. That person has serious injuries . Witnesses have reported multiple vehicles have slid off the roadway and authorities have received calls on multiple crashes.

Northbound I-55 at Imperial Main in Jefferson County was closed due to a fatal accident for several hours on Friday.

Two westbound lanes of Interstate 64 were shut down at Lake St. Louis Boulevard due to an accident, causing heavy delays. The scene was cleared around 5:00 p.m Friday.

Interstate 70 has seen significant backups as poor traction has caused multiple accidents from St. Charles County all the way to Columbia. In Foristell, both directions of 70 were at a complete stop Friday. The eastbound lanes at the W-T intersection were closed, and the westbound lanes were not moving. Eastbound traffic was being routed off the highway. In Callaway County, just east of Columbia, eastbound 70 was shut down for two hours because vehicles could not make it up a steep hill. The area reopened around 5:30 p.m.

According to the Lincoln County Sheriff's office, Highways 47, 79 and 61 were covered in ice. Lincoln County school buses were delayed until conditions improve. Rockwood School District, Francis Howell School District and Parkway School District also sae delays in bus service.

According to a trained spotter, ice is covering roads on Highway 21 past Highway 141 in the Fenton/Arnold/House Springs areas. Several accidents and steep grades on paved roads have made them almost impassable.

Slick driving conditions have caused multiple accidents in the area of Highway C and Highway 61. On Highway 50, the eastbound roadway was shut down near Union, Missouri Friday due to multiple accidents.

Read: Winter Weather Advisory through midnight Friday

Emergency crews were also on the scene of an overturned school bus at the intersection of Callaway Ridge Drive and Highway F in St. Charles County.

According to authorities, the driver was the only person on board and did not suffer any injuries.

Warren County authorities have also worked several accidents. At least one semi truck was overturned on southbound Highway 47.

In downtown St. Louis, a Madison County Transit bus could not make a turn from 8th Street onto Market Street without the help of a salt truck that also had trouble with the ice.

On Saturday, the driver of an SUV was killed on I-255 in Pontoon Beach when her car slid into the median and then hit a pick-up truck head-on. However, there were fewer traffic problems on Saturday than Friday.

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