Drivers traveling into other parts of Missouri and Illinois can get information about road conditions from both state's transportation departments.
Missouri drivers can find updated road conditions at the MoDOT website.
Illinois drivers should check the Getting Around Illinois website.
Interstates in the immediate St. Louis area were still partially snow-covered at 3:00 a.m. Monday, but continue to improve.
St. Louis County and St. Louis City street crews pre-treated the roads Thursday evening in an effort to prevent any morning rush hour surprises. But both MoDOT and IDOT officials decided to wait and monitor. Both transportation departments say they'll adjust as conditions warrant.
At midnight, road temperature sensors were showing the interstates all above freezing. But drivers are being cautioned to use extra care on elevated roadways, ramps and bridges.
Several accident forced Illinois officials to close the eastbound span of the Jefferson Barracks Wednesday evening. Several cars had slid into the guard rail.
Missouri State troopers closed a portion of Highway 21 in Jefferson County after slick roads caused a multi-vehicle accident along 21 near Schenk Road.
Also, Highway 61 was closed at Wilson Road, about 10 miles north Troy, Missouri after several vehicles slid off the road, some overturning.
The National Weather Services issued a special weather statement Wednesday evening advising drivers to use extra caution, especially on bridges and untreated roadways.
That major winter storm is threatening to bring blizzard conditions to the north and central portion of Missouri--hitting Kansas City hard and in other parts of the central Plains today.
Kansas City leaders are telling people to move their cars off the street or they'll be towed. This snow plow driver says cars parked haphazardly have made it been difficult to clear the streets. "It's not that we haven't tried or haven't been there. Just a lot of times we get there and we can't get through."
Kansas City - which got a foot of snow last week - could get another 15 inches staring Monday afternoon Jesse Bustamonte was out with a shovel clearing a storm drain in front of his house Sunday. "I had to dig out a friend of mine. Every time he tried to move he was spinning his wheels because of the ice. So it was dig out and move, dig out and move."
The National Weather Service in Dodge City, Kan. says there could be "upward of a foot across south-central Kansas with lesser amounts across west-central and central Kansas." The storm also could bring tornadoes to the South.