As the wintry mix began to pepper the Tennessee Valley Wednesday morning, roads became slippery and caused headaches for drivers.

READ MORE | Road Closures in the Chattanooga area 

Icy spots on roadways have created serious hazards for drivers. Nearly 20 vehicles are involved in crashes on I-75 southbound in Georgia near the Cloud Springs Road. Drivers should avoid the area if possible.

Both northbound and southbound  lanes of I-75 near Ooltewah were shut down due to a crash, but has been re-opened. Drivers should expect some congestion until normal traffic patterns return.

Debris from a truck is scattered over the roadway.

Drivers are being re-routed off I-75 at Exit 11, around the interchange and then back onto the interstate at the same exit.

Get the WRCB Traffic app for the latest road and traffic conditions. Chattanooga Police says you can text "ALERT" to  97779 for the latest on road conditions.

Chattanooga road closure map: 

Chattanooga Public Works map:

Driver Safety:

"At this time, our Traffic Unit is requesting that individuals refrain from traveling unless it is completely necessary to do so," said a spokesperson for the Chattanooga Police Department. "Please, stay home. If you really don’t have to go out, don’t. Even if you can drive well in the snow, not everyone else can. If you don’t have somewhere to be, watch the weather from indoors."

Safety Tips (from Chattanooga Police Department): 

- Accelerate and decelerate slowly. 

- Applying the gas slowly to accelerate is the best method for regaining traction and avoiding skids. 

- Don’t try to get moving in a hurry. And take time to slow down for a stoplight. 

- The normal dry pavement following distance of three to four seconds should be increased to eight to ten seconds. This increased margin of safety will provide the longer distance needed if you have to stop.

- Drive slowly. Everything takes longer on snow/ice covered roads. Accelerating, stopping, turning – nothing happens as quickly as on dry pavement. Give yourself time to maneuver by driving slowly.