UPDATE: The W Road is now open.
Fifteen people were transported to area hospitals with non-life-threatening injuries, and 14 others were transported by bus from the scene to a reunification location with family.
ORIGINAL STORY: Icy weather conditions made roads slick for commuters across the Chattanooga region this morning.
A 35-car pile-up on Interstate 75 in Catoosa County closed the roadway in both directions south of Ringgold early this morning. The interstate reopened just before 11 a.m. Georgia State Patrol said there were no injuries.
The Hamilton County Sheriff's Office also reported several minor wrecks across the county related to ice.
The W Road and Roberts Mill Road have been closed, and drivers in those areas should take an alternate route and drivers elsewhere should allow extra time to reach their destinations.
If at all possible, wait until temperatures warm before traveling, local officials said.
Southern Adventist University classes will be delayed opening until noon.
Georgia Northwestern Technical College has closed all campuses today and tonight due to icing in some of the counties and outlying areas. They plan to open as usual on Tuesday.
Meanwhile, problems still persist on Taft Highway/U.S. Highway 127 in Sequatchie County.
Sequatchie County Sheriff Ronnie Hitchcock says State Route 111 was icy earlier but now is becoming more passable.
Hitchcock said where he was on Cagle Mountain on the west side of the Sequatchie Valley the temperature was 33.
"At one point next to Grandview subdivision, there were six or seven cars into the guardrail and the ditches," Hitchcock said. "They're getting it cleared up."
TDOT's Smartway map also shows an incident on Taft Highway/U.S. Highway 127 near Clear Brooks Drive on the Sequatchie County side of Walden's Ridge that has closed the northbound lane.
GDOT is reporting icy conditions near Wells Road in Dade County and in the Canyon Ridge Road area of Walker County.
Temperatures are expected to warm up later this morning with freezing rain turning to rain by noon and a high of 40 later this afternoon, according to WRCB.
Elsewhere in the South, a deadly, four-vehicle crash closed all northbound lanes of Interstate 75 in Clayton County, according to the Associated Press.
And in Alabama, the DeKalb County Emergency Management Agency reported that roads throughout the mountainous county were impassable because of slippery conditions.
The Associated Press contributed to this report.