Signal Mountain Boulevard is reopened as crews finished paving the road early Saturday afternoon, officials said.
"The contractors got finished early," said Jennifer Flynn, a TDOT spokeswoman. "We are very pleased this roadway is back open."
The Wright Brothers completed emergency repair project on Signal Mountain around 2:15 on Saturday, Ms. Flynn said.
The Tennessee Department of Transportation closed the road Friday night and had scheduled to keep U.S. Highway 27 closed until Monday at 6 a.m. to give worker enough time to finish repairing the washed-out road. But crews finished early.
"We are thrilled," said Signal Mountain mayor Bill Lusk.
Traffic will run on a temporary surface until TDOT maintenance crews can put down a permanent surface, including pavement markings, Ms. Flynn said. The maintenance crews plan to close the road to complete work on Monday after the peak hours of traffic in the morning, she said.
"They've just done a wonderful job trying to keep the inconvenience to a minimum," Mr. Lusk said.
The Signal Mountain rock slide that caused the large crater in the road was the second of three rock slides in the area in the past month.
The first slide, on Nov. 10 along U.S. Highway 64 in Polk County, will take two months to clear, records show. The third, and most minor slide, was on Dec. 11 when two large boulders slid off Lookout Mountain and landed in the ditch on Scenic Highway.