UPDATE: The southbound US-27 on ramp at Signal Mountain Blvd. has been re-opened to traffic following a crash that overturned a tractor trailer carrying concrete Monday morning.

Traffic may continue to be heavy in the area. Motorist should consider an alternate route if possible.

PREVIOUS STORY: Emergency crews are working the scene of an overturned tractor-trailer on US-27 at the Signal Mountain Rd. exit.

The southbound US-27 entrance ramp is closed. No word yet on when it will reopen.

Officials say the truck was full of concrete and had just picked up a fresh load, when it overturned.

Police say speed may have been a factor in the crash.

A number of tow trucks and emergency vehicles are on scene to move concrete and debris from the area.

The crash also knocked down a pole in the area, and EPB is working to restore downed power lines.

The driver is in the hospital, and the extent of the injuries are unknown at this time.

Channel 3 has a crew on scene.

Stay with Channel 3 Eyewitness News and WRCBtv.com for more on this developing story.