The driver injured in a head-on collision with a tractor trailer Tuesday in north Forsyth remained hospitalized Thursday, authorities said.

Forsyth County Sheriff’s Cpl. David Garrison said Katelyn Koehler remains in stable condition at Grady Memorial Hospital in Atlanta, where she was being treated for leg fractures.

The 18-year-old was driving a Nissan Altima on Hwy. 369 near Gravitt Road when the wreck occurred about 11 a.m. Tuesday.

“Preliminary investigation shows she had crossed over the center line,” Garrison said. “She landed on the roof after [the vehicle] went down the embankment.”

Forsyth County Fire officials have said the effort required extra caution as one of the Koehler’s legs was pinned between two of the roof pillars of the Nissan.

The driver of the tractor trailer, Raul Castruita, was treated for minor injuries and released from Northside Hospital- Forsyth, Garrison said. Both drivers were wearing seat belts.

The wreck, which occurred just west of North Forsyth Middle and High schools, as well as Coal Mountain Elementary, shut down traffic for hours in both directions along the busy corridor.

As of Thursday, no charges had been filed. Garrison said the investigation into the wreck was continuing.