UPDATE as of 7:21 p.m. :
The driver was rescued and taken to a hospital with serious injuries, according to East Pierce Fire & Rescue.
The man tried to turn his car around by the bridge about 1 p.m., when the vehicle went over the embankment, East Pierce officials said.
He tried to climb out, lost his footing, and fell about 100 to 150 feet into the ravine, toward the Carbon River.
A pair of off-duty officers called 911 after they saw the car about 4 p.m. and heard the man yelling for help.
The Washington State Patrol is investigating what caused the crash.
INITIAL POST: About 20 rescuers are trying to reach the driver of car that went over an embankment near the Fairfax Bridge on State Route 165, about 10 miles south of Buckley, according to East Pierce Fire & Rescue.
The driver tried to climb out, but fell to the bottom of the ravine, according to East Pierce officials. Witnesses reported the car about 30 feet down at 4:20 p.m.
The East Pierce Technical Rescue Team, members of the Carbonado Fire Department and Pierce County Technical Rescue Response are on the scene.
A helicopter is ready to airlift the patient to the hospital when the rescue is complete.
The southbound lane of SR 165 is closed near the bridge, according to the Washington Department of Transportation.
This is a developing story. Check back for updates.