Update: All lanes of U.S. 311 North have re-opened.
WINSTON-SALEM, N.C. — Both lanes of U.S. 311 North near Interstate 40 West in Winston-Salem are closed due to a wreck.
The Winston-Salem Police Department is conducting a crash investigation involving an overturned tractor-trailer.
Crews are on the scene working to clear the roadway but traffic may be diverted for several hours.
The North Carolina Department of Transportation is helping re-route traffic from U.S. 311 onto I-40 East.
Drivers are encouraged to use alternate routes until around 7 a.m.