Rollover crash on I-85 causing major back-up

UNDATED - Mid-morning commuters in North Gwinnett County are having trouble negotiating Interstate 85.

A rollover crash on I-85 southbound between I-985 and Lawrenceville-Suwanee Road has three right lanes of the interstate blocked. Traffic is backed up for over 4 miles on I-85 beyond Highway 20. In addition, there are delays on I-985 southbound because of the accident.

No word yet on the extent of injuries in the crash.