Tractor trailer accident holds up traffic for several miles on I-81 North in Roanoke County

UPDATE (5:40 p.m.) — Traffic delays have extended to six miles, according to VDOT.

Update: Accident: NB on I-81 at MM147 in Roanoke Co. 1 NB travel lane closed. Delay 6 mi.5:36PM
— 511 Southwest VA (@511southwestva) January 12, 2020

ROANOKE COUNTY, Va. (WFXR) — Northbound motorists are delayed for miles along I-81 on Sunday evening due to a tractor-trailer accident at mile marker 147.

Update: Accident: NB on I-81 at MM147 in Roanoke Co. 1 NB travel lane closed. Delay 4 mi.4:50PM
— 511 Southwest VA (@511southwestva) January 12, 2020

The Virginia Department of Transportation says that the left shoulder and left travel lane are closed in the northbound direction, which has backed up traffic for four miles.