UPDATE (6 p.m.):

Virginia State Police have provided new information about an accident involving a tractor trailer that led to twelve miles of delays along the northbound lanes of Interstate 81 near Mount Crawford.

According to Sgt. Tyler, the accident involved three vehicles.

A 2002 Freightliner tractor trailer was driving north in the right lane, and struck a 2004 Toyota SUV and a 2014 Ford SUV when it went to change lanes.

The driver of the tractor trailer was Christian Muhindo, a 25-year-old Harrisonburg man who was student driving at the time.

He has been charged with reckless driving.

The driver of the Toyota was taken to Sentara RMH for treatment, as was Muhindo.

The driver of the Ford and the instructor in the tractor trailer were both unharmed.

Harrisonburg Fire and Rescue, as well as Rockingham County Fire and Rescue, responded to the scene, which closed the left lane of I-81 for a substantial amount of time.

Virginia State Police continue to investigate the crash.

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UPDATE (2 p.m.):

All lanes are reopen on Interstate 81 after a tractor trailer accident at mile marker 239 temporarily left one lane closed for nearly two hours, leading to delays of up to 12 miles, stretching from Weyers Cave to Verona.

It took some time for the delays to clear once lanes were reopen.

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Drivers heading north on Interstate 81 through Rockingham County should be prepared for significant delays in the Mount Crawford area and well before.

According to VDOT, a tractor trailer accident at mile marker 239 closed the left lane and left shoulder on the northbound side, as well as the south left shoulder, for nearly two hours.

Callers from the scene reported an accident involving a tractor trailer and multiple vehicles which occurred around 11 a.m.

As of 1 p.m., however, all lanes were reopen in the area.

Backups extended at least twelve miles just before the lanes were opened back up.

That means traffic is backed up past Exit 235 in Weyers Cave, beyond the next closest exit at MM 227 in Verona, and the closest exit before the backup would be any of the Staunton exits.

Route 11, from Staunton to Harrisonburg, is also heavily congested due to the amount of drivers who have left the interstate to avoid the traffic.

You can find up-to-date travel times and maps for I-81

.