Update 8:30 p.m.: The crash is officially cleared and I-80 westbound is reopened.

I-80 westbound re-opened in Centre County. #511PA

— 511PA StateCollege (@511PAStateColl) October 21, 2017

CLEARED: Multi vehicle crash on I-80 westbound between Exit 173 – PA 64 and Exit 161 – US 220 South/PA 26.

— 511PA StateCollege (@511PAStateColl) October 20, 2017

Original story: Part of Interstate 80 westbound between Clinton and Centre counties is closed Friday afternoon after a multi-vehicle crash.

The Pennsylvania Department of Transportation reported I-80 west is closed between Exit 173 at Lamar and Exit 161 at Bellefonte. The section is expected to remain closed into the nighttime hours on Friday.

I-80 westbound closed from 173 exit to 161 exit due to a crash. Closure will go into nighttime hours.Backlog is substantial.#511PA

— 511PA StateCollege (@511PAStateColl) October 20, 2017

UPDATE: Multi vehicle crash on I-80 westbound between Exit 173 – PA 64 and Exit 161 – US 220 South/PA 26. All lanes closed.

— 511PA StateCollege (@511PAStateColl) October 20, 2017

https://twitter.com/blerms/status/921470157616242688

At the 1-hr mark stuck here on Rt 80. Beautiful evening in Central Pa. Game tomorrow. We’re gonna be fine. CC @OnwardState @StateCollegecom pic.twitter.com/74UxQv63z9

— Dave Cole (@DaveColePhoto) October 20, 2017

The traffic backlog from the crash, which occurred around 3:30 p.m., is “substantial,” according to PennDOT, and drivers should remain alert for slow and stopped traffic.

The traffic will likely affect thousands of people who are traveling to State College tonight for Saturday’s White Out matchup against Michigan. Fans traveling into State College should take Exit 173 in Lamar.

WJAC-TV reported that the crash occurred near mile marker 161.4 in Marion Township and involved at least two tractor-trailers.

This story will be updated as the situation develops.