PennDOT says all westbound lanes of Interstate 80 in eastern Mercer County and western Venango County are closed because of a tractor trailer fire.

The road was shut down shortly after 5:30 am when several fire departments were called to put out the fire.

Westbound I-80 is closed between Exit 35 (PA 308 Clintonville) and exit 24 (PA 173 Grove City - Sandy Lake)

It is not known when the highway will open again.