Multi-car chain reaction wreck ties up traffic on I-85.

A wreck involving several cars backed up traffic for miles on Interstate 85 southbound Monday morning in Spartanburg County.

The wreck happened near the 62 mile marker, which is near the Highway 290 exit, at 6:25 a.m.

Troopers said a vehicle headed southbound hit the brakes due to traffic on the interstate.

That car was rear-ended which caused a chain reaction that ended up involving 11 cars, troopers said.