(WEAU) -- Traffic was backedup for six miles on I-94 Saturday after a semi caught fire when it hit and damaged a barrier wall in a construction zone.
It happened just before 10 a.m. in St. Croix County near Roberts.
Troopers say the semi caught fire, sending smoke over the roadway.
Fire crews put out the flames.
Troopers say traffic was rerouted headed westbound for about four hours during the barrier repair.
No one was hurt.