A tractor trailer caught fire early Monday morning in Scott City. The fire occurred around 2.a.m. at the 83-83 mile marker. Police say, the truck was carrying house hold appliances. There were no injuries in the fire. The cause is still under investigation. Police say the highway was still shut down, but was reopened shortly before 6.a.m. Traffic was diverted off I-55 at mile marker 89 to Highway 61 in Scott City. Traffic had to change course at mile marker 89 to Highway 61 in Scott City.