CARTER COUNTY, Okla. -- If you were stuck in traffic on northbound Interstate 35 on Tuesday afternoon, here's why:

The trailer of a Hirschbach Motor Lines 18-wheeler caught fire around 2:30 p.m. The freeway was shut down for a short time. One lane was reopened after firefighters brought the blaze under control.

Authorities said there was nothing dangerous burning inside the trailer, and nobody was hurt.