Birmingham, AL – State transportation officials say work is scheduled to start soon on another Birmingham overpass. An 18-wheeler damaged Interstate 20/59 at the Red Mountain Expressway Tuesday. The accident happened when the truck's load shifted, and a huge steel coil fell off the rig. Officials say the 45,000 pound coil did cause minor damage to the overpass. DOT workers have placed a temporary patch on the damaged road until permanent repairs can be made. The Birmingham area has had its share of problems with steel coils. There have been two similar incidents in the past few months. An 18-wheeler lost its cargo in December. It was carrying an industrial drive shaft that tore two holes in I-65. Also, a tanker-truck exploded in October and destroyed the I-20/59 bridge to I-65 in downtown Birmingham.