ROCK ISLAND — The trailer of a semi-truck collapsed yesterday as the driver was approaching the train tracks near the Quad City Industrial Center building. Illinois State Police said the truck was hauling freight and the frame rails underneath the trailer probably cracked.  The owner of the trucking company said an inspection revealed that one of the shipments on the trailer was tendered with significantly inaccurate information.  This shipment was tendered at 6,325 pounds, but upon reweigh, the shipment actually weighed 13,644 pounds. The weight difference of 7,339 pounds caused the trailer to be loaded beyond the manufacturer’s recommended limits, and as a result, during normal road movement, the trailer lost its structural integrity and collapsed.