CNN Forensic Files March 14, 2014 08:09:00
A wooden trestle. the center section was totally destroyed. despite its design, the swing feature of the bridge was never used, and investigators discovered it wasn't connected properly. >> since they never did use it as a swing bridge, they never did put in the same amount of tie-downs at the ends of the bridge to hold it in place. >> divers also examined the wood pilings that supported the bridge. >> we wanted to determine if the piles had undergone any kind of deterioration, such as damage from wood-destroying organisms like soft rot or brown rot decay. >> under a powerful microscope, scien...