A deadly tragedy on a freeway in Oklahoma sends one of the state's busiest bridges collapsing into the Arkansas river below; expert engineers investigate how a tugboat striking a reinforced concrete pier could cause such a catastrophic disaster.
Ronan Summers, Jason Dietz
Stream Engineering Catastrophes Season 04 Episode 07 in stunning HD on 123Movies, completely free. No account, no downloads — just instant access with English subtitles.