Once it was one of the longest road bridges in the world. Now it has to come down. Over a thousand meters long, it holds 22.000 tons of steel and concrete. Neighbouring bridges rule out traditional demolition. Instead, engineers will attempt an ambitious and untested technique. Their plan to take down the massice steel spans in one piece and tow them away. It will be an extreme engineering challenge and it will put the technology and the workers to the limit. Demolition of the (1927) Carquinez Bridge - San Francisco Bay Area