>>3104427

If you don't think that a gas fire (heat) can collapse a large, really strong, concrete and steel structure, like an interstate highway bridge or overpass, here are a couple of articles (examples), with pictures, that you should find very enlightening.

Comparisons between 9-11 and the Fuel Truck that Hit a Bridge in SF

http://www.brainfuel.tv/comparisons-between-9-11-and-the-fuel-truck-that-hit-a-bridge-in-sf

Atlanta bridge collapse shows how fire defeats concrete, steel

https://www.usatoday.com/story/news/2017/03/31/atlanta-bridge-collapse-shows-how-fire-defeats-concrete-steel/99877148/