Asphalt made from crude oil byproducts…normally doesn’t burn because it is part of ground and doesn’t get oxygen Source, but a bridge would give ample oxygen from underneath to asphalt such that it could well weaken and burn.
Just woke up, did we get a cool parade yet?
You can see the undergirding gave way and observe the smoking cracks as well.
Only a Frog could say something like that and demand to be understood