There is a major difference in the bridge collapse and the WTC.
Jet fuel burns much lower than natural gas and other types of fuel. Jet fuel burns at about 500 to 600F. Natural gas, etc. burns at app. 3,000F or
so.
The jet fuel wouldn't have been hot enough to melt the towers, but it wasn't jet fuel that was on the bridge collapse, it was regular fuel and could
burn at 3,000F to 3,500 F, hot enough to melt the concrete, which also collapses at those temperatures.
Also, if it had really melted, it would be glass, but it wasn't.
en.wikipedia.org...:Jet_fuel
"After jet fuel is ignited, what temperature does it burn at in standard conditions? It states right here in wikipedia that in open air jetA burns at
500 to 599 degrees F. I am a diesel mechanic and a welder/fabricator, and have first hand experience with most of the factors that are said to have
caused the collapse of the twin towers. Being a fabricator and knowing how hot I have to get steel to get it to weaken and bend, I can tell you with
certainty that if wikipedia's figures are correct, 600 degrees F is not hot enough to weaken steel, especially the massive steel used in the twin
towers."
IMPORTANT: This section of the road was the part that was not reinforced after the Loma Prieta earthquake, meaning it was already in a weakened state.
