[concretebob]

I don't think the total load at time of failure is being calculated.
IIRC that bridge was undergoing repair at the time of collapse, with live traffic loads.
The combination of static and dynamic loading is what caused this bridge to fail when it did.
Had no repairs been underway, I think this bridge would still be standing.
If traffic had been re-routed during repairs, I think the bridge would still be standing.

[Lonesome in Massachussets]

Agree, that wasn’t the issue I was addressing...

The bridge failed because it was loaded far beyond its original design specification and no one bothered to check when they started repairing it.

Clearly, Bush’s fault.