F-Line to Dudley
Senior Member
- Joined
- Nov 2, 2010
- Messages
- 9,196
- Reaction score
- 9,002
Wow, that really is the center span.
Can we order another one STAT?
It'd be a little more robust than that one. You can see the wartime steel shortage at work in that pic with how thin the beams look. Structurally fine until you get to the point in the bridge's lifespan where natural steel loss accelerated by the saltwater takes too much of a toll for even proper maintenance (which this one obviously didn't have) can't stretch it too much longer. Same general reasoning behind the Tappan Zee Bridge needing an ASAP replacement. In pretty much all non-wartime rationing eras the beams will be extremely overbuilt to the point where they can rust away a huge percentage of their steel and still be 100% fine for the loads. 75-100 year lifespans (and sometimes longer) under proper maintenance.
This one--and most of them constructed during times of materials shortages--was never intended to last more than 50-year rating. That was the compromise they had to make during materials shortages. If the original builders knew what age and level of decay this one was ultimately pushed to they'd probably tell future-MassDOT "Are you @#$% nuts?!?!?"