by MEC407
NHV 669 wrote: ↑Wed Sep 11, 2024 8:22 am An uninformed assumption that was made without even bothering to crunch numbers. The difference between a P42 and a B23-7 is roughly 5 tons, and a single loaded freight car would more than make up that difference. So a moot point.I wouldn't necessarily say it's a moot point. The difference is the speed. When railroad bridges have issues, they receive speed restrictions. Walking a B23 or P42 over a bridge at 5 MPH creates less dynamic stress and less movement of bridge members than running over the bridge at MAS. When the deficiencies in these bridges were discovered, speed restrictions were put in place. Amtrak, understandably, didn't want to operate a service that required them to slow down to 5 MPH for multiple bridges. Operating like that is fine when you're a freight operator or even an excursion operator (you can sell it to tourists as "we're slowing down so you can get a better view of the water"), but it's not what Amtrak and NNEPRA have in mind for a service that they want to be time-competitive with driving.
There was necessary bridge work, but as noted above, either already done, or at least under contract/under bid.
MEC407
Moderator:
Pan Am Railways — Boston & Maine/Maine Central — Delaware & Hudson
Central Maine & Quebec/Montreal, Maine & Atlantic/Bangor & Aroostook
Providence & Worcester — New England — GE Locomotives
Moderator:
Pan Am Railways — Boston & Maine/Maine Central — Delaware & Hudson
Central Maine & Quebec/Montreal, Maine & Atlantic/Bangor & Aroostook
Providence & Worcester — New England — GE Locomotives