neroden
Engineer
I doubt that; through running does eliminate a lot of the need for terminal tracks and layovers.The South Station expansion and restoration of some of the tracks that were lost in downsizing during the 20th century will have to be done, regardless of whether the NSRL is built.
Does that include the extra cost of the relocated railyard, or is that additional hundreds of millions? Oy.South Station had 28 tracks at one time, it is now down to 13. Checking the MBTA capital budget, there is $200 million allocated in the 5 year for the acquisition of the postal sort facility and clearing of the property. Then, it appears to be another $700 to $900 million (early estimate) to build the new expanded station with a mezzanine and boarding area over the tracks and platforms. Some of the cost will be recovered by new retail and maybe office space to lease.
Then repeat on the North side...
Cheap.A North/South Rail Link is probably several billion dollars,
This is probably the primary issue. The catenary should be put up over the MBTA lines *anyway*, regardless of whether NSRL is built, but if you throw that cost into the NSRL cost, then it looks very expensive.even leaving out a center city station which could be seriously expensive. Another factor is that the commuter lines are all diesel powered. If the Boston commuter lines were mostly or all electrified, I think a NSRL might have been built by now (like in Philly).
Nobody's proposed a diesel tunnel; the grades require electrification.But unless or until MA and the MBTA electrifies much of commuter rail system, either the NSRL has to have ventilation capable of dealing with diesel locomotives or the tunnel is electrified with 3rd rail or catenary and MBTA acquires a set of dual mode locomotives.
NRSL per se would probably be comparable price to the GLX, assuming that Central Station is omitted, South Station is dug cut-and-cover under the Fort Point Channel, and North Station is built cut-and-cover under the parking lot.We should not overlook the effects of the BIg Dig on MA and MBTA debt load and on the public. I think the Big Dig was a contributing factor to the public backlash that forced Boston's political leadership to drop the bid for the 2024 Olympic Games. it may be a generation before Bostonians are willing to listen to plans for really big new infrastructure projects, especially anything involving tunnels. Yes, the Green Line Extension is being built, but that is a circa $1.2 billion project, not a multi-billion dollar tunnel project.
But it doesn't make sense without the electrification of the system, so I suppose we have to wait until the MBTA starts taking electrification seriously. :sigh:
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