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Old 11-22-2017, 01:47 PM   #2781
datadyne007
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Re: Green Line Extension to Medford & Union Sq

Also, I finally reviewed/familiarized myself with the Phase II plans to Rt 16/MVP. I didn't realize just how close the Phase I contract ends to the proposed station. It's crazy not to just build it all at once. Hopefully the newfound $200m can be applied to this to get it all done together.

http://greenlineextension.org/docume...esentation.pdf


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Old 11-22-2017, 03:21 PM   #2782
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Re: Green Line Extension to Medford & Union Sq

^ You are seeing that it was a political phasing, not an engineering or project thing--just simply that Tufts and ward politics could drag the GLX as far as College Ave but that slightly-less-dense neighborhoods beyond were transit-sceptical (2007 - 2012 ish) and the solution was to put MVP in Phase II rather than either side force a build/no-build and risk losing a fight.

Maybe credit the switch from a disused Wild Oats to a busy Whole Foods and Complete Streets in West Medford--but the station catchment demographics are now ready to build and it would be sweet to see it before 2025.
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Old 11-28-2017, 05:52 PM   #2783
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Re: West Medford Station, etc

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I'm also convinced that the Green Line was never getting across the Mystic: The bridge work on the two spans (over the parkway and over the Mystic) was going to be too expensive.

If West Medford is ever going to get frequent transit, the money will be better spent on whatever it takes to put a 3-track tunnel under Route 60 for two side "NSRL" platforms and a center freight-clearance and express track. I don't see how you'd ever squeeze that and a two track GLX into West Medford Square.
If you start at the east edge of Mystic Valley Parkway and continue past the west edge of the Mystic River, it's less than 400' long, times two tracks of width.

If you're proposing to dig out two 800' platforms plus at least 800' for a center track, when tunnels are typically more expensive than bridges, I don't see how it would be at all likely that converting West Medford to surface Green Line with commuter rail / Amtrak / freight in a platformless two track tunnel would come out more expensive than your three track tunnel with depressed platforms. (I'm assuming this would mean that West Medford Station would no longer be a commuter rail stop with the Green Line stop there providing the replacement service.)

There's also the question of how many commuter trains per hour plus Amtrak trains per hour can be run between the Charles River and Woburn if we want every Acela serving Anderson Regional Transportation Center in the NSRL future, and having commuter rail stops without quad tracking gets to be challenging in that regard; if we could provide the local service with the Green Line extended out to Winchester and run the commuter trains express, they'd mix in better with Amtrak service.

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And if there's going to be a NSRL-to-GLX transfer station somewhere, it seems like Tufts or Gilman or Washington St are better places.
Beyond that, for at least the useful life of the MVP station (til, what, 2065?) there are going to be more-deserving, more-receptive places to run a green line branch to places not slated for NSRL service, like beyond Riverside, or on the Urban Ring to Chelsea.
The key thing to think about for that commuter rail infill station is where to put it to best offer bus connections to Harvard, Kendall, etc. I suspect along the current 86 bus route may turn out to be best.
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Old 12-03-2017, 03:43 PM   #2784
Joel N. Weber II
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Re: Green Line Extension to Medford & Union Sq

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It should be the case, yes. Return the money for Phase II, or put it toward Red/Blue or Fairmount Urban Rail.
I'm wondering whether Orange Line to Roslindale Village would have better return on investment than Green Line to Mystic Valley Parkway.
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Old 12-03-2017, 06:04 PM   #2785
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Re: Green Line Extension to Medford & Union Sq

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I'm wondering whether Orange Line to Roslindale Village would have better return on investment than Green Line to Mystic Valley Parkway.
Well, this has been extensively discussed and their isn’t agreement among our would-be transit engineers as to how feasible that actually would be. The better move would be replacing the entire Needham Line with Orange and Green, and probably leaving out Hershey altogether.
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Old 12-14-2017, 04:25 PM   #2786
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Re: Green Line Extension to Mystic Valley Parkway vs Needham and West Roxbury

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The better move would be replacing the entire Needham Line with Orange and Green, and probably leaving out Hershey altogether.
I'd certainly be happy to see all of that built more or less as one large project (although the ideal way to phase construction would probably be to convert the Needham part first, then the Orange Line part if you're trying to minimize the time stations lose rail service; and the Green Line bridge across the Charles can be built before the active segments are touched, and the vertical catenary poles can probably also be installed while the commuter rail is still running), but if we're talking about the best thing to do with the dollars currently earmarked for the Mystic Valley Parkway Green Line extension, those dollars probably aren't going to pay for all of Green to Needham plus Orange to West Roxbury.

Then with Needham there's also the question of whether more riders and branches west of Copley is going to strain the system, in a way that a one stop extension on what will become an existing branch of the underutilized Lechmere side of the system won't be a similar strain.

We also need more Orange Line rolling stock before we can do this (and maybe more Green Line trains too), but the Orange Line trains should get delivered long before anyone is likely to get the environmental study of the Orange Line extension done.
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Old 12-19-2017, 08:37 AM   #2787
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Re: Green Line Extension to Medford & Union Sq

I could have sworn we had a dedicated Green Line vehicles thread. Oh well...

https://d3044s2alrsxog.cloudfront.ne...light-rail.pdf

IFFP presentation for Light Rail (GL and MHSL). Mostly no news, since they're punting the big decisions to the ongoing visioning studies for both lines. Type 9 deliveries in 2018 - Type 10 discussion begins once the vision study is done and the Type 9s have been running for a while. The one note on Type 10 is that they want capacity to increase over the current fleet, and it's implied that the Type 10 fleet would replace both Type 7 and Type 8.

Mattapan PCCs are being overhauled to last past 2020. All the rest of the news is left to the line-specific study in January.
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Old 12-19-2017, 09:56 AM   #2788
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Re: Green Line Extension to Medford & Union Sq

Of note, the first GLX “community working group” is today at 10:30am. Hopefully the agenda is posted online because that’s the least convenient time possible.
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Old 12-19-2017, 01:28 PM   #2789
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Re: Green Line Extension to Medford & Union Sq

A little bit of self-promotion: my masters thesis (done with the MIT Transit Lab under contract to the MBTA) included an analysis of Type 10 options and the infrastructure changes needed to support them.
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Old 12-19-2017, 01:34 PM   #2790
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Re: Green Line Extension to Medford & Union Sq

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Mattapan PCCs are being overhauled to last past 2020. All the rest of the news is left to the line-specific study in January.
I would think you mean 2030?
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Old 12-20-2017, 12:25 AM   #2791
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Re: Green Line Extension to Medford & Union Sq

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A little bit of self-promotion: my masters thesis (done with the MIT Transit Lab under contract to the MBTA) included an analysis of Type 10 options and the infrastructure changes needed to support them.
Nice work, although unless I am missing something or misinterpreting what you wrote, the Siemens S70 is not a 100% low-floor car:

http://www.modernstreetcar.org/pdf/S...11%20photo.pdf

(Note steps in the interior leading up to the section above the motor trucks):
http://www.modernstreetcar.org/image...tcar_10_sm.jpg

Of course, the announced merger of Siemens and Alstom since you wrote your thesis will probably result in one of their two "standard product" lines being merged or dropped by the time the Type 10 is ordered, so it might not be an option by then anyway. And I would also guess there is a good chance Bombardier will be merged into another builder by the time the Type 10 is ordered.
And despite not having any standard light rail product line at the moment, I'm sure CRRC will bid on any future MBTA order for any type of rail vehicle.
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Old 12-20-2017, 08:08 AM   #2792
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Re: Green Line Extension to Medford & Union Sq

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I would think you mean 2030?
Nope, 2020. See slide 13.
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Old 12-21-2017, 11:43 AM   #2793
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Re: Green Line Extension to Medford & Union Sq

Notice To Proceed issued! We're in the construction phase!
https://www.mbta.com/news/3239
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Old 12-22-2017, 11:26 PM   #2794
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Re: Green Line Extension to Medford & Union Sq

I saw today that the Feds released the first $100 million of their $996 million grant for construction.

https://www.transit.dot.gov/about/ne...sachusetts-bay
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