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Transit and Infrastructure All things T or civilly engineered within Boston Metro. |
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#1441 |
Senior Member
Join Date: Oct 2009
Posts: 1,752
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Re: Regional Rail (including North-South Rail Link)
...and there are a lot of grade crossings in Needham that blue cant do, plus a lot of the stations rely on pedestrian track crossing.
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#1442 | |
Senior Member
Join Date: Jan 2013
Location: Davis/Ball Sq.
Posts: 1,733
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Re: Regional Rail (including North-South Rail Link)
Quote:
I think the improvements planned for the Green Line - Type 10's, stop consolidation, signal priority, etc - will greatly improve service for all Green Lines and will hit the D-Line first. I suspect the reason Blue-eats-D never never happened in the past is because it isn't that impactful. |
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#1443 |
Senior Member
Join Date: Feb 2017
Posts: 131
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Re: Regional Rail (including North-South Rail Link)
I don't really get the point of Blue to Riverside. You'd need to spend at least $1 billion and shut down the entire branch for months (more likely years), and in exchange you get all door boarding, 60 mph top speed, and higher capacity. All door boarding is already coming, Type 10s will already be bringing back 50mph speeds, and the corridor doesn't demand that much capacity. Really the only argument I could see for this would be to open up capacity in the GL tunnel for a A-branch to Harvard, but tunneling the BL though Lower Alston seems like a more compelling option if this is the goal.
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#1444 |
Senior Member
Join Date: Nov 2010
Posts: 4,663
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Re: Regional Rail (including North-South Rail Link)
Blue-west has zilch to do with RER or NSRL. There's only one scenario where it would ever go on the table: if there was agreement to tear down Storrow Dr., and if that agreement came with ironclad commitment to a transit trade-in in the same project area. That means it's off-limits without Storrow, and anything west of Kenmore is out-of-scope.
It's SEVERAL degrees of difference apart to be talking Lynn-Riverside. The other demerits listed here are legit. Can't do Needham Branch without LRT because the grade crossing eliminations are blowout-cost for little benefit on HRT and Blue wouldn't fare well under branching. And you need the D to Brookline Village for the Urban Ring. And the ridership characteristics for the D are wretched for load-balancing w/Eastie-Revere dwells, making headway management overly brittle. But mainly, you simply can't consider it at all until Storrow's got a mandate and the Kenmore extension is built. Is...four?...wholly theoretical steps from now relevant discussion today? What about Step 1 to Charles as first use of energy? |
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#1445 |
Senior Member
Join Date: Oct 2009
Posts: 1,752
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Re: Regional Rail (including North-South Rail Link)
...plus where the Blue actually wants to go is Watertown Sq...
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#1446 |
Senior Member
Join Date: Dec 2011
Location: West Medford, MA
Posts: 3,499
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Re: Regional Rail (including North-South Rail Link)
Meanwhile, my first AM Orange Line commute from the Northside in 10 years shows it is crush loaded from NS to Back Bay (where it suddenly empties) Some of the pitch for NSRL really is the naive Northside to Back Bay (and giving the Orange Line "back" to its neighbors).
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"Trying to solve congestion by making roadways wider is like trying to solve obesity by buying bigger pants."--Charles Marohn Last edited by Arlington; 02-12-2019 at 11:25 AM. |
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