Green Line Expansion Beyond Lechmere

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Re: Green Line Expansion Beyond Lechmere

Postby Arlington » Thu Sep 06, 2018 10:37 am

Take a ride in the Lowell Line from NS to W.Med.Sq.--you will see real construction progress all along the way: mostly prepping the now tree-bare emabankments and the grading and ballasting of the base of the ROW (as a construction accessway)

For example they have covered the two GLX slots on the Harvard Ave bridge at Tufts/St Clement's so that heavy vehicles can go up & over
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Re: Green Line Expansion Beyond Lechmere

Postby Arlington » Wed Sep 12, 2018 7:40 pm

Big piles of ballast have been delivered to many spots throughout Somerville along the Lowell Line. Some is holding back the retaining walls, but what is the rest for?
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Re: Green Line Expansion Beyond Lechmere

Postby ceo » Wed Sep 12, 2018 8:56 pm

Also, the other day I noticed it looked like new rail had been delivered along the corridor, at least in the vicinity of the Central St bridge. It might have been the rail left over from the old freight track (it was two rails next to each other, next to the inbound commuter rail track), but I had thought that had all been taken out.
Incidentally, the newly-rebuilt Hoyt-Sullivan Playground has a nice overlook over the corridor.
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Re: Green Line Expansion Beyond Lechmere

Postby Arlington » Thu Sep 13, 2018 7:41 am

I'm pretty sure that the freight track was stick rail (wasn't it?) so if the rail you/we see is jointed then it is being taken out.
Last edited by CRail on Thu Sep 13, 2018 11:01 am, edited 1 time in total.
Reason: Unnecessary quote removed.
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Re: Green Line Expansion Beyond Lechmere

Postby ceo » Thu Sep 13, 2018 8:25 am

This really looked like CWR. And the freight track was definitely stick rail, at least the bit near the Lowell St bridge I watched them taking out.
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Re: Green Line Expansion Beyond Lechmere

Postby ceo » Tue Sep 18, 2018 3:44 pm

OK, so they're building a track for real along there, to shift the CR to that side of the corridor and make room for bridge abutment and retaining wall work along the other side. MassDOT sent out a notice that the new ties are going to reek of creosote before they get covered with ballast.

Do we want a new thread for construction updates? Right now they're getting split between this thread and GLX Impact on NH Route (Lowell Line).
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Re: Green Line Expansion Beyond Lechmere

Postby zski128 » Tue Sep 18, 2018 5:04 pm

That was me posting on the Lowell line thread. I can start posting glx updates here. All the old rail was removed a while back so all the rail you see now is new. There is a mix of cwr and some stick rail along the route now. There looks to be a permanent switch installed just south of the bridge entering Boston. Not sure how they will swing to Lowell line over, it will be a fairly sharp turn.
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Re: Green Line Expansion Beyond Lechmere

Postby kwf » Wed Sep 19, 2018 1:28 pm

They layed down the ties for the new track in the Somerville Jct area and the rail is being put in place
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Re: Green Line Expansion Beyond Lechmere

Postby Arlington » Wed Sep 19, 2018 8:30 pm

Can anyone quickly explain how laying a third track (and then taking out one or two of the existing)works better than relocating one of the tracks that's already there?
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Re: Green Line Expansion Beyond Lechmere

Postby MBTA3247 » Wed Sep 19, 2018 9:19 pm

Cutting the rails at either end of the new triple-track section and dragging those over to connect them to the new track can be done in a day or less, which is way faster than dragging the entire track over.
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Re: Green Line Expansion Beyond Lechmere

Postby ceo » Wed Sep 19, 2018 9:54 pm

To be clear, that's a day or less of having to take the Lowell Line out of service, as opposed to the entire week or so it would take to drag the track over. What I don't know is if the track is going to be pulled up, or left in place to become the inbound Green Line track when they're done.
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Re: Green Line Expansion Beyond Lechmere

Postby CRail » Wed Sep 19, 2018 11:45 pm

ceo wrote:Do we want a new thread for construction updates? Right now they're getting split between this thread and GLX Impact on NH Route (Lowell Line).


Mod Note: I don’t think another thread for the topic is necessary, though I do think GLX impacts on RR infrastructure warrants it’s own discussion. Just use your best judgment as to which your comments better fit in, and certainly use the quoting feature to cross reference between the two.
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