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That would be the Central Subway, which will isolate the T-Third line from the rest of the system. The operational implications on the main trunk would likely be that whichever line is interlined with the T (historically the K, now the M) would terminate at Embarcadero or 4th & King/Caltrain...

Some additional history on Muni Metro and how it compares to the Green Line: The Muni subway is actually a combination of a former streetcar tunnel under Twin Peaks (from West Portal to Castro) and a 1970s outgrowth of the BART project (what are now the five Metro lines ran on the surface of...

Yep, that was my thought too. There will just need to be a sustained push once the new platforms are done to go back and add the second set.

I really hope they're taking the 225' platform length requirement into account as part of the BU Bridge-Packard's Corner stop consolidation.

Sounds like they're flipping all the platforms to the north side (track 1). This has construction advantages (minimal impact on current low-level platforms while work is going on) and also design advantages (handicap access could be cut into the embankment vs having to use the overpasses for...

Yesterday's FMCB meeting has some items regarding commuter rail visioning and Red/Blue (not linking directly since the slides were posted as powerpoints).

The only arguments I could see for an Alewife CR/RR infill is to provide access to the large amount of office/lab space and new housing out there and to capacity-relieve the Red Line. However, I think regional rail frequencies would be needed to justify anything, with the idea that...

I know it's been discussed many times before (either here or RR.net or both), but anything that runs short headways and requires grade crossing protection (i.e. not light rail) has a lot of potential to cause issues for the 1/CT1 on Mass Ave. Grade separation gets complicated because of the...

Public Forum (May 16 for those interested) and fact sheet for a TSP/bus lane/queue jump pilot on the 77/79 in Arlington.

The Sullivan lower busway and parking area is getting reconfigured starting this month. There was a public meeting last week, a powerpoint with schematics is available on the linked event site.

Quarterly update presented at the MassDOT/FMCB board meeting today. In other news, the first Type 9 got delivered last week. Schedule in the DGM remarks (linked) has the first pair in service this summer.

It doesn't justify its continued existence, but based on this 1955 aerial it looks to be an old alignment of SFR dating from when the abattoir occupied the current site.

A little tangential, but this article on Vox uses Pilgrim (and Northern Pass) as a case study of how decarbonization and environmentalism can sometimes move in opposite directions when it comes to nuclear and hydro.

Doesn't look like there's a lot of room to cram in an extra bridge level for crossing the western ramps. There could still be a footbridge with switchbacks for crossing Mystic Ave., but I feel that would be greeted similarly to the Magazine Street footbridge in Cambridge: people still run...

I actually like the idea of above-ground signage (assuming that the advertising will alternate with train information). Maybe not the most necessary at Arlington, but for example at Porter it's nice to know how much one needs to hustle for the next train.

A belated answer to the question of Mass Ave: The name was overlaid on local streets (see below) in 1894. Based on WardMaps and Wikipedia, here are the former streets most recently preceding the renaming: Boston: South of Harrison: East Chester Park Harrison-Shawmut: Chester Park...

As an aside, the reason for the stub is that McGrath didn't always connect directly to the Fellsway (see this map for the old configuration). When it was assembled from local streets, it looks as though McGrath absorbed what used to be Winthrop Street east of Broadway and ran all the way to...

The presentaton in question. There was also a set of slides on bus service planning.

A public meeting for the Mt. Auburn corridor is coming up on 12/13.

From a couple of weeks ago: Alewife plan omits bridge over train tracks eyed by City Council for dozen-plus years On the one hand, it makes some sense not to leverage an entire area plan on infrastructure that may or may not come to exist. On the other hand, it's a pedestrian bridge - not...