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...
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...
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.