Underground station layouts

[The EGE]

Spent last night reading through Red-Blue Connector documents, so here's a slightly corrected Bowdoin and not-very-exciting Charles/MGH.

 

[Bananarama]

MGH is sort of like a... uhhhhh... tadpole...

 

[George_Apley]

Hahaha, I saw the energy sword from Halo.

 

[Charlie_mta]

Looking at that finely executed layout of Bowdoin Station, it looks like both tracks of a Blue Line extension could be built completely on the south side of the station, thus completely preserving the existing station, not as a functioning station but as an artifact, maybe a museum or just preserved. In the 1960's, Cambridge Street was relocated to the south and provides ample footprint for this to be possible.

 

[F-Line to Dudley]

Looking at that finely executed layout of Bowdoin Station, it looks like both tracks of a Blue Line extension could be built completely on the south side of the station, thus completely preserving the existing station, not as a functioning station but as an artifact, maybe a museum or just preserved. In the 1960's, Cambridge Street was relocated to the south and provides ample footprint for this to be possible.

AFAIK there are some structural blockers that eliminate that trajectory. All of the R-B study verbiage about saving Bowdoin said that the island platform would've had to be extended further east further towards GC because the only way to get a straight alignment was to blow clear through the egress area. That's been a constant of every single umpteen times this has been studied, which would indicate that there's some of large-sized under street blocker like major utilities (local electrical sub??? steam pipes???) getting in the way. No idea what it could be..but it either could've been there right from Day 1 when they extended the subway to Bowdoin in 1916 or appeared in any of the waves of urban renewal later. Cambridge St. is tough lineage to trace with all the reboots it's gotten over the last 110 years.

I know the loop area is solid-ass concrete wall, so any which way they're going to be nuking that whole area and pulling out metric shitloads of concrete to straighten the alignment for continuation to Charles sans a schedule-hosing outbound speed restriction.

 

[BeyondRevenue]

I made this and forgot to upload it. From the Barcelona diagrams, this is what I wanted to do with Haymarket:

 

[bbfen]

EGE,

Any chance you mightat some point consider Columbia, er, JFK/UMass? I lived down that way for a summer many, many years ago, and was always fascinated by the flying junction north of the station when I commuter to college in Back Bay each morning.