I was responding to both you and
@Tallguy in the same post, so apologies for not being clearer. Also, I'm not sure why I went brain dead on the counting the existing OL express track and saying we needed the Reading track to recreate the use of the express track. You're absolutely correct. We have the same sources when it comes to Yard 21 being the GL UR station, but my point is that this then has to cross the entire current row without taking away from what's there, bridge across, and then we need 4 lines on the ER - Everett side plus the northern strand (for the freight siding issue? For a possible GL branch? Who knows?).
But, Tallguy is talking about branching the OL north of Sullivan so now GL UR needs to cross the 3 OL tracks and the Reading commuter rail, leave space for the ER CR and the new OL branch, with 6 tracks crossing the river, and the GJ/ER is designed to handle the 6 on the Everett side? No, it's not. Presumably this future does not have an issue with the northern strand.
I was talking about the current and envisioned tracks directly north of the station, not the tracks specifically headed north.
Tallguy, what I am not understanding is your logic of why splitting the OL at Sullivan is at all valuable in a future where GL riders are already on the ROW. I don't want to strip away the full context of the exchange between you and Brattle,
so I'll link it here, but for quick context here in this thread, here's the cliffnotes:
This is anecdotal, but tell that last line to my circa 2019 pregnant wife who could never find a seat at Assembly. That said, you're correct that the crush load is at Sullivan.
I agree with both of these points so far. It appears that you, Tallguy, don't agree with Brattle, but it seems like that stems from this:
This point is almost completely over-exaggerated. Here's the
complete system map with all of the buses. On page 2, look at all of the bus routes both west of the OL and north of Sullivan. Everything close to the GLX already goes either to Davis or Sullivan (we are looking at OL capacity north of Sullivan) except for the northern 134 of which the route already runs more than half of its trips from Medford Center to Wellington alone; it's biggest catchment. Everything east of 93 to the OL is still going to the northern OL. Even most of the Malden -> East bus ridership is protected because the bus lines either aren't close to Everett or the stolen ridership is coming out of the to Wellington crowd:
97: 40% destination Malden - 45% destination Wellington
99: The data is incomplete here as only the inbound data for each OL station is given. We cannot see if the morning outbound passengers are going to local stops or Malden Center.
106: 526 Daily passengers to Malden Center vs 475 to Wellington.
And for the second part, you are talking about Malden Center almost totally in isolation with the exception to bus service to the west. What about future development at Assembly and Wellington. Surely they will not remain a sea of parking lots in perpetuity? Surely they will redesign the bus system with new stations in mind, bringing in new bus service, or beefing up shotty service where it exists. What about the extension to Reading? Under the branch plan, it cannot due to capacity. If 2019 ridership couldn't get a seat at Assembly and they're still building, eventually the Sweetser circle ridership won't be the only deciding factor. This is
especially true in a theoretical scenario where GL service up broadway
already exists or at the very least goes to or near Sweetser circle. What we're really comparing is the loss of riders at Wellington to future development at all current and any potential stations on the northern OL I would argue that given the scenario (GL UR with potential Green branch up Broadway) the potential ease of the branch is not worth the potential of the density for the northern OL.