Crazy Transit Pitches

[CheapLeak]

Great takes. Sorry to anyone if my idea ended up being the same as yours, honestly just really liked that crossrail idea.

 

[The EGE]

Great takes. Sorry to anyone if my idea ended up being the same as yours, honestly just really liked that crossrail idea.

That's the nature of transit pitches - it's very common for multiple people to independently come up with similar ideas, especially in a 300-plus-page thread! If you look at the very first page of this thread, there are ideas there that we still discuss 15 years later - and there's someone replying to an idea with a century-old map of a similar concept.

This is why my default preference for any cross-harbor tunnel is one that can accommodate light rail trains that serve the front doors of Logan's terminals, just like the Silver Line does today.

That's definitely the direction I've gone as well. This is my personal crayon for that idea, which could more-or-less be cut-and-cover within Logan. You can either do 2 or 3 airport stations; 2 gives you a slightly longer walk to Terminal C but makes the curves easier.

 

[Teban54]

Re: South Boston

Employment patterns are the main reason why I think an extension of an LRT Silver Line down to East Broadway makes the most sense. 1SR to Financial District and it's nearest commercial center, Seaport. There's space on Summer St and L St for a reservation, and there are only 5 cross-streets. Additionally, there is a slight incline from 2nd street, potentially making it easier to bury the last leg of the line ( cutting down crossings to 3 and avoiding any interference with Broadway). Another cool aspect of this is that now the entirety of South Boston has a 15-minute walk to a major transit connection.
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This is elegant! I agree that if we want rapid transit spacing in particular, then this is probably the most cost-effective way to do it.

I was very much surprised by the 15-min walkshed coverages of Broadway and Andrew, given that both stations pretty much have their walksheds limited to one or two quadrants. (15 min still seems a bit too long, but I guess it's decent enough here.)

A streetcar on Broadways is nice, but at this point, I think the benefits of it seem to mostly duplicate the benefits of the existing 9 and 10 for local service. Still stuck in traffic, vulnerable to accidents, and slow speeds. I think a reservation (like what is planned at the end of the E) would be met with fierce opposition. Southie loves their car space and the grid is working against you here with 17 cross-streets between the Red Line and City Point. There would be a lot of uproar about who loses their left or right run onto Broadway and I'm not sure how much faster it would be in the end. Tunnelling would mean it would be a lot less local and a whole lot of money.

• Dedicated ROW and speed opportunity:
  • Most of Southie's streets are narrow, so even bus lanes are difficult. There are also a lot of intersections. Given that, it seems unlikely that a streetcar would be faster than a bus -- and might actually be slower, given acceleration rates
• Stop spacing:
  • Current stop spacing is often every block, typically well-below 1000'; obviously stop consolidation is an option, but given the constrained street space, it seems reasonable to try to spread the load out rather than have larger crowds boarding at fewer stops

Indeed, West Broadway at its narrowest is about 47' wide, or down to 40' at intersections with expanded curbs. While that's theoretically enough for two transit lanes, two travel lanes, and maybe a unidirectional parking lane... It still means a significant reduction in parking. (You may make it work by running on the parallel W Fourth St in one direction, though.)

Dorchester St (to Andrew) and East Broadway west of L St are wider, usually at 60'. That's enough for a reservation, but the less ideal transfer point of Andrew would probably wipe out the time savings.

So I agree with everyone (including @HenryAlan's comment) that an isolated streetcar that ends at Broadway station is definitely not worth it -- even if you can somehow get a reservation, it's better suited for buses/BRT. The value of LRT would lie in through-running beyond the Red Line. Running to the downtown core is ideal, but Copley may be fine, thanks to existing ridership patterns cultivated by the 9 bus.

It's also a fact that Southie residents use buses almost exclusively to travel out of the neighborhood, not within. Quoted from Route 9's Better Bus Report:

Boardings are high at nearly all nearly all stops on Broadway in South Boston, with most serving over 200 boardings. However, there are very few alightings, indicating that nearly all riders are traveling out of South Boston rather than to other locations in South Boston.

A few datapoints for consideration:

• Current bus ridership: looking at the 2018 Better Bus Profiles (for ease of reference, gambling that the underlying dynamics haven't shifted post-COVID):
  • 7, Summer Street <> South Station (ish): 4,400 daily riders
  • 9, E Broadway <> Broadway station <> Copley: 6,400 daily riders
    • But note: ~1,000 of these riders board at Broadway, likely transfering from the Red Line to reach destinations in the South End; effective ridership in South Boston proper may be closer to 5,400
  • 11, 8th St <> 6th St <> Broadway station <> downtown: 3,000 daily riders

Note that for the 9 bus, the Bus Route Profile states the following for westbound ridership:

• 800 South Boston riders alight at Broadway (1/3 of all boardings)
• 500 riders board at Broadway, to utilize the Broadway-Copley connection
• South End stops see 160 boardings and 325 alightings
• The Back Bay/Copley stops see 1,300 boardings (40% of all riders)

This means 2/3 of Southie riders are actually heading towards the Copley or Arlington areas, as opposed to South Station or DTX. That's much more significant non-Red-Line ridership than I was expecting! This provides some basis for through-running services.

(I could have done this analysis for more recent years, but decided not to spend too much time at the moment.)

I think it's also worth noting that, to my knowledge, there has never been a particular push locally for grade-separated rapid transit service in Southie, nor any push to restore a streetcar. (Indeed, some original BERy plans called for El service to Southie, but they were dropped early on.) And I think this largely makes sense; of the reasons to institute a light rail line, not many present a strong case:

[...]

• Integration into a subway:
  • Yes, a light rail line could either hook into the subway at Pleasant Street, or could connect at what is now Silver Line Way
  • That being said, I don't think there's a hugely urgent need for this kind of integration

Assuming an LRT conversion of the Silver Line, I would probably look at some way to extend SL2 to City Point, or add a second branch that pops down along Summer St. Yhe original SL3 did poorly due to competition from the 7, but an LRT line would offer a 1SR to Back Bay and either Kenmore or Huntington, so it would probably command greater interest. I like @samsongam's thought process and visualization.

Re: the bolded parts:

• I wonder if the lack of advocacy was because the 7 and 9 buses had never been officially acknowledged as important routes before -- even though they factually are, with over-the-top rush hour frequencies and high-ranking riderships. Also, off-peak frequencies on all Southie buses had moderate to poor compared to rush hours. However, all of this will change with BNRD, where they now have two Frequent Bus Routes with guaranteed 15-min headways off-peak.
• IIRC, the original SL3 failed largely because of terribly roundabout routes. The fact that it had to go to Northern Ave @ Tide St was ridiculous (see the Wikipedia image below). But even if a revived "SL3" LRT only goes to South Station, a better route can still do it wonders.
• I wonder if the lack of an "urgent need for integration" was partly triggered by these historical anecdotes above, and the consequent beliefs that "LRT doesn't work here" or "buses here aren't important enough". But the bases for such beliefs are in question.

Overall, I do agree that it's not at the top of any priority lists. But a Green Line Reconfiguration framework, particularly one where Seaport gets 4 bullets, gives us more than enough room to experiment with stuff on the Seaport end. (The Bay Village end is more challenging, but not impossible.)

 

[Teban54]

Heck, you could even have a second branch into Southie proper, with one going down Summer St (like @samsongam showed) and a second one reclaiming some space for a semi-dedicated ROW along Pappas Way, with about a quarter-mile of running on Dorchester St, into a transit plaza at the intersection with the Broadways:

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That's quite an intriguing idea, even if not the most relevant.

But it got me thinking... How about a unidirectional loop that joins these two "branches" together?

But to me, I think the biggest swing would be serving Southie more centrally by way of a Red Line Realignment to the Seaport, with the new subway hooking down along either D Street or Dorchester St (or Track 61). Topologically, a lot of the subway <> surface connections would remain similar, just relocated east. But the advantage is that x% of Southie would be within the walkshed of a subway line, which certainly would be an upgrade.

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That being said, I don't think there's a particularly urgent (Southie-based) case for the Red Realignment; to me the primary draw is serving the Seaport -- if you can tack on service to Southie, all the better of course.

I don't think either of these does much for Southie though. Even going via D St "only" shifts the W Broadway station by 2,200 ft, whose walkshed still has plenty of overlap with today's Broadway station.

You pretty much need to turn at Pappas Way / Dorchester St to go deep into Southie, at which point you're running across the whole Seaport and incurring a significant detour. (Which is why I agree that such a reroute should be primarily about Seaport.)

 

[Teban54]

Logan Airport

This is more of a question than an actual “idea” I have to share (which is basically me slightly changing that Crossrail idea that was floated a little while back here). My “idea” is basically reusing the original Eastern R.R. ROW to reroute the entire Newburyport/Rockport Line. It would follow the old ROW until it goes behind that truck depot off of 1A. Then it would go underground, with a singular station under Logan (likely located under central parking, with either tunnels to the terminals, or to a connection with an APM), before going under the harbor. It would then curve and go under Summer street, with a station around the convention center. Finally, it would go under South Station (probably around the bus terminal), and connect with the NEC either right before Back Bay, or a little after it.

Throwing the cost aside, is this even logistically possible? Also, would this be too redundant, given it mostly follows the Blue Line? A new station would be made right before the junction in Revere, and an extension of the urban ring from Sullivan to a tunnel under the BL airport station would take over the old tracks. This also would also be paired with the NSRL.

I think that's been proposed on here before, and I know Ari Ofsevit has proposed it. It's certainly not easy - you're talking 4-5 miles of new tunnel, almost entirely under water and filled land - but certainly intriguing.

There had been heavy debates about a mainline rail link between South Station and Logan Airport. In fact, there had been an insane real-world study: (link to archBoston discussion)

F-Line in particular is quite heavily against it, and so were many other members. Not just because of cost, but such an alignment can only be used almost exclusively by the Newburyport/Rockport line. For all other lines, it ranges from bad to impossible. See the link above for more justifications.


LRT Cross-Harbor Tunnel

I agree that any new harbor crossing should be primarily for rapid transit, especially for the Seaport Transitway or something similar.

That said:

I know I've said this before, but I think we underappreciate how good the Silver Line actually is. Believe me, it could and should be much better, don't get me wrong. But I think we don't realize how unusual it is to have a curbside 1SR directly into the CBD and to the major transit hub. Most airports with a transit connection require the intermediate use of a people-mover, which connects to a train that then goes to the CBD. SFO, JFK, and Newark are all like this, as will LAX. The only two that I can think of in North America with a direct connection to the terminals are Philadelphia and O'Hare. In Philadelphia, the Airport Line runs half-hourly (why), using 2-car trains running from platforms shorter than the Green Line's; O'Hare is best-in-class, but even there you need a people mover to get to one of the terminals.

This is why my default preference for any cross-harbor tunnel is one that can accommodate light rail trains that serve the front doors of Logan's terminals, just like the Silver Line does today.

That's definitely the direction I've gone as well. This is my personal crayon for that idea, which could more-or-less be cut-and-cover within Logan. You can either do 2 or 3 airport stations; 2 gives you a slightly longer walk to Terminal C but makes the curves easier.

View attachment 62270

I've gone back and forth on this. My current concerns are:

• With multiple stops at airport terminals, trips across Logan Airport become a headache. This includes trips from Blue Line (and Chelsea) to Seaport and South Station, currently served by the SL3.
• The terminals' access roads are very prone to traffic, so street-running LRT destroys reliability and should be immediately out of the question.
• If you're building a new grade-separated route for LRT, that same expense can probably be used to run an APM or moving walkways, either in place of or in addition to the LRT.

If you want to build multiple LRT (or possibly HRT) Urban Ring stops at airport terminals, especially if you also want your line to go beyond the Blue Line, it almost feels like the extra stops should either be on a terminal loop, or with bypass tracks for through-running "express" trains. In both cases, the goal would be to only have trains terminating at Logan Airport stop there.

Alternatively, it seems possible to have a centralized "Airport Terminals" station within 800-1,300 ft from all terminals. That seems fine to me, even if a bit longer than ideal.

Having said that... I can probably get by with two intermediate stops, one at terminals A/B and one at C/E.

O'Hare is best-in-class, but even there you need a people mover to get to one of the terminals.

I don't think that's relevant here: ORD's Terminal 5 is entirely out of the way in a different complex, with a straight-line distance of 3,000 ft even from the nearest terminal. Also, their Blue Line passes relatively closely to Terminal 5, just that it's on a curve. If you really want to, you can probably have a Blue Line infill stop there with a walk of ~1,200 ft to the terminal.