Quote:
Originally Posted by pdxstreetcar
I don't think its really about serving Marin as much as its about a key regional connection between BART and SMART that happens to be in Marin. Its looking like the Richmond-San Rafael Bridge is going to have to be replaced in the near future. Given BART currently terminates in Richmond and a new Richmond-San Rafael Bridge could theorically include a rail right of way that gets you to Marin and also gets you much of the distance. San Rafael is also a natural terminus (traditional downtown and local transit hub) and is not too far from the bridge. San Rafael could also be the only BART station in Marin (or there could also be a more park-n-ride focused one near 580 and San Quentin).....
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i think it's an interesting question. deep tunnels with TBMs have become pretty commonplace elsewhere in the world, so i'd phrase the question like this:
if a new bart line in 2030 crosses the bay into the south of market/mission bay and ends up going west under geary, how many riders are served and what are the capital costs and operating costs of the following two scenarios:
a) turn right under park presidio, put a station at california street, a station somewhere in the presidio, a station in sausalito, corta madera, near 101 and francisco (blow up all that big box stuff for a massive TOD), and then in downtown san rafael. 15.4 miles of tunnel, 6 stations, a new regional rail connection, and a one seat ride from san rafael to downtown san francisco to oakland and beyond.
b) keep going down geary to lands end, possible turning left and creating a small spur that links up with the N judah. do some medium scale TOD out there where the safeway is, the underutilized strip between the great highway and la playa, etc. 3.5 miles, 5ish stations.
i'm guessing the latter actually gets more riders, although a HUGE percentage of them would be already riding muni light rail and electric buses, which are powered by the PUC and totally carbon neutral. the riders being removed from the golden gate bridge are driving those 15 miles...