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Study finds subway extensions to North Beach/Fisherman’s Wharf are costly but effective; Columbus and Powell subway alignments score highest
Summary
An interagency concept study found subway alignments to Fisherman’s Wharf / North Beach would cut travel times substantially and attract ~40,000 daily trips, but cost $440M–$1.4B; staff recommended feeding study into city and regional planning for funding prioritization.
The Planning Department, San Francisco Municipal Transportation Agency and Transportation Authority presented a concept study analyzing 14 possible alignments to extend the Central Subway (T‑Line) to North Beach and Fisherman’s Wharf. The study considered subway vs. surface options, station locations, constructability, ridership, travel times and rough capital costs in 2014 dollars.
Transportation Authority staff said fully underground options provide the fastest running times and highest reliability but cost roughly double comparable surface or hybrid alignments: cost estimates ranged from about $440 million for the shortest surface scheme to about $1.4 billion for the longest fully underground option. The team estimated the extension could attract on the order of 40,000 additional daily trips, increasing T‑Line ridership by roughly 55 percent compared with the Central Subway alone.
Key findings: two subway alignments — a fully underground Columbus Avenue option and a Powell Street subway — ranked highest on constructability, ridership and long‑term reliability in the study’s scoring. The report also flagged difficult geotechnical constraints near North Point (large sewer outfall) that made two alignments infeasible without substantial cost or disruption. Staff highlighted that land‑value capture could supply only a modest share (5–20 percent) of a local match and that federal New Starts funding would be a likely fit for a large subway project.
Why it matters: Commissioners and public commenters framed the extension as an opportunity to improve north‑south connections for residents, workers and tourists, warning that any final alignment must be designed to minimize neighborhood disruption during construction and address station siting near sensitive sites (Pagoda site, Kirkland Yard). Several neighborhood groups urged planning studies for land‑use and station area opportunities to secure local funding elements.
What’s next: staff expects a revised final study in January 2015 and said the analysis will feed into the San Francisco Transportation Plan update, the MTA rail capacity study and regional planning at MTC. Commissioners asked for joint hearings with transit agencies and city departments to align land use and funding options.
