Central Subway San Francisco
San Francisco, CA
San Francisco County Transportation Authority
Central Subway Design Group
Infrastructure and Development
The Central Subway project in San Francisco will extend the T-line light rail to downtown from the existing route on Third street improving transportation in some of the city’s busiest areas. This 1.7 mile project includes three subway stations and one street level station and over a mile of dual subway tunnels.
As interagency coordinator for the $1.58B Municipal Transportation Agency’s Central Subway Project, Hollins Consulting Inc. staff managed the design and relocation of utilities to accommodate construction of the tunnel launch box and retrieval shafts as well as the three underground stations. This required an assessment of the project’s construction impact on existing utility infrastructure and coordination with responsible agencies to determine options to mitigate these impacts. Hollins Consulting Inc. staff coordinated planning and execution of utility relocation and site civil work, including impacts on surrounding properties, vehicular and pedestrian traffic flows, requirements for staging areas and neighborhood access. Coordinated civil design and site utility connections among the station design teams and affected agencies, such as PG&E, AT&T and the SFPUC’s domestic water, auxiliary water supply and sewer systems. Hollins Consulting Inc. staff also negotiated and tracked proportional costs of joint trench and service agreements with utility agencies serving the development.
Guy Hollins, William Hawk
Extension of Muni Metro light rail system
CalTrain to Chinatown
Stops in SOMA and Union Square