Overview
Rendered image of an island with buildings and a port in the nearby lagoon. There is a ferry pulling up to a dock in the foreground.

Credit: TICD

Treasure Island Mobility Management Agency awarded $20 million U.S. EPA Community Change Grant for transportation improvements on Treasure Island

The U.S. Environmental Protection Agency has awarded the Treasure Island Mobility Management Agency, or TIMMA, a $20 million grant for a collection of Treasure Island transportation improvements called Treasure Island Connects. For more information, here is the Press Release

Transportation Program Overview

By 2042, the Treasure Island neighborhood will grow by up to 8,000 homes—many offered at below-market rates—housing more than 20,000 new residents. Along with more housing, this new development includes extensive open space, hotels, restaurants, shops, and entertainment venues.

This new activity will result in tens of thousands of additional trips to and from the island each day. The Treasure Island Mobility Management Agency is developing a comprehensive transportation program that will meet the current and future needs of residents, workers and visitors to ensure a vibrant community.

The Treasure Island Transportation Program is governed by the San Francisco Board of Supervisors in its capacity as the Treasure Island Mobility Management Agency Board. 

Transportation Program Goals

The Treasure Island Transportation Program is guided by two performance goals: that at least 50% of trips are made by walking, biking, and taking transit, and that the program be financially self-sufficient. We can achieve this by:

Promoting walking and biking: Bike lanes, pedestrian paths, and Bay Wheels bike sharing will make biking and walking around the island safe and enjoyable.

Providing high-quality transit: More Muni service, along with new AC Transit, ferry service, and an on-island shuttle will help ensure that at least 50 percent of trips to and from the island are made using sustainable modes.

Reducing the need for car ownership and use: People who drive will pay a toll for driving on and off of the island. The cost of housing will not include parking, so people who own cars will pay for parking separately. Access to car share vehicles will make it easier to live without owning a personal vehicle on the island.

Promoting affordability: Subsidized transit passes and discounts to services like car and bike share will make transit affordable and accessible to longtime residents and people living in below market-rate housing. 

Achieving financial sustainability: The transportation program should be  financially self-sustaining when 4,500 of the 8,000 housing units have been occupied.

Estimated Timeline (subject to funding)

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Timeline graphic (decorative)
  • Implementation Milestone
  • Transit Milestone
  • Residential Milestone

2006

First Transportation Plan developed, including toll

2008

State legislation authorized Treasure Island toll

2011

Treasure Island Development Agreement executed

2016

TIMMA Board approved initial toll policies

Fall 2019

Macalla Road construction began  1

Toll exemption for existing residents adopted

Summer 2020

Southgate Road Realignment construction began  2

2022

Interim Ferry Service started  5

Residents began moving into new housing

2023

Southgate eastbound off-ramp opened  2

West Side Bridges construction began  3

2025/2026 (pending funding)

Permanent Ferry service begins  5

On-island shuttle service begins  6

East Bay bus service begins  7

Transit pass program rollout

2026

West Side Bridges completed  3

2027

Macalla Road final configuration completed  1

Hillcrest Road construction completed  4

2028

Quarter buildout of Treasure Island housing (2,000 units)

Initial increases in Muni bus service  8

2033

Half buildout of Treasure Island housing (4,000 units)

Further increases in Muni bus service; ramp-up complete  8

2042

Full buildout of Treasure Island housing (8,000 units)

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Implementation Milestones
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Transit Milestones

Timing TBD

Tolling begins

Program Partners

  • Treasure Island Development Authority
  • MTC
  • Caltrans
  • SFMTA
  • WETA
  • AC Transit
  • US Coast Guard

Resources

Treasure Island Development Authority website

Contact 

Suany Chough, Assistant Deputy Director for Planning

Get email updates on this project

Related programs

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Vista Point is a scenic rest stop on Yerba Buena Island near the Bay Bridge east span bicycle/pedestrian path.
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The new westbound I-80 on- and off-ramps that connect Yerba Buena Island and Treasure Island to the eastern span of the Bay Bridge are open.
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The project reconstructed the I-80 eastbound off-ramp to Yerba Buena Island. The project features an innovative design that enhances safety and circulation. The project was completed in 2023 and reopened to traffic.
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The West Side Bridges Retrofit will seismically retrofit eight existing bridge structures along Treasure Island Road to meet current seismic safety standards.
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The study goal is to understand resident and worker transportation needs, outline recommended short-term public transit improvements, and plan for supplemental transportation options.
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The Treasure Island Mobility Management Agency launched an autonomous shuttle service on Treasure Island from August to December 2023 to better understand how such a service could meet the needs of people traveling around the neighborhood.
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This project will provide protected bicycle and pedestrian pathways that run along Hillcrest Road and Treasure Island Road.
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This project will upgrade the roadway to modern roadway and seismic standards and provide additional space for pedestrians and bicyclists.