Facebook Could Partner With Local Transit Authorities to Repair Defunct Rail Bridge

The Dunbarton Rail Bridge has been out of service since the 1980s. In a potentially groundbreaking development, Facebook is interested in repairing the bridge to serve multi-modal commuters.

1 minute read

June 18, 2018, 10:00 AM PDT

By James Brasuell @CasualBrasuell


San Francisco Bay Area

The Dunbarton Rail Bridge no longer serves rail traffic, so it's left in the open position to allow boats to pass. | Howardpaul2 / Wikimedia Commons

"Facebook has entered into negotiations with the San Mateo County Transit District to improve the Dumbarton corridor," reports Wendy Lee. "The negotiating agreement, approved Wednesday by the transit district’s board, will allow Facebook and a public infrastructure investor, Plenary Group USA, to begin working on a plan to improve the corridor."

"The project could include renovating a defunct rail bridge over the bay, built in 1910, that parallels the existing, congested bridge for cars and trucks," according to Lee. Commuters could use the rail line to connect between the East Bay and the Peninsula—where Facebook and many other tech companies are located.

A San Mateo County Transit District report on the project included bike and pedestrian infrastructure as well as 'enhanced bus service' as a possibility for the project.

Thursday, June 7, 2018 in The San Francisco Chronicle

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

June 25, 2025 - Diana Ionescu

Person wearing mask walking through temporary outdoor dining setup lined with bistro lights at dusk in New York City.

Restaurant Patios Were a Pandemic Win — Why Were They so Hard to Keep?

Social distancing requirements and changes in travel patterns prompted cities to pilot new uses for street and sidewalk space. Then it got complicated.

June 19, 2025 - Diana Ionescu

Map of Western U.S. indicating public lands that would be for sale under a Senate plan in yellow and green.

Map: Where Senate Republicans Want to Sell Your Public Lands

For public land advocates, the Senate Republicans’ proposal to sell millions of acres of public land in the West is “the biggest fight of their careers.”

June 19, 2025 - Outdoor Life

Aerial view of town of Wailuku in Maui, Hawaii with mountains in background against cloudy sunset sky.

Maui's Vacation Rental Debate Turns Ugly

Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.

July 1 - Honolulu Civil Beat

White and purple sign for Slow Street in San Francisco, California with people crossing crosswalk.

San Francisco Suspends Traffic Calming Amidst Record Deaths

Citing “a challenging fiscal landscape,” the city will cease the program on the heels of 42 traffic deaths, including 24 pedestrians.

July 1 - KQED

Tents inhabited by unhoused people lined up on sidewalk in Los Angeles, California in front of industrial building.

California Homeless Arrests, Citations Spike After Ruling

An investigation reveals that anti-homeless actions increased up to 500% after Grants Pass v. Johnson — even in cities claiming no policy change.

July 1 - Times of San Diego

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.