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Mapping Bay Area Transportation Mega Projects

By Curbed Staff
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By Curbed Staff
6 comments / new

It was just last week that we mapped towers popping up in San Francisco. Those towers are going to be big, but this week we went even bigger: Bay Area Mega-Projects. These colossal transportation-focused infrastructure projects located throughout the region will cost approximately $20 billion dollars combined (not counting the inevitable cost overruns), create massive pathways for transportation, and expand multiple ways to travel, both rapidly and slowly, throughout the region. All the map points focus on transit, but that doesn't mean we included every massive transit project in the Bay Area. That said, if you're looking for an update on a specific project that isn't listed, drop us a line or leave a comment and we'll update the map accordingly. - Michael Conrad


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Central Subway

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The 1.7-mile addition to the existing T-Third Street line will extend from San Francisco's SOMA district to Chinatown, with a tranfer station at Union Square that will link to additional Muni lines and BART. The project is expected to be open for revenue service in 2018.

Market Street & 4th Street, San Francisco, CA 94102

San Francisco-Oakland Bay Bridge

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At $6.4B, the replacement to the eastern half of the bay bridge has turned into the most expensive public works project in California history. The 2.2 mile span has faced multiple setbacks and cost overruns and is set to finally open this Labor Day weekend.

Bay Bridge, Oakland, CA

Tom Lantos Tunnels

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After 6 years of construction the Tom Lantos Tunnels, better known as the Devil's Slide Tunnel, opened to the public last month in Pacifica, CA. The 4,200 ft. twin-bore tunnels divert motorists from the dangerous 1.1 mile "Devils' Slide" stretch of Highway 1, known for crumbling into the Pacific Ocean during bad weather.

Tom Lantos Tunnels, Pacifica, CA 94044

Transbay Transit Center

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This massive reconstruction of the Transbay Transit Center will feature rail stations for both Caltrain and California High Speed Rail, as well as bus ramps for local and regional lines all under a 5.4-acre rooftop park. The Pelli Clarke Pelli-designed building is expected to be completed in 2017.

Mission Street & 1st Street, San Francisco, CA 94105

Caldecott Tunnel Fourth Bore

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The fourth bore of the tunnel connecting Oakland to Contra Costa County is nearing completion. The new tunnel will allow 2 bores permanently in each direction, rather than changing the direction of the center bore, as is now currently done. The 3,700 ft. tunnel is set to open near the end of this year.

Caldecott Tunnel, Oakland, CA

Presidio Parkway

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The massive redesign of the seismically-unsafe Doyle Drive will produce The Presidio Parkway, a new expressway that will connect Lombard St to the Golden Gate Bridge. Features include an expanded roadway and 2 sets of tunnels that will submerge part of the roadway allowing for easier park access and enhanced views. The first phase of the project is complete, with final delivery expected in 2015.

Presidio Parkway, San Francisco, CA

Caltrain Downtown Extension

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While not officially started or even funded, the 1.3 mile extension of Caltrain to the Transbay Transit Center has been made a top priority for funding by the Metropolitan Transportation Commission, so we expect this one to get started eventually. The tunnel will be shared with high speed rail and is dependent on the electrification of Caltrain.

Mission Street & 2nd Street, San Francisco, CA 94105

BART to San Jose

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BART's $1.9B plan to expand have begun with the currently under construction 5.4-mile Warm Springs extension in south Fremont. This will be followed by a 16-mile extension into San Jose with a terminus near Berryessa Street, to be completed in 2018. A third, yet unfunded phase, would bring BART through downtown San Jose, and terminate at Diridon Station in Santa Clara.

Warm Springs Boulevard, Fremont, CA

Caltrain Electrification

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Electrification of the diesel-powered Caltrain fleet is required to accommodate the future high speed blended-rail system, as well as allow underground access into downtown San Francisco. This will be integrated into a general upgrade of Caltrain's systems and is scheduled for completion in 2019.

4th Street, San Francisco, CA

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Central Subway

Market Street & 4th Street, San Francisco, CA 94102

The 1.7-mile addition to the existing T-Third Street line will extend from San Francisco's SOMA district to Chinatown, with a tranfer station at Union Square that will link to additional Muni lines and BART. The project is expected to be open for revenue service in 2018.

Market Street & 4th Street, San Francisco, CA 94102

San Francisco-Oakland Bay Bridge

Bay Bridge, Oakland, CA

At $6.4B, the replacement to the eastern half of the bay bridge has turned into the most expensive public works project in California history. The 2.2 mile span has faced multiple setbacks and cost overruns and is set to finally open this Labor Day weekend.

Bay Bridge, Oakland, CA

Tom Lantos Tunnels

Tom Lantos Tunnels, Pacifica, CA 94044

After 6 years of construction the Tom Lantos Tunnels, better known as the Devil's Slide Tunnel, opened to the public last month in Pacifica, CA. The 4,200 ft. twin-bore tunnels divert motorists from the dangerous 1.1 mile "Devils' Slide" stretch of Highway 1, known for crumbling into the Pacific Ocean during bad weather.

Tom Lantos Tunnels, Pacifica, CA 94044

Transbay Transit Center

Mission Street & 1st Street, San Francisco, CA 94105

This massive reconstruction of the Transbay Transit Center will feature rail stations for both Caltrain and California High Speed Rail, as well as bus ramps for local and regional lines all under a 5.4-acre rooftop park. The Pelli Clarke Pelli-designed building is expected to be completed in 2017.

Mission Street & 1st Street, San Francisco, CA 94105

Caldecott Tunnel Fourth Bore

Caldecott Tunnel, Oakland, CA

The fourth bore of the tunnel connecting Oakland to Contra Costa County is nearing completion. The new tunnel will allow 2 bores permanently in each direction, rather than changing the direction of the center bore, as is now currently done. The 3,700 ft. tunnel is set to open near the end of this year.

Caldecott Tunnel, Oakland, CA

Presidio Parkway

Presidio Parkway, San Francisco, CA

The massive redesign of the seismically-unsafe Doyle Drive will produce The Presidio Parkway, a new expressway that will connect Lombard St to the Golden Gate Bridge. Features include an expanded roadway and 2 sets of tunnels that will submerge part of the roadway allowing for easier park access and enhanced views. The first phase of the project is complete, with final delivery expected in 2015.

Presidio Parkway, San Francisco, CA

Caltrain Downtown Extension

Mission Street & 2nd Street, San Francisco, CA 94105

While not officially started or even funded, the 1.3 mile extension of Caltrain to the Transbay Transit Center has been made a top priority for funding by the Metropolitan Transportation Commission, so we expect this one to get started eventually. The tunnel will be shared with high speed rail and is dependent on the electrification of Caltrain.

Mission Street & 2nd Street, San Francisco, CA 94105

BART to San Jose

Warm Springs Boulevard, Fremont, CA

BART's $1.9B plan to expand have begun with the currently under construction 5.4-mile Warm Springs extension in south Fremont. This will be followed by a 16-mile extension into San Jose with a terminus near Berryessa Street, to be completed in 2018. A third, yet unfunded phase, would bring BART through downtown San Jose, and terminate at Diridon Station in Santa Clara.

Warm Springs Boulevard, Fremont, CA

Caltrain Electrification

4th Street, San Francisco, CA

Electrification of the diesel-powered Caltrain fleet is required to accommodate the future high speed blended-rail system, as well as allow underground access into downtown San Francisco. This will be integrated into a general upgrade of Caltrain's systems and is scheduled for completion in 2019.

4th Street, San Francisco, CA