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Link21 completes analysis of train technology for second Bay Crossing

June 3, 2024

OAKLAND, CA — The Link21 Program is making progress toward its goal of creating a faster, more connected train system across the 21-county Northern California Megaregion that provides equitable, affordable, and accessible travel for future generations. One key aspect is building a second underground train crossing of the San Francisco Bay, allowing riders to travel to various destinations in the greater San Francisco Bay Area, Sacramento area, Monterey Bay area, and Northern San Joaquin Valley.

Link21 recently completed an exciting analysis of the different benefits that standard-gauge (Regional Rail) and broad-gauge (BART) train technologies can provide to the region through this project. This Program milestone will determine which technology should operate in the new crossing as an important step toward defining a project that will provide riders with enhanced and more reliable travel options.

Through the spring and early summer, Link21 is on an informational roadshow sharing analysis findings that demonstrate how the two technologies provide similar benefits and where they differ in terms of service, equitable outcomes, connections, and operations.

“Link21 will make investments to offer more train service for future generations to thrive, connect, and flourish in our vibrant Megaregion,” said Link21 Program Director Sadie Graham. “The community and stakeholder engagement we do now and the decisions we make will help ensure the project delivers accessible, reliable, and environmentally conscious transit solutions that will benefit our communities for years to come.”

Virtual Community Meetings

Register at to attend a meeting via Zoom and hear a presentation from Link21 Team members.

  • Thursday, June 6, 2024 | 6-7:30 p.m.
  • Monday, June 10, 2024 | 6-7:30 p.m.

 Meetings will be interpreted in Spanish and Cantonese. To request American Sign Language and other accommodations, email [email protected] or call 855-905-Link (5465) at least three days in advance of the meeting date.

Online Open House
Visit anytime 24/7, starting in mid-June, to conveniently participate when it works for you, whether it’s from the comfort of your own home or while commuting on the train. The Online Open House will be available for several weeks.

Can’t make the events? Link21 will be in local communities. Visit for more information.

About Link21

Link21 is a long-range transportation program sponsored by the San Francisco Bay Area Rapid Transit District (BART) and Capitol Corridor Joint Powers Authority. Together with partners, Link21 will transform the train system within the 21-county Northern California Megaregion, which includes the greater San Francisco Bay Area, the Monterey Bay area, the Sacramento area, and the Northern San Joaquin Valley.

Link21 will make it more convenient for people to take BART and Regional Rail (commuter, intercity, and high-speed train service) throughout the Megaregion.

Learn more at