Link21 is a complex program that builds on decades of previous studies and projects. Here are several documents that can help you understand the origin of and thinking behind Link21.
- Learn why the Bay Area Council Economic Institute sees the 21-county area as an interconnected Northern California Megaregion and makes The Case for a Second Transbay Transit Crossing.
- See the California Department of Transportation's vision for rail travel in the state in the Executive Summary of the 2018 California State Rail Plan. If you prefer, you can read the full plan.
- Understand the capacity limitations of our current transit network through the transbay corridor in the Metropolitan Transportation Commission's Core Capacity Transit Study (CCTS). The CCTS identifies and prioritizes the major investments, including new BART and Regional Rail crossings, needed to address these limitations today and in the future.
- Compare the potential effectiveness of different San Francisco Bay crossings in the Metropolitan Transportation Commission's 2019 white paper Crossings: Transformative Investments for an Uncertain Future. This white paper is part of MTC's larger Horizon effort, which identified a new transbay rail crossing as the most cost-effective transit expansion megaproject in the Bay Area.