101/280 Express Lanes and Bus Project

San Francisco’s transportation system faces a critical problem: more people than ever are trying to travel to, from, and through the city. The freeways in San Francisco—US 101 and I-280—play an important role in this network, connecting San Francisco and the Peninsula. While parts of San Francisco’s freeways are critically congested, there are many empty seats in cars, vans, and buses. And demand is expected to increase: By 2040, there will be more than 100,000 additional daily trips between San Francisco and the South Bay. The Transportation Authority is studying how we can address this growing challenge. Our 2018 Freeway Corridor Management Study found that express lanes with a three-person minimum carpool requirement could help move more people in fewer vehicles along the 101 corridor. Our project team is taking this recommendation, as well as other options and an equity analysis, into subsequent study phases.

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