Bay Bridge Forward

Bay Bridge Forward is a set of investments and strategies to improve efficiency, reduce delays and move more people and buses across the most-traveled bridge in the Bay Area.

Heavy traffic along the Interstate 80 and Interstate 580 corridors affects transit operations near the San Francisco-Oakland Bay Bridge. Bay Bridge Forward includes a suite of projects to improve transit travel time and reliability, and promote carpooling and transit ridership, all while reducing greenhouse gas emissions. Here are some projects MTC has been working on:

Operational Improvements

Interstate 80 Design Alternative Assessment (DAA)

A design alternative assessment will be conducted to address traffic congestion for the I-80 corridor in Alameda and Contra Costa Counties between the Carquinez Bridge and the San Francisco-Oakland Bay Bridge. The assessment will produce ideas to improve higher occupancy modes of travel, such as express buses and carpools.

Interstate 80/Powell Street Interchange Transit Access Improvements

This project will modify the I-80/Powell Street interchange in Emeryville to decrease travel time and increase reliability for transit vehicles that enter I-80 westbound and exit I-80 eastbound via Powell Street. Proposed transit access improvements to this interchange include providing bus queue jump lanes, exclusive bus-only turn lanes, transit signal priorities, and new and/or improved bus stops at the interchange vicinity.

Interstate 80 Westbound Bus/HOV Lane Extension

The right shoulder will be converted to a bus/HOV lane from the I-80 Powell Street westbound diagonal on-ramp to connect with the existing bus/HOV lane at the toll plaza approach (the HOV fly-over direct connector), a distance of approximately 1,800 feet.

Interstate 580 Westbound Bus/HOV Lane Extension

A general purpose lane will be converted to a bus/HOV lane from the Interstate 980/State Route 24 interchange to connect with the existing bus/HOV lane at the toll plaza approach (just west of the MacArthur maze), a distance of approximately 1.5 miles.

HOV Lane Improvements

Along the Interstate 80 corridor in Alameda and Contra Costa counties, additional signage and road striping will be added at key locations to improve HOV lane operations and reduce HOV lane violations.

Improved Technology

New technology will be used to improve transit operations, and to encourage travelers to shift to vehicles with higher occupancy.

Toll Plaza Hours of Operation

An evaluation will be conducted to determine if toll plaza hours should be changed (for example, to all-day operations or to cover the typical duration of congestion).

West Grand Ave Bus/HOV Lane Extension

The shoulder along the Bay Bridge on-ramp in Oakland was converted to a bus/HOV lane (completed in 2019). Further improvements will be made when the existing westbound right shoulder on West Grand Ave between the Interstate 580 Eastbound on-ramp and the intersection of West Grand Ave with Frontage Road is converted to a bus/HOV lane.

Additionally, a multi-use path for bicyclists and pedestrians will be constructed on eastbound West Grand Ave between Maritime Street and Mandela Parkway.

Shared Commutes & Mobility Strategies

Bike Shuttle Program

The existing Bay Bridge Bike Shuttle program will be expanded, potentially increasing service frequency, and providing additional pick up and drop off locations.

Commuter Parking Lots

Additional commuter parking lots will be added along the Interstate 580 and Interstate 80 corridors in the East Bay. Potential sites have been previously identified as part of the I-580 Design Alternative Assessment and the West Contra Costa County Express Bus Implementation plan, and will be evaluated further for implementation.

New Express Bus Service

AC Transit, and/or Western Contra Costa Transit Authority will pilot new transbay routes between the East Bay and San Francisco.


Working with employers, the MTC SHIFT Program provides grants that support programs to reduce drive-alone rates.

Improvements from the 2016 Bay Bridge Forward Initiative

Bryant St. On-Ramp

Pilot various enforcement methods to reduce HOV violations.

Casual Carpool

Establish casual carpooling pick-up locations at key locations in San Francisco and along Interstate 80 in the East Bay.

Commuter Parking

Establish commuter parking in the East Bay to encourage carpool and express bus ridership. See details about Pivot Point Commuter Hubs.

Flexible On-Demand Transit

Provide on-demand transit services from the East Bay to job centers outside of downtown San Francisco that are not well-served by transit.

Higher Capacity/Increased Express Bus Service

Retrofit buses and increase frequencies on impacted AC Transit transbay routes, and add double-decker buses on the most productive AC Transit and WestCAT Transbay express bus routes.

Higher Frequency Ferry Service

Increase service frequencies on the Alameda, Oakland and Vallejo routes.

Integrated Bridge Corridor

Integrate and optimize traffic management systems at all bridge approaches.

Pilot Express Bus Routes

Pilot new AC Transit Transbay routes to serve increasing demand from inner East Bay residents.

Shared Mobility

Continue zero-dollar partnerships with shared mobility providers to take advantage of emerging carpooling, vanpool and transit services.

Transit Signal Priority

Give buses priority at traffic signals on the West Grand Avenue approach to the Bay Bridge.

West Grand HOV/Bus Only Lane

Convert a shoulder of West Grand Avenue on-ramp in Oakland to a bus/high-occupancy vehicle (HOV) lane to enable buses and HOVs direct access to the toll plaza.

Bay Bridge Forward Project Map

Map indicating location of Bay Bridge Forward projects

West Grand Avenue Project Map

West Grand Ave. Bus/HOV Lane Extension project map.

Staff Contact

Kevin Chen, Design and Project Delivery
Phone: (415) 778-5338