Thursday, June 20, 2019 from 6:00 PM to 8:30 PM PDT
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Sir Francis Drake Hotel - Walnut/ Empire Room

450 Powell St., San Francisco, CA 94102

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Joyce Cheung 
ASCE Golden Gate Branch 

ASCE Golden Gate Branch and SEI-SF
June 2019 Dinner Program

Bay Bridge Bike Path - West Span

Program Details:

ASCE's Golden Gate Branch and Structural Engineering Institute will be hosting a joint meeting this month. Rafael Manzanarez from Arup and Peter Lee from BATA will present the Preliminary Engineering Design for a Bike/Ped/Maintenance Access Path on the West Span of the San Francisco-Oakland Bay Bridge. Attendees will have the opportunity to interactively experience this exciting project in Virtual Reality!

The Bay Area Toll Authority (BATA) has been leading the effort to add a multi-use pathway on the West Span of the Bay Bridge to connect to the existing East Span path and provide a continuous bike/pedestrian route from Oakland to San Francisco. The project will improve community access from San Francisco to Yerba Buena/Treasure Islands and Oakland, and will reduce traffic congestion by providing a commuting alternative and facilitating maintenance access that will reduce lane closures. The West Span path will require connections to downtown San Francisco and to the East Span path landing at Yerba Buena Island. Many alignment alternatives and structural types were evaluated in the concept phase, and were narrowed down to two options for further study during the Preliminary Engineering. Come to this meeting to learn about the planning and engineering challenges of these options!

The recommended path design in the suspension spans is a 15 ft wide steel deck, located at same level of the top roadway, cantilevering off the north side trusses, and supported by steel inverted L brackets (30 ft on centers) that are connected to the top and bottom joints of the West Span suspension trusses.  A load rating evaluation of the West Span was performed in accordance with FHWA requirements to evaluate its structural capacity against modern truck loads and understand the effect of future modifications to the bridge, including the addition of the proposed bike path. The stability of the bridge under wind effects with and without the new path was studied using computational fluid dynamic (CFD) techniques. 


Sir Francis Drake Hotel, 450 Powell St, San Francisco, CA 94102

- Networking: 6:00 - 6:30pm at the Walnut Room (2nd Floor)

- Dinner and Presentation: 6:30 - 8:30pm at the Empire Ballroom (2nd Floor)



Peter Lee, Assistant Director, Operations, BATA. 

Rafael Manzanarez, Principal, Arup: Rafael leads the Bridge Civil Structures team in the San Francisco office, with over 39 years of experience, having served as Design Manager/Technical Director for many large bridge project including: the new Gerald Desmond Bridge, Long Beach, the new East Spans of the SFOBB; the Seismic and Wind Retrofit of the Golden Gate Bridge.

Note: Registration will remain open until the day of the event, but please register by Friday June 14th so we can secure your meal selection!


Sir Francis Drake Hotel, 450 Powell St, San Francisco, CA 94102