Transportation
· 19th Avenue / M Ocean View Project - MSA is providing preliminary structural and construction engineering services to assess feasibility of earlier planning studies and develop new light rail subway and bridge options.
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· Transbay Transit Center (TTC) Bus Storage Facility (BSF) - MSA provided conceptual structural and construction engineering services to assess feasibility of earlier studies for both AC Transit and Golden Gate Transit storage sites located under the West Approach to the San Francisco Oakland Bay Bridge (WA-SFOBB). Assessment and new alternative development was followed by preliminary engineering for AC Transit storage site and the bus link ramp to the TTC, which included: working collaboratively with the geotechnical consultant to develop design strategies for storage lot excavation and BSF structure foundations that minimized impact on Seismic Performance and Post-Earthquake recovery of the WA-SFOBB. Solution included a seismically isolated Bus Link Ramp Bridge, mechanically stabilized embankments (MSE), MSE retaining walls, and aesthetic sound absorbing walls. Preliminary design and seismic impact assessment underwent Caltrans PEER Review and approval.
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· Geary Corridor Bus Rapid Transit - Environmental Impact Statement Report - MSA provided conceptual civil, structural and construction engineering services to assess the feasibility of earlier studies and develop new alternatives for surface bus rapid transit. Additionally, special studies at the grade separated intersections at Masonic, Steiner, Fillmore, Webster and downtown were undertaken. Design solutions considered the possibility of future rail as well as future significant utility upgrades. Cost constraints necessitated analysis of a range of phased implementation options for near-term and long-term improvements. MSA also worked collaboratively with the project team in its community outreach efforts.
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· Balboa Park Station Capacity and Conceptual Engineering - MSA provided conceptual civil and structural engineering services evaluating the feasibility of the preceding station area plan, and developed new options for a range of potential future projects that aimed to provide improved multi-modal access, as well as opportunities for Transit Oriented Development, including: alternative Ocean and Geneva Bridge and Freeway Ramp configurations, Station Kiss and Ride area concepts, options to proved accessible light rail platforms and connections to the Bart Station mezzanine, concepts for air-rights development structures over I-280, SFMTA Green Yard and Upper Yard. Solutions were evaluated and sorted to create a phased implementation plan for near term action and future planning.
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· South Access to the Golden Gate Bridge - Doyle Drive (Presidio Parkway) - Environmental Impact Statement Report - Conceptual structural engineering and task management services for the production of the final Caltrans Advanced Planning Study for bridges, tunnels and retaining structures in collaboration with the prime and sub-consultant project team. Additionally, MSA provided technical briefings to the Final Design Team, lead by Caltrans and the FHWA auditors of the project cost estimate.
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· Yerba Buena Island Transition Structure - Value Engineering - MSA developed a VE concept and proposal to remove and replace the YBI viaduct which was adopted.
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