Author name: Maria Mares

MUNI Sunset Tunnel Trackway Improvement Project, SFMTA #1270

The work includes replacing the existing tie and ballast tracks; replacing existing overhead catenary system (OCS), including messenger wires, trolley wires and various components.  Seismic upgrade for portal retaining walls; upgrading traction power cable infrastructure; adding a new accessible key stop at Judah and 28th Street.   New VTAG loops at nine intersections along the N-Line …

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MUNI Green Light Rail Center Track Replacement, SFMTA Contract #1249

The work is located at Curtis Green Light Rail Center (Green Facility) next to Balboa Park Station in San Francisco. Green Facility is one of Muni’s light rail vehicle maintenance and storage facilities. The purpose of this project is to replace and rehabilitate the light rail system to maintain safe and efficient operation. The scope …

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SFO Terminal Upper Level Viaduct Improvements, Phase 2

Seismic retrofit of the Upper Level Viaduct structure adjacent to SFO Terminal 3.   Work included micropile installation, pilecap extension, column casing installation, grade beam construction and expansion joint widening at sliding door locations.  This project also included incidental roadway work such as sidewalk and island demolition and reconstruction, pavement overlay, underground utility relocation/installation, exhaust fan relocation, traffic control, …

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San Francisco-Oakland Bay Bridge Toll Plaza Improvements

This project is an element of the overall enhancement of the eastern span reconstruction of the San Francisco-Oakland Bay Bridge.  Upgrading included the recladding of the canopy structure, replacing the crash cushions, removing existing pump station building, constructing a new pump station building over existing concrete slab, Stairway No. 7 removal, and painting the toll booths concrete …

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