About: Maria Mares

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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...

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...

Flume 41 Replacement Restoration Project

Work included but not limited to: The removal of loose material and rock scaling on the uphill side of the flume, installation of rock anchors and wire mesh drapery for slope protection and drainage improvements; the stabilization of approximately 452 feet of existing flume bench including rock anchors, void grouting and shotcrete...

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...

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