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 route.  Other miscellaneous scope includes upgrades to the curve signal system, fire standpipe valves, cleaning the drain lines and painting the portals.

Location: San Francisco, California
Start Date: May 2014
Completion Date: December 2015
Contract Value: $16,123,000
Owner: San Francisco Municipal Transportation Agency
Engineer: San Francisco Municipal Transportation Agency



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