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This project consisted of the temporary construction of power; tunnel ventilation; tunnel drainage; water supply; lighting; dewatering systems; and barriers, guiderails, handrails, and fencing within the work area.ÌýAlso included was the maintenance and protection of vehicular and pedestrian traffic; Amtrak; New Jersey Transit; Long Island Railroad; New York and Atlantic Railroad traffic and infrastructure; geotechnical instrumentation; groundwater monitoring wells; overhead conveyors and power lines; signal troughs; and duct banks. The project also included rehabilitation and modification of five railroad facilities which included demolition; design and construction of excavation support; relocation of utilities; architectural features; and mechanical equipment.ÌýConstructed were five Con Edison power manholes; below-grade interlocking structures; pump rooms; ventilation shafts; signal, switchgear, instrument, and mechanical rooms; power substations; above-grade substations; structures; and architectural finishes.Ìý

This project included six miles of ductbench and tunnel rehabilitation, three buildings,Ìý800-foot long underground track structure, and rehabilitation ofÌýfive offsite track ventilation facilities.

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