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. Also 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. Constructed 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. 

This project included six miles of ductbench and tunnel rehabilitation, three buildings, 800-foot long underground track structure, and rehabilitation of five offsite track ventilation facilities.

RELATED PROJECTS
ESA CH053 (Harold Structures Part 1)
ESA CH054A (Harold Structures Part 2)
ESA CH057 (Harold Structures Part 3)
ESA CH061A (Michaels – Track A Cut & Cover Structures)
ESA CM005 (Manhattan South Structures)
ESA CM006 (Manhattan North Structures)
ESA CM007 (Grand Central Terminal Caverns)
ESA CM014B (Grand Central Terminal Concourse Facility and Fit-Out)
ESA CQ031 (Queens Bored Tunnels)
ESA CQ033 (Mid Day Storage Yard)
ESA CS086 (Systems Package No. 3)
ESA CS179 (Systems Facilities Package No. 1)