7 Line Extension - Running Tunnels & Station Structures Design-Build
Highlights
12,000 feet
of new tunnels mined
Project information
This project extended the No. 7 Subway Line by constructing new 22‑foot‑diameter, concrete, segmentally lined TBM tunnels through rock and mixed face. The scope also included building an underground station at 34th Street, lowering existing tracks at Times Square Station by nearly 7 feet and performing extensive underpinning of the 8th Avenue Subway Line. Extension work was completed five months ahead of schedule and under budget.
Client:
AECOM, MTA Construction and Development
Service:
General Contractor
Market segment:
Railways, Tunnels, Subway
Start date:
Completion date:
City:
New York
State:
New York
Country:
USA
Cost:
$1,145,138,380
Contact
Infrastructure
Meagan Smyth
Director, Business Development & Proposals - Northeast