tunnels
MTA East Side Access
MTA East Side Access Project Overview New York’s East Side Access project is designed to bring the Long Island Rail Road from Queens to Grand Central Terminal in Manhattan. Because the project involves tunneling under high value real estate, designers specified that the route be closely monitored for possible settlements. Monitoring Challenges The selected locations…
Read MoreLincoln Tunnel
Lincoln Tunnel Project Overview The Ferry Terminal at Pier 79 on Manhattan’s west side was constructed just 60 feet above the three tubes of the Lincoln tunnel. The project involved driving of pipe & sheet piles for the new ferry terminal and docking facilities. Some of the pipe piles were driven within 15 feet of…
Read MoreDulles Airport
Dulles Airport Work 2003 The Automated People Mover project at Dulles International airport involved nearly two miles of tunneling. Large excavations were required for stations at the main terminal and the three mid-field terminals. The station at the main terminal involved a 50-foot cut and extensive underpinning of the terminal. Monitoring Requirements Monitor support of…
Read More