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East Side Access - Northern Bouelvard Crossing

Design of the tunnel crossing the Northern Boulevard and of the elements supporting the Sunnyside Yard cut and cover walls (i.e. internal steel bracing and tiebacks).
Estimated cost: Commencement:
April 01, 2007
Completion date:
January 01, 2012
Northern Bouelvard Crossing
New York City, NY 11354
United States
Technical data:
Geology description:

Soft ground with cobbles and boulders overlying Manhattan schist. Groundwater table at the surface at Sunnyside Yard.

Geology types:
Bid cost: Final cost:
$168 million USD
Service areas:
Construction methods:
Tunneling under:

The East Side Access (ESA) project provides new Long Island Rail Road service to the east side of Manhattan, supplementing existing service to Penn Station on Manhattan's west side and Atlantic Terminal in Brooklyn. ESA will serve approximately 162,000 customers a day, providing a faster and easier commute to the east side of Manhattan in a new 8-track terminal and concourse below Grand Central Terminal. The project encompasses more than 13 km of tunnelling.

East Side Access project overview (
3D Visualisation of the Northern Boulevard crossing tunnel design