Side-by-side tunnels are part of the construction plan for the...

Side-by-side tunnels are part of the construction plan for the East Side Access tunnel shown on May 4, 2011. Credit: Patrick E. McCarthy

The MTA says it is aiming to shave more than two years' work off its massive East Side Access project after renegotiating a $1.2-billion pact with its biggest contractor.

Agency officials warned, however, that the $7.4-billion project linking the Long Island Rail Road to Grand Central Terminal still could face significant delays because of complications from Amtrak's separate, competing rehabilitation of the four East River tunnels, reports Newsday's Alfonso Castillo.

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After 47 years, affordable housing ... Let's Go: Williamsburg winter village ... Get the latest news and more great videos at NewsdayTV

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After 47 years, affordable housing ... Let's Go: Williamsburg winter village ... Get the latest news and more great videos at NewsdayTV

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