East Side Access, a $7 billion MTA project underway in NYC, will connect the Long Island Rail Road’s (LIRR) Main and Port Washington lines in Queens to a new LIRR terminal beneath Grand Central Terminal in Manhattan. The new connection will increase the LIRR’s capacity into Manhattan, shorten travel time for commuters, and provide a new commuter rail station in Sunnyside, Queens and under the Grand Central Terminal.  To support the new connection, Tectonic provided structural engineering and special inspection services on a multi-year contract for various phases including the Manhattan Tunnel, Harold Interlocking Structures and Grand Central Station. Construction design support services included structural and geotechnical design of temporary facilities including preparation of footing design plans for conveyor system to disposal of tunnel muck that included an enclosed steel truss spanning 120 ft. across Northern Boulevard.