The MTA’s East Side Access project will connect the Long Island Rail Road’s (LIRR) Main and Port Washington Lines in Queens into a new LIRR terminal beneath Grand Central Terminal in Manhattan. The new connection will increase the LIRR’s capacity into Manhattan and dramatically reduce commute time for 270,000 daily passengers.
In 2006 Judlau, was part of a Joint Venture, was awarded a contract for the Manhattan Tunnels.
Judlau has bored four tunnels of approximately 25,000 linear feet using two tunnel boring machines with the capacity to bore 22-foor-diameter tunnels. These machines mined approximately 120 feet beneath Manhattan streets under numerous utilities and existing tunnels such as the No. 7 IRT Line, Lexington Avenue 59th Street Station, 60th Street BMT Lexington Avenue Station, 63rd Street Station and active Con Edison steam and power lines.
Additional work included approximately 30,000 yards of cavern excavation as well as cross passages and sumps, performed conventionally with drill and blast. Following the excavation, the tunnels and caverns will be lined with both shot Crete and cast-in-place concrete.