Overview
The MTA’s $11.1 billion Grand Central Madison project is one of the largest and most complex transportation projects ever undertaken in New York City. LiRo-Hill was tasked with constructability reviews, construction management services, construction inspection, operations coordination, force account coordination, design review services, change order management, cost estimating and scheduling, accounting services, and BIM services.
About the Project
This major project links the Long Island Railroad (LIRR) Main Line and Port Washington branch to a new terminal under Grand Central Terminal, allowing riders easy access between the LIRR, the East Side of Manhattan, and Metro-North Railroad.
The project included seven miles of tunneling in Manhattan and Queens, emerging into one of the busiest rail interlockings and multi-track main lines in the country. The new excavation connected the existing 63rd Street tunnel under the East River in a one-mile dig and blasting effort that removed nearly 400,000 cy of rock. The project also included construction of five ventilation buildings and a new transportation terminal 135 ft below Grand Central Terminal.
Our BIM-related services encompass a wide range of solutions, including the development of BIM standards and BIM-driven asset management specifications. We provide design visualizations, walk-through animations, and renderings to assist in the design process. Additionally, we offer support for the bid process, 4D sequencing, and virtual mock-ups. Our BIM-enabled project controls include custom BIM-integrated construction progress tracking applications and data-integrated analytics dashboards for reporting. We also offer support for project closeout, handover, and asset management deliverables. Finally, we provide LiDAR scanning services to ensure the most accurate data is captured for project success.
Project Challenges & Solutions
Extensive improvements were done in Queens that were integral to the functionality of the project. Included in this effort were: a new passenger station at Sunnyside, Queens, train storage facilities, 50,000 ft of track, a reconfigured Harold Interlocking, and systems components including signals, communications, power, and security. This work required extraordinary coordination efforts from our field personnel.
The rail operations of both LIRR and Amtrak make Harold Interlocking the busiest rail interchange in the United States, which presented unique challenges when undertaking construction activities amidst constant train activity. In this multi-stakeholder environment, LiRo-Hill developed positive relationships while coordinating each construction activity with rail operations personnel. This coordination extended to the Amtrak and LIRR Force Account construction activities that occurred in support of the project. LiRo-Hill monitored each railroad’s progress for this critical work and coordinated the interfaces with the contractor to ensure that additional track outages and interferences were not required for the same areas. This work was done in accordance with railroad and contractor labor agreements as well as the operating rules and procedures for both Amtrak and LIRR.
LiRo-Hill’s VDCO team was brought onto the project in 2012 to implement a comprehensive BIM program aimed at supporting some of the most complex contracts. At the time, the project was represented by thousands of fragmented 2D design drawings. LiRo-Hill’s task was to create a centralized, 3D, data-driven solution—essentially a BIM model of the entire project, which was likely the largest of its kind at the time. Using this model and their expertise, we provided crucial support to both the Construction Manager (CM) and Contractor teams throughout the entire project lifecycle. At the start of the project, we played a key role in establishing the BIM framework and defining responsibilities for the various stakeholders. As the project moved into the construction phase, they worked closely with the Contractor to ensure compliance with industry BIM standards.
Outcome
There is now an increased passenger capacity for rail commuters, reduced travel time to the east side of Manhattan, and increased regional rail flexibility, allowing riders seamless access to both the Long Island Rail Road (LIRR) from the eastern suburbs of New York City and Metro-North Railroad (MNR) passenger stations to the north of Manhattan.
