Streamlining delivery of a $2.6bn infrastructure modernisation project for the MTA Long Island Rail Road

Increasing rail capacity by 50% with a third line

Launched in early 2018, the LIRR Expansion Project focused on modernising the rail road’s central artery — a 10-mile segment of the Main Line extending from Floral Park to Hicksville that is responsible for carrying 41% of LIRR’s daily ridership. The $2.6 billion project provided a third track along this heavily trafficked segment, increasing its capacity by roughly 50% in anticipation of future growth, as well as alleviating congestion during peak periods, improving service, and enhancing safety and comfort. The project also involved reconstruction of five stations, seven bridge replacements, six new pedestrian bridges, three bridge expansions to accommodate the new third track, the elimination of eight dangerous at-grade crossings, and the upgrade of all rail infrastructure and systems.

To ensure the rapid delivery of this critical regional infrastructure project, Metropolitan Transportation Authority Construction & Development (MTA C&D) selected a design build delivery model—a first for the agency. An Arup-led joint venture with Jacobs Civil Consultants Engineering (AJJV) served as the MTA C&D’s Project Management Consultant, providing comprehensive project management oversight of the design-builder, 3rd Track Constructors (3TC). In this role, AJJV led a project management consultant team comprised of 20+ companies responsible for commercial, risk, public outreach, rail operations and digital information management. We were also responsible for compliance oversight of design, construction, quality, safety and security. AJJV and their subcontractors formed an integrated Project Management Team (PMT) with MTA C&D, LIRR, and New York State Department of Transportation (DOT) staff collocated at a project office in Westbury, Long Island for the duration of the project. 

The LIRR Expansion Project serves as a prototype for future MTA C&D projects delivered on highly condensed schedules using alternative delivery methods. To aid the agency in establishing best practices, AJJV introduced a range of customized digital tools and workflows designed to improve transparency, streamline information sharing, measure performance, and enhance overall coordination.

All critical milestones were delivered on time and on budget — a rarity on a project of this scale and complexity.

Promoting efficiency in project management

Located in a dense urban environment and involving a wide array of public and private stakeholders, diverse technical and compliance requirements and strict deadline and budget benchmarks, the LIRR Expansion Project is a complex and challenging undertaking. AJJV understood from the outset that effective management of a design build project of this magnitude would hinge on clearly delineating project goals and responsibilities and putting systems in place to support close coordination, clear communication, ongoing monitoring, and accountability.