LIRR – Third Track Expansion Design-Build

Services:
- Detailed inspections
- Ensuring that the contractors’ work confirmed to the project documents including RFP, contract plans, NYSDOT specifications, and other related documents
- Verifying that that contractors were properly installing equipment and systems according to the approved drawings, specifications, and procedures
Relevance:
- Reducing traffic congestion both on the roads and on the Long Island Rail Road main line by providing a more reliable alternative for Long Island commuters
Construction Value:
- $2.2 Billion

Project Overview

Role: Construction Quality Control Services

M&J Engineering D.P.C. (M&J), under contract #6240, provided independent construction quality control services to 3rd Track Constructors (3TC) on this $1.8 billion megaproject. The third track expansion project aimed to reduce traffic congestion both on the roads and on the main line by providing a more reliable alternative for Long Island commuters. The project consisted of the construction of a third track on the main line between the Floral Park and Hicksville train stations. The new track construction allows for bi-directional service. During peak demand, this new track increases the capacity of the LIRR while providing improvements to the environment, safety, and local community quality of life.

This project focused on:

Construction of the third track along the main line utilizing LIRR right-of-way property to avoid residential relocations and require less commercial land acquisition
Reduction of roadway delays and noise by eliminating seven street-level grade crossings
Improvements and modernization to railroad infrastructure such as signal systems, power substations, culverts, and switches
Seven grade cross eliminations to add new three-bay railroad bridges to fit the third track
Construction of new multi-story parking garages at stations
Installation of sound attenuation walls to reduce noise levels throughout residential areas
Renovations of passenger rail stations, including ADA accessibility and longer platforms (including the addition of new elevators and in some stations new escalators

LIRR – Third Track Expansion Design-Build

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