LIRR Main Line Expansion

This transformative $2.6 billion project goes beyond constructing a much-needed third track to enable more robust and reliable rail service.

The LIRR’s Main Line is the central artery of the commuter rail system in Nassau and Suffolk Counties. The 9.8-mile section of the Main Line between Floral Park and Hicksville services the Hempstead, Ronkonkoma, Oyster Bay, and Port Jefferson Branches, as well as some Montauk Branch trains. But bottlenecks on this portion of the line have for decades led to delays across the entire LIRR system.

The project includes the elimination of eight street-level grade crossings, modifications to seven rail bridges, installation of sound and retaining walls throughout the corridor to reduce train noise, ADA improvements and enhanced stations, new substations, new parking facilities, landscaping, and more.

This results in reduced train congestion and delays, true bi-directional service during peak hours, and a more reliable rail network. It will improve commutes and safety for over 300,000 daily riders LIRR system-wide. The project will make living and working on Long Island easier, ensuring the region’s economic prosperity now and for the next century.