See the Transformation! Timelapse Video of Roll-In of South Tyson Avenue Bridge in Floral Park

The modernized South Tyson Avenue Bridge in Floral Park was rolled 13 feet into place over a single weekend, August 17-18. It was the third successful bridge roll-in of the summer as part of the LIRR Expansion Project.

Construction crews from 3rd Track Constructors and MTA Long Island Rail Road worked around-the-clock from late Friday night, August 16, to early Monday morning, August 19, to install the new bridge, with full service restored in time for the Monday rush hour. The new South Tyson Avenue Bridge is 65-feet long, 30-feet wide, and weighs 160 tons. It took approximately 2,000 hours for crews to construct and install the bridge, which was pushed and positioned into place with a Self-Propelled Modular Trailer (SPMT).

Extensive community outreach was conducted in Floral Park ahead of this weekend bridge push. 3TC’s Community Ambassadors to Floral Park, Judy White and Camille Koorey, went door-to-door engaging nearby residents and business owners to ensure all were aware of planned traffic detours and what to expect throughout the weekend.

The South Tyson Avenue Bridge, located at the junction of the LIRR Main Line and Hempstead Branch, is at the western-most edge of the project corridor, where the third track will begin. Four tracks funnel into a two-track segment of the Main Line at this location, causing delays which can ripple throughout the LIRR system. The modernized South Tyson Avenue Bridge brings the LIRR one step closer to delivering a modernized Main Line to benefit the 107,000 commuters who travel across the bridge every day.

The LIRR Expansion Project Floral Park to Hicksville will add a third track from Floral Park to Hicksville, reducing train congestion and delays and enabling true bi-directional service during peak hours. This transformative work includes several related projects, including the construction of additional parking garages and improved station access, retaining and sound attenuation walls, improvements to rail bridges and the removal of the eight street-level railroad crossings in the corridor. Construction is being handled to minimize the impact on daily routines, with extensive mitigation and public outreach efforts in local communities.

The LIRR Expansion Project is part of a multibillion-dollar modernization of the Long Island Rail Road, the largest investment the railroad has received in decades. Once the work is complete, the LIRR will have increased its capacity by about 50 percent. Together, the upgrades will help transform transportation across the region and provide a reliable, state-of-the-art rail system for Long Islanders. For more information and photos of ongoing construction, please visit the LIRR Expansion Project Floral Park to Hicksville project page on