Project Overview

The South Tyson Avenue Bridge, located in the Village of Floral Park along the LIRR Main Line, is a steel through-girder bridge that spans over South Tyson Avenue; the Floral Park Viaduct is an adjacent elevated concrete structure supported by concrete column piers located west of South Tyson Avenue. The bridge, in service since 1958, has been modified, and a new two-track bay bridge was installed in a single weekend, August 17-18, to address an existing Main Line bottleneck – where four tracks merge into two – to create room for a new third track. The new third track will originate from the Hempstead Branch, then merge with the Main Line east of South Tyson Avenue to accommodate a future increase in capacity on the Main Line.

The Floral Park Viaduct has two separate components, one serving the Main Line, the other serving the Hempstead Branch, and both the Floral Park Viaduct and the South Tyson Avenue Bridge have been widened to accommodate the new third track. The bridge was replaced using the method successfully employed at LIRR’s Post Avenue Bridge in Westbury, which was completed with limited disruption to train and road traffic, over a single weekend in October 2017.

Residents and commuters along the Main Line corridor have long sought a mass transit solution to reduce road congestion, improve safety and provide an appealing alternative to driving – all with minimal disruption to existing train services and without residential property takings. The construction of a third track from Floral Park to Hicksville will reduce train congestion and delays and enable true bi-directional service during peak hours with a more reliable rail network. This transformative work includes several related projects, including the construction of up additional parking garages, retaining walls, improvements to rail bridges and the removal of eight street-level grade crossings.

SEE IT: LIRR Expansion Project 2019 Major Milestones

By | Cherry Lane Bridge, Covert Avenue Grade Crossing, LIRR Expansion Project, Nassau Boulevard Bridge, South Tyson Avenue Bridge, Urban Avenue Grade Crossing

The MTA LIRR Expansion Project Floral Park to Hicksville team had a busy 2019! Here’s a timelapse video of the major milestones completed this year: “We have four more existing bridges to replace and six more at-grade crossings to eliminate over the next 35 months,” said MTA Chief Development Officer…

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

By | LIRR Expansion Project, South Tyson Avenue Bridge

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…

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S Tyson Canvassing 1

Reaching Out: Floral Park Community Kept in the Loop By LIRR Expansion Team Ahead of South Tyson Bridge Work

By | LIRR Expansion Project, South Tyson Avenue Bridge

As part of the LIRR and 3TC project team’s commitment to community engagement, Dan Hannan, a safety team member with 3TC, canvassed Floral Park and spoke with local community members about the upcoming construction work, ensuring they knew what to expect when the bridge was installed this past weekend.  Dan…

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South Tyson Avenue Bridge Modification 08-19-19

New South Tyson Avenue Bridge Successfully Installed during Weekend of August 17-18 in Floral Park

By | LIRR Expansion Project, South Tyson Avenue Bridge

The South Tyson Avenue Bridge in the Village of Floral Park was lifted and rolled 13 feet into place in a remarkable feat of engineering during a double track outage on the Hempstead Branch over the weekend of August 17-18. Crews worked around the clock through searing heat and humidity…

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South Tyson Bridge - 08-14-19

Hempstead Branch Service Changes Weekend of August 17-18 during Installation of South Tyson Avenue Bridge in Floral Park

By | LIRR Expansion Project, South Tyson Avenue Bridge

The South Tyson Avenue Bridge in the Village of Floral Park will be lifted and rolled 13 feet into place during a double track outage on the Hempstead Branch over the weekend of August 17th and 18th, with full service to be restored for Monday morning peak service on August…

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LIRR Expansion Project Coordinates with Floral Park – Bellerose School District

By | Floral Park Station, LIRR Expansion Project, South Tyson Avenue Bridge

The LIRR Expansion Project team continues its robust coordination with school districts throughout the project corridor. Throughout the project, the team has worked closely with Floral Park – Bellerose School District officials, given the proximity of John Lewis Childs Elementary School to the South Tyson Avenue Bridge replacement project. Collaboration…

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Floral Park Coordination - 06-27-19

LIRR Expansion Project Team Working Closely with Floral Park Officials

By | Floral Park Parking Re-Surfacing, Floral Park Station, Floral Park Substation, LIRR Expansion Project, Plainfield Avenue Bridge, South Tyson Avenue Bridge

The LIRR Expansion Project team continues to work closely with officials from Floral Park as construction activities continue in the Village. The project team recently held a productive coordination meeting with the Mayor and Village officials to discuss several ongoing items, including: installation of retaining walls air quality monitoring coordination…

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