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 from late Friday evening until early Monday morning to complete the roll-in of the new two-track bay bridge to create room for a new third track, keeping the LIRR Expansion Project itself on time and on budget. Full service was restored on the Hempstead branch by Monday morning peak service on August 19.
The new South Tyson Avenue Bridge is 65’ long and 30’ wide and weighs 160 tons. It took approximately 2000 hours for crews to construct and install the bridge – the bridge was pushed and positioned into place with a Self-Propelled Modular Trailer (SPMT). The bridge spans South Tyson Avenue adjacent to the Floral Park Viaduct, an elevated concrete structure supported by concrete column piers west of South Tyson Avenue. The new third track will originate from the Hempstead Branch (the Viaduct), then merge with the Main Line east of South Tyson Avenue – the new South Tyson Avenue Bridge will carry these tracks from the viaduct to the new third track to accommodate a future increase in capacity on the Main Line. Both the bridge and the viaduct have been widened to accommodate the new third track. 107,000 commuters will pass over the bridge each day on 250 trains. The entire project is expected to be completed in September 2019.
For more information and construction photos, please visit the South Tyson Avenue Bridge Modification project page on AModernLI.com – http://www.amodernli.com/project/south-tyson-avenue-bridge-modification/.
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 in a way to minimize the impact on daily routines, with extensive mitigation and public outreach efforts to 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 roughly 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 AModernLI.com – http://www.amodernli.com/project/thirdtrack/.