Rail & Transit Engineering

The $2.6 Billion Third Track expansion includes 50 projects to modernize 9.8 miles along the congested Main Line of the LIRR between Floral Park and Hicksville. Those projects include adding a third track, eliminating all seven street level grade crossings within the project corridor, adding new power substations and parking, and modernizing track and signal infrastructure. Project elements along the Main Line corridor include 9.8 miles of a new third track, 7 grade crossing eliminations, 7 bridge replacements and modifications, 5 station improvements, 7 substation replacements, and 7.5 miles of sound/retaining walls.

Garg is providing Independent Technical Reviews and structural designs for this expansion.

Independent technical review provided a fresh set of eyes to confirm that designs adhered to LIRR standards and formats:
- Track and Signal Routing (TSR), including the speed command logic, conformity of the position of the Master Locations to the TSRs, and proper application of LIRR Signal Engineering Operations Manual (SEOM) rules.
- Signal Power designs.
- Traction Power Third Rail designs.

Structural responsibilities included the design and constructibility review of:
- Mineola Station – design of (4) stair towers supporting (2) pedestrian overpasses (designed by others), including (2) elevator shafts support and housing for various railroad utilities.
- Westbury Station – design of (4) stair towers supporting (2) pedestrian overpasses (designed by others), including (2) elevator shafts support and housing for various railroad utilities.
- Willis Avenue – design of (2) stair towers supporting a pedestrian overpass (designed by others).