Transit & Rail
Constructing high-speed rail corridors, commuter rail expansions, subway stations, and automated people movers worldwide.
Bringing knowledge and foresight to every project
Underground Station Caverns & Cut-and-Cover
Mining multi-floor underground passenger stations, concourses, and ventilation structures in dense urban corridors.
Systems Integration & Electrification
Installing overhead catenary systems (OCS), traction power substations, automated train control (CBTC), and third-rail electrification.
Trackwork & Guideway Construction
Laying direct-fixation slab track, ballasted continuous welded rail (CWR), and precast elevated guideway spans.
Zero-Disruption Operations Support
Coordinating major station modernizations and track cut-ins during overnight windows without suspending revenue passenger service.
Project spotlight: Second Avenue Subway Phase 1 Extension, NYC
SNS Construction excavated three massive cavern stations, installed systems and trackwork, and constructed 2 miles of twin-tube subway tunnels for New York City's landmark transit expansion.
Partnering today to build the transit systems of tomorrow
Delivering over 500 track-miles of high-speed rail, light rail, and subway networks across North America, Europe, and Asia.
