Halmar International

ConstructionNew York, United States201-500 Employees

Halmar International is a U.S.-based construction company located at 421 East Route 59, Nanuet, New York 10954, United States, and employs 201 to 500 people. The firm specializes in transportation infrastructure and related heavy construction, delivering projects for mass transit, highways, bridges, underground works, aviation facilities, and vertical construction. With a history spanning more than six decades, Halmar International joined the ASTM Group in 2017, aligning with a major road concessionaire known for engineering, construction, and design services. In 2025, Halmar International signed a contract to design and build two tunnels for the Metropolitan Transportation Authority as part of the Connect Plus Partners consortium with FCC Construction. The company has previously engaged in design-build collaborations to advance New York-area rail projects, including a 2022 partnership with RailWorks Corp. to connect Penn Station to Metro-North via the Hell Gate Line.

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