New Millennium Building Systems is a wholly-owned subsidiary of Steel Dynamics Inc. (SDI), headquartered in Fort Wayne, Indiana. Founded in 1999 in Butler, Indiana, the company engineers and fabricates steel building systems and components for use in low-rise and multi-story commercial construction projects. It operates seven state-of-the-art manufacturing facilities across North America.
The company's product range includes structural steel joists and joist girders, composite joists, special profile joists, and a comprehensive line of steel deck solutions. Its steel deck offerings span roof deck, architectural deck, composite deck, form deck, and bridge deck applications.
New Millennium Building Systems operates under a core principle of "Building Success Together," emphasizing a collaborative approach to supporting customers throughout every stage of a steel building project. The company identifies a culture of innovation as central to its operations in the commercial construction sector.






