Steel Dynamics Structural Rail Division

North America’s Optimized Supplier of Structural Steel and Rail

Commissioned in 2002 and located in Columbia City, Indiana, Steel Dynamics Structural and Rail Division is SDI’s third largest steel operation and we proudly serve the structural and rail markets. With an annual steelmaking capacity of 2.6 million tons, shorter rolling cycles, and the most operationally flexible mill in North America, we offer the shortest lead times and can accommodate the most challenging projects. But it is our can-do culture and the relationships we build that put our unique operational advantages to work for you. American owned and made from American recycled steel.