(563) 880-9138 Structures Progressives Structures, LLC formed a concrete crew in 2013. The concrete crew began placing cast-in-place intakes and manholes. However, as the company grew, the crew has expanded its scope of work to cast-in-place flumes, box culverts, and retaining walls. Intakes/Manholes Flumes/Box Culverts Satisfying demand for underground and structural projects since 2010. Call today! About Us Services Employment Contact Employee Resources Copyright © 2021 Progressive Structures