By: TrueNorth Steel
Pennington County in Wall, SD reconstructed the layout of a road and needed a culvert option that could accommodate the change. They initially looked into using reinforced concrete pipe (RCP) for this project, but they weren’t able to find a fabricator that would be able to complete the proj 
ect on time. They then reached out to TrueNorth Steel and were given the solution of using spiral rib corrugated steel pipe (CSP) rather than concrete. During their consultation regarding the benefits of switching materials, they learned that RCP and CSP have equal Manning’s n flow. Additionally, CSP was more readily available than RCP at the time. Not only could TrueNorth Steel offer a product that still met their needs, but could also complete the project within the county department’s desired timeframe. Pennington County ultimately chose TrueNorth Steel to create and install over 450 feet of poly-coated corrugated steel pipe, which was arched to meet their road depth needs. This solution provided the customer with a successful project that not only met their expectations but also fit their scheduling needs.
This project was completed in September of 2022, ahead of the county’s schedule, and ended up saving the county money by remaining under budget.