Steel Expedites Replacement of Washed Out Bridge in South Dakota

Topics: Buried Bridge

Article provided by TrueNorth Steel. and the National Corrugated Steel Pipe Association

Mother Nature was relentless on South Dakota in 2019, bringing rain at unprecedented levels throughout the year. That rain led to the washing out of an old multiplate structure on the Baptist Creek in Clay County South Dakota.

TrueNorth Steel was asked to help expedite the production of twin 120″ x 86′ long 5 x 1 galvanized culverts with two 30 degree skewed headwalls. The system was made up of two, 43′ long pieces.

The corrugated steel pipe system, from TrueNorth Steel, features twin 120″ x 86′ long 5 x 1 galvanized culverts with two 30 degree skewed headwalls.

The county chose corrugated steel pipe (CSP) over other alternate products due to its ease of installation, fewer joints and the manufacturing period of the culvert was significantly shorter than concrete pipe or a precast concrete box culvert.

Delivery and installation came off without a hitch and both the contractor and county were extremely pleased with the timeliness of the project from start to finish.

To find designs similar to the multiplate structure in Clay County, the SSSBA develop a a free web-based tool that provides preliminary simple-span and modular designs for steel bridges up to 140 feet, allowing bridge owners and designers to compare steel and concrete structures and make informed choices.

The tool, eSPAN140, provides customized standard designs in less than 5-minutes.

“I have confidence in these bridge designs and details, as they were developed by university researchers who are national experts,” says Brian P. Keierleber, PE, county engineer for Buchanan County, Iowa. “eSPAN140 gives me a design I can take to a fabricator, which saves time for me and precious funds for our county.”

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