Dyer Street Archcast™ Bridge

Dyer Street Archcast™ Bridge

After a devastating flood hit the city of Waynesville, Missouri in 2013, city officials knew there was major work to be done, including vital infrastructure upgrades to prevent another disaster. In all, the flood damaged nearly 100 homes and businesses in the small town. Reports indicated at least seven inches of rain fell on the area causing the Roubidoux creek running through Waynesville to reach a record 21 feet, after only having about one foot of water before the rain.

One of the infrastructure upgrades was the replacement of a low-water crossing structure by Dyer Street, which connected a city street to the main road. The original low-water crossing had dammed up a branch of the Roubidoux creek for decades, increasing the likelihood and intensity of flooding. Because of the major impact floods had on the region, state and federal agencies including the Missouri State Emergency Management Agency and Federal Emergency Management Agency coordinated recovery and infrastructure upgrades for the project.

The new Dyer Street bridge was constructed with ArchCast™, a precast concrete bridge system manufactured by County Materials Corporation. The city selected County Materials’ ArchCast™ bridge system for its highly durable and simple three-sided design that is delivered ready for quick installation. Additionally, because of budget constraints, city officials decided the best option for saving costs was to build the bridge using their own crews. “The Dyer Street Bridge was a great ‘do it yourself’ project for the City of Waynesville,” said Bruce Harrill, City Administrator. “Working with County Materials and their knowledgeable technical personnel they provided to the site allowed our city crews to use the modular ArchCast™ design to construct the much-needed bridge while saving the city hundreds of thousands in construction costs.”

The Dyer Street Bridge is constructed of twelve 28-foot span by 11-foot rise ArchCast™ units, erected side-by-side to create two spans, each six arches wide. City crews built footings onsite while the precast bridge components were being manufactured at County Materials’ plant in Salem, IL. After the footings were completed, the precast units were delivered to the site. Once the arch units were in place, precast head and wingwalls were installed to complete the bridge. The convenient modular design allowed city crews to quickly erect the bridge in only three days.

The creek is already in the process of reshaping the natural stream bottom after the September 2016 completion. City Mayor Luge Hardman praised all who were involved with the upgrades to the city by saying, “This was an amazing project for a small city, and we were able to do it with the help of SEMA, FEMA, County Materials and our city construction crews, saving the city thousands of dollars.” She added, “With the building of the Dyer Street Bridge, we are proud to say the city has no low-water crossings remaining, and is better prepared to meet future water levels.”


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