Coler Street Bridge Replacement

Allgeier Martin was selected to complete the design engineering services for a low-water structure through Morse Park in Neosho. The project posed several design challenges, which required specialized engineering solutions. The bridge and connected roadways are in a floodplain, making the road inaccessible during minor rain events. This put residents and the structure at risk. The bridge crosses Hickory Creek, which is connected to Neosho Fish Hatchery and Big Spring Park, both upstream of the project. Given the location, the bridge has a significant impact on wildlife and the ecology of the stream.

The bridge is arched above the high-water elevation to protect the structure from damage. The roadway was realigned to reduce speeds and provide an efficient bridge opening for stream flow. Hickory Creek’s channel widens at the bridge opening to achieve necessary hydraulic opening. An additional feature is a sloped rock stream bed known as a fish ladder. This fish ladder assists aquatic life travelling upstream and preserves the ecology of the stream. A creek pool upstream of the bridge is preserved for a frequent Summer swimming spot for residents.