Evaluating a variety of sustainable solutions to replace an interceptor and restore stream banks while preventing further erosion
The Elm Fork is one of three principal branches of the Trinity River, the longest river with a rivershed in the state of Texas and one of the largest sources of water to North Texas. The Trinity River Authority of Texas engaged us to replace an existing wastewater inceptor to improve system capacity of the Elm Fork sub-basin.
Throughout construction, we assessed various options and navigated several coordination points. While we accommodated limited land space, we avoided disturbing traffic by going underground—opting to install two trenchless tunnels crossing the Northwest Highway and Dallas Area Rapid Transit (DART) railroad. Despite adverse weather and flooding, we stayed ahead of schedule. Our multifaceted approach also allowed us to address another need—impacts to the stream in a park setting and public use areas. We brought in our environmental services team to promote the natural functions of the stream ecosystems. Streambank stabilization allowed us to protect the existing pipe and proposed siphon from further erosion.
Ultimately, our team determined an inceptor replacement approach that provided function, value, and ecosystem restoration. The community sees their public works and utilities embrace the chance to better their parks and ensure public and recreation use for years to come.
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