Bioretention Design Creates Sustainable Roadway and Stormwater Solutions
2011
Merritt Road in Rowlett is providing the groundwork for future development in the Rowlett area. The roadway will be expanded to a four-lane concrete roadway and the design integrates sustainable solutions, including medians that contain native plantings, vegetated swales and four bioretention systems.
The project also includes moisture-treated subgrade underneath the pavement to reduce potential pavement movement and a “treatment train” drainage method. The treatment train system focuses on the application of low maintenance and cost-effective Best Management Practice design solutions aimed to improve water quality, reduce landscaping maintenance and irrigation demands, and deliver cost savings to the client.
With a goal to remove pollutants before entering water bodies, Freese and Nichols’ treatment train includes a combination of techniques: an open vegetated channel, forebay sediment filtering, biological uptake of pollutants with native plantings and filtration of water before discharge.
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