Novel Trash Capture Device for the Highway Environment

Challenge  

Traditional trash-capture devices that can be installed in upstream locations such as drain, or curb inlets are of limited use in highway environments due to potential flooding, hydroplaning, safety and maintenance-personnel exposure issues. There was a need for a trash-capture system that could be easily retrofitted in existing highway drainage infrastructure or included in newer projects.

Solution  

Development of trash-capture device and testing project was initiated in early 2020. An idea for "capture housing" device was started. Computational fluid dynamics modelling was used to assess the feasibility and performance of the concept. A full-scale physical model was tested in the laboratory. After physical model tests were successful, Standard Plans and Design Guidance were developed in collaboration with the Office of Hydraulics and Stormwater. Caltrans has been granted a Patent on the device by the US Patent Office.

Result

• Reduced costs

• Improved trash capture efficiency

• Reduced maintenance

• Reduced climate impacts (GHG)  

Project Contact:  

Bhaskar Joshi  - Bhaskar.Joshi@dot.ca.gov