Company:
City of Santa Ana
Status:
Awarded
Awarded:
Roadway & Highway Project of the Year
Additional Files
Before and after pictures
Additional pictures showcasing the completed project features
Additional Information

Bristol Street Improvements Phase II

Project Location:

Bristol Street from 3rd Street to Civic Center

Project Description:

The Bristol Street Improvements project was planned and designed to incorporate complete street concepts with storm drain quality features and implementation of Green Street technologies.  The improvements included widening of the street from 4 lanes to six lanes, with bus turnouts, raised median, bike lanes, and sound walls.  The project also brings native and organic landscaping that beautifies a fully developed urban area.

Project Justification:

The project team selected a biofiltiration BMP for Bristol Street Improvements. A series of drought tolerant vegetated bio-swales were designed to capture and filter a 2 year storm. The swales did not only include run-off from the project foot print but also run-off from the whole drainage area boundary.  Storm drain run-off flows from adjoining neighborhood streets to the main arterial where a storm drain facility exists. The 2-year storm run-off of the drainage area boundary is 6.92cfs and the swales capacity collectively is 8.93cfs.  The project includes a creative low impact development solution by incorporating a vegetated bio-swale in proposed parkways. The bio-swale will disconnect impervious areas, filter storm drain run-off, and contain flows from moderate rain storms. Additionally, the bio-swale will bring a native and organic pre-development landscape theme to a fully built-out transportation corridor.  This project is worthy of award for various categories.

Special Circumstances:

The City was awarded with a Bronze Certification from GreenRoads, which is a third party rating system that rewards roadway projects that exceed public expectations for environmental, economic, and social performance.  As a result of the certification process, the City has built good relationship with GreenRoads and other cities and counties in southern California.  City staff has also given presentations sharing our experience to ASCE-OC Sustainability Lunch Presentation, APWA 2015 Complete Streets and Technology Conference, and top engineers from Abu Dhabi DOT for knowledge exchange.

Project Attachments:

Urban storm water runoff affects water quality, water quantity, habitat and biological resources, public health, and the aesthetic appearance of urban waterways.  Furthermore, storm water runoff from urban areas can contain significant concentrations of harmful pollutants and trash that can contribute to adverse water quality impacts in receiving streams. The project, however, can change the quality of life in the urban areas by implementing bio-swale inlet and outlet that would collect trash and absorb pollutants before entering the storm drain system.  Furthermore, landscaping composed of drought tolerant plants including drainage low flow bioswales. Low flow emitters were installed in efforts to conserve water during the establishment period. 

Please see additional pictures as submitted hereon.

Award Citation::

The Bristol Street Improvements project was planned and designed to incorporate complete street concepts with storm drain quality features and implementation of Green Street technologies.  The project also brings native and organic landscaping that beautifies a fully developed urban area.

Suggested Award Summary:

The Bristol Street Improvements project was planned and designed to incorporate complete street concepts with storm drain quality features and implementation of Green Street technologies.  The City was awarded with a Bronze Certification from GreenRoads, which is a third party rating system that rewards roadway projects that exceed public expectations for environmental, economic, and social performance.  The improvements included widening of the street from 4 lanes to six lanes, with bus turnouts, raised median, bike lanes, and sound walls.  The project also brings native and organic landscaping that beautifies a fully developed urban area.

The project team selected a biofiltiration BMP for Bristol Street Improvements. A series of drought tolerant vegetated bio-swales were designed to capture and filter a 2 year storm. The swales did not only include run-off from the project foot print but also run-off from the whole drainage area boundary.  Storm drain run-off flows from adjoining neighborhood streets to the main arterial where a storm drain facility exists. The 2-year storm run-off of the drainage area boundary is 6.92cfs and the swales capacity collectively is 8.93cfs.  The project includes a creative low impact development solution by incorporating a vegetated bio-swale in proposed parkways. The bio-swale will disconnect impervious areas, filter storm drain run-off, and contain flows from moderate rain storms. Additionally, the bio-swale will bring a native and organic pre-development landscape theme to a fully built-out transportation corridor. 

CEC

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