National City, California
Capuzzi Consulting Group staff served as Project Manager (Matt Capuzzi) for the conceptual and final design of this roundabout. Design elements included construction of a modern roundabout at the intersection of 12th Street and D Avenue, LID design features, plaques honoring each of the five branches of the military in the center of the roundabout, retaining walls to protect existing dry utilities in place, and landscape and irrigation. The design also included drainage improvements and the introduction of structural water quality BMPs to significantly improve stormwater quality. The precise grading design was particularly challenging on this project due to the steep slopes on three of the four intersection approaches and an existing water transmission line at shallow depth.
