Project Description
RICK prepared plans, specifications, and estimates (PS&E) for intersection improvements at Trabuco Road and Monroe in the City of Irvine. Trabuco Road is a divided four-lane major roadway with a 100’-wide drainage channel in the median. The drainage channel bisects the intersection with Monroe, creating non-standard intersection geometry that was both inefficient and hazardous. The project featured a new six-phase interconnected traffic signal and revisions to the intersection geometry. These proposed revisions to the intersection geometry also required modifications to the flood control channel. The channel modifications involved the extension of the existing box culvert and the narrowing of the channel to accommodate higher-capacity left-turn pockets. The PS&E was prepared and processed through the City of Irvine and the Orange County Flood Control District for permits.
For this project, RICK utilized our 3D laser scanning to prepare the project base map. The 3D laser scanning not only provided our design team with complete and precise survey data, but it allowed us the flexibility to extract data from additional areas as the project limits evolved without the need to redeploy survey crews. It also allowed us to collect the survey data without impacting traffic.
The final engineering included PS&E for roadway/intersection improvements, channel modifications, erosion control, a six-phase traffic signal, and signing and striping plans. The scope of work also included a Water Quality Management Plan (WQMP) and coordination with several utility companies.