The project components consist of 95% sand and 5% armoring. The current work in Areas 1 and 2, estimated to cost approximately $10 million, is underway, utilizing an emergency authorization from the California Coastal Commission.

Project Limits and Area of Improvements Interstate 405 (I-405) Improvement Project from Interstate 5 to State Route 55 Project L in Measure M2 plan Average daily traffic is expected to grow 15 percent from 254,000 to 291,000 by 2050 Adds new lanes, generally within existing right-of-way

The project components consist of 95% sand and 5% armoring. The current work in Areas 1 and 2, estimated to cost approximately $10 million, is underway, utilizing an emergency authorization from the California Coastal Commission.

Beach nourishment with shoreline protection structure (1-4 above) Beach nourishment with sand retention measures & shoreline protection structure (1-4 above) Watershed modifications to increase beach sand supply (implemented by others) No railroad action - monitor regional beach nourishment activities and participate as appropriate

The Sand Canyon Avenue Grade Separation, a $64 million project that lowered Sand Canyon Avenue under the railroad tracks and widened the roadway, won the award in the bridge category. The newly constructed bridge opened to motorists in July 2014 and improved safety and mobility for the traveling public.

1.1 INTRODUCTION The purpose of this Project is for the Orange County Transportation Authority (Authority) to construct and operate a compressed natural gas (CNG) Facility (Facility) at the existing Irvine Sand Canyon Bus Base (Base). This Facility is necessary to fuel a new generation of CNG powered buses that will eventually replace the Authority’s existing diesel buses. This Initial Study ...

The project widened Sand Canyon Avenue from four to six lanes between the Interstate 5 (I-5) freeway and Oak Canyon/Laguna Canyon Road and added bicycle lanes. Learn more.

In total, OCTA estimates 95% of the project will be sand placement and 5% will be riprap placement. “For decades, South Orange County beaches eroded without adequate renourishment. This inaction caused widespread erosion, threatening our ocean economy, coastal rail corridor, and endangering our national defense and commerce,” said OCTA ...

6 Sand Nourishment Received eight responses to Request for Information for sand dredge and placement on May 5, 2025; responsiveness review completed. Staff to meet with four identified responsive firms. Next step following the meetings to further determine which firm would have the best capability and availability to meet the project schedule

At the same time, the Orange County Transportation Authority, which is leading the project, is working to source 240,000 cubic yards of sand as part of the project that will be placed in Areas 1 and 2 north of Mariposa Point.