State Route 73 MacArthur Boulevard Southbound Off-Ramp Improvement Project

4 Documents in Project


SCH Number
Lead Agency
Caltrans 12 (Santa Ana) (California Department of Transportation, District 12)
Document Title
State Route 73 MacArthur Boulevard Southbound Off-Ramp Improvement Project
Document Type
MND - Mitigated Negative Declaration

Document Description
Caltrans proposes the SR 73 Safety Improvement project which intends to modify the existing lane configuration on the SB SR-73 off ramp to MacArthur Blvd by widening it from one lane to two lanes in the city of Newport Beach. The proposed widening will allow for two through lanes from the off ramp onto southbound MacArthur Blvd, which is expected to reduce collisions. Work activities include modifications of existing lane configuration of the off-ramp, widening Bonita Creek Bridge No. 55-0773 and upgrade existing bridge rail, construction of a retaining wall, installation of an overhead traffic signal, modification of lighting, ramp metering, and existing overhead panel, pavement delineation, removal of existing drainage and construction of new inlets, erosion control.

Contact Information
Edward Dolan
California Department of Transportation, District 12
1750 East Fourth St, Suite 100
Santa Ana, CA 92705



33°38'"N 117°51'46.7"W
Newport Beach
Cross Streets
MacArthur Blvd and Bison Dr
Total Acres
Parcel #
458-152-34, -03, -241-29
State Highways
I-405, SR 133, SR 1
John Wayne Airport
San Diego Creek/Newport Bay watershed

Notice of Completion

Review Period Start
Review Period End
Development Type
Transportation:Other (safety improv)
Project Issues
Cumulative Effects Landuse Growth Inducing Wetland/Riparian Water Supply Water Quality Vegetation Traffic/Circulation Toxic/Hazardous Soil Erosion/Compaction/Grading Recreation/Parks Public Services Population/Housing Balance Noise Minerals Geologic/Seismic Forest Land/Fire Hazard Flood Plain/Flooding Biological Resources Archaeologic-Historic Air Quality Agricultural Land Aesthetic/Visual
Reviewing Agencies
Air Resources Board, Transportation Projects California Coastal Commission California Department of Parks and Recreation California Highway Patrol Caltrans, Division of Aeronautics Department of Fish and Wildlife, Region 5 Department of Water Resources Native American Heritage Commission Office of Historic Preservation Regional Water Quality Control Board, Region 9 Resources Agency State Water Resources Control Board, Division of Water Quality
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