Traffic & Development Support

Provides engineering services for roadways in unincorporated areas and regional flood control programs throughout Orange County. This includes programming, design, legislation tracking, project management, traffic safety, and development support services.

Core Services

Engineering Design

Manages the design of the County’s roadways, bridges, bikeways, flood control channels, storm drains, dams, pump stations and other drainage related facilities.

Flood Programs

Coordinates floodplain management services with agencies such as the Federal Emergency Management Agency (FEMA) and others on behalf of the Orange County Flood Control District. Oversees local sponsor role in the Santa Ana River Mainstem project.


Provides long-term advance planning and funding support for project development, securing funding to implement the County’s Capital Improvement Plan, including facilities in the Master Plan of Arterial Highways, bridges, flood channels and other roadway improvement projects.

Project Management

Manages all facets of large horizontal construction projects, including procurement, regulatory compliance, construction contractor activities and public involvement, for roads, bridges and flood control channels and bikeways.

Traffic & Development Support

Provides traffic engineering analyses and recommendations and implements signal operations to maintain roadway safety and effectiveness. Reviews permits for private use of public roadway or for modification, along with proposed developer infrastructure that will become part of the County system.