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Willdan Engineering provides consulting support in all phases of transportation project development: concepts and financing; planning and project definition; and engineering design and construction management.

Highway and Bridge Design

  • Freeways and Interchanges
  • HOV Lanes
  • Railroad Grade Separations
  • Bridges
  • Local Streets and Roads
  • Pavement Management System
  • Pavement Reconstruction
  • Sound walls
  • Seismic Retrofitting
  • Drainage Facilities

Transportation Planning

  • Corridor Analyses
  • GIS services
  • Route Planning and Refinement
  • Traffic Impact Reports
  • Computer Modeling
  • Capacity Evaluations
  • Site Planning
  • Bicycle and Pedestrian Facilities
  • Congestion Management Programs

Representative Projects

City of Agoura Hills, Kanan Road / US101 Interchange — Los Angeles County, California

Kanan Road

Traffic Congestion Mitigation Project of the Year: APWA SoCal

This $20 million project to relieve congestion modified the freeway mainline and two ramps, added four new ramps, realigned streets, widened two bridges, replaced one and designed one new bridge, and improved channel, drainage, and traffic.

Willdan prepared the environmental document, project report, bridge Advance Planning Studies, (processing the PR and design through Caltrans) and plans, specifications and estimate.

Representative Projects

Los Angeles County Metropolitan Transportation Authority, Orange Line Extension Design-Build — Los Angeles County, California

Orange Line Chatsworth Overcrossing

Regional Transportation Project of 2013 - APWA SoCal; Project Excellence - Western Council of Construction Consumers

Willdan Engineering led the civil design segment of this design-build project for the Los Angeles County Metropolitan Transportation Authority. It extended the Orange Line dedicated bus way an additional four miles north to connect to the Chatsworth Amtrak/Metrolink station. The $98-million project was completed on time and under budget, resulting in significantly improved public transportation times and access throughout L.A. County.

The project included raised landscaped medians, an irrigation system, ADA access curb ramps, dedicated paths for pedestrians and bicycles, park-and-ride and parking lot facilities, traffic signal modifications, communication conduits, and signing and striping. Four new bus stations were constructed, along with two bridge replacements over flood control facilities, and over 4,000 feet of MSE walls.