California Department of Transportation

Geotechnical Services

Geotechnical Services provides statewide geotechnical engineering and engineering geology products and services for the Department. This includes soil and rock field investigations, geotechnical earthquake engineering, exploratory drilling, geophysics, and the development of foundation recommendations for structures, including design and construction support. It provides emergency response to landslides, rockfall, bridge scour and earthquake damage and an accredited geotechnical laboratory. Geotechnical Services also provides statewide policy, standards, procedure and guidance for geotechnical engineering and engineering geology products and services. It serves as the Department’s liaison to professional groups involved in soil and geologic investigations, design and construction.

Mission and Outcomes

Geotechnical Services provides planning, design, construction and maintenance recommendations to achieve project engineering objectives. Our recommendations help clients

  • Effectively manage the scope, schedule, cost, and risks of project delivery and construction.
  • And meet the overall performance objectives of the project.

Objectives to achieve outcomes include:

  • Implement a Geotechnical Quality Management Program.
  • Maintain a high level of Geotechnical Expertise.
  • Enhance Client Interaction & Service.
  • Enhance Industry Partnerships.

Deputy Division Chief

Daniel Speer (916) 227-7254

Office Chiefs

Geotechnical Design North Districts 2, 3, 6, 9, 10 Abbas Abghari (916) 227-1075
Geotechnical Design West Districts 1, 4, 5 Tim Pokrywka (510) 286-4840
Geotechnical Design South Districts 7, 8, 11, 12 Doug Brittsan (916) 227-7004
Geotechnical Support Statewide Tom Song (acting) (916) 227-1001
Geotechnical Design Policy & Practice Statewide Mark DeSalvatore (916) 227-5391