California Department of Transportation

Quick Map

Materials Lab



Laboratory Policies and Procedures




CalTrans Mendocino County Field Laboratories

skunk train

Caltrans District 01 Main Laboratory

1726 Albee st.

Eureka, Ca. 95501



Caltrans Field Laboratories


Ft. Bragg Maintenance Yard (De-Certified)

925 Franklin

Ft. Bragg, Ca. 95437


Willits Lab

998 Hearst Rd.

Willits, Ca. 95490

Redwood Valley (De-Certified)

6301 N. State St.

Redwood Valley, Ca. 95470


Caltrans Accredited Private Laboratories


Granite Construction/ Garco Testing Lab

4201 North State St.

Ukiah, Ca. 95482


SHN Engineers & Geologists Inc.

493 South Main St.

Willits, Ca. 95490


LACO Associates Consulting Engineers

311 South Main St.

Ukiah, Ca. 95482