Guidance on the Use of the Metric and U.S. Customary Systems of Measurement
Metric Program
The Caltrans Metric Program, no longer in effect, was managed by the Chief of the Office of State Geometric Design Standards. Caltrans Metric Program, Guidance documents related to the Metric standards, and their application, are provided in the Metric to English Transmission/Metric Program Memorandum and Letters for historical information purposes only.
Metric to English Transition/Metric Program Memorandums and letters
Metric System to U.S. Customary System Transition
The California Department of Transportation (Department) has adopted the use of English units as its preferred system of units and measures. The transition to the English system is to be accomplished efficiently, minimizing impacts on project delivery. Projects on the State Highway System advertised after June 30, 2007, regardless of funding source, shall utilize the English system of units and measures unless granted an exception.
- Projects Approved To Continue The Use Of Metric Units
- Exception Request to Continue the Use of Metric Units.
Contact
E-mail questions regarding the database to Derhl.Pratt@dot.ca.gov.
E-mail questions regarding the Departmental transition from Metric units to English units to: Kevin.Herritt@dot.ca.gov.
This page last updated Sept. 2, 2008