Adoption Info of California Highway Design Manual (HDM)

Official title California Highway Design Manual (HDM)

Effective dates Current edition (2021) – Present

Published by California Department of Transportation (Caltrans)

California Wood Construction Wind and Seismic Code 2015

Overview The California Highway Design Manual (HDM) provides comprehensive guidelines and standards for the design of highways and streets in California. It includes detailed requirements for geometric design, traffic operations, highway safety, roadside design, environmental considerations, and structural design. The manual ensures that highway design projects meet high standards of safety, functionality, and environmental sustainability.

The HDM is periodically updated to incorporate the latest advancements in highway engineering and to address specific conditions unique to California. The manual is essential for engineers, planners, and designers involved in the development and maintenance of the state’s transportation infrastructure.

Maureen Guttman

AIA
President
Washington, DC