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Highway Design Manual
The Highway Design Manual (HDM) has been revised with the 6th Edition HDM Change 12/16/16. Changes include FHWA's revision from 13 to 10 controlling criteria for design as well as revised superelevation, comfort speed, and horizontal curvature guidance from the AASHTO publication, "A Policy on Geometric Design of Highways and Streets" (2011). Also included is revised guidance related to airway-highway clearances, bridge barriers and railings, roundabouts, ramp metering, and water and resource conservation. Clarifications were included related to curb ramps and necessary highway features within the clear recovery zone as well as errata that reflect current nomenclature.
How can I get a copy of the HDM?
The latest English Version of the Highway Design Manual (HDM) is available on-line below in two formats.
- The first format available is a PDF file of the complete manual which will allow you to perform word searches of the complete manual and/or allow you to download or print the complete HDM cover to cover all at one time.
- A second format available in Metric, PDF Metric complete manual also allows you to perform word searches of the complete manual in Metric units.
Please note, implementation of the current version of the 6th Edition HDM available below shall be applied to on-going projects in accordance with HDM Index 82.5, unless otherwise noted on the Manual Change Transmittal memo or by separate Design Memo.
No matter which of the formats is used to download and/or print, if the HDM Holder chooses to do so, the Holder is responsible for keeping their electronic and/or paper copy up to date and current. For this reason, HDM Holders are encouraged to use the on-line versions of the HDM for the most current design guidance.
The HDM is available for purchase through the Caltrans Publication Unit. If this option is chosen, the HDM Holder and not the Publications Unit is responsible for obtaining and inserting all of the change-sheets that are available on the Department Design website.
Would you like to be notified automatically of any changes or updates to the Highway Design Manual? If "YES" Click Here.
How can I propose changes to the manual?
|Chapter Name||PDF version||Last Updated|
|Contents||Expanded Table of Contents||toc.pdf||12-16-16|
|Chapter 10||Division of Design||chp0010.pdf||12-30-15|
|Chapter 20||Designation of Highway Routes||chp0020.pdf||05-07-12|
|Chapter 80||Application of Design Standards||chp0080.pdf||12-16-16|
|Chapter 100||Basic Design Policies||chp0100.pdf||12-16-16|
|Chapter 200||Geometric Design and Structure Standards||chp0200.pdf||12-16-16|
|Chapter 300||Geometric Cross Section||chp0300.pdf||12-16-16|
|Chapter 400||Intersections At Grade||chp0400.pdf||12-16-16|
|Chapter 500||Traffic Interchanges||chp0500.pdf||12-16-16|
|Chapter 600||Pavement Engineering||chp0600.pdf||11-02-12|
|Chapter 610||Pavement Engineering Considerations||chp0610.pdf||11-02-12|
|Chapter 620||Rigid Pavement||chp0620.pdf||11-02-12|
|Chapter 630||Flexible Pavement||chp0630.pdf||05-07-12|
|Chapter 640||Composite Pavements||chp0640.pdf||12-30-15|
|Chapter 650||Pavement Drainage||chp0650.pdf||12-30-15|
|Chapter 660||Base and Subbase||chp0660.pdf||12-30-15|
|Chapter 670||Structure Approach Slabs||chp0670.pdf||12-30-15|
|Chapter 700||Miscellaneous Standards||chp0700.pdf||12-30-15|
|Chapter 800||General Aspects||chp0800.pdf||12-30-15|
|Chapter 820||Cross Drainage||chp0820.pdf||07-01-15|
|Chapter 830||Transportation Facility Drainage||chp0830.pdf||07-01-15|
|Chapter 840||Subsurface Drainage||chp0840.pdf||10-04-10|
|Chapter 850||Physical Standards||chp0850.pdf||12-30-15|
|Chapter 860||Open Channels||chp0860.pdf||03-07-14|
|Chapter 870||Bank Protection - Erosion Control||chp0870.pdf||07-15-16|
|Chapter 880||Shore Protection||chp0880.pdf||07-15-16|
|Chapter 890||Storm Water Management||chp0890.pdf||09-01-06|
|Chapter 900||Landscape Architecture||chp0900.pdf||12-16-16|
|Chapter 1000||Bicycle Transportation Design||chp1000.pdf||12-16-16|
|Chapter 1100||Highway Traffic Noise Abatement||chp1100.pdf||12-30-15|
If you have any questions about the Highway Design Manual send e-mail to: Antonette.Clark@dot.ca.gov.
This page last updated April 7, 2016