Alternative Pipe Culvert Selection (AltPipe)

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Welcome to the Alternative Pipe Culvert Selection (AltPipe) Website. Altpipe has been changed from a mere Excel spreadsheet into a full fledged web-based application.

Updates to AltPipe from v6.09 to v7.0:

AASHTO Load Resistance Factor Design (LRFD)

The structural requirements within AltPipe Version 7.0 are based on the AASHTO Load Resistance Factor Design (LRFD) pipe update by Structures. AltPipe Version 7.0 was specifically developed to coincide with the publication of the 2010 Standard Specifications by Office Engineer and the associated 2011 Highway Design Manual (HDM) update by Headquarters. Projects using the 2006 Standard Specifications must continue to use AltPipe Version 6.09.

Legal Notice:

By using this program, the user agrees that:

  • The program and any related documentation is provided "as is" without warranty of any kind, either express or implied, including, without limitation, the implied warranties or merchantability, fitness for a particular purpose, or noninfringement; the entire risk arising out of use or performance of this program remains with the user.
  • In no event shall the author, or the California Department of Transportation (Caltrans) be liable for any consequential, special, incidental, or indirect damages of any kind (including, without limitation, damages for loss of business profits, business interruption, loss of business information, or other pecuniary loss) arising out of the delivery, performance, or use of this program.



Please forward any questions/comments/suggestions to


Contact Information

Physical Address:

California Department of Transportation
Division of Design
1120 N Street
Sacramento, CA 95814

Mailing Address:

California Department of Transportation
Division of Design
MS 28
P. O. Box 942874
Sacramento, CA 94271-0001

General Information:

Design Liaison Phone List

Division of Design Org Chart




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