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The National Academies

NCHRP 20-07/Task 324 [Completed]

NCHRP's Role in Maintaining AASHTO Guidelines and Specifications
[ NCHRP 20-07 (Research for AASHTO Standing Committee on Highways) ]

  Project Data
Research Agency: Inhouse
Principal Investigator: Crawford Jencks
Completion Date: 11/1/2012
Comments: Recommendations provided to AASHTO SCOR and SCOH

Many of the current AASHTO guidelines and specifications are a result of research conducted in the National Cooperative Highway Research Program (NCHRP). After these products have been in use for a number of years, they may require additional research to incorporate the current state of knowledge or practice or additional work may have been completed that should be incorporated into the AASHTO product. Concerns have been raised over the timeliness of updates and over the “piecemeal” approach to updating manuals.  

The objective of this study is to document the process currently used to update manuals and guides and to make recommendations for needed improvements (including appropriate funding sources).


STATUS:  A panel has been formed.  Background information was assembled and submitted to SCOR in March 2012.  The panel used the background materials to develop recommendations for AASHTO SCOR and SCOH.  These recommendations were provided to SCOH and SCOR in November and December 2012. 

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