Standards and Codes

AASHTO LRFD Bridge Design Specifications – 2008 Interims Released

The American Association of State Highway and Transportation Officials (AASHTO) just released the 2008 interims for the AASHTO LRFD Bridge Design Specifications, Customary U.S. Units, 4th Edition. These specifications govern the design of foundations for federal and state highway projects. As soon as we find out if there are any significant changes with respect to bridge foundations or retaining walls, we’ll let you know.


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Journal Article Reviews

Drilled Shaft Industry Notes

In the May 2007 edition of Foundation Drilling Magazine, a publication of the Association of Drilled Shaft Contractors (ADSC), Silas Nichols, PE of the Federal Highway Administraton provided a summary of the FHWA’s role in providing guidance on drilled shaft design and construction over the years through research funding, publications and involvement in AASHTO and other agencies. Also in the article is an overview of upcoming updates to AASHTO codes, and FHWA publications. Read on for more details.