This guidance paraphrases provisions of 23 U.S.C. Previous editions of this guidance pamphlet are superseded and no longer valid. The Federal Highway Administration (FHWA) revises its guidance pamphlet Federal Bridge Formula Weights (May 2015). You may need the Adobe® Reader® to view the PDFs on this page.Ĭontact Information: Operations Feedback at Department of Transportation Home > Truck Size & Weight Bridge Formula Weights