This manual has been developed to assist bridge owners by establishing inspection procedures and evaluation practices that meet the National Bridge Inspection Standards (NBIS). The manual has been divided into eight sections, with each section representing a distinct phase of an overall bridge inspection and evaluation program. This edition updates Sections 3: Bridge Management Systems; 4: Inspection; 6: Load Rating; and 7: Fatigue Evaluation of Steel Bridges.

The PDF Download incorporates the October 2018 Errata and the 2019 Interim Revisions, which can be downloaded from the links below for use with the hardcopy version. The 2020 Interim Revisions are included with the print version and incorporated into the PDF.