Bridge Inspection Manual
The Washington State Bridge Inspection Manual (WSBIM) has been developed to provide specific guidance, offer needed technical details, and serve as an information source to both state and local agency staff related to and involved with bridge inspections within the state of Washington. The intent of this manual is to serve as an operations manual for the collection, processing and reporting of bridge inspection information.
Bridge Inspection Manual Memorandums
Bridge inspection manual memorandums are issued as interim updates to the Bridge Inspection Manual.
Individual Chapters
Foreword (PDF 269KB)
Comment Request Form (PDF 154KB)
Contents (PDF 257KB)
Introduction (PDF 272KB)
Chapter 1 Bridge Inspection Organization Requirements (PDF 1.2MB)
Chapter 2 Bridge Files and Documentation (PDF 3.9MB)
Chapter 3 Inspections and Reports (PDF 5.1MB)
Chapter 4 WSDOT Bridge Elements (PDF 9.9MB)
Chapter 5 Load Rating and Scour (PDF 1.4MB)
Chapter 6 Damage and Repairs (PDF 600KB)
Chapter 7 Quality Control/Quality Assurance (PDF 1.3MB)
Chapter 8 Electrical and Mechanical (PDF 2.1MB)
Chapter 9 Tunnels (PDF 566KB)
Revision History
M 36-64.14
M 36-64.13
M 36-64.12
M 36-64.11
M 36-64.10
M 36-64.09
M 36-64.08
M 36-64.07
M 36-64.06
M 36-64.05
M 36-64.04
M 36-64.03
M 36-64.02
M 36-64.01 February 2009
166,800 electric vehicle
registrations in Washington in 2023, up from 114,600 in 2022.
87 wetland compensation sites
actively monitored on 918 acres in 2023.
25,000 safe animal crossings
in the Snoqualmie Pass East Project area since 2014.