Structures Inspection

Maintenance & Inspection

Policy Memos | Structures Inspection | Structures Preservation | Announcements | Forms | Highway Structures Information System (HSI) | Program Managers | Inspector Application & Credentials | Training & Tools | Local Structures (6-20 ft) | Lift Bridges | Load Rating | Additional Resources | Contacts

Inspection Field Manuals & References

2024 WisDOT Structure Inspection Field Manual With 2025 Updates

2025 WisDOT Field Manual Update Summary

2023 Pilot Field Guide Update

Fatigue-Prone Detail Inspection Manual

Animal Nesting/Roosting Presence on Structure Guide

Structure Inspection Manual (2025)


Part 1 - Administration

DescriptionUpdated
Chapter 1 - Introduction3/24
Chapter 2 - Inspection Program Overview3/26
Chapter 3 - Types of Bridge Inspections and Assessments3/26
Chapter 4 - Fundamentals of Structure Inspections3/26
Chapter 5 - Reporting Systems4/25
Chapter 6 - Field Quality Control/Quality Assurance3/24
Chapter 7 – Critical Finding Procedure and Documentation9/23
Appendix A - Deck Scanning Policy11/20
Appendix C - SRM baseline condition report for steel twin tub girders3/26
Appendix D - SRM baseline condition report for floorbeams (spaced greater than 14’)3/26

Part 2 - Bridges

DescriptionUpdated
Chapter 1 – General7/24
Chapter 2 – Condition Evaluation Procedures3/24
Chapter 3 – Deck3/26
Chapter 4 – Superstructure3/26
Chapter 5 – Substructure7/24
Chapter 6 – Roadway and Appurtenances3/26
Chapter 7 - Assessments7/24
Chapter 8 - Waterways7/24
Chapter 9 - Impact Protection Systems8/17
Appendix A - Common Defects3/24
Appendix B/C/D - Conventions and Details3/24

Part 3 - Movable Structures

DescriptionUpdated
Chapter 1 – General4/25
Chapter 2 – Bascule Bridges8/17
Chapter 3 – Vertical Lift Bridges8/17
Chapter 4 – Swing Bridges8/17
Chapter 5 – Functional Systems8/17
Chapter 6 – Electrical Systems8/17
Chapter 7 – Hydraulic Systems8/17
Chapter 8 – Mechanical Systems8/17
Chapter 9 - Element Level Inspection
7/24

Part 4 - Ancillary Structures

DescriptionUpdated
Chapter 1 – General7/24
Chapter 2 – Overhead Sign Signal Structures or Supports3/24
Chapter 3 – High Mast Lighting3/24
Chapter 4 – Retaining Walls7/24
Chapter 5 – Noise Walls3/24
Chapter 6 – Small Bridges (C-Structures)3/24
Chapter 7 – NOT USED3/24
Chapter 8 – Other Structures Over Roadways3/24

Part 5 - NDT and PDT Testing

DescriptionUpdated
Chapter 1 – General Overview and Summary Table4/25
Chapter 2 – Visual Inspection3/24
Chapter 3 – Audible Inspections4/14
Chapter 4 – Liquid Penetrant4/14
Chapter 5 – Ultrasonic Testing4/25
Chapter 6 – Acoustic Emission4/14
Chapter 7 – Magnetic Particle4/25
Chapter 8 – Eddy Current3/24
Chapter 9 – Radiography4/14
Chapter 10 – Ground Penetrating Radar4/14
Chapter 11 – Infrared Thermography4/14
Chapter 12 – Impact Echo Testing4/14
Chapter 13 – Ultrasonic Pulse Velocity4/14
Chapter 14 – Covermeter Testing4/14
Chapter 15 – Half-Cell Testing4/14
Chapter 16 – Chloride Ion Testing4/14
Chapter 17 – Carbonation Testing4/14
Chapter 18 – Rebound Hammer4/14
Chapter 19 – Windsor Probe4/14
Chapter 20 - Resistance Micro-Drills4/14
Chapter 21 - Stress Wave Timers4/14
Chapter 22 - Monitoring Systems4/14
Chapter 23 - Material Sampling4/14
Chapter 24 - Unknown Foundation Investigation4/14
Chapter 25 - Hydrographic Survey4/14

Part 6 - Tunnels

DescriptionUpdated
Chapter 1 - Organization3/26
Chapter 2 - Inspection Types10/22
Chapter 3 - Reporting Systems10/22
Chapter 4 - Critical Findings10/22
Chapter 5 - QA QC10/22

Full Document

DescriptionUpdated
Structures Inspection Manual - Part 1 through 6
3/26

Contact David Bohnsack for questions about this page.