Bridge Inspection Manual (INS)
Bridge Inspection ManualRevised March 2020 2020 by Texas Department of Transportation(512) 463-8630 all rights reserved
Manual Notice 2020-1From:Graham A. Bettis, P.E., Director, Bridge DivisionManual:Bridge Inspection ManualEffective Date: March 09, 2020PurposeThis manual provides policy for bridge inspection personnel and helps ensure consistency in bridgeinspection, rating, and evaluation.ContentsVarious chapters of this manual have been revised for consistency with the National Bridge Inspection Standards and to clarify TxDOT practices and policy related to the bridge inspection program.Historical information as well as other topics already covered in other TxDOT manuals have beenremoved from this manual.Notable changes to this manual include revisions to clarify TxDOT policy related to: Follow-Up Actions / Recommendations made as part of an inspection. Securely storing and transferring bridge inspection information. Required documentation for scour critical bridges Required reporting to FHWASupersedesThis revision supersedes the February 2018 version of this manual.ContactFor more information about any portion of this manual, please contact the Bridge InspectionBranch of the Bridge Division.ArchivesPast manual notices are available in a PDF archive.
Table of ContentsChapter 1 — IntroductionSection 1 — About this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Chapter 2 — Bridge Inspection Program OverviewSection 1 — Texas Bridge Inspection Program . . . . . . . . . . . . . . . . . . . . . . . . 2-2Section 2 — Primary References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Chapter 3 — Qualifications and Responsibilities of Bridge Inspection PersonnelSection 1 — Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Federal Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2TxDOT Additional Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Section 2 — TxDOT Bridge Inspection Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Bridge Inspection Program Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Qualified Team Leaders - District Bridge Inspection Coordinators or Bridge Inspection Specialists in a District or Division . . . . . . . . . . . . . . . . . . . . . . . . 3-5Other Bridge Inspection Specialists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6Section 3 — Bridge Inspections by Consultants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7Routine Bridge Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7Complex Bridge Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8Underwater Bridge Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9Non-Destructive Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9Section 4 — Use of the Consultant Pool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10Request for Consultant Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10Work Authorization Issuance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10Managing Consultant Bridge Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10Evaluation of Bridge Inspection Consultant Firm and Project Manager. . . . . . . . . . . . . . 3-11Chapter 4 — Field Inspection Requirements and ProceduresSection 1 — Types of Bridge Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Section 2 — Consultant Inspection Requirements . . . . . . . . . . . . . . . . . . . . .General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tools and Safety Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inspections Involving Railroads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Coordination with TxDOT District . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Email and Correspondence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bridge Inspection Manuali4-24-34-34-34-34-34-4TxDOT 3/2020
Quality Control Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5Section 3 — Initial Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6Section 4 — Routine Inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7Inspection Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7Section 5 — Damage Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9Section 6 — In-Depth Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10Reasons for In-Depth Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10Section 7 — Fracture-Critical Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11Fracture-Critical Members. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12Inspection Procedures for Fracture Critical Members. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13Fatigue and Fatigue Fracture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14Fatigue-Prone Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14Weld Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16Fatigue in Secondary Members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16Proper Welding and Repair Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17FC Inspection Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17Section 8 — Underwater Inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18Underwater Inspection Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18Levels of Underwater Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18Underwater Structural Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19Underwater Inspection Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19Underwater Structural Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19Section 9 — Special Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20Section 10 — Complex Bridge Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21Section 11 — Pedestrian Bridge Inspections . . . . . . . . . . . . . . . . . . . . . . . . . 4-22Section 12 — Element Level Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23Section 13 — Critical Inspection Findings (CIFs). . . . . . . . . . . . . . . . . . 4-24Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24Section 14 — Bridge Emergency Response and Notification . . . . . . . . . 4-25Response and Notification Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25Definition and Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26Roles and Responsibilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26Immediate Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26Documentation and Record Keeping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27Bridge Inspection ManualiiTxDOT 3/2020
Chapter 5 — Ratings and Load PostingSection 1 — Condition Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Definition of Condition Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Recording Condition Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Assigning Condition Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3Section 2 — Appraisal Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5Definition of Appraisal Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5Appraisal Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5Section 3 — Load Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9Definition of Load Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9Determination of Load Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9Inventory Rating and Design Load Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9Assigned Load Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10Assumed Load Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10Calculated Load Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11THD Design Supplement No. 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11Customary Rating Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13Rating Concrete Bridges with No Plans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15Ratings for Unusual Bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16H- and HS-Load Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17Specialized Hauling Vehicle (SHV) Load Ratings. . . . . . . . . . . . . . . 5-17Emergency Vehicle (EV) Load Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17Substructure Load Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18Section 4 — Legal Loads and Load Posting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19Definition of State Legal Loads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19Load Posting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20Procedures for Changing On-System Bridge Load Posting . . . . . . . . . . . . . . . . . . . . . . . 5-23Procedures for Emergency On-System Bridge Load Posting . . . . . . . . . . . . . . . . . . . . . . 5-25Closure of Weak Bridges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26Procedures for Closing an Off-System Bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26Procedures for Changing Off-System Bridge Load Posting . . . . . . . . . . . . . . . . . . . . . . . 5-27Chapter 6 — Routing and PermitsSection 1 — Role of District Permit Officers, District Bridge Inspection Coordinators, and theTexas Department of Motor Vehicles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2Section 2 — Permits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OverHeight and OverWidth Permits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Overweight Permit Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Superheavy Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bridge Inspection Manualiii6-36-36-46-4TxDOT 3/2020
Other Differences Between Overweight Permits and Operating Rating . . . . . . . . . . . . . . . 6-5Overloads on Posted or Substandard Bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5Pre- and Post-Move Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6Chapter 7 — Bridge ProgrammingSection 1 — Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2Chapter 8 — Bridge RecordsSection 1 — Definition of Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2Bridge Record Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2Section 2 — Coding Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6Summary of Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6Multiple-Pipe Culverts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6Data Quality and Timely Updating of Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6Section 3 — Inspection Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8Inspection File Contents - On System Bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8Inspection File Contents - Off System Bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10Section 4 — Calculations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13General Calculation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13Calculations for On-System Bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13Calculations for Off-System Bridges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14Section 5 — Data Submittal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17General Data Submittal Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17Photographs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17Presentation of Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18On-System Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18Off-System Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18Summary Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-19Scour Records and Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-19Section 6 — The Bridge Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21Section 7 — Open Records Requests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22Bridge Inspection Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22List of Inspection Consultants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22Section 8 — File Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23Transferring Information to Local Bridge Owners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23Securing Hard Copy Bridge Inspection Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23Disposing of Hard Copies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23Chapter 9 — Quality Control/Quality Assurance ProgramSection 1 — Introduction of the Quality Control / Quality Assurance Program . . . . . . . . . . 9-2Bridge Inspection ManualivTxDOT 3/2020
Quality Control/Quality Assurance Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2Goals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3Section 2 — Bridge Inspection Program Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5Bridge Inspection Program Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5Bridge Division . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5District Bridge Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5Bridge Inspection Consulting Firm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6Bridge Inspection Program Staff Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7TxDOT Bridge Inspection Program Staff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7Bridge Division Staff. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7District Bridge Section Staff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8Bridge Inspection Consulting Firm Staff. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9Section 3 — Quality Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11Quality Control Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11QC Programmatic Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11QC Programmatic Elements – Bridge Division. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11QC Programmatic Elements – District Bridge Section . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13QC Programmatic Elements – Bridge Inspection Consulting Firm . . . . . . . . . . . . . . . . . 9-14Quality Control Review Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14QC Review Elements - Bridge Division Underwater (UW) and Fracture Critical (FC) Units .9-14QC Review Elements – District Bridge Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-16QC Review Elements – Consulting Firm QC Program and Efforts . . . . . . . . . . . . . . . . . 9-20Section 4 — Quality Assurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22Quality Assurance Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22Quality Assurance Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-23QA Review – Bridge Division Underwater and Fracture Critical Units . . . . . . . . . . . . . . 9-23QA Review – District Bridge Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-24QA Review – Consulting Firm QC Program and Efforts . . . . . . . . . . . . . . . . . . . . . . . . . 9-26Appendix A — State and Federal RegulationsBridge Inspection Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1Code of Federal Regulations Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1U.S. Code for Bridge Inspection Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2Texas Transportation Code Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2Appendix B — Links to Coding GuidelinesBridge Inspection Coding Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1Appendix C — Quality Control (QC) Review Forms & Bridge Inspection ManualvTxDOT 3/2020
Contact ListsQC Review Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1Contact Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1Bridge Inspection ManualviTxDOT 3/2020
Chapter 1 — IntroductionContents:Section 1 — About this ManualBridge Inspection Manual1-1TxDOT 03/2020
Chapter 1 — IntroductionSection 1 — About this ManualSection 1 — About this ManualPurposeThis manual provides policy for bridge inspection personnel, provides a reference for consultants, and helps to ensure consistency in bridge inspection, rating, and evaluation.This document outlines TxDOT’s policy and procedures related tothe Statewide Bridge Inspection Program.ContactFor more information about any portion of this manual, please contact the Bridge InspectionBranch of the Bridge Division.Bridge Inspection Manual1-2TxDOT 03/2020
Chapter 2 — Bridge Inspection Program OverviewContents:Section 1 — Texas Bridge Inspection ProgramSection 2 — Primary ReferencesBridge Inspection Manual2-1TxDOT 03/2020
Chapter 2 — Bridge Inspection ProgramOverviewSection 1 — Texas Bridge InspectionProgramSection 1 — Texas Bridge Inspection ProgramThe primary purpose of bridge inspections is to ensure public safety. The secondary purpose is topreserve the remaining life in our structures through the early detection and addressing ofdeficiencies.Federal law governs the requirements of the TxDOT Bridge Inspection Program. The United StatesCode (23 U.S.C. 151) requires the Secretary of Transportation, in consultation with State transportation departments, to establish national bridge inspection standards for the proper safety inspectionand evaluation of all highway bridges. These requirements are spelled out in the Code of FederalRegulations (Part 650, Subpart C) and govern the National Bridge Inspection Standards (NBIS)through purpose, applicability, definition of terms, qualification of personnel, inspection frequencies, inspection procedures, inventory procedures, and supporting references.Federal Highway Administration (FHWA) has developed 23 Metrics for the Oversight of theNational Bridge Inspection Program. These metrics are a risk-based assessment of the performanceof state bridge inspection programs and compliance with the NBIS. Each year, TxDOT's BridgeInspection Program is audited by the FHWA for compliance on these metrics.TxDOT's Bridge Inspection Program has evolved since the first formal bridge inspection programin Texas began in 1975. Today, data recorded for Texas bridges exceeds that required by theFHWA. A detailed description of the data recorded is contained in the TxDOT Bridge CodingGuide.Bridge Inspection Manual2-2TxDOT 03/2020
Chapter 2 — Bridge Inspection ProgramOverviewSection 2 — Primary ReferencesSection 2 — Primary ReferencesMany standards, manuals, and technical advisories have been developed over the years related tobridge inspection. Most of these are issued by the American Association of State Highway andTransportation Officials (AASHTO) or by the FHWA. The primary bridge inspectionreferences are listed below: AASHTO LRFD Bridge Design Specifications AASHTO Manual for Bridge Evaluation AASHTO Manual for Bridge Element Inspection FHWA Bridge Inspector's Reference Manual FHWA Hydraulic Engineering Circular No. 18 Code of Federal Regulations, 23 Highways Part 650, Subpart C - National Bridge InspectionStandards. FHWA Metrics for the Oversight of the National Bridge Inspection Program TxDOT Coding GuideBridge Inspection Manual2-3TxDOT 03/2020
Chapter 3 — Qualifications and Responsibilities of BridgeInspection PersonnelContents:Section 1 — RequirementsSection 2 — TxDOT Bridge Inspection PersonnelSection 3 — Bridge Inspections by ConsultantsSection 4 — Use of the Consultant PoolBridge Inspection Manual3-1TxDOT 03/2020
Chapter 3 — Qualifications and Responsibilities ofBridge Inspection PersonnelSection 1 — RequirementsSection 1 — RequirementsFederal RequirementsThe NBIS have specific qualification requirements for individuals working in the bridge inspectionprogram of a state. These are summarized as: The individual in charge of each organizational unit (the Bridge Inspection Branch of theBridge Division or the project manager for each firm under contract with TxDOT to performbridge inspections) must: be a Licensed Professional Engineer in Texas or have a minimum of ten years experience in NBIS bridge inspection experience; and successfully completed an FHWA approved comprehensive bridge inspection trainingcourse.The individual in charge of any bridge inspection team (Team Leader), regardless oftype, must: have the same qualifications as above, or be a Licensed Professional Engineer and have successfullycompleted an FHWA comprehensive bridge inspection trainingcourse, or have a minimum of five years experience in NBIS bridge inspection and have successfully completed an FHWA approved comprehensive bridge inspection training course, or have all of the following:1.a bachelor's degree in engineering from a college or university accredited by or determined assubstantially equivalent by the Accreditation Board for Engineering and Technology; and2.successfully passed the National Council of Examiners for Engineering and Surveying Fundamentals of Engineering examination;3.two years of NBIS bridge inspection experience; and4.successfully completed an FHWA approved comprehensive bridge inspection training course;or have all of the following:1.an associate's degree in engineering or engineering technology from a college or universityaccredited by or determined as substantially equivalent by the Accreditation Board for Engineering and Technology; and2.four years of NBIS bridge inspection experience; and3.successfully completed an FHWA approved comprehensive bridge inspection training course.Bridge Inspection Manual3-2TxDOT 03/2020
Chapter 3 — Qualifications and Responsibilities ofBridge Inspection PersonnelSection 1 — Requirements The individual charged with the overall responsibility for load rating bridges must be a registered professional engineer. An underwater bridge inspection diver must complete an FHWA approved underwater diverbridge inspection training course or an FHWA approved comprehensive bridgeinspection training course. Any individual required to have successful completion of anFHWA approved comprehensive bridge inspection training coursemust also successfully complete an FHWA approved bridge inspection refresher course. This course shall be repeated every fiveyears beginning on the first five-year anniversary of successful completion of the comprehensive training course.TxDOT Additional RequirementsAt a minimum, all bridge inspection activities performed by TxDOT and by TxDOT bridge inspection consultants must comply with Federal requirements. In addition to Federal requirements forbridge inspection personnel, some roles may require more specific job-related knowledge andskills such as: The use of breathing apparatus for underwater inspection. The various applicable requirements for inspection safety including applicable Occupational,Safety, and Health Administration (OSHA) requirements, such as requirements for working inconfined spaces and at heights. Advanced computer skills relate
AASHTO LRFD Bridge Design Specifications AASHTO Manual for Bridge Evaluation AASHTO Manual for Bridge Element Inspection FHWA Bridge Inspector's Reference Manual FHWA Hydraulic Engineering Circular No. 18 Code of Federal Regulations, 23 Highways Part 650, Subpart C
Aluminum bridge crane isometric 11 Steel bridge crane plan view 12 Aluminum bridge crane plan view 13 Bridge Crane Systems & Dimensional Charts Installation Parameters 14 250 lb. capacity bridge cranes 15 - 17 500 lb. capacity bridge cranes 18 - 21 1000 lb. capacity bridge cranes 22 - 25 2000 lb. capacity bridge cranes 26 - 29 4000 lb. capacity .
Recently, we were made aware of some technical revisions that need to be applied to the AASHTO LRFD Bridge Design Specifications, 6th Edition. Please replace the existing text with the corrected text to ensure that your edition is both accurate and current. AASHTO staff sincerely apologizes for any inconvenience.File Size: 2MBPage Count: 104Explore furtherAASHTO LRFD 2012 Bridge Design Specifications 6th Ed ( US .archive.orgAASHTO Issues Updated LRFD Bridge Design Guideaashtojournal.orgAASHTO Publishes New Manual for Bridge Element Inspection .aashtojournal.orgAASHTO LRFD Bridge Design Specifications. Eighth Edition .trid.trb.orgSteel Bridge Design Handbook American Institute of Steel .www.aisc.orgRecommended to you b
AASHTO Bridge Element Inspection Manual 12 1.5 How To Use This Manual Bridge inspection based on this manual consists of defining the elements (pieces of the bridge) and total quantities that exist at each bridge. The condition of each e
Hammersmith Bridge Suspension Bridge, 2 piers (1887) 210m 13m No, on road only Steps footway/ road Narrow traffic lanes, 20000 veh/day 3,872 1,923 5,795 Barnes Footbridge Deck arch bridge, 2 piers (1895) 124m 2.4m No, foot bridge only Steps Runs alongside railway bridge 1,223 256 1,479 Chiswick Bridge Deck arch bridge, 2 piers (1933) 185m 21m .
136 c8 bridge sr2038 186 f13 bridge sr1357 137 d7 culvert nc268 187 e25 bridge sr1345 138 c8 bridge sr2041 188 d7 bridge sr2230 139 c8 pipe sr2048 189 d26 culvert i-77 140 c140 culvert sr2061 190 d15 bridge us52 nbl byp 141 b20 bridge sr2064 191 d7 pipe sr2088 142 c20 bridge sr2067 192 d8 br
INS 02-003-AB Chapter 295, Laws of 2001 (SB 118) {High Risk Pool) INS 02-004-AB Small Group Health Insurance Underwriting INS 02-011-AB USA PATRIOT ACT OF 2001 INS 02-013-AB Notice of Insurance Department and Telephone Communications with Claims Department INS 02-018-AB Private Passenger Automob
add-ins can be easily installed by copying the .add-in file into the "add-ins/" folder in the tia portal installation directory add-ins can be activated or deactivated in the add-ins task card (by default add-ins are deactivated) additional information about the add-in like the author, description or the required permissions are also shown
Tank 6 API-653 In-Service, Internal Inspection Report less severe corrosion than the west perimeter. The average thickness of the sketch plates away from the west perimeter was 0.281”. Other than the perimeter corrosion noted, the remainder of the tank bottom showed no signs of significant metal loss and the thickness readings appeared consistent with the readings from the 2004 robotic .
