Rules of Orientation and Member Numbering Label Conventions

1. Rules of Orientation and Member Numbering Label Conventions Session 3

2. Purpose • Make some sense of order and provide a clear description of just exactly where the deficiency is located. • Personnel do not always have a set of bridge drawings. • Bridge plan labels are not uniform • Minimizes errors by making sure that the right member is repaired.

3. Systems of Orientation and how they might work: • Increasing mileposts or city street addresses. • Increasing mileposts looking ahead on line.

4. Systems of Orientation and how they might work: • Orientation by Upstream & Downstream • Quite often the inspector can not discern what is upstream or downstream (i.e. tides, dry creek bed). • Compass Map Direction vs Route Direction • Most of the time, there is a considerable difference between these two directions.

5. Bridge Numbers • NBI Number • Number that is reported to FHWA. • Historically this number has changed over time. • Local Bridge Number • Number used by the local agency. • Bridge Design Number • Number used by the Design Firm. • Structure Plans can contain multiple structures.

6. Bridge Nomenclature Describing where the problem is?

7. Rules of Orientation and member numbering • Orientation: Look ahead at increasing mileposts or city street addresses. • All bridge items are numbered in consecutive order from the leading end of the bridge and left to right.

8. Increasing Mileposts Bent 3 Bent 4

9. Bridge Nomenclature Increasing Mileposts Span 9 Span 11

10. Span 3 Girder 1 Span 3 Girder 2 Span 3 Girder 3

11. Bent 3, Column 5 Bent 3, Column 4

12. Span 5A Span 5B Bent 5B Column 4 Span 5 Bent 5A Column 4

13. Upper Chord U1 U3 L0 L4 Panel Point Lower Chord

14. Increasing Mileposts U6R U8RL9R L12RU13R L5R

15. Questions?

16. Session 4: National Bridge Inventory (NBI) Data – What is it used for?

17. Recording and Coding Guide • Developed by the FHWA • Provides coding and recording instructions for federal submittals • Provides consistency amongst data collected in U.S.

18. Structure Inventory and Appraisal Sheet (SI&A Sheet) • This is the NBI Data • Tabulation of information about individual structure • Not an inspection form but a summary of bridge data

19. Sufficiency Rating Formula • A calculated value indicative of a bridges sufficiency to remain in service • Uses NBI data • 0 to 100 scale • Congress uses SR to apportion HBRRP Funds to the States

20. Sufficiency Rating Formula • Based on 4 Factors • S1: Structural Adequacy and Safety • S2: Serviceability and Functional Obsolescence • S3: Essentiality for Public Use • S4: Special Reductions

21. S4:Special Reductions • 13% max • Influential NBI Items • (43) Structure Type, (19) Detour Length

22. Questions?

23. Bridge Condition Assessment Schemes, how is it used, and for what purpose Session 5

24. Assessment Rating Schemes • NBI Ratings • Element Level Ratings

25. Purpose of the NBI Condition Assessment Rating Scheme • Report Information to FHWA in accordance with the Code of Federal Regulations. • Satisfy the National Bridge Inspection Standards (NBIS – 23 CFR 650.3).

26. Purpose of the Element Level Condition Assessment Rating Scheme • To Drive the Bridge Management System (BMS) two items were needed: • Detailed list of bridge parts (elements) • The bridge elements had to be quantified

27. Purpose of the Element Level Condition Assessment Rating Scheme • A Bridge Management System must • Provide information for managing assets based upon available funding schemes • Provide information to decision makers

28. Questions?

29. Oregon’s Bridge Inspection Pocket Coding Guide Session 6

30. “www.odot.state.or.us/tsbbridgepub” • Element Coding Guide - Where can I get a copy?

31. “www.odot.state.or.us/tsbbridgepub”

32. Purpose of the NBI Condition Assessment Rating Scheme

33. List of Bridge Elements

34. List of Bridge Elements

35. Reinforced Concrete Element

36. Element Condition State Photos

37. Bridge Inspection Business Rules

38. NBI Coding Guide (Dynamic)

39. Questions?