LoadPath PDH — PE/NICET supplemental PDH (not FHWA/NBIS refresher training).

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InspectionOnline self-study

Inspection Types and Intervals Under the NBIS

1 PDH · about 60 minutes · Course no. BR-I02 · Instructor: Michael Craig, PE

About the instructor

Michael Craig, PE is Senior Vice President and Southeast Director at Strinteg Corporation, leading bridge inspection and structural engineering across eight states and Puerto Rico. In 27+ years he has inspected over 4,000 structures and completed 3,000+ load ratings and 160+ load tests. He has managed repair and preservation design for complex bridges, including cable-stayed bridges. He holds PE licenses in twelve states, DC and Puerto Rico, SPRAT Level 1, and FAA Part 107 credentials.

The 2022 NBIS replaced fixed calendar intervals with risk-based intervals. This course covers every inspection type, the default, reduced and extended intervals, and the tolerances owners must track.

⬇ Download study guide (PDF)

Learning objectives

  • Distinguish the NBIS inspection types
  • State default routine, underwater and NSTM intervals
  • Explain criteria for reduced and extended intervals
  • Apply interval logic to example bridges

Outline

  1. The inspection types
  2. Routine intervals — Method 1
  3. Routine intervals — Method 2
  4. Underwater and NSTM intervals
  5. Tolerances and next inspection
  6. Part A — Why intervals matter
  7. Part B — The inspection types revisited
  8. Part C — Method 1 in detail
  9. Part D — Method 2: risk-based intervals
  10. Part E — Underwater intervals
  11. Part F — NSTM intervals
  12. Part G — Tolerances and computing due dates
  13. Part H — Changing an interval
  14. Part I — Initial, damage, in-depth and special inspections in scheduling
  15. Part J — Applying it: a mixed inventory
  16. Part K — How intervals evolved
  17. Part L — Program-level planning
  18. Part M — Case study: an interval decision under pressure
  19. Part N — Frequently asked questions
  20. Part O — Self-check and summary
  21. Part P — Access, equipment and personnel by inspection type
  22. Part Q — Recording intervals in the inventory and the file
  23. Part R — Common interval mistakes
  24. Part S — Exercise 2: due dates and decisions
  25. Part T — The consultant's role in interval decisions
  26. Open the course (31 screens, 2 knowledge checks)
  27. Final quiz — 10 questions, 70% to pass

References

  1. 23 CFR Part 650, Subpart C — National Bridge Inspection Standards (final rule published May 6, 2022)
  2. FHWA, Bridge Inspector's Reference Manual (BIRM), FHWA-NHI-12-049, 2012 (as revised)