Extended Inspection Interval
Inspection intervals up to 72 months are allowed provided all the following criteria are met:
- Underwater Inspection Condition (Item B.C.15) ≥ 6 [Substructure Condition Rating (Item 60) ≥ 6 or Culvert Condition Rating (Item 62) ≥ 6]
- Channel Condition (Item B.C.09) ≥ 6 [Channel and Channel Protection Condition Rating (Item 61) ≥ 6]
- Channel Protection Condition (Item B.C.10) ≥ 6 [Channel and Channel Protection Condition Rating (Item 61) ≥ 6]
- Scour Vulnerability (Item B.AP.03) = A or B [Scour Critical Bridges (Item 113) = 5 or 8]
- Scour Condition Rating (Item B.C.11) ≥ 6