Civil Infrastructure Inspection 17 items
Bridge Seismic Retrofit Component Inspection
Condition inspection of installed seismic retrofit components including restrainers, isolation bearings, column jackets, and shear keys per the FHWA Seismic Retrofitting Manual.
FHWA Seismic Retrofitting ManualAASHTO Guide Spec for LRFD Seismic Bridge DesignCaltrans SDC
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Structure & Retrofit Scope
- NBI structure number *
- Date of inspection *
- Retrofit measures present (restrainers, jackets, isolation bearings, shear keys, catchers) *
- Are as-built retrofit drawings available for reference?
Restrainers & Connections
- Are cable/rod restrainers intact, properly tensioned, and free of corrosion? *
- Are restrainer anchorages, brackets, and bolts sound with no cracking? *
- Are seat extenders / catcher blocks in place and undamaged?
- Is the available support/seat length free of degradation?
Bearings & Isolation
- Are isolation/elastomeric bearings free of excessive deformation, bulging, or bond failure? *
- Are shear keys/lugs intact with no cracking or spalling of surrounding concrete? *
- Are bearing anchor bolts and keeper assemblies intact and tight?
Columns & Substructure Retrofit
- Are steel/composite column jackets free of buckling, corrosion, or debonding? *
- Is the annular grout between jacket and column intact?
- Are footing/cap-beam retrofits (overlays, prestressing) free of distress?
Rating & Actions
- Are retrofit components functioning as intended with no critical deficiencies? *
- Retrofit condition rating (0-9)
- Findings and recommended actions
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