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Name of rating | Definition |
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Material condition rating | Rates the general material condition of the structure, like deterioration to barrel material and crack |
Culvert alignment rating | Accounts for irregularities longitudinally to the barrel or imbalanced settlement of barrel segments |
Shape rating | Accounts for barrel flattening, buckling, bulging, out-of-roundness, and other signs that the shape is not equal to original design |
Seams or joints rating | Rates the extent of backfill infiltration and water exfiltration from open joint or seepage at the joints |
Slab rating | Slab top culverts only. Accounts for leakage, deterioration, and structural adequacy of the slab |
Abutments rating | Slab top culverts only. Accounts for movement, material defects, and scour of the foundation of the abutments |
Headwall rating | Accounts for scour or undermining around footings and at the inlet and outlet of the culvert |
End structure rating | Rates structural condition of catch basins, inlets, manholes, junction chambers or other end structures |
Channel alignment rating | Accounts for channel or flow shift caused by changes in the drainage channel |
Channel protection rating | Rates condition of any used channel protection structure |
Waterway blockage rating | Accounts for the amount of sediment builds up that blocks the waterway of the culvert |
Scour rating | Accounts for existence and size of scour holes |
Pavement rating | Rates the condition of the approach pavement |
Guardrail rating | Accounts for sag, rotation, or misalignment of the guardrail |
Embankment | Accounts for settlement, bulging or erosion of the approach embankment |
General appraisal | The lowest rating of the 15 others |
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