Two “scores” will be assigned to each crossing:
- Culverts with performance problems will be flagged.
- A condition score (0.0-1.0) is calculated for each crossing, as follows:
- For each culvert, assign a score for each of the three variables below (V1, V2, V3) using data from the Condition Assessment Form.
- The minimum score resulting from V1, V2, or V3 is the overall condition score for each culvert. The score will range from 0 (most critical condition) to 1 (good condition).
PLUS
If any Section is marked “Unknown” then add “not fully assessed” to the score unless the score is 0.0. For example: “0.7-not fully assessed” or “0.3-not fully assessed” but not “0-not fully assessed”
- For multiple culvert crossings, the overall condition score for the crossing is the lowest condition score among the culverts that make up the crossing.
V1 Structural Deficiency – Highly Critical
|
Variables marked “Critical” |
Score |
|---|---|
|
Any one of the following |
0.0 |
|
Cross-Section Deformation |
Inlet or outlet |
|
Structural Integrity of Barrel |
Inlet or outlet |
|
Footings |
Inlet or outlet |
|
Level of Blockage |
Inlet or outlet |
V2 Structural Deficiency – Critical
|
Variables marked “Critical” |
Score |
|---|---|
|
Any three or more of the following Any two of the following Any one of the following |
0.0 0.1 0.2 |
|
Buoyancy or Crushing |
Inlet or outlet or both counts as 1 |
|
Invert Deterioration |
Inlet or outlet or both counts as 1 |
|
Joints and Seams |
Inlet or outlet or both counts as 1 |
|
Longitudinal Alignment |
Inlet or outlet or both counts as 1 |
|
Headwall/Wingwalls |
Inlet or outlet or both counts as 1 |
|
Flared End Section |
Inlet or outlet or both counts as 1 |
|
Apron/Scour Protection |
Outlet |
|
Armoring |
Inlet or outlet or both counts as 1 |
|
Embankment Piping |
Inlet or outlet or both counts as 1 |
|
Variables marked “Poor” |
Score |
|---|---|
|
Any three or more of the following Any two of the following Any one of the following |
0.0 0.1 0.2 |
|
Cross-Section Deformation |
Inlet or outlet or both counts as 1 |
|
Structural Integrity of Barrel |
Inlet or outlet or both counts as 1 |
|
Footings |
Inlet or outlet or both counts as 1 |
|
Level of Blockage |
Inlet or outlet or both counts as 1 |
V3 Structural Deficiency – Poor
|
Variables marked “Poor” |
Score |
|---|---|
|
For each of the following identified as “Poor” |
0.1 pt. deduction from 1.0 down to a minimum score of 0.3 |
|
Buoyancy or Crushing |
Inlet or outlet or both counts as 1 |
|
Invert Deterioration |
Inlet or outlet or both counts as 1 |
|
Joints and Seams |
Inlet or outlet or both counts as 1 |
|
Longitudinal Alignment |
Inlet or outlet or both counts as 1 |
|
Headwall/Wingwalls |
Inlet or outlet or both counts as 1 |
|
Flared End Section |
Inlet or outlet or both counts as 1 |
|
Apron/Scour Protection |
Outlet |
|
Armoring |
Inlet or outlet or both counts as 1 |
|
Embankment Piping |
Inlet or outlet or both counts as 1 |