Roads Management and Maintenance Plan 2023 - 2028
Appendix 17 – Defect Investigatory Levels
Road Defects and Investigatory Levels Guide
Note – All measurements are in mm.
Carriageway
| Investigatory level |
|---|
| Potholes > 150 dia, missing slabs, sunken tracks, failed reinstatements and low, loose or damaged slabs or ironwork | > 40 |
| Depression or Hump > 2000 long and 600 wide | > 40 |
| Ironwork | Damaged or Missing |
| Damaged safety barrier | Bent, Broken or Missing |
| Blocked Gullies | All |
| Flooding, standing water | >25 |
| Road Signs | Damaged, Faded or Missing |
| Road Markings or Studs | Worn or Missing |
| Vegetation | Obscuring sight lines or overhanging Carriageway |
Footways, Footpaths, Roads in Conservation Areas, Shared Surfaces and Car Parks
| Defect | Investigatory level |
|---|
| Potholes > 100mm dia, missing slabs or kerbs, Vertical Projections (Trips), sunken tracks, failed reinstatements and low, loose or damaged slabs or kerbs | > 20 |
| Depressions or Humps > 600 wide (subsidence or heave) | > 20 |
| Ironwork | Missing |
| Damaged Pedestrian Barriers and handrails | Bent, Broken or missing |
| Standing Water > 50% of Footpath width | >25 |
| Road Sign | Obstructing Footways, Footpaths or Cycleways. |
Public Lighting, Lit Signs or Bollards
All electrical faults will have fixed response times as below to reflect the seriousness of the defect.
| Defect | | |
|---|
| Missing or open door | All | 1 |
| Broken or exposed wiring | | 1 |
| Significant structural damage | | 1 |
| Loose Lantern | | 1 |
| Lantern out or missing | | 2 |
