Intervention levels

Drainage

Area Requirement Timescales
Ditch/grip/inlet or outlet/filter drain Causing flooding to the highway or third party property Within 2 hours
None Within 5 days
None Within 28 days
Gully/catchpit (drain) silt level Causing flooding to the highway or third party property Within 2 hours
None Within 5 days
None Within 28 days
Cover damage / iron work A missing inspection chamber cover, gully or grating or other ironwork anywhere within the highway. Within 2 hours
Cover/grating broken Within 5 days
Rocking/rattling or excessive polishing Within 28 days
Cover level differences Carriageway: Raised or lowered by greater than or equal to 100mm. Footway/Cycleway: Cover raised or lowered by greater than or equal to 40mm. Within 2 hours
Carriageway: Raised or lowered by greater than or equal to 60mm and less than 100mm. Footway/Cycleway: Cover raised or lowered by greater than or equal to 30mm and less than 40mm. Within 5 days
Carriageway: Raised or lowered by greater than or equal to 40mm and less than 60mm deep and at least 300mm Footway/Cycleway: Cover raised or lowered by greater than or equal to 20mm and less than 30mm. Within 28 days