A section of the A610 Nuthall Road is to remain closed into next week after a diesel spillage damaged the road surface.
The inbound carriageway remains closed from Cinderhill Island to Bar Lane following the spillage, which affected the stretch from the Tesco garage to Llanberis Grove.
The closure was first put in place after diesel was found on the highway on Wednesday 1 July, prompting highways and cleansing teams to work overnight to clear the site.
Following an assessment of the damage, the council said the road surface now has “unacceptably low skid resistance” and that the spillage could have both immediate and longer-term effects on the structural integrity of the road.
The council said it had no option but to resurface the affected stretch to make it safe for motorists.
Resurfacing work is due to begin this morning and is expected to continue into next week. The road will remain closed while the work takes place.
A further update is expected early next week.