The water main which burst at Holland Park roundabout on Thursday (September 8) morning is not expected to be fully repaired until this weekend.
Thames Water said on Friday (September 9) its engineers were at the scene working on the fault throughout the night.
As a result one lane of the A3220 West Cross route southbound will remain closed while the emergency works continue.
A spokesperson said this is expected to be completed sometime over the weekend.
The burst happened on the Kensington and Chelsea side of the roundabout, beside Shepherd’s Bush station and Westfield shopping centre .
A spokesperson said: “We’re sorry to drivers affected by our burst pipe. Our teams are working hard to finish the repair and aim to get the lane opened again at the weekend”
She also said no customers suffered water loss as a result.