Motorists faced another morning of delays on the main route into Halifax after a water main burst on Godley Lane on Sunday.
There is heavy traffic and possible delays in both directions while Yorkshire Water carry out essential repairs near Shibden Park.
Temporary traffic lights are currently in place, but Yorkshire Water say the work will be completed by October 14 at the latest.
A Yorkshire Water spokesperson said: “Essential repair work to Godley Lane is currently being carried out due to a significant burst water pipe incident that occurred late on Sunday night.
“We would like to apologise for the traffic this has caused this morning and re-assure commuters that we are doing our best to fully re-open this busy stretch of road as soon as we can.
“In the meantime, temporary traffic lights are in place for safety reasons until the the road has been fully repaired.”
Mark Thompson, Calderdale Council’s director of economy and environment, said:“We are working closely with Yorkshire Water to help them with traffic management whilst they repair the road on Godley Lane at Stump Cross.
“As well as temporary lights, traffic management staff are on site from 7am to 7pm to help keep traffic moving as smoothly as possible.
This will continue until the road has been fully repaired. However, due to the sheer volume of traffic at peak times, we ask drivers to allow extra time for journeys whilst the essential Yorkshire Water works are underway to repair the significant damage from the burst water pipe.
“We are monitoring the situation.”