Westbound M65 near Blackburn down to one lane for emergency resurfacing
and live on Freeview channel 276
The lanes are closed for resurfacing after a serious crash on the motorway which injured five people on Sunday afternoon (June 11).
National Highways said the lanes are likely to be closed until this evening after a diesel oil spillage damaged sections of lane one and lane two.
These will need to be resurfaced today with only lane three open past the scene for much of the day.
Drivers are advised to delay their journeys or choose alternative routes to avoid congestion.
The crash, involving five vehicles, happened shortly before 3pm yesterday and led to a full closure of the westbound carriageway for a police incident investigation.
The eastbound carriageway was also closed during the afternoon to allow an air ambulance to attend the scene.
An ambulance service spokesperson said a male patient had suffered a head injury and a female had received a chest injury. Both were transferred to the Royal Blackburn Hospital.
Three other people with minor injuries were also treated.