A1M closed: Major motorway in West Yorkshire shut between J40 and J41 after 'police led incident'
12th Dec 2025, 6:39am
A major motorway in West Yorkshire is closed northbound this morning.
The A1M is closed northbound after a “police led incident”. The motorway is closed between J40 (near Pontefract) and J41 (M62/Knottingley).
The incident occurred shortly after 00:30 this morning. National Highways says: “Traffic was briefly held southbound following the incident, but police released traffic circa 01:45.
“West Yorkshire Police are carrying out investigation work. National Highways Traffic Officers and service providers are in attendance assisting with traffic management.”
Diversion Route
Road users travelling northbound are advised to follow the solid triangle diversion symbol on road signs:
- Exit the A1M using the Darrington off-slip and then take the exit slip road for the M62.
- Take the 1st exit and join the M62 westbound.
- Travel along the M62 and exit at J32A and follow signs to rejoin the A1M northbound.