Two lanes are closed and traffic is very slow on the M621 westbound this lunchtime after a three-vehicle crash.
Highways England said at around 1.45pm that lanes one and two were closed westbound between junction one (Beeston/Farnley) and the M62/A650.
West Yorkshire Fire and Rescue Service were at the scene.
Metro Travel News tweeted that traffic was running "very slow".
Check back for updates.