Drivers have been warned to expect disruption as police have been called to a smash on the M621 near Leeds.
West Yorkshire Police have been called to a multi-vehicle smash on the M621.
One lane is currently CLOSED westbound from junction 3 (Leeds).
UPDATE: The earlier collision on the M621 westbound at J3 near Leeds has been cleared.
A spokesman added: "Fully open again and traffic is light."