Motorists have been warned to expect heavy traffic on the M62 this afternoon.
Highways England warned that a large vehicle, described as an "abnormal load", had broken down on the westbound carriageway between junction 25 (Brighouse) and junction 24 (Ainley Top).
They said that congestion in the area had started to pick up.
Additionally, heavy traffic has been reported westbound between junctions 28 (Tingley) and 27 (Gildersome/Birstall).
Pictures show vehicles queuing on the carriageway, though a cause of congestion is not yet known.