Drivers are being advised to avoid the M57 after a multi-vehicle pile up.
Traffic was held on the motorway on the northbound carriageway at Junction 6 for Kirkby and Liverpool after a crash at about 4.30pm.
Police said there had been a multi-vehicle collision.
Emergency crews began releasing traffic at about 5.15pm, but said that delays would take some time to clear.
Highways England added: "Please allow extra time for your journey as delays are starting to build."