The M55 was closed between Blackpool and Preston on Thursday after reports of a man walking on it.
Emergency services were called at about 1.15pm to the eastbound carriageway of the motorway near J4, after police received calls to say a man was walking on the motorway or hard shoulder.
The carriageway was closed until 1.40pm while the man was located, and motorists faced major tailbacks.
He was taken to hospital for checks.
Earlier on Thursday, police were called to reports of ducks on the M6 between J29 and J28 at Leyland.