Patrols were called to the reports of "horsing around" on the M65 between junctions three and four and were forced to put a block on at around 11.30pm on Thursday October 26.
The horse was "reined in" by patrols who had been "saddled" with the unusual job.
Police say the horse "neeiiggghh-ver meant any harm."
No horses or people were injured during the incident.