The M23 motorway was closed in both directions after a body was recovered from the road.
The motorway was shut by police from junction eight at the M25 interchange to junction nine at Gatwick.
The incident is believed to have happened between 4.45pm and 5pm yesterday.
On Facebook Surrey Police said: "The M23 southbound between junctions 8 and 9 is currently closed due to a body being recovered from the road this evening (10 December), following a collision between a man and several vehicles.
"Enquiries are ongoing to establish the circumstances, but there is not currently believed to be any third party involvement.
"We are appealing for any drivers who were in the area between 4.45pm and 5pm and may have unwittingly collided with the man, or anyone who saw a man walking on the A25 Bletchingley Road Bridge, to please get in touch with us by DM or by calling 101 and quoting SYP-20231210-0563. Thank you."
The road reopened at around 1.30am this morning.
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