The A19 is currently closed near Crathorne
The A19 near Crathorne has reopened after being closed for almost five hours.
Emergency services were called to the area between the A174 Parkway and A67 at Crathorne shortly before 09:40 BST.
Cleveland Police said motorists reported concern, external for a man seen falling from the road. Officers have confirmed a body was found.
They said there were no suspicious circumstances.
A forces spokeswoman said: "Our thoughts are with the man's family and friends, as well as those motorists who were present at the time.
"We would like to thank all those motorists who are or have been affected by the road closures, we appreciate their understanding and co-operation."
