Police said the man was found along Route 8 at 5:08 a.m. and he was brought to Bridgeport Hospital.
It does not appear he was hit by a car.
The man did not have and identification.
He is described as a black male with “salt and pepper” balding hair, and a gray mustache and beard.
He is around 5-feet-10 and between 45 and 60 years old and weighs 220 to 240 pounds.
He was wearing a flannel shirt, work pants and black sneakers and had no other identifiable marks.
Anyone with information about the man should call Troop G, 203-696-2500 or text TIP711 with the information to 236748.