Culverts were utilized any where a fill was built. They ranged any where from a grand design as this photo on the left shows to just a pile of stones that lined a creek bank to allow fill to be placed over it to allow a grade to be continueous from one side of the bank to the other. The one on the left is in the Fort Littleton area. The right photo is north of Somerset. The center photo is near Kregar east of Donegal, it shows the inside of the culvert.