Page:Historic highways of America (Volume 10).djvu/67

Rh In order to insure efficiency and permanency these repairs were made on the Macadam system; that is to say, the pavement of the old road was entirely broken up, and the stones removed from the road; the bed was then raked smooth, and made nearly flat, having a rise of not more than three inches from the side to the center in a road thirty feet wide; the ditches on each side of the road, and the drains leading from them, were so constructed that the water could not stand at a higher level than eighteen inches below the lowest part of the surface of the road; and, in all cases, when it was practicable, the drains were adjusted in such manner as to lead the water entirely from the side ditches. The culverts were cleared out, and so adjusted as to allow the free passage of all water that tended to cross the road.

Having thus formed the bed of the road, cleaned out the ditches and culverts, and adjusted the side drains, the stone was reduced to a size not exceeding four ounces in weight, was spread on with shovels, and