Road Grades.
Some of our country roads in Utah have been very well constructed as far as the cross section is concerned, but no particular attention has been paid to the grade of the road in the direction of its length except when work has been done to reduce the grade on steep pitches.
Roads should have a grade or slope of about 1 to 80, or 1¼ per cent, in the direction of their length, so that water will not remain in any small ruts that may be formed, but will flow along them to a point where it will flow from the rut into the drain ditch.
Drain Ditches.
The slope of the drain ditches should be the same as the slope of the road and their cross-sections should be practically the same at all points, so that all the water flowing into them will flow promptly to a nearby cross drain that will carry it entirely away from the road.
Seven Rod Street
Fig. 5
In many cases unsightly, uneven holes are dug on either side of the roadway in order to secure material for making the crown of the road and the water, which gathers in these, keeps the foundation under the road always soft.
