Drainage Considerations at Rural Highways -
Drainage is an inseparable, fundamental part of highway design. The main goal of a highway drainage system is to “keep water out of the road itself”. The reasons are obvious, such that the carrying capacity of the road will decrease, and the road will slowly erode, once the water keeps coming into the road cross section. Another important consideration is driving safety. If the water ponds on the road surface, obviously this will lead to unsafe driving conditions. To accomplish these goals, the following aspects need to be considered: Slope of the road surface along the road main axis or transverse axis toward ditches, which is one of the main […] Read More
