It may be justified where anticipated maintenance costs will be high due to erosion by pedestrians, wind, small amounts of water, or other causes. High landscape maintenance costs caused by inadequate moisture, sunlight, etc., may also justify use of full slope paving. Elaborate slope paving designs should be avoided. The District Landscape Architect will provide aesthetic input and locations for waterline crossover conduits. Landscaped bridge end slopes may be justified when adjacent slopes are landscaped and when landscaping is compatible with adjacent development.
Bare slopes have minimum initial costs and maintenance costs vary with the site.
Bare bridge end slopes may be justified at rural sites and other areas where anticipated maintenance activity will be low. The District will design the slope treatment and include the details with the road plans.