Section 672-15-05 - Maintenance and Abandonment(Refer to Handbook, Section 6)
1. Measures should be undertaken to maintain water diversion structures so as to control water runoff and avoid sedimentation of water.2. Ditches, culverts and other water control installations should be inspected, cleaned out and maintained on a regular basis in order to remove debris and to assure normal functioning at all times.3. Maintenance of water control installations should continue until the road is discontinued and put to bed by pulling of culverts, installation of water bars or other measures which are effective in stabilizing the area. Where utilized, water bars should:
a. be constructed and maintained across the road at intervals which are sufficient to effectively control water runoff. The following table should be used as a general guide in determining appropriate spacing of water bars:
Road Grade Percent | Distance Between Water Bars feet |
1-2 | 250 |
3-5 | 200-135 |
6-10 | 100-80 |
11-15 | 80-60 |
16-20 | 60-45 |
21+ | 40 |
b. be constructed at approximately 30 degrees downslope from the line perpendicular to the center line of the road;c. be constructed so as to effectively prevent surface water from flowing over or under the water bar; andd. extend sufficient distance beyond the traveled way so that water does not reenter the road surface.01-672 C.M.R. ch. 15, § 05