Restricted or neutral areas as described in SECTIONS
501.2, 501.8, and 501.9 above may be graded or filled only when the following
requirements have been complied with:
1. Surface drainage is provided to drain all
surface water on the graded or filled in areas away from the roadway in a
suitable manner and be deposited into the natural drain. Sub-surface drainage
shall be provided where required to prevent development of a high ground level
that will endanger the highway pavement.
2. The drainage opening underneath the area
is adequate to carry the water to its natural drain or its roadside ditches.
Pipe culverts installed under these areas shall be not less than fifteen (15)
inches in diameter.
provisions are made to separate the area from all traveled ways in order to
prevent its use for entrance or exit, or for vehicular parking, by constructing
concrete or other acceptable masonry curb that conform to the current edition
of the MDOT Roadway Design Standard Drawings around the perimeter of the
4. Restricted or neutral
areas' length, width and shape will vary at different locations. The lot
frontage, right of way width and many other factors will determine the size and
shape of such areas. When curbs are used to channelize areas they should be
constructed five (5) to ten (10) feet from edge of pavement, or a greater
distance if necessary to clear the prevailing shoulder width. Channelized areas
shall extend to the right of way line.