Reference is made to the current edition of the AASHTO Roadside Design Guide, and the recommendations therein as are applicable to the location and construction of driveway, road and street connections to the highway. The cut and fill slope requirements for these connections are listed below in Paragraphs 301.1 and 301.2. Culverts and sidedrains under such connections must be of a length sufficient to accommodate the side slope requirements listed below in Paragraphs 301.1 and 301.2.
In areas beyond the clear zone, the slopes may be increased but, in no case, shall the slopes be steeper than three to one.
37 Miss. Code. R. § 1-7501-04013-301