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(1) A ditch shall be provided on both sides of a through-cut and on <br />the inside shoulder of a cut-and-fill section, with ditch relief cross <br />drains spaced according to grade. Water shall be intercepted before <br />reaching a switchback or large fill and drained safely away in <br />accordance with this Section. Water from a fill or switchback shall be <br />released below the fill, through conduits or in riprapped channels, and <br />shall not be discharged onto the fill. Drainage ditches shall be placed <br />at the toe of all cut slopes formed by the construction of roads. <br />(2j On flat sections of Class I Roads where rolling topography is <br />insufficient to provide natural ditch drainage, the road grade shall be <br />undulated to provide for free flow of water in the ditch section. Road <br />sections may be constructed to elevate the road surface above the <br />original ground surface to facilitate drainage. <br />c:~wo~ew~~erswuan.aev <br />~~o~~~~m 816-190Ra Revised - August 1992 <br />