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j. Inside road ditch in all cuts which will be at least 1.5 feet deep and 2:1 side slopes <br />k. Maximum fill slope - 2.OH:1.OV <br />1. Maximum cut slope - 1.51-1: LOV <br />m. Minimum horizontal curve - 200 feet radius. An existing curve immediately north of the <br />detour is less than 100 feet in radius. <br />n. All vertical curves have a sight distance of at least 140 feet except for the curve at 18+52 <br />which is sharper due to the need to accommodate the crossing of the West Lateral Ditch <br />(pipeline). This grade cannot be changed for pipeline hydraulics. <br />o. Prior to chip seal, the road surface will be treated with MC -70 or comparable product <br />p. As seen on the profile on Map 2.05.3(3)-9, the maximum grade of the route is 11.0% in a <br />length of 220 feet from station 28+80 to 31+00. This is the section where the road <br />descends toward Tuttle Draw. The County Engineer preferred the steeper grade in this <br />section over a shorter sight distance. <br />q. No sections of the roadway or fill are within the 100 year floodplain of Tuttle Draw. <br />r. Based upon the horizontal curves and super elevation of 4%, the recommended speed of <br />the detour road will be 25 miles per hour which is comparable to that of the existing <br />route. There will be no stop signs or passing lanes for the main route. The existing route <br />has straight road but does have a stop sign and a 90 degree turn. The detour length is <br />4,550 feet while the existing road to get to the same point is 4,800 feet in length. <br />s. In areas where the road drainage must pass from one side to the other, 16" diameter <br />corrugated metal pipes will be placed at approximate 250 feet intervals below the <br />roadway. These installations will follow State Highway Department specifications. <br />Culverts exiting on fill will be protected from erosion by use of riprap or other means. <br />t. Montrose County has agreed to the plans and has approved of the actual construction <br />based on inspections, reports, etc. Once the road is acceptable, Montrose County will <br />assume the road and will conduct the maintenance. This was done immediately after its <br />installation in the year 2002. <br />u. Once the detour is abandoned, it will be reclaimed. Chip seal surface will be excavated <br />and stockpiled for use in the permanent construction of BB Road west of the Sunshine <br />Ranch Corner. The exact location of the stockpile area has not yet been determined. <br />The road was designed using an accurate aerial topographic map, site survey points for the road <br />centerline and Carlson Software Civil Engineering Module. As of the Mid Term review of 2006, <br />the BB Detour Road has functioned well since its installation and when the paved portions of BB <br />Road and 2700 Road are restored, the BB Detour Road will be removed. <br />P. Northeast Perimeter Haul Road <br />Professional engineer certified specifications for the intersection with 2700 Road can be found in <br />Attachment 2.05.3(3)-8. <br />Section 2.05.3(3) Page 33 September 2017 (TR -81) <br />