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1 <br />Access <br /> <br />1 <br /> <br />1 <br /> <br /> <br /> <br />1 <br />t <br />1 <br /> <br />All traffic for trucks and employees will enter from Ridge Road. The access point is <br />approximately one half mile north of South Lake Gulch Road. Here Ridge Road is on a straight <br />alignment and flat terrain. This sight distance, both north and south, is more than adequate. <br />Except for local deliveries on Ridge Road, all the trucks will tam left and head south on Ridge <br />Road. At the intersection with South Lake Gulch Road, most of the trucks will turn north and <br />the smaller percentage will tam south. <br />The intersection of Ridge Road and South Lake Gulch Road was surveyed and is represented on <br />Figure 3.H.4(2). This intersection has been reviewed for sight distance length and fuming <br />movement to assure safe and efficient operation of vehiculaz traffic on South Lake Gulch Road. <br />Ridge Road meets South Lake Gulch Road at a "T" intersection at approximately a 70 degree <br />skew and is posted for a stop condition. <br />The measured sight distance northwest of Ridge Road is 350 feet and the measured sight distance <br />south of Ridge Road exceeds 1000 feet. The posted speed limit for South Lake Gulch Road <br />northwest of Ridge Road is 25 mph and south of Ridge Road is 35 mph. According to Table <br />203.2A of the Colorado Department of Transportation 1990 Roadway Design Manual, the <br />Desirable Stopping Sight Distance for these posted speeds aze 150 feet and 250 feet respectively. <br />The measured sight distances, therefore, exceed these distances significantly. The Roadway <br />Design Manual was further reviewed for possible operating speeds at 10 mph above the posted <br />speed limit and the measured sight distances were found to exceed the distances provided at <br />these speeds as well. Passing sight distances were not reviewed as South Lake Gulch Road is <br />striped as a no passing zone. <br />Regazding turning movement, the 60 foot radius on the north side of Ridge Road at South Lake <br />Gulch Road exceeds the Simple Curve Radius With Taper criteria for all Design Vehicles as <br />provided in Table 405.4A of the Roadway Design Manual. The south side of Ridge Road at <br />South Lake Gulch Road now has a 30 foot radius. It will be increased to a 60 foot radius by <br />adding pavement. These curve radii will allow right taming truck movements without invading <br />[he opposing lane. <br />Comparing the traffic volumes to the CDOT Access Code, it is determined that no acceleration <br />or deceleration lanes are necessary on South Lake Gulch Road. <br />Safeq~ plan <br />' Truck drivers will be informed that speed limits and all County regulations will be strictly <br />adhered to. Also, through the use of signs at the quarry access at Ridge Road, truck drivers will <br />be informed that only local deliveries on Ridge Road can tam north. Truck drivers found in <br />' violation will not have their trucks loaded at the Castle Rock Quarr}~. <br /> <br />' 26 <br />