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Cost Estimates and Effectiveness Evaluation <br /> Planning-level cost estimates were prepared for each concept. These estimates use unit cost estimates <br /> multiplied by estimated quantities for key elements such as pavement and shoulder area, as well as <br /> other major items such as earthwork, erosion control, and traffic control. <br /> Cost Estimates <br /> The cost estimates for intersection improvements on CSAH 5 at CR 63 (Green Valley Road), 175th <br /> Avenue, and CSAH 56 (Ramsey Boulevard) assumed full highway reconstruction within the limits of <br /> geometric improvements. The roundabout cost estimate is a general cost based on the size and <br /> configuration of the concept. For the realignment concepts it was assumed the county road would <br /> remain a rural typical section with no signals, or shared use paths, and intersection lighting only. A <br /> conservative pavement section was included to determine pavement, excavation, and subgrade costs. <br /> A detailed fee sheet is included in the appendix. <br /> Cost Savings from Improvements <br /> Year 2040 crashes were estimated using the existing crash data and existing year and year 2040 daily <br /> volumes at each study area intersection.The expected reduction in crashes were calculated by applying <br /> the crash reduction factors for each concept to the year 2040 crashes.To convert the crash reductions <br /> into a dollar amount, the crash cost for each severity type was applied to the reduction in that <br /> corresponding severity. The crash costs for each crash severity were provided by the Hi <br /> ghmay Safety <br /> Im�rove�nent Progvam from the Minnesota Department of Transportation. The expected crash cost <br /> savings are shown in Table 17 to Table 22. <br /> Table 17: Expected Cost Savings from Improvements-CSAH 5/CR 63(Green Valley Road) <br /> Crash Severity Cost per Crash Recorded Crashes Crash Reduction Savings/5 Years <br /> K $1393009000 0 <br /> A $7509000 0 <br /> B $2309000 0 <br /> C $1209000 0 <br /> PD $139000 2 0.68 $89840 <br /> Total $89840 <br /> 27 <br />