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9 <br /> <br />Appendix B <br />Calculating Trail Costs <br />WSB provided total trail mileage for each PSA. This is multiplied by midpoint of the shared use <br />path cost estimate, also provided by WSB, to find total cost of planned trail development in each <br />area. <br />Trail costs are also broken down between pre and post 2040 development. This is done by <br />multiplying the cost per PSA by the percentage planned to be completed by 2040 and post <br />2040. The percentage of trails developed in each time period comes from the 2040 Utility <br />Staging Plan. The pre and post 2040 figures are divided by the number of parks in each PSA to <br />get a figure for Trail Expenditure for every park. <br />There are currently no proposed trails in PSAs 8, 13, 14, 15, 16, 17 and 20 in the Parks, <br />Greenways and Trails Plan. Additionally, WSB identified 18.74 miles of arterial trails which fall <br />outside of any PSA. Costs are calculated for this set of arterial trails using the same methods <br />described above but are not assigned to any park or PSA in particular. These costs are factored <br />into tabulations comparing total expenditures and revenue. Trail costs are estimated at <br />$351,600 per mile (2023 estimate). <br /> <br /> <br />182