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TABLE 3
<br />1. Anal sis of Trans ortation S stem
<br />Eugene/Springfield metropolitan average vehicle trip length 4.38
<br />Eugene trip end peak vehicle miles; percentage on Eugene's arterial and collector streets 0.35
<br />Total lane miles of arterial and collector system, excluding turn lanes [arterial = 59.4%; collector = 40.6% ] 404.12
<br />Average number of lanes per mile of arterials and collectors 3.26
<br />Eu ene avers a one wa tri len th for arterial and collectors miles er tri 4.38 * 0.35 * %2 0.7665
<br />2. Arterial and Collector Street System Analysis (Linear Mile Costs):
<br />Existing level of service "D" for Roads; number of vehicles per hour (capacity per lane mile) 675
<br />Linear Section Total Construction Costs:
<br />D Typical collector street width 46 feet D Typical arterial street width" 66 feet
<br />D Typical collector construction cost per linear feet $209.19 ~ Typical arterial construction cost per linear feet $299.66
<br />a Total cost per linear mile, 46' collector
<br />[ $209.188 * 5,280 linear feet per mile] $1,104,513 D Total cost per linear mile 66' arterial
<br />[ $299.265 * 5,280 linear feet per mile] $1,582,194
<br />Average Linear Section Costs:
<br />~ Average construction cost per linear mile
<br />[ ($1,104,513 *.406) + ($1,582,194 * .594) ]
<br />$1,388,256 ~ Average construction cost per linear foot
<br />[ $1,388,256 / 5,280 linearfeet per mile]
<br />$262.93
<br />D Average non-assessable cost /linear mile [53.9%] $748,270 ~ Average assessable cost /linear mile [46.1 %] $639,986
<br />~ Average non-assessable cost per linear foot
<br />[ $748,270 / 5,280 linear feet per mile j $141.72 a Average assessable cost per linear foot
<br />[ $639,986 / 5,280 linear feet per mile ]
<br />$121.21
<br />Assessable and Non-assessable Costs:
<br />a Non-assessable cost per lane mile {excludes
<br />administration and engineering charges}
<br />[ $748,270 / 3.26 (average # of lanes per mile) ]
<br />$229,531 D Assessable cost per lane mile {excludes
<br />administration and engineering charges}
<br />[ $639,986 / 3.26 (average # of lanes per mile) ]
<br />$196,315
<br />a Non-assessable administration/engineering costs
<br />applied [ $229,531 * .25 ]
<br />$57,383 ~ Assessable administration/engineering costs
<br />applied [ $196,315 " .25 ] $49,079
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<br />D Total Assessable Cost er
<br />p lane mile
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<br />$196,315 49 079
<br />
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<br />245 393
<br />__
<br />ntersection Costs (based on the linear foot unit costs and the average number of intersections per lane mile):
<br />~ Cost per lane mile {excluding administration
<br />and engineering costs }
<br />$26, 355
<br />___ _ _ -
<br />Traffic Signal Costs:
<br />D Signalized intersections in Eugene system 144 ~ Total # intersections with traffic signals 198
<br />D Signalized intersections, joint with state system 54 ~ Eugene equivalent signals ((54 / 2) + 144 ] 171
<br />~ Percent signalized intersections per lane mile m Adjusted signalized intersections per lane mile
<br />[ 171 / 404.12 ] 0.4231 {with downtown high density reduction factor} 0.35
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<br />Bridges and Other Structure costs:
<br />~ Past project costs -small structures, short span bridges {'/z of bridge inventory} $6,483,908
<br />D Past project costs -Ferry St. Bridge and Ferry Street Bridge overpass [ $2,502,958 + $4,274,688 ] $6,777,646
<br />a Administration and engineering costs added to past project costs [ ($6,483,908 + $6,777,646 ) " 0.25 ] $3,315,389
<br />~ Total costs for past projects, bridges and other structures [ $6,483,908 + $6,777,646 + $3,315,389 ] $16,576,943
<br />l Arterial and Collector Street Light Construction Costs:
<br />D
<br />.,Standard # of.,, ...,-_..^__..
<br />ff _„.street lights per vehicle mile (capacity per lane mile) 27 Cost per arterial street light $4,300
<br />4. Summa of All Trans ortation S stem SDC Com onents:
<br />Cost per Street System Component; per trip $597.45 Cost per off-street bicycle path component; per trip $68.05
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<br />City of Eugene SDC Methodology Transportation, PageB-5
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