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' ~-.. _._ ,~. te-htg{~yvayg-are-i-rtter~ectiorts-witf~ <br />~;,TL~~e ' 7tsrseetiari<s-on-the-sta <br />c.. ~ .~ _...._ ~ ~,. c ai, ee __...,.~ed--ag@ne-ha~f: } TfIE' <br />.. - Eagene~-GVIIC~+tQr3~Il IU i1T [Grl iifS~GiLTi-VI -LIIGS¢ vf. 1.~ vva.a~ ~ <br />#otal .equivalent signals aqua[ the total signals under Eugene's jurisdiction plus <br />ode-half of the shared jurisdiction sign~iis, Dividing fihe total equivalent signals by: <br />' the total number of lane miles of arterial antl collector streets {a figure derived €roin <br />Eugene maintenance records after subtrac#ing turn lanes from the inventory), <br />yields the total percent of signalized ~n#ersecfions.:per lane mile. ~Ftis-yielcls~ <br />., <br />total-of~rr~-equivale _ e <br />_ _c _..n__a_.. _ .i .,a,..,:_r a..,. <br />;~.~~ LZ~,a1-s~~ ~ets~a-ftgttre~lerrved-#~rt~-Eugene t~tarntertance <br />rei;~rTriSCa1[el"-~tt~t , Its-$-'~Y3-$jgrta+j-~ed <br />Once again, it was judged unlikely that the density of signalized intersections in the <br />downtown area would be repeated in newly-developing parts of the City. Accordingly, <br />..the number of signalized intersections per mile was reduced to reflect this factor. <br />~st~n#a~lres~. for the average cost., cif s~g~aitzat~on t?~f'" intersection include: <br />administrative and engineering costs: This estiinatecl average Cost is multiplied <br />by the percent of signalized intersections per lane mile to calculate a component <br />cost per lane mile far traffic signs#s,,. This, cost per lane mile;for si,gnaiization is <br />a.±dded the cosh jier line mile of arterial and collector streets. ~~ <br />and-artenaf-eest~~ <br />1.3.4 Bridges and Other Structure Costs <br />It is likely ,that additional bridges will be constructed as development occurs. <br />{~4ssttmirrg3 ~ ~s~'~s5i~i;eil that bridges required for new development will be in <br />proportion to existing development,ratais~ta, the City of Eugene's inventory of its bridge. <br />system,. 1~pl~~fi~~,+'~t'`r~±et Br~:r~ge~?airi±d''a~eais; <br />Several of the bridges are on localstreets and are, therefore,- not appropriately included. <br />in the cost calculation for arterial and collector streets.. It was also judged unlikely that <br />the close spacing of bridges over the Mill. Race and Amazon Channel in the vicinity of <br />downtown Eugene would be repeated in newly-developing areas. Accordingly, half of the <br />-short-span bridges in the central Eugene area were. eliminated from the cost calculation.. <br />In addition to the small structures, the Ferry Street Bridge and;the Ferry Street Overpass <br />were listed in the inventory. Construction costs faf-#hese} ;~v~~#t~aled, rrr+~~u~d+~t <br />ml :,, , rat +~~.:.~::; ~i'ei9" ~n~ ' cae~~anir#;~t~ fola~~~lr was ~dtvl~ted b ~~~=t~~a <br />.. <br />.~ .,. ., _ . 4:..._ <br />Mahe r~ul~s>fvr the ~.: `;:,s' ~~`iris!#`~a~+r#:?teai'-=~y;~te» ~tdirtg ~n.~vera9e aj~i;~it;per <br />i~ne fife ft~r ~gi~;~s~1~'t~c~tt~ ,~ <br />> > <br />Proposed Methodologies: City of Eugene SDCs (Effective March 01, 1997) Page. C-7 <br />