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HomeMy WebLinkAbout2006-07-31 Grand Ave Power Point (3) Grand Avenue Roundabout Council Work Session July 31, 2006 -_...~.._,.,-- -- ~~._-_...- Summary ~ Purpose · Provide control to confusing existing intersection · Assist in restricting eastbound traffic on Grand Ave. · Improve pedestrian safety · Improve corridor infrastructure & aesthetics Corridor History ~ Traffic Operations Study (2003) · Grand Ave. Court (vacation) · Investigate traffic operations · Continued development .,I:Technical Advisory Committee i' jJ //;J~,;~,ji}:' ,f ~!~ity of Iowa City ~~tJrii!€rsity of Iowa ~ UIH.€ -tJli1~l~ose Neighborhood Association "'"'. ~ J~COG "'" ",'~:"" <-~ Ea rth Tech - _..~-~~- ~----------- Corridor History (cont.) ~ Results · Modified One-Way Loop System ~South Grand Ave. Improvements (2005) ~Grand Avenue Improvements (2005) Ijj!\'!llj'i~l[)irectional Signing (On Going) ~BY!flgton Road Curve (Deferred) ">t:',. .<>- ",,,", ,.,,,~: ' .,,",", //~ Ga~e System _,.~"m'" -,iliRoundabout Alternative (In process) ~--~-----~---------_.__.,-------.- ,---------"...._---------_._"...._----~._~---_. Project Development ~ Design · FHWA Roundabout Guidelines · Related Projects ~ Key Aspects · Eastbound Grand Avenue di",I;:iU;pjversity and City Utilities "".[/;,"'1/:,., J ,f" BLr~:~~raffic (U-turn Movement) '!: ~e~e~rian/Bicycle Traffic _!I', ,I~~ G~()m~tric Constra i nts .. -Ol:1TerC~rridor Impr~vements - ",iA~?~netlcs/LandsCaPlng -~ .',\' _I ,,,',0, "~I " ----------_.__.__._--_._.__.__._-,..~---~----~------'-_.._-~.,---_.._--_._._-"--,--_._--_._.._-_..._.._--_.-.~----_.._,_.__.__._-~-"---------_._._-~---_..~------- Project Development (cont.) ~ Review Process - Kittelson Associates, Inc. ~ Portland, Oregon -IDOT \ "!i.'i;iS~Q;tt Larson, City of Coralville ."', '.,':$' lJpt:iv~f?ity of Iowa - UIJ;i C'::_~ ''''''n~",,: . 11 :14 ::::; Ai J jj1 :=~:".,,,, / ",., .----.---. - Roundabout Benefits ~ Fewer and less severe crashes · 75010 - 90010 reduction ~ Lower vehicle speeds · 20 mph ~ Increase in traffic capacity _ \1 ,"!~!3Q?!q. - 50010 increase . 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I :~ :::::: k:.~~";" ~- ....' ;~ ,:'_,'~ h. .J _' I ,," -""~ ..., " -r., ~ _. . __ _ _ _,_,_" ..L-..:_ ~ ,__ ' l -' ,,' Closing ~ Purpose - Provide control to confusing existing intersection - Assist in restricting eastbound traffic on Grand Ave. - Improve pedestrian safety - Improve corridor infrastructure & aesthetics ~ Estimated Costs , ! !iU!Ir'~tijJPfOject - $334,000 City S~~re - $167,000 ~~th:::;>".' - LJnlverS!F1 Share - $167,000 cI:1ed~ I e~' "1' "':C" ~ Lettir)~~:- November 2006 \. ",,:"'" ~'t:ql~struction - Spring/Summer 2007 ,<,:.;, ~ \\~\ \ . \. I, --~~--- Summary (cant.) t, -, . "f-tL --~ ~ - -." 'v] , , l~,\ ! 1 t_J~ I -, 1 ( . / ,-' ~ '--.-;\--..: _- - G . , I ,-- -. " /(;)' , -: - - -- , " -- I ' . '. ,/ . - - -- ! 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