Agenda - Council - 09/09/2003 - Laserfiche WebLink

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CONSIDER T 'RAFFIC CONTROL. CH_~NGES ~4~lbONG RI¥'ERD:4~E By: Steve Jankowski, City Engineer Background: With the connection of Pdverdale Drive to Highway l 0 at Ramsey Boulevard, this roadway will begin to flmction more as the collector street for which it was planned. Additional traffic will aisc be generated onto this roadway as the townhomes associated with Rivenwick 3~d develop. Shown in Figure I is a sketch which illustrates the existing daily traffic volumes on each street se~zrnent in the area, along with the existing traffic control which is currently in place, g2so attached is Figure 2 which represents the projected traffic volumes through this same area, assuming the 112 units of associated with the Pdvenwick townhomes are fully developed. TLs development will add 7i7 daily tr/ps., of which 70 percent are anticipated to be eastbound. it should be noted that the intersection of Garnet and Pdverdale is the only one in the area which is cu~ently uncontrolled. Some type of control should'be considered as the town_houses and additional traffic generating commercial development occurs along Pd~'erdaie. Figure 2 aisc contains what Staff recon~mends as the eventual =ar%% control scheme in this area, with Pdverdaie tra~rllc being ~i,,~_..~ the fi~ht-of-wav~ , ~d ail other side ~t~ .... e~s be~ con-oiled with stop si~s. Vv ~_ile Garnet should at some poim.-yieid to Pdverdaie, the traffic counts show the north-south movement be~wveen the sought leg of Garnet and the northeast leg of Pdverdaie to be the predominant movement through the intersection. To cause the predominant movement to y/etd to a lesser one is probiemaric. One aitemative would be to keep the intersection of Gamet/Riverdale uncontrolled, k seems quite likely that citizens in the ex/sting Ri~.,enwick subdivision will demand some Lf'Pe of control at this intersection. Second alternative would be to post a stop on the south leg (Garnet Street) as identified in the long-teu-m traffic control plan presented in Figure 2. This will be needed eventually, however, until trat%fic increases with development, this control will be stopping the predominant movement. A third alternative would be to post an all way stop (three way) at the intersection until Pdverdale becomes the predominate throufh movement. This alternative is unl/kely to meet the recommended warranv~ for all way stops, which is, a mihimum of 200 vehicles entering the intersection from all directions for a minimum of ei~xt hours per day. A second negative is that at some point in the future ir would be necessary to implement a tra£fc change to We Riverd~le the fight-of-way, when it previously needed to share this with Garnet. -204-