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O1/07/2004 14:OY FAX SEH ST.PAUL QJ�Q� � � MEMORANDUM 3535 Vadnals Center Drive. St. Paul, MN 55110•5t96 'PO: FROM: DATE: RE: 651.490.2000 8Q4.32b2Q55 851.490.2i50 FAX Th�anas Pasch4ce, Raseville City P(anner Glen Van i�V'orauer, $�ainr Transpartation Enginaer January 7, 2004 Traffic Study �or SuperAmerica Lexington Avenue and County Road B SEH No . A-MPLSTR97b1.00 14�00 As you requested. we k►avc completed a capacity analysis Of the existing traff'ic volumes at the intezsection of County Road B and Lexington Av�►ue. We utilized the latest traffic volumes provided by the Ramsey County Public Works Departtr�ent that were completed in 200L As indicated in the initial report, tr�c volumes have changed little in the p�st 10 years. Therefore, drt volumes at the intersection are a.,,�ared to have had liltle change also sincc 2001. The capacity analysis takes traffic valume infocmation far each of the tnrning ruovemcnts at the intersection, along with the Ia� arranganents and a number of oc�ter variables, such as percent of trucks, and calculates a level of service (LOS). The LOS is graded frora A through �', �ami]�r to school grades. A LaS A indicates free flow conditions with no delays. A I,OS F�s ix2,�f c has a significant delay and the backup of traffic is great enough that not all traffic clears the intersection during a single traffic signal cycle. A LOS D is us�aally the design criteria far metropolitan area intersections with �,OS L acceptable for short periods of time. The calculations we completed indicate the ove�rall intersection operates at LOS D in the p.m. peak hour, at LOS C during the noon hour, and at L,OS B in the a,m peak hour. During b�th the noon hour and the a,m peak hour, the calculations show there is little ccmgestion except far soutkabound through traffz� in the a.m. and the noon hour and for the northbound through movement iri thc noon hour. However, these still continue to operate � LOS C ar� betre�c. LY the p.m peak hour, � calculations show a satist`�CCOry operating intersection, but also indicate congestion can occur for both eastbound tk�cough traffic and northbound through traffic. The volumes irey be high enough so occasionally scn�e tt�c may not totally clear ti�e interseccion on a single signal cycle. The rnmibers shown in the capacity print out are satisfactory and acceptable sirtce sorc� p,m. peak hour congestion is anticipated on major streets. With the lack of historical grawth in traffic volumes, and no reason to believe the paCtern will change, the intersection should continue to operate at a satisfactory, but busy condition in the future. The additional traffic corning � the liquor store rcptesents such a small percentage of traffic in the intersectionthat there would be no ehange in �y of the calcu�aced results. If you have questions c� need additional inforn�atian�, please feel free to call me. 11� x��,�,,�r � � ��,.�r.� i.�a w�a�� i�ara r�e� r,e. . �15,�.dqawe� • 4r �w� �+ar