Agenda - Council - 01/14/2003 - Laserfiche WebLink

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I I I I 10 03 12:14p SRF ConsultinG GroUp Inc ?BS 475 242S Mr. Steve Jankowski November 26, 2002 Summary and Conclusions A residential development is proposed on a currently vacant site located in the southwest quadrant of Garnet Street and the proposed extension of Riverdale Drive in theCity of Ramsey. The proposed development includes 112 town homes. The purpose of this study.is to examine the impacts this development would have on the adjacent roadway system. p..14 I I I I I I I I I I I I Based on the analysis, the following conclusions and. recommendations are offered for your consideration: · All key intersections currently operate at an acceptable overall LOs D or better during the a.m. and p.m. peak hours, with existing geometrics and traffic control, except for the intersection of TH 10/Sunfish Lake Boulevard. ·This intersection-currently operates at. a LOS E during the p.m. peak hour. The poor level of service at this intersection is dueto the high volume of through traffic on TH i0. In addition, the southbound left-mm volume is currently at the threshold for dual left-turn lanes (300 vehicles per hour'). Under year 2005 build conditions, all key intersections are expected to operate at an acceptable overall LOS C or better during the a.m. and p:m. peak hours, except for the intersection of TH 10/Sunfish Lake Boulevard. This intersection will operate at a LOS E during the a.m. peak and LOS F during the p.m. peak. The recommended addition of Southbound dual left-turn lanes, a single northbound left- turn lane and a separate through and right~turn lanes for both approaches at the intersection of TH 10/Sunfish Lake Boulevard will improve side-street operations. However, overall operations ·will' remain at unacceptable levels due to the high volume of eastbound and westbound through vehicles: Only the construction additional through lanes on TH 10 will improve the year 2005 intersection operation to an aCceptable-level of service during the a.m. and p.m. peak hour. The poor level of service and resulting recommendations are due to background traffic growth on TH i0 and would be needed regardless of the new development. Retaining full access to TH l0 at its intersection with Feldspar Street will not improve the . operations at the adjacent' TH 1.0 intersections. Due to high volumes-and speeds along TH 10, it is recommended that the median cross-over of TH 10/Feldspar Street is closed to improve overal! safety in the study area. MnDOT is considering the closure of this- median cross-over, along with two others between Ramsey Boulevard and Sunfish :Lake' Boulevard, as. part of a mill and overlay project·schedUled for Spring 2005. Closure of the median cross-over should be discussed at that time. -149-