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

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I I I I I I I I i I I I I 10 03 12: 12p SRF Consulting Group Inc 783 Mr. Steve Jankowski -9- ~7~ 242S November 26, 2002 '2005 Build Traffic Operations Analysis To determine how well the existing and proposed roadway system will accommodate the proposed development, a traffic operations analysis was conducted for the a.m. and. p.m. peak hours for year 2005. The. future operations analysis was completed for two roadway alternatives. The first analysis assumes that the median along TH 10 will be closed at the intersection of Feldspar Street, resu-icting access lo right-in/right-out movements. 'A second analysis was completed with the intersection of TH 10/Feldspar Street remaining in-place as. a full-access intersection. For both alternatives, Rivenwick Drive will' be extended westerly to connect with the intersection of TH 10/Ramsey Boulevard. The analyses were also conducted tbr the side- street stop controlled T-intersection created by Garnet Street and the Riverdale Drive extension, As shown in Table 3, results from the analysis with the closure of the cross-over median at TH 10/Feldspar Street indicate that all key intersections will operate at acceptable levels of service in year 2005, except for the intersection of TH 10/Sunfish Lake Boulevard. This. intersection is expected to continue to operate at an unacceptable level of service in year 2005. This intersection experiences significant queuing for eastbound through and SouthboUnd lefd.through traffic during the a.m. peak hour and for westbound'through and southbound left/through traffic during the p.m. peak hour. Operations at this intersection are expected to si~ificantly improve with the addition of southbound dual left-turn lanes, a northbound left-turn lane and a separate through and right-turn lane for both approacheSl However, the overall level, of service for this intersection would remain the same, due to the high volume of eastbound and westbound through vehicles. The poor level of service and resulting recommeridations are due to background traffic growth on TH 10 and would be needed regardless of the proposed development. Only the construction of 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 hours. Level of service results at TH 10/Ramsey Boulevard are metered by westbound capacity constraints at the intersection °fTH 10/Sunfish Lake Boulevard. Table 3 Year 2005 Capacity Analysis - Feldspar Street with Right-in/Right-out Access Level of Service Results Level of Service IntersectiOn AiM. Peak P.M. Peak TH !0/t~.am?e'~ Boulevard . " C Cl TH 10/Sunfish Lake Boulevard E F Riverdale Drive/Feldspar S.!.reet* A/A '.. A/A Ri verdale DrJ ye/Garnet Street* A/A A/A Indicates an unsi§nalized intersection. The overall LOS is show.followed by [he worst approach LOS. Level of service results metered by westbound capacity constraints at TH 10/Sunfish Lake Boulevard, p.lO -145-