Agenda - Council - 09/09/1996 - Laserfiche WebLink

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I '1 I I I I I I I I I I Larry Erb ~ - 2 - September 6, 1996 The two key intersections included in this project are' TH 47 at 142nd Avenue NW, and TH-47 at CSAH ,5. Both intersections have minor street stop control. Currently, the geometrics at the intersection of TH 47 and 142nd Avenue NW include a left/through lane and a right turn lane for northbound and southbound approaches,' and a left/through/right turn lane for eastbound and westbound approaches., The geometrics at the T-intersection of TH 47 and CSAH 5 include a left turn lame and a through lane for the northbound approach, a left/through lane for the southbound approach, and a left turn lane and a right turn lane for the eastbour~d approach. FUTURE CONDITIONS Proposed roadway and intersection improvements included in this project are shown in the project layout sketch in the Appendix. Proposed ?Oadway improvements include widening TH 47 to a four-lane roadway from north of County Road 116 to CSAH 5. Intersection geometric improvements at the intersection :of TH 47 and 142.nd Avenue NW would provide a left turn lane, two through lanes and a right turn lane for northbound and southbound approaches, and a left tt~rn lane and a through/right turn lane for eastbound and westbound approaches; The intersection of TH 47 and CSAH 5 would be modified from a T- ~ntersecbon'to a four-legged intersection. The proposed intersection geometdcs would provide a left turn lane, two through lanes ..nd a right turn lane for the northbound approach, a left turn lane, a through lane and a right turn Jane for southbound and eastbound approaches, and a left turn lane and a through/right turn lane for the westbound approach. Proposed traffic control improvements would include the installation of traffic signals at the intersections of TH 47 at 142nd Avenue NW, and at CSAH 5. INTERSECTION CAPACITY ANALYSIS A traffic operations analysis was conducted for the two key intersections using existing am and p.m. peak hour turning movement counts taken in July 1996 (see Appendix) and geometrics with proposed traffic signal control. Results indicate that the intersection of TH 47 and 142nd Avenue NW operates at Level of Service B dudng the am peak hour. During the p.m. peak hour, this intersectior~ operates above capacity at Level of Service F. Under similar conditions, the intersection of TH 47 and CSAH 5, would operate at Level of Service B during the am and p.m. peak hour.