2007-11-28 CC Packet - Laserfiche WebLink

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However, no additional mitigation is proposed because: · Relatively few vehicles are expected for those movements · A traffic signal at the Progress Road and Dupre Road intersections would not be warranted · Lower LOS results for side-street stop controlled movements are not uncommon · Progress Road traffic has the option of shifting to the signalized intersection at Main Street and Centerville Road Although overall satisfactory LOS are expected to be provided, safety improvements to the Main Street corridor are recommended. These improvements will retain the flexibility for different left turn phasing, allowing the signal to adapt to changing traffic flows and patterns. The changes will also improve the LOS for some individual movements. The alternative improvements recommended include: · Providing an exclusive northbound left turn lane at the intersection of Main Street and Centerville Road instead of an exclusive right turn lane · Adding a southbound left turn lane at the intersection of Main Street and Centerville Road · Adding a southbound right turn lane at the intersection of Main Street and Progress Road The results and recommendations for 2030 are similar with or without the proposed development. The exact timing for a traffic signal at the intersection of Main Street and Centerville Road will depend upon actual traffic conditions. The intersection and its volumes should be monitored to determine the appropriate timing of installation and ensuring that a traffic signal system is warranted and justified. Regional System Main Street (CSAH 14) does not currently connect to 1-35W. About 2,400 vehicle trips per day are expected on Main Street (CSAH 14) east of the intersection with 20th Avenue. Using an assumption of 15 percent to the north, 15 percent to the east, and 70 percent to the south at the interchange with 1-35E would result in 360 trips, 360 trips, and 1,680 daily trips, respectively. These volumes represent less than four percent of the existing daily traffic on 1-35E in either direction and on Main Street (CSAH 14) to the east of the interchange. The expected increases during the a.m. and p.m. peak hours are anticipated to be similar in magnitude. The County has a preferred alternative selected for the 1-35E interchange with Main Street (CSAH 14), which includes improvements at the intersections. Construction is scheduled for 2009 based upon the Five-Year Highway Improvement Plan. The planned improvements should be able to accommodate projected traffic through 2030. The expected traffic from this proposed development does not represent a significant increase in traffic volumes that would necessitate changes to those planned improvements. Given the lack of connection to 1-35W, the minor increase in traffic on 1-35E, and the pending reconstruction of the 1-35E interchange with Main Street (CSAH 14), it was determined that the proposed development will have little to no impact on the regional system. Centerville Downtown Redevelopment Page 28