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<br /> <br />CENTERVILLE RD (CSAH 21/CSAH 59) AT ASH ST (CR J)/WILKINSON LAKE BLVD PAGE 21 <br />ICE REPORT <br />S.A.P. TBD <br />WSB PROJECT NO. 2988-080 <br />CITY OF LINO LAKES, MN <br /> <br />Table 12: 2018 Roundabout Operations Summary <br />Intersection AM Peak Hour PM Peak Hour Control Location Approach Approach <br />Delay (LOS) <br />Intersection <br />Delay (LOS) <br />Approach <br />Delay (LOS) <br />Intersection <br />Delay (LOS) Roundabout Centerville Rd <br />(CSAH 21/CSAH 59) <br />at Ash St (CR J) <br />NB 7.2 (A) <br />8.2 (A) <br />9.7 (A) <br />9.8 (A) WB 6.5 (A) 13.1 (B) <br />SB 9.6 (A) 6.7 (A) <br />EB 9.2 (A) 6.7 (A) <br /> <br />2038 Roundabout Signal Build Conditions: Similar to the 2018 roundabout build conditions <br />the 2038 build conditions assumes a roundabout with the proposed lane configuration and the <br />proposed Hawkins residential project fully developed. Based on these assumptions the <br />intersection would be operating at an overall LOS B in the AM peak hour and LOS C in and PM <br />peak hour. The results of the 2038 roundabout build condition traffic operations analysis are <br />summarized in Table 13. Detailed modeling results are provided in Appendix D. <br /> <br />Table 13: 2038 Roundabout Operations Summary <br />Intersection AM Peak Hour PM Peak Hour Control Location Approach Approach <br />Delay (LOS) <br />Intersection <br />Delay (LOS) <br />Approach <br />Delay (LOS) <br />Intersection <br />Delay (LOS) Roundabout Centerville Rd <br />(CSAH 21/CSAH 59) <br />at Ash St (CR J) <br />NB 10.2 (B) <br />13.4 (B) <br />17.9 (C) <br />22.7 (C) WB 8.6 (A) 41.7 (E) <br />SB 17.5 (C) 8.9 (A) <br />EB 13.8 (B) 9.1 (A) <br /> <br />Right of Way Impacts <br /> <br />There will be some impacts to the existing right of way and new permanent easements will need <br />to be established to construct the proposed traffic signal or roundabout alternatives. Figure 10 <br />and Figure 11 show the proposed alternative configures in relationship to the existing right-of- <br />way. Based on these figures the roundabout alternative would require approximately 30% more <br />right of way. The exact location and dimensions will be determined with preparation of the <br />feasibility study and final design documents. <br /> <br />Project Costs <br /> <br />The preliminary planning level project cost was determined based on similar projects. Based on <br />the proposed alternatives shown on Figures 10 and Figure 11 the following estimated cost can <br />be assumed: traffic signal alternative with roadway improvements - $1,500,000; roundabout <br />alternative - $1,000,000. A detailed cost estimate will be prepared with the feasibility study and <br />during final design.