08-11-25 - City Council Agenda - Laserfiche WebLink

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Northwest Main – Lino Lakes, MN Traffic Impact Analysis │ June 2025 20 Intersection Control Approach Operations by Movement AM Peak Hour PM Peak Hour Left Through Right Overall* Left Through Right Overall* SB - - - - - - *Delay of worst movement is reported in place of overall delay at side-street stop-controlled intersections. 4.6. DESIGN YEAR (2045) SCENARIO 1 MITIGATED CAPACITY ANALYSIS Based on the operational deficiencies of the network in the unmitigated scenario, the following mitigation measures are recommended for the Design Year (2045) Scenario 1 conditions: • Install a roundabout at Main Street & 4th Avenue • Expand Main Street to 4 lanes west of Lake Drive o This includes converting all roundabouts along Main Street (at Sunset Avenue, Access C, and 4th Avenue) to 2x1 roundabouts. • Expand Main Street & Lake Drive roundabout to accommodate northbound left-turn traffic. o The roundabout is anticipated to require two northbound entry lanes, two exit lanes on the west leg, and a bypass lane for the eastbound approach. A Design Year (2045) Scenario 1 Mitigated capacity analysis was conducted in order to test the impacts of the proposed mitigations on operations at the study intersections. The Design Year (2045) Scenario 1 traffic volumes are shown in Exhibit 12. Results of the Design Year (2045) Scenario 1 Mitigated capacity analysis are included below in Table 4-5. With the proposed mitigations in place, all intersections and individual movements are expected to operate at LOS D or better in the AM and PM peak hours. The SimTraffic and Rodel 95th percentile queueing results were reviewed and all 95th percentile queues are expected to remain within their provided storage bays with no significant queueing issues anticipated. Based on the results of this analysis, acceptable traffic operations are expected to be maintained with the proposed mitigations in place. SimTraffic and Rodel analysis reports are included in Appendix B. Table 4-5: Design Year (2045) Scenario 1 Mitigated Level of Service Intersection Control Approach Operations by Movement AM Peak Hour PM Peak Hour Left Through Right Overall* Left Through Right Overall* Main Street & Sunset Avenue Round- about (2x1) EB B (12.0) A (9.6) B (13.8) B (13.0) WB A (9.2) B (10.4) NB A (6.4) C (16.7) SB A (5.5) A (5.7) Sunset Avenue & Robinson Drive Side Street Stop EB - - - A (3.9) - - - - (-) WB - - A (3.9) - - A (4.9) NB - A (1.4) A (1.1) - A (2.2) A (1.4) SB - A (0.9) - - A (0.8) - Sunset Avenue & Century Trail Side Street Stop EB - - - A (4.5) - - - - (-) WB - - A (4.5) - - A (6.7) NB - A (1.5) A (0.3) - A (2.1) A (0.6) SB - A (2.0) - - A (1.0) - Page 201 of 679