08-01-2022 Council Work Session Packet

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Traffic Impact Study Robinson Property Alliant No. 221-0180.1 6 June 30, 2022 Table 4 – Existing Traffic Operations Analysis 3.0 Future No Build Conditions To determine potential traffic impacts associated with background traffic growth alone, future no build conditions were evaluated using Synchro/SimTraffic software. The future no build conditions, including background traffic growth while excluding proposed development trips, were evaluated for the near-term year 2025 and the long-term year 2040. 3.1 Background Traffic Growth Traffic forecasts in the Lino Lakes 2040 Comprehensive Plan were reviewed to determine an appropriate background traffic growth rate through the year 2040 analysis. Within the study area, background traffic growth rates are forecast from approximately 0.75 to 2.50 percent annually through the year 2040. However, a significant portion of new trips within the study area through the year 2040 will be generated by the proposed development. Therefore, an annual background traffic growth rate of one (1.00) percent was chosen and applied to the existing traffic volumes to account for new study area trips independent of the proposed development. The resultant year 2025 and year 2040 no build conditions are shown in Figure 3 and Figure 4, respectively. It should be noted that when adding proposed development trips to the chosen background growth rate under future build conditions, the projected study area daily traffic volumes are expected to meet or exceed the year 2040 daily traffic volumes forecasted in the Lino Lakes 2040 Comprehensive Plan. 3.2 Infrastructure Improvements A year 2024 Anoka County project is expected to convert the Main Street/Sunset Avenue intersection to a single-lane roundabout. Therefore, the Main Street/Sunset Avenue intersection was modeled as a single-lane roundabout in all future analysis scenarios. It should be noted that the Main Street corridor is envisioned as a four-lane divided roadway in the long-term. However, project funding has not been dedicated, nor has a definitive timeline been associated with expanding Main Street. Therefore, Main Street was modeled as a two-lane undivided roadway in all future analysis scenarios. Main Street & Sunset Avenue A /A 2.4 /5.6 A /B 3.7 /10.3 Main Street & 4th Avenue A /A 1.7 /5.0 A /A 2.2 /7.0 4th Avenue & Carl Street A /A 1.3 /3.9 A /A 1.0 /3.4 Century Trail & Carl Street A /A 0.8 /3.2 A /A 0.2 /2.9 Sunset Avenue & Century Trail A /A 1.3 /6.0 A /A 0.9 /4.3 Sunset Avenue & Robinson Drive A /A 0.7 /4.5 A /A 0.7 /4.4 Robinson Drive & Century Trail A /A 0.8 /1.4 A /A 0.3 /1.2 Overall Intersection LOS / Worst Approach LOS Overall Intersection Delay / Worst Approach Delay Alternative AM Peak Hour PM Peak Hour LOS Delay (s)LOS Delay (s)