08-04-25 - City Council Work Session Agenda

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• Via the future north leg of the Main Street & Sunset Avenue roundabout. Most access points are the same as in Scenario 1, with Access B being located significantly closer to Sunset Avenue and the development being concentrated largely in the areas at the northeast and southeast corner of the Main Street & Sunset Avenue roundabout. Note that in order to comply with the Anoka County Access Spacing standards, the speed limit along Main Street would need to be reduced to 45 mph and Access B would need to be located midway between Sunset Avenue and Access C (1/4 mile). Site specific traffic analysis should be conducted to determine the final geometric, spacing, and control needs of the access points. Similar to Scenario 1, only portions of the development are anticipated to be short term developments included in the Opening Year (2030) Scenario 2 analysis. Based on the anticipated future development patterns, Accesses E, F, G, H, and Access D north of Main Street are not included in the Opening Year (2030) conditions as these portions of the site are not anticipated to see development by this time. However, as previously noted, when the development on the AUAR site south of Main Street happens, it is anticipated that Robinson Drive (Access E) would be extended to connect to 41h Avenue to provide an additional connection, but this is not included in the analysis because the conservative analysis was used to determine if this Robinson Drive connection would be necessary from a traffic operations standpoint. Note that the layout of the site is preliminary and subject to significant changes; future development plans may modify the assumed access points and affect how traffic is distributed throughout the site. The access assumptions outlined above are meant to provide a conservative means of estimating traffic levels at site access points and other minor access points are likely to be constructed along minor roadways such as 41h Avenue and Pine Street. Minor access points are generally not expected to affect the results and findings of the study and thus are excluded from the analysis. It is anticipated that the full development of the AUAR area would take up to 30 years. However, traffic projections as part of an AUAR are typically 20-year analysis horizon. This results in a conservative analysis for the Design Year as the full site may not be built out yet. 5.2. TRIP GENERATION Proposed development traffic was determined based on data from the Institute of Transportation Engineers' Trip Generation Manual, III Edition. The manual provides peak hour trips rates/equations, inbound - outbound percentages that can be attributed to the proposed site. The site is anticipated to see partial buildout by the studied Opening Year (2030). It is estimated that approximately 650 single family detached residential units, 350 attached residential units, 90 multifamily (low-rise residential units) and 30kSF of retail space would be completed by the studied Opening Year. The anticipated trip generation for the Opening Year (2030) Scenario 2 conditions are shown below in Table 5-1. Note that the trip generation for the Opening Year (2030) is anticipated to be the same for both development Scenarios, but the scenarios differ in access and traffic distribution. The development is expected to generate 12,047 daily trips, including 788 trips during the AM peak hour (216 entering and 572 exiting) and 1,142 during the PM peak hour (697 entering and 444 exiting). Northwest Main - Lino Lakes, MN Traffic Impact Analysis I June 2025 Page 176 of 617