Traffic Study

City of Glendale — Regular Meeting (2025-06-26)

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NWC 59th+Northern DBC+QSR 
Traffic Impact Analysis 
 
 
Prepared for 
Mr. Mitchell Reynolds  
Development Manager 
Cole Valley Partners 
3519 NE 15th Ave, Suite 251 
Portland, OR 97212 
Contact: Mitchell Reynolds 
T: (918) 934-0288 
mitchell.reynolds@cvpre.com 
  
Prepared by 
 
Submitted to 
City of Glendale 
 
 
2nd Submittal 
January 21, 2025 
 
 
 
 
 
 
 
 
 
14050 N 83rd Ave, Suite 290, Peoria, AZ 85381 
Contact: Collette Frohlich, PE | 480-788-5626 | collettef@greenlightte.com

NWC 59th+Northern DBC+QSR TIA 
i 
Glendale, AZ 
Table of Contents 
Executive Summary ............................................................................................................................... 1 
1.0 
Introduction ............................................................................................................................... 2 
1.1 
Proposed Development ..................................................................................................................... 2 
1.2 
Study Objectives ................................................................................................................................. 2 
1.3 
Study Area .......................................................................................................................................... 2 
1.4 
Analysis Methodology ........................................................................................................................ 6 
1.4.1 
Intersection Level of Service Analysis and Performance Threshold .......................................... 6 
2.0 
Existing Conditions ..................................................................................................................... 6 
2.1 
Roadways ........................................................................................................................................... 6 
2.2 
Intersections ....................................................................................................................................... 7 
2.3 
Signal Timing ...................................................................................................................................... 7 
2.4 
Roadway Safety .................................................................................................................................. 7 
2.5 
Existing Traffic Volumes ..................................................................................................................... 9 
2.6 
Existing Level of Service Analysis ..................................................................................................... 11 
3.0 
Proposed Project .......................................................................................................................12 
3.1 
Site Access ........................................................................................................................................ 12 
3.2 
Trip Generation ................................................................................................................................ 12 
3.3 
Pass-By Trips ..................................................................................................................................... 12 
3.4 
Trip Distribution ............................................................................................................................... 12 
3.5 
Trip Assignment ................................................................................................................................ 13 
4.0 
Traffic Improvements Analysis ...................................................................................................17 
4.1 
Traffic Forecasting ............................................................................................................................ 17 
4.2 
Level of Service Analysis ................................................................................................................... 17 
4.2.1 
Year 2026 LOS .......................................................................................................................... 17 
4.2.2 
Year 2031 LOS .......................................................................................................................... 21 
5.0 
Turn Lane Warrant Analysis .......................................................................................................25 
6.0 
Queuing Analysis .......................................................................................................................25 
7.0 
Drive-Through Queuing Evaluation .............................................................................................26 
7.1 
Access, Circulation and Parking ........................................................................................................ 26 
7.2 
Queuing Data Collection and Analysis ............................................................................................. 26 
8.0 
Conclusions ...............................................................................................................................27 
9.0 
Recommendations .....................................................................................................................28

NWC 59th+Northern DBC+QSR TIA 
ii 
Glendale, AZ 
List of Figures 
Figure 1: Vicinity Map ............................................................................................................................................. 3 
Figure 2: Site Plan .................................................................................................................................................... 4 
Figure 3: Study Area ................................................................................................................................................ 5 
Figure 4: Existing Traffic Volumes ......................................................................................................................... 10 
Figure 5: Site-Generated Trip Assignment ............................................................................................................ 14 
Figure 6: Pass-by Trip Assignment ........................................................................................................................ 15 
Figure 7: Net Site-Generated Trip Assignment ..................................................................................................... 16 
Figure 8: Year 2026 Non-Site Traffic Volumes ...................................................................................................... 19 
Figure 9: Year 2026 Total Traffic Volumes ............................................................................................................ 20 
Figure 10: Year 2031 Non-Site Traffic Volumes .................................................................................................... 23 
Figure 11: Year 2031 Total Traffic Volumes .......................................................................................................... 24 
 
List of Tables 
Table 1: Intersection LOS and Delay Values ............................................................................................................ 6 
Table 2: Crashes by Injury Severity ......................................................................................................................... 7 
Table 3: Crashes by Collision Manner ..................................................................................................................... 8 
Table 4: Crashes by First Harmful Event ................................................................................................................. 9 
Table 5: Existing Peak Hour Intersection LOS ....................................................................................................... 11 
Table 6: Project Trip Generation ........................................................................................................................... 12 
Table 7: Project Trip Distribution .......................................................................................................................... 13 
Table 8: Year 2026 Peak Hour LOS ........................................................................................................................ 17 
Table 9: Year 2031 Peak Hour LOS ........................................................................................................................ 21 
Table 10: Year 2031 Queuing Analysis Results ...................................................................................................... 25 
Table 11: Queuing Data Locations Summary ........................................................................................................ 27 
Table 12: Queuing Data Results Summary ............................................................................................................ 27 
 
List of Appendices 
Appendix A: Traffic Count Data Sheets ................................................................................................................... A 
Appendix B: Vistro 2024 Summary Sheets .............................................................................................................. B 
Appendix C: Project Trip Generation ...................................................................................................................... C 
Appendix D: TIA & Queuing Analysis Scoping Approval .......................................................................................... D 
Appendix E: Queuing Data ...................................................................................................................................... E 
Appendix F: Response to Comments – Submittal 1 ................................................................................................ F

NWC 59th+Northern DBC+QSR TIA 
1 
Glendale, AZ 
Executive Summary 
This report summarizes the findings of a traffic impact study for the proposed 1.4-acre property that will be 
developed as a 935 square foot (SF) Dutch Bros and an 800 SF fast-food restaurant with drive-through land use 
on the northwest corner of the Northern Avenue/59th Lane intersection, in Glendale, Arizona. The Project will 
be constructed on a lot occupied by a vacant building. Project access to the surrounding roadway network will 
be provided via a full access driveway at Northern Avenue/59th Lane.  
The Project is forecasted to generate approximately 116 AM peak hour trips, 62 PM peak hour trips, and 873 
average daily trips (ADT) on a typical weekday. With reductions for expected pass-by trips, the Project is forecast 
to generate approximately 26 AM peak hour trips, 10 PM peak hour trips, and 731 net daily trips on a typical 
weekday. 
Existing conditions, as well as Opening Year (2026) and Opening +5 Years (2031) non-site and total traffic 
conditions scenarios were analyzed.  
The following conclusions are based on the findings of the Project TIA: 
 
The Project is forecast to generate approximately 116 AM peak hour trips, 62 PM peak hour trips, and 
873 daily trips on a typical weekday based on the ITE Trip Generation Manual, 11th Edition. After 
considering pass-by trips, the Project is forecasted to generate approximately 26 AM peak hour trips, 10 
PM peak hour trips, and 731 net daily trips on a typical weekday. 
 
Based on the capacity analysis performed, all study intersections are expected to perform at acceptable 
LOS during all scenarios, except for minor street approach movements at Northern Avenue/59th Lane. 
High delay is expected on the stop-controlled approach for unsignalized intersections during peak 
periods.  
 
The developer will construct of a westbound right-turn lane at the intersection of Northern Avenue/59th 
Lane as required by the City.  Additional turn lanes aren’t warranted by the Project. 
 
With a proposed drive-through queue storage length of 450 feet and the inclusion of a bypass lane, the 
Dutch Bros drive-through lanes are expected to sufficiently accommodate the maximum queue length 
expected. A queuing study for the Smalls Sliders restaurant will be completed under a separate cover. 
The below Project recommendations are suggested based on the study findings. 
 
Construct a westbound right-turn lane at the intersection of Northern Avenue/59th Lane with a reverse 
curve taper to avoid the existing 69 kV pole. 
 
Construct project improvements in accordance with the City of Glendale’s design criteria, as applicable.