Traffic Study - Exec Smry

City of Glendale — Regular Meeting (2022-09-22)

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67 Flats & Juniper Square 
Traffic Impact Study – Category I 
 
 
 
 
 
Prepared for: 
 
 
Dominium  
2828 N Central Avenue, Suite 1100B 
Phoenix, AZ 85004 
 
Prepared by: 
 
Project Number: 21.5281 
September 7, 2022 
 
 
Lōkahi, LLC 
10555 N. 114th Street, Suite 105 
Scottsdale, AZ 85259 
 
09/07/22
Alan Heathcoat, P.E.
Principal Engineer
Glendale Transportation
09/09/2022 12:57:18 PM
APPROVED

1 
67 Flats & Juniper Square 
Traffic Impact Study – Category I  
1. Introduction and Executive Summary 
1.1. Purpose of Report and Study Objectives 
Lōkahi, LLC (Lōkahi) was retained by Dominium to complete a Traffic Impact Study for the 
proposed 67 Flats (multi-family) and Juniper Square (senior living) developments. The proposed 
multi-family and senior family residential developments will be located on the northwest corner of 
67th Avenue and Maryland Avenue in Glendale, Arizona. 
 
The proposed development will include the following two (2) land uses: 
 
 
67 Flats 
 
Multi-Family  
384 dwelling units 
 
 
 
 
 
 
 
12 one-bedroom units 
 
 
 
 
 
 
 
204 two-bedroom units 
 
 
 
 
 
 
 
168 three-bedroom 
 
 
Juniper Square 
Senior Living  
221 dwelling units 
 
 
 
 
 
 
 
66 one-bedroom units 
 
 
 
 
 
 
 
131 two-bedroom units 
 
 
 
 
 
 
 
24 three-bedroom 
 
See Figure 2 and Appendix A for the proposed site plan. 
 
The objective of this Traffic Impact Study is to analyze the traffic related impacts of the proposed 
development to the adjacent roadway network. 
 
1.2. Executive Summary 
This report presents the analyses and results of a traffic study prepared for the proposed 67 Flats 
and Juniper Square developments. The proposed development is anticipated to open in the year 
2024.

2 
67 Flats & Juniper Square 
Traffic Impact Study – Category I  
This Traffic Impact Study includes: 
• Level of service analysis for the existing conditions weekday AM and PM peak hours 
• Trip Generation for the proposed development 
• Level of service analysis for the build out year (2024) weekday AM and PM peak hours 
• Level of service analysis for the build out year + 3-year (2027) weekday AM and PM peak 
hours 
• Turn lane warrant analysis 
 
The following intersections are included in this study: 
• 69th Avenue and Ocotillo Road (1) 
• 67th Avenue and Ocotillo Road (2) 
• 67th Avenue and Driveway A (3) 
• 67th Avenue and Driveway B (4) 
• 69th Avenue and Maryland Avenue (5) 
• Maryland Avenue and Driveway C (6) 
• Maryland Avenue and Driveway D (7) 
• 67th Avenue and Maryland Avenue (8) 
 
Existing Conditions 
The capacity and level of service for the study area intersection were evaluated for the existing 
conditions. All study area intersections operate with movements at a level of service (LOS) D or 
better with the exception of the following: 
 
67th Avenue and Ocotillo Road (2) 
• EB left AM and PM peak hours operates at LOS F 
• EB shared through-right PM peak hour operates at LOS E 
• WB left AM and PM peak hours operates at LOS F 
 
Trip Generation 
The trip generation for the proposed 67 Flats and Juniper Square developments was calculated 
utilizing the Institute of Transportation Engineers (ITE) publication entitled Trip Generation, 11th 
Edition. ITE Land Use 220 – Multifamily Housing (Low-Rise) and 252 Senior Adult Housing – Attached 
were used to calculate the trips generated by the proposed development.

3 
67 Flats & Juniper Square 
Traffic Impact Study – Category I  
Trip Generation – Proposed Development 
 
 
 
The proposed 67 Flats and Juniper Square developments is anticipated to generate a total of 3,201 
weekday trips, with 185 AM peak hour trips and 241 PM peak hour trips. 
 
Future Conditions 
Year 2024 (build out) and Year 2027 (built out + 3 years) analyses were completed with the build out 
of the proposed 67 Flats and Juniper Square developments. Utilizing Maricopa Associations of 
Governments (MAG) socioeconomic projections, existing traffic volumes grown by an annual 
growth rate of 2.0% to determine the year 2024 and 2027 traffic volumes.  
 
Year 2024 
Capacity analysis was completed for both the AM and PM peak hours for the year 2024, with the 
build out of the proposed 67 Flats and Juniper Square developments. All movements at the study 
intersections operate at a LOS D or better, with the exception of: 
 
67th Avenue and Ocotillo Road (2) 
• EB left AM and PM peak hours operates at LOS F 
• EB shared through-right PM peak hour operates at LOS F 
• WB left AM and PM peak hours operates at LOS F 
• WB shared through-right PM peak hour operates at LOS F 
 
67th Avenue and Driveway B (4) 
• EB left AM and PM peak hours operates at LOS F 
• WB shared left-through-right PM peak hour operates at LOS E 
 
Delays are typical during peak hours for minor-to-major turning movements, especially at stop-
controlled intersections. Drivers familiar with the area often choose to use alternative routes during 
peak hours or drive at different times to avoid potential delay. The existing upstream signals will also 
help to provide gaps in traffic to allow for turns at these stop-controlled intersection. Therefore, 
improvements to mitigate LOS E and F at the above intersections are not recommended as part of this 
study. 
 
Weekday
Total
Total
In
Out
Total
In
Out
220
384
Dwelling 
Units
2,537
142
34
108
186
117
69
252
221
Dwelling 
Units
664
43
15
28
55
31
24
3,201
185
49
136
241
148
93
Senior Adult Housing - Multifamily
AM Peak Hour
PM Peak Hour
Multifamily Housing (Low-Rise)
Total
Land Use
ITE 
Code
Qty
Unit

4 
67 Flats & Juniper Square 
Traffic Impact Study – Category I  
Year 2027 
Capacity analysis was completed for both the AM and PM peak hours for the year 2027, with the 
build out of the proposed 67 Flats and Juniper Square developments. The results of the year 2027 
build capacity analysis reveal that the study intersections operate with a level of service (LOS) D or 
better, or are maintained at the year 2024 build level of service. 
 
Turn Lane Warrant Analysis  
Based on the MCDOT right turn lane warrant criteria, a right turn lane is warranted at Driveway A, 
and not  warranted at Driveway B.  
Additionally, a southbound right turn deceleration lane is not warranted at the intersection of 67th 
Avenue and Maryland Avenue (8).  
 
Recommendations 
 
• 67th Avenue and Driveway A (3) 
Buildout of a full access driveway and a southbound right turn deceleration lane with 150 
feet of storage and 100 feet of straight-line taper. 
 
• 67th Avenue and Driveway B (4) 
Buildout of a full access driveway 
 
• Maryland Avenue and Driveway C (6) 
Buildout of a full access driveway 
 
• Maryland Avenue and Driveway D (7) 
Buildout of a full access driveway 
 
As with any new development and potential change in traffic patterns, the following is 
recommended:  
 
• Monitor and Adjust Signal Timing 
Monitor traffic patterns in the area and if necessary, adjust nearby signal timing

5 
67 Flats & Juniper Square 
Traffic Impact Study – Category I  
2. Proposed Development 
The study area is located in the City of Glendale, Arizona. The site is located on the northwest 
corner of 67th Avenue and Maryland Avenue. The proposed development is bordered by 69th 
Avenue to the west, 67th Avenue to the east, Summerhill Place Apartments to the north, and 
Maryland Avenue to the south. See Figure 1 for a vicinity map. 
 
The proposed development will include the following two (2) land uses: 
 
 
67 Flats 
 
Multi-Family  
384 dwelling units 
 
 
 
 
 
 
 
12 one-bedroom units 
 
 
 
 
 
 
 
204 two-bedroom units 
 
 
 
 
 
 
 
168 three-bedroom 
 
 
Juniper Square 
Senior Living  
221 dwelling units 
 
 
 
 
 
 
 
66 one-bedroom units 
 
 
 
 
 
 
 
131 two-bedroom units 
 
 
 
 
 
 
 
24 three-bedroom 
 
The proposed development is anticipated to be completed by the year 2024. See Figure 2 and 
Appendix A for the proposed site plan. 
 
There are four (4) proposed access points to the proposed 67 Flats and Juniper Square 
developments, two (2) located along 67th Avenue and two (2) located along Maryland Avenue.  
 
67th Avenue and Driveway A (3) is located approximately 600 feet north of Maryland Avenue and 
will be a full access driveway allowing all movement into and out of the proposed development.  
 
67th Avenue and Driveway B (4) is located approximately 260 feet north of Maryland Avenue and 
will be a full access driveway allowing all movement into and out of the proposed development. 
 
Maryland Avenue and Driveway C (6) is located approximately 300 feet east of 69th Avenue and 
will be a full access driveway allowing all movement into and out of the proposed development.  
 
Maryland Avenue and Driveway D (7) is located approximately 860 feet east of 69th Avenue and 
will be a full access driveway allowing all movement into and out of the proposed development. 
 
See Figure 3 for the proposed study area.

FIGURE 1 | VICINITY MAP
Olive Avenue
Proposed Site
Northern Avenue
Glendale Avenue
Ocotillo Road
Cardinals Way
Bethany Home Road
Camelback Road
Indian School Road
Thomas Road
McDowell Road
Maryland Avenue
107th Avenue
91st Avenue
83rd Avenue
75th Avenue
67th Avenue
59th Avenue
51st Avenue
43rd Avenue
35th Avenue
19th Avenue
69th Avenue

FIGURE 2 | SITE PLAN

FIGURE 3 | STUDY AREA
Legend
Intersection
X
2
Ocotillo Road
69th Avenue
Juniper Square
(Senior Family)
67 Flats
(Multifamily)
Maryland Avenue
67th Avenue
Driveway C
Driveway D
3
4
5
6
7
8
1
Driveway A
Driveway B