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Woodland Ridge Subdivision
Phases 3-8
Traffic Impact Analysis
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Springfield, Oregon
December 15, 2021'
i
Woodland Ridge Subdivision
6130122
Phases 3-8
Traffic Impact Analysis
Springfield, Oregon
December 15, 2021
Table of Contents
I. Executive Summary ................................................................ 1
11. Background...................................................................... 2
L Introduction, Location and Vicinity Map ......................................... 2
2. Description of Development Site ................................................ 2
3. Existing Study Area Conditions .... _........................................... 2
4. Crash History .............................................................. 3
5. Transit.................................................................. .. 4
6. Pedestrian and Bicycle Facilities ............................................... 4
IH. Traffic Analysis.................................................................. 5
1.
Trip Generation............................................................. 5
2.
Trip Distribution............................................................ 5
3.
Existing Traffic Conditions.................................................... 6
4.
Seasonal Factor ............ ... .. _ ..................... ..................... 6
5.
Intersection Operations Analysis - General Procedures ............................... 6
6.
2021 Existing Intersection Operational Analysis ................................... 7
7.
2027 Intersection Operational Analysis ............. ............................. 8
8,
2032 Intersection Operational Analysis .......................................... 8
9.
Stop Sign Request at Forsythia and 5 l"Place ..................................... II
IH. Conclusions and Recommendations................................................. 13
Tables
Table 1: Existing Study Area Street Conditions ............................................. 2
Table 2: Five -Year Crash History - Study Area Major Intersections ............................. 3
Table 3: Daisy Street Between 42" Street and Bob Straub Pkwy. Crashes by Year ................. 3
Table 4: Trip Generation, Weekday, AM and PM Peak Hours - Single -Family Detached............ 5
Table 5: 2021 Existing Intersection Operational Analysis.. . .... ................. ........... 7
Table 6: 2027 Intersection Operational Analysis ............................................ 9
Table 7: 2032 Intersection Operational Analysis ........................................... 10
Woodland Ridge Subdivision Traffic Impact Analysis pace 1
1. Executive Summary
Hayden Homes is proposing to build a 253 -unit single-family addition to Woodland Ridge subdivision in
southeast Springfield, Oregon. The site is a 72.36 acre parcel in south Springfield located between the
Southern Pacific Railroad to the south and Phases I and 2 to the north and between 48w Street to the west
and Phase 2 of the Pinehurst subdivision to the cast (see Figure 1). The site is planned to be built out in 6
phases annually from 2022 through 2027. The subdivision will have four connections to existing city
streets: 5 F' Place to the north and Holly Street to the west will be connected in 2022 with Phase 3. Holly
Street to the east will be open with Phase 7 in 2026 and Pinehurst Street will connect to the east near the
southeast comer of the site with the final phase, Phase 8 in 2027.
The five-year crash history found a total of 36 reported crashes at the study area intersections with 12
occurring at the Daisy at Bob Straub intersection. Along Daisy Street between 42"tl Street and Bob Straub
Parkway 17 crashes were reported, with six crashes reported in 2019. Overall rear -end (4), angle (5), and
sideswipe -overtaking (4) accounted for most of the 17 crashes.
Intersection operations were analyzed for existing conditions in 2021, and buildout conditions in 2027
and five years after completion in 2032. The operational analysis was limited to six intersections; Daisy
Street at Bob Straub Parkway, 51" Place, 48i6 Street, and 42ntl Street. Bob Straub Parkway at 57i° Street,
and Main Street at 51" Place. Also included in the analysis is the investigation of a Stop sign warrant for
the Forsythia Street approaches to 51" Place. For existing 202t conditions, all study area intersection
movements operate at levclof-service (LOS) D or better except for the eastbound left -tum on Daisy
Street at 42"a Street which operates at LOS = E. Previous studies have indicated that a traffic signal will
meet warrants in the near future at Bob Straub Pkwy. at Daisy Street. 24-hour approach counts on all four
legs of the intersection were taken on November 18, 2021. Reducing the data found the intersection to be
just under the Manual on Uniform Traffic Control Devices (MUTCD) signal warrants 1, 2, and 3, but did
just meet ODOT's 70% Preliminary Signal Warrant for interruption of continuous traffic.
By buildout of Woodland Ridge in 2027, eastbound and westbound movements on Daisy at Bob Straub
fell to F and E respectively. The intersection will now meet the MUTCD signal warrants and would
operate at LOS = A. All other intersections remain at LOS D or better except the eastbound left -turns at
42nd and Daisy which is now at LOS =F.
The intersection of Forsythia Street with 51" Place was investigated for a Stop sign for the minor
movements on Forsythia Street. The 2016 MUTCD requires a combined vehicular, bicycle, and
pedestrian volume entering the intersection from all approaches averages more than 2,000 units per day.
A three day (Tuesday -Thursday) approach count on Forsythia found a maximum daily volume of It 5
eastbound and 84 westbound of Forsythia. For 51st Place, 45% of the site's buildout daily trips amounts
to 1099 vehicles. The total of 115 +84 + 1099 equals 1298, well below the standard of 2000.
By 2032, 5 years after completion, a signal at Bob Straub Parkway and Daisy Street will operate at LOS
= A if signalized or LOS = F on both east- and westbound approaches on Daisy Street if not signalized.
The eastbound left -tum on Daisy Street at 42v° Street will operate at LOS F and all other study area
intersections operate at LOS = D or better.
Based on the traffic impact analysis summarized above, we recommend approval of the development.
Based on the trip distribution, the development would contribute 27 trips out of 1348 in 2027c from
Woodland Ridge will impact the intersection of Bob Straub Parkway at Daisy Street. However, the
estimated trips from the site at buildout, are a small percentage of the estimated total trips - 37 out of a
total 1348 = 2.7% and this percentage will decrease over time.
Access Engineering LLC December 15, 2021
Woodland Ridue Subdivision Traffic Impact Analysis Page 2
II. Background
1, introduction, Location and Vicinity Map
Hayden Homes is proposing to build a 253 unit single-family residential development addition to the
Woodland Ridge Subdivision located in southeast Springfield. This addition is south of the two phases
currently under construction. Figure 1 in Appendix A shows the location of the site in southeast
Springfield. The purpose of this study is to document and analyze the potential traffic impacts of trips
generated by the proposed development.
2. Description of Development Site
The site is a 72.36 acre parcel in southeast Springfield located between the Southern Pacific Railroad to
the south and Phases 1 and 2 to the north, and between 48" Street to the west and Phase 2 of the Pinehurst
subdivision to the east. The site is planned to be built out in 6 phases annually from 2022 through 2027.
1 h site plan (see Figure 2 in Appendix A) shows the layout of the 253 single-family units. Access is
provided by 51" Place to the north and Holly Street to the west in 2022: Holly Street will be extended cast
to a developed subdivision with phase 7 in 2026; and Pinehurst Street will be extended east with phase 8
in 2027. The intersections of Daisv Street at Bob Straub Pkwy., 5l" Placc, 48'h Street, and 42nd Street,
along with Bob Straub Pkwy, at 57"` Street, and Main Street a151" Place have been identified for analysis.
3. Existing Study Area Conditions
'Cable I: Existing Study Area Street Conditions
street
Jw§dlaBON
Posted
Bases yadM-Curbs
Travel
age
Sidewalks
onStrat
Classlaraban
seat
Lanes•
Lanes
Bides
Parking
Segment
Daisy Sweet
Bob Slteub Pkey to 52^' St
38'-Cuas
seen Soles
Both Sider
52' Streel to 51v Street
�- Cutts Basin. . part Nou
Nona
SSan
South San
51'Slreelb48^SUeM
Ciry-Meer Cdleclor
25
as - Curbs
2
(Signed)
Both Sides
Both Sides
41P Street to 48^ Strout
W -Cede
Both Sides
Both Sides
WSbeeta4VSheel
W -Curbs
Both Sher'
Both Sides
ebb Straub Parkway
County - urine Atonal
45
88'- divided el median - Cures
4
None
BaN Sides
Nona
MainStreet
000T -Major Arterial
40
68'y CTL -Cuts
4
Both Sides
But Sides
Nona
5T' Place
NOM of Daisy Street
City - Local
21^
20'-24'- Gravel Shoultlers
2
None
Nana
Some
South of Datsy Street
2S"
34' -Cutts
2
Nate
Both Sides
Both Sitles
Small
Main Street to Aeder Street
City-Golleclor
25^'
48' -Curbs
2
None
Both Side¢
BWM1 Sitles
Daisy Street to Holly St
Ciry- collecla
25"'
38' -Cutts
2
None
BWh Sides
Bpm Sitles
42ntl Street
Go - Minor Put
30
W -cuts
2
BON Sitles
BOM Bides
Notre
'-Thtwgh latres only, ^-He side relk soutM1 side at a mobile hams park, '-- Not pooled -basic rule
The intersection of 57" Street at Bob Straub Pkwy. is controlled by a 3-phase traffic signal.
The intersection of Daisy Street at Bob Straub Pkwy. is controlled by Stop signs for Daisy Street.
The intersection of Daisy Street at 51" Place is controlled by Stop signs for 51" Place.
The intersection of Daisy Street at 48"' Street is controlled by a Stop sign for 48" Street.
The intersection of Daisy Street at 42"d Street is controlled by Stop signs for Daisy Street.
The intersection of 51" Place with Main Street is controlled by a Stop sign for 51" Place.
Access Engineering LLC December 15, 2021
Woodland Ridge Subdivision Traffic Impact Analysis Page 3
4. Crash History
Crash records for the study area intersections on Daisy Street, Bob Straub Pkwy, and Main Street at 48th
Street and 51" Place were collected for the period 2015 through 2019 from ODOT's Crash Analysis and
Reporting Unit. For the five-year period there were 34 reported crashes. The crash detail reports are in
Appendix B.
Table 2: Five -Year Crash History - Study Area Major Intersections
Intersection
Collision Types
Rear Fixed
End Turn Angle Obj Other Total
AADT
(est.)
Crash
Rah
(mosr
Severity
PDO Injury
Bob Straub@ Mt Vemon
1
2
2
0
0
5
22,200
0.12
2
3
Bob Straub @Aa at.
1
0
3
0
0
4
22,000
0.10
2
2
Sobsbaubig Wast
1
2
9
0
0
12
21,200
031
3
9
Wat Gosayst.
1
2
3
1
0
7
14,150
027
2
5
4a^St �Matn:
1
1
3
0
1
B
27.450
012
2
4
6flPt �MaIn SL
1
1
0
0
a
2
P.500
0.04
1
t
Trial
8
a
20
1
1
36
12
24
A<riv Enteir'Vehicles
Twelve of the crashes occurred at the Daisy Street at Bob Straub Pkwy intersection. Nine of the twelve
crashes were angle collisions. Eight of the nine angle crashes involved westbound vehicles colliding with
southbound vehicles. The ninth angle crash involved a westbound vehicle colliding with a northbound
vehicle. Of the total 12 crashes, 9 resulted in an injury. This intersection will be investigated for a traffic
signal installation.
The following table lists the crashes occurring on Daisy Street between 4T" Street and Bob Straub
Parkway by year.
Table 3: Daisy Street Between 424 Street and Bob Straub Pkwy. Crashes by Year
-Off Entmng Vehk s
Access Engineering LLC December 15, 2021
Collision Types
Back-
Tum Angle 55-0 O -Tum Total
ing
Severity
PDO Injury
location
Inter- Mid -
section block
0
0
2
0
0
2
2
0
0
2
r
0
1
0
1
0
2
0
2
0
2
1
0
0
0
0
3
1
2
0
3
1
2
0
0
1
4
1
3
3
1
0
2
2
0
0
6
6
0
t
5
2
5
4
1
1
17
10
T
4
13
-Off Entmng Vehk s
Access Engineering LLC December 15, 2021
Woodland Ridge Subdivision Traffic Impact Analysis Page 4
A total of 17 crashes have been reported on Daisy between 42" and Bob Straub Pkwy; six occurring in
2019. There were two crashes reported at the Daisy @ 47"' Street intersection and one crash each reported
at the intersections of 43'" Street, 51"Place, and Ridge Drive with Daisy Street. There were a total of six
collisions with midbtock parked vehicles on Daisy Street In addition there were three sideswipe collisions
on Daisy, two eastbound and one westbound. One collision involved a vehicle backing up. That vehicle
backed out of a driveway midway between 49'" Place and 51" Street and struck a westbound vehicle
resulting in minor injuries. The other occurred when a vehicle on 44`" Street backed into the Daisy Street
intersection resulting in a minor injury.
5, Transit
Lane Transit District provides transit service in the Fugene-Springfield Metro area. Route 11 - Thurston
Runs between downtown and the Thurston area. Near the Woodland Ridge subdivision, the closest bus
stops in both directions are on Main Street.
6. Pedestrian and Bicycle Facilities
Daisy Street has sidewalks on both sides between Bob Staub Pkwy and 42" Street except for the north side
of Daisy from 51" Pl. to 52°" Street. That block of Daisy is only 24 feet in width. 51"Pl. has no sidewalks
between Daisy and Main Streets. Sidewalks exist on both sides of Holly Street and 48'" Street to the west
and 51"Pl. from Woodland Ridge northwest to Daisy Street. Main Sheet can be reached by sidewalk on
49" Place/Aster Stteet148"' Street; of on 52"" Street or 52" Place. All streets in the Woodland Ridge
subdivision will have sidewalks on both sides of the streets.
The Springfield Transportation System Plan, adopted in 2014, has several pedestrian and bicycle projects
in the Woodland Ridge study area. The following projects are listed on the Capital Improvement Plan.
R-44: At the Bob Straub Parkway at Daisy Street intersection, a pedestrian/bicycle signal and crossing or
under crossing are proposed at Daisy Street.
R-39: Construct collector extension of 48a Sheet from Daisy Street north to Aster Street south of Main.
R-42: Extend Holly Street from S 48'^ Street to S. 57's Street. - Woodland Ridge will build the section on
site, connecting from S 48th to the Holly Street stub at the east site boundary.
R-41: Construct new collector IS 50 St.) from Main Street to Daisy Street (More than 20 years out.)
PB -36: Daisy/Virginia Bike Boulevard IS. 32"" to Bob Straub Pkwy.) Phase I completed between 42"
Street and 51" Street. Roundabouts are proposed for Daisy at 42" and 51"PL
The Virginia -Daisy Bikeway Project, PB -36, will provide an east -west bike network option that will serve
as an alternative to Main Street and will include design development that considers, but is not limited to,
treatments such as striping of bicycle lanes, sharrows, traffic calming infrastructure, intersection
treatments, automobile traffic diversion, limited lighting additions, ramp improvements, speed and
designation signs, and a crossing improvement at 42nd St. Additionally, the project strives to enhance the
overall appeal of the corridor for all users and residents, improve pedestrian safety and usage, and provide
traffic calming to emphasize safety and active transportation along the street. The proposed roundabouts at
486 Street and 51" Place will be included as potential improvements to those study area intersections in the
traffic analysis section.
Access F.rrgineering LLC December 15, 2021
Woodland Ridge Subdivision Traffic Impact Analysis Pane 5
JUL Traffic Analysis
1. Trip Generation
The trip generation for the proposed 253 Single -Family residences is taken from the Tenth Edition of the
Institute of Transportation Engineers' (ITE) Trio Generation Manual using the land use code 310 -
Single -Family Detached Housing. The table shows the new trips at the conclusion of the phase.
Table 4: Trip Generation, Weekday, AM and PM Peak Hours - Single -Family Detached
Site
Phasing
Phase
Total
Site
Total
Units
Rate• Trips
Ran-
AM Peak Hour
Rate Trips 11 In Out
PM Peak Hour
Rate Trips I In Out
Phase
52
52
nwlling Units
964
491
0.74
39
10
1 36
099
52
1 33
19
Phase
53
105
Dw Il'mg Unita
9.44
991
6.74
78
19
59
0.99
104
65
39
Phaee6
38
10.?
Onelling Unit,
9.d4
1350
0.]4
108
26
80
099
142
89
53
phase6
41
184
Gaeling Units
9.44
1737
074
136
34
102
099
182
115
67
Phase]
46
230
n (ling Ures
844
2171
0.74
170
43
121
0.99
220
143
85
Pha92a
23
253
Dx Iling Units
9'"
2386
074
187
4]
140
0.99
250
158
92
2. Trip Distribution
During the PM peak hour trips are predominantly work or shopping to/from home. These trips are made
to and from the industrial and commercial areas in the Eugene - Springfield area but predominantly to and
from Fast Springfield. In discussions with the City, the following distribution plan was adopted based on
LCOG model runs:
• 40% will use the Highway 126 freeway to the North and West; 25% from the Bob Straub Parkway
north of Daisy Street and 15% from Main Street east of 51" Place.
• 25% will use Bob Straub Pkwy north from. Daisy Street in Highway 126 freeway at Main Street.
15% will use Main Street east to Highway 126 freeway at Bob Straub Pkwy..
• 5% will use 4P Street north from Main Street and west from 51" Place.
• 25% will use Daisy Street cast of 51"Place to Bob Straub Parkway with 5% continuing east and 20%
turning north onto Bob Straub Pkwy.
• 45% will use 51" Place north of the subdivision to Daisy Street
• 100/9 will use Holly Street east to 55i6 Street...
- then 5% north to Ivy Street to 551h Place to Glacier Driver to Bob Straub Pkwy and north.
- and 5% south to Mt. Vernon Rd., then east to Bob Straub Pkwy and south.
• 40% will use Holly Street and 4V Street to Daisy Street and continue east on Daisy to 42" Street and
disperse north, east. and south.
The City of Springfield's Scope of Work has selected the following intersections for analysis:
Bob Straub Parkway at Daisy Street and 57r6 Street; 51 at Place at Daisy Street and Main Street; and Daisy
Street at 45" Street and 42" Street. The City has also requested a Stop Sign Warrant Analysis for the 51"
Place and Forsythia Street intersection built in Phase 1 of the development. And the City is requesting a
Signal Warrant analysis for Bob Straub Parkway at Daisy Street/57th Place.
Access Engineering LLC December
Woodland Ridge Subdivision Traffic Impact Analysis Page 6
3. Existing Traffic Conditions
Manual traffic classification counts were taken at the following study area intersections: Daisy Street at
Bob Straub Parkway, 51" Place, 48'^ Street, and 42'" Street: Main Street at 51" Place; and Bob Straub
Parkway at 57'" Street Counts were taken from 4 to 6 PM on Thursday November 0, 2021 by Quality
Counts LLC. The peak hour varied from intersection to intersection so the individual peak hour volumes
were used due to the overall length of the study area. Quality Counts also performed 24-hour counts on
each leg of the Bob Straub Parkway at Daisy Street intersection on November 18" for a traffic signal
investigation. The traffic counts can be found in Appendix B.
4. Seasonal Factor
The intersection counts were taken on November 9's, 2021. In order to assess the worst case traffic
impacts these counts should be translated to the highest traffic month of the year. ODOT provides
guidelines for determining design hour volumes (DITV). Design hour volumes are the 30th highest hour
volume for a given year. ODOT's Analysis Procedures Manual (APM) provides three methods for
evaluating the seasonal factor. The first method is to consult an existing Automatic Traffic Recorders
(ATR) in the nearby area. There are no ATR's nearby. The second method is to use the ATR
Characteristic Table to find a similar highway. A check of highways in the Table found no good matches.
The third method is the Seasonal Trend Table. The cormnuter seasonal trend is estimated using ODOT's
2020 Seasonal Trend Table. The resulting seasonal factor of 1.08 and is applied to all existing
movements in the study area during the peak hour. The calculations are shown in Appendix B and the
DH V's in the study area are shown on Figure 3 in Appendix A.
5. Intersection Operations Analysis - General Procedures
The City of Springfield and Lane County use different mobility standards. For City streets, Springfield
uses Levcl-of-Service (LOS) which is based on average delay per vehicle. LOS measures the quality of
traffic flow at an intersection by estimating the average delay encountered. It is described by a letter scale
from "A" to "F (see below).
Level of Service Traffic Signal Stop sign
A o10 sec s>10 sec
10-20 see 10-15 sec
20-35 sec 15-25 sec
Level of Service
Traffic Signal
Stop sign
D
35-55 sec
25-35 sec
E
55-80 sec
35-50 sec
F
>80 sec
>50 sec
Springfield requires TIA's to identify all intersections with a LOS of E or worse.
Lane County has the following requirements:
(a) Signalized, All -way Stop, or Roundabout Controlled Intersections: The intersection as a whole must
operate with a Level of Service (LOS) "E" or better and a volume to capacity (v/c) ratio not higher than
0.85 if inside an Urban Growth Boundary. For Bob Straub Parkway, an urban minor arterial, inside a
UGB in the Eugene -Springfield Metro Area, the maximum allowed volume to capacity ratio is 0.85.
(b) Two-way Stop and Yield Controlled Intersections: All public street intersection approaches serving
more than 20 vehicles during the highest one hour period on an average weekday (typically, but not
always the evening peak period between 4 p.m. and 6 p.m. during the spring or fall) must operate with a
LOS "E" or better and a v/c ratio not higher than 0.95 if inside and UGB.
Access F;ngineering LL(- Dcecmber 15,
Woodland Ridge Subdivision Traffic Impact Analysis Page 7
6. 2021 Existing Intersection Operational Analysis
The Synchm program is used to evaluate the operation of all intersections in the study area. The heavy
vehicle percentages, and bike and pedestrian numbers from the traffic counts were used. SimTmffic was
used to evaluate the queue lengths at the study area intersections following the guidelines in Chapter 8 of
ODOT's APM. Five runs with a random seed were averaged. The 95" percentile queues are reported and
are rounded to the next nearest 25 -foot increment. Figure 3 in Appendix A shows the existing layout of
each study intersection and the design hour volumes (DHV's) for the PM peak hour. The Synchro reports
are in Appendix C. Table 5 shows the results of the operational analysis for 2021 traffic levels.
Table 5: 2021 Existing Intersection Operational Analysis
Intersection
Mobility
PM Peak Hour
95e %dile Queues
Momemeet
Standard
VIC Delay LOS
Available Existing
(sec)
Storage Queues
Bob Straub Pkwy @ 57^ Street
Vlc = 085
0.39
12.1
B
Northbound Left turu
225
--
NOM bound Through Right
1000+
75
Southbound Left lura
125
25
Soulkbouno Though
East hound Movements
675
75
WesMaund Movements
1 D
100
150
150
Bob Straub Play @ Daisy Sweet
NorNboueWLeB.Wm
VM=085
0.02
87
A
150
25
NaMbmnd Through+ Fight
VIC=0.85
A
6T5
25
SouthbawW Left Nm
VX=085
ON
7.9
A
275
25
Southbound Through +Rght
vM-085
A
1000+
25
Eastbound Mwements
LOS =D
0.44
310
0
150
75
Westbound Movemems
LOS =D
030
22.6
C
35(250)^
75
Main Street @ 51^ Place
Northbound Movements
LOS =D
0.16
23.1
C
500+
50
Southbound Movements(Dvy)
LOS =D
0.34
22.0
c
25
75
E.Mb.ued Left-Wms
LOS=O
001
9.5
A
325
25
Eastbound Through +Right
LOS =O
325
25
Woal000d Left -turns
LOS =D
003
99
A
175
50
Westbound Through + Right
LOS =D
--
--
—
175
25
Daisy Street @ 51^ Place
Northbound Mwemann
LOS =D
0.03
9.8
A
275
50
Southbound Mwements
LOS =D
004
106
B
450
50
EeAbound Mwements
LOS =D
001
7.5
A
175
25
Westbound Mwenretas
LOS =O
0.01
7.4
A
375
—
Daisy Street @ 46'" Street
NoodecuM Movements
LOS=D
0.0
8.7
A
150
50
IF,eftxnmd Mwements
LOS=O
000
A
475
—
WesNoundM hhi
LOS =D
0.01
7.5
A
200
—
Daisy Street @ 42nd Street
Northbound Movements
LOS =O
0.02
8.5
A
500+
50
Southbound LehWit
LOS =D
0.10
82
A
75
]5
Southbound Through+Right
LOS =D
A
1]5
50
Eastbound Left+Through
LOS =D
0.27
358
E
125
]5
Eastbound Right -tum
LOS =D
002
111
B
125
50
Westh.ued LeO+Through
LOS=D
0.09
13.9
B
275
75
Westbound Right -turn
LOS =D 1
009 1
10.3
B
125
]5
All movements at the study intersections operate at acceptable levels -of -service except for the eastbound
movements on Daisy Street at 42W Street which operates at LOS E under existing conditions, however
eastbound queues are do not exceed storage.
Access Engineering LLC December 15, 2021
Woodland Ridge Subdivision Traffic Impact Analysis Pane 8
Previous studies in the area have indicated that the intersection of Bob Straub Parkway at Daisy Street
may meet the minimum requirements for a traffic signal in the near future. As a result, hose counts were
taken by Quality Counts on all approaches to the Bob Straub Parkway at Daisy Street intersection on
November 18, 2021. The data is found in Appendix B.
The ODOT Preliminary Signal Warrant Analysis was run for the intersection using 70% of the standard
warrant due to the 45 MPH speed limit on Bob Straub Parkway. The results indicate that the intersection
does meet the minimum interruption of continuous traffic, Case B, needed to warrant a signal installation.
The 24-hour tmfiic count data from November 18th showed that the intersection falls just short of the
Manual on Uniform Traffic Control Devices (MUTCD) Warrant 3, Peak Hour. One minor approach must
have 100 vehicles per hour (veli) to meet the 70% of Warrant but eastbound Daisy was the highest
approach at only 97 vph westbound during the AM peak hour and 92 vph in the PM peak hour. The
intersection also falls just short of the requirements for MUTCD Warrants I & 2, the Eight -Hour and the
Four -Hour Warrant Volume warrants. As a result, for future years' analyses, both a 2 -way Stop and a
traffic signal will be analyzed for that intersection.
7. 2027 Intersection Operational Analysis
The Woodland Ridge phases 3 through 8 is planned to be completed in 2027. Figure 4 shows the full
buildout trips assigned to the study area. Lane Council of Governments has provided traffic model data a
growthrate for traffic in southeast Springfield to use to estimate traffic background traffic in 2027. The
growth rate varied by intersection from:
3.95%/yr all approaches at Bob Straub @ Daisy and 57th
•Daisy @ 42nd - 1.275% all approaches
•Main @ 51st PI - 2.0% Main approaches only
•Daisy @ 51st P1 & 48th: 1.0 % all approaches unless 48th is extended.
Figure 5 in Appendix A shows the DHV's in 2027 for the no -build conditions compared to the buildout of
Woodland Ridge. The Synchro reports are in Appendix C. With a growth rate of 3.95%/year, MUTCD
Warrant #3 will now be met with or without the development at the Bob Straub Parkway at Daisy Street
intersection. Table 6 on the following page shows the results of the operational analysis for 2027 traffic
levels for the full buildout with and without a traffic signal at Bob Straub Parkway and Daisy Street.
By full buildout of Woodland Ridge in 2027, the eastbound Daisy Street approach to Bob Straub Parkway
is now at LOS = F with queues exceeding the available storage without a traffic signal.
8. 2032 Intersection Operational Analysis
Five years after buildout of Woodland Ridge, background traffic is assumed to continue to grew at the
same rate. Figure 6 in Appendix A shows the DHV's in 2032 for the no -build conditions compared to the
buildout of Woodland Ridge. The Synchro reports are in Appendix C. Table 7 on the page 10 shows the
results of the operational analysis for 2032 traffic levels for the full buildout with and without a traffic
signal at Bob Straub Parkway and Daisy Street.
Access Engineering LLC December 15, 2021
Woodland Ridge Subdivision Traffic Impact Analysis Page 9
Table A• 2m91..4o.roo..w— rl..e.—i--- 1 4--1--;
VMobility
Mobility
Standard
—.1Build
Available Stoag
Feet Build
Intersecthat
VIC = 0.65
051
Available Sleag
Movement
Standard
Nonhbound Lee Wm
VIC Delay LOS
Fast Build
225
25
(sec)
Bob Straub Pksy @ 5T"Street
VIC =065
051
144
B
S.hgound Leh Wm
NoMbauMLeftt•.an
125
25
225
25
NwOrbound Through+ Right
675
100
1000+
Ire
SouMbouM Left tum
100
150
125
25
Souhi Thmugh+Right
150
225
675
75
Eaatbound Mwamems
128
A
10
1 W
WestboundM .sffle
150
50
150
150
Bob Straub Pkwy @ Daisy Street
STOP
675
100
SouTbouM Leif Wm
Nadhbound Left turn
VC=0.05
0.02
9.2
A
150
25
N=bound Through + Rigir
VIC=0.85
1000+
A
675
Southbound Left Nm
VIC =0.85
005
8.1
A
275
50
Southbound Through + Right
VIC =0.85
250
A
1000+
25
EasiboundMwamenis
LOS =D
0.98
118.8
F
150
175
Westbound Movements
LOS =D
0.50
38.0
E
35(250)"
100
Main Street @ 51° Place
Nohhbound Mevemenls
LOS -1)
0.26
26.1
D
500+
100
SouMbound WIemenis(Owy)
LOS=D
004
247
C
25
50
Eastbound Left-Wms
LOS =D
001
95
A
325
25
Eastbound Through+Right
LOS =D325
50
s
Vk.nd Left -Watt
LOS=D
006
102
B
175
50
Westbound Through + Rigid
LOS=D
—
—
—
175
25
Daisy Btreed @ $lot Place
Nwlhbwrd Movements
LOS =D
010
104
8
275
50
SouMbound MomneMs
LOS = O
0.11
12.8
B
450
100
Eastbound MovermMs
LOS =O
0.01
75
A
175
25
Westbound Movements
LOS =D
0."
7.4
A
375
25
Daisy Street @ 48- Street
NOMbound M.vhssnis
LOS =D
0.08
10.5
B
150
100
Eastbound Mwements
LOS =D
0.00
A
475
Westbound Mwemenas
LOS = D
001
] e
A
200
50
Daisy Street @ 42na Street
Northbound Movemmta
LOS = D
0.03
8.6
A
500+
50
Southbound Lea -fume
LOS = D
0.15
&4
A
75
75
Southbound Thmugh+Right
LOS =D
A
175
25
Eastbound Loft+Throu9h
LOS =D
Sao
140
F
125
100
Fas aund Right-Wr,
LOS =O
003
114
B
125
50
WestboundLeft+Through
LOS =D
020
103
B
275
75
Westbound RQM-tum
LOS =O
012
10.6
B
125
75
With coordinated traffic signals:
Inteamtion
Movement
Mobility
Standard
Build
VIC Delay LOS
{sec)
Available Stoag
Feet Build
Bob Straub Pkwy @ 57- Street
VIC = 0.65
051
142
8
Nonhbound Lee Wm
225
25
Northbound Thmugh+Right
1000+
100
S.hgound Leh Wm
125
25
Southbound Thmugh +Right
675
100
Eastbound Movements
100
150
W.ftund M.hanns
150
225
Bob Staub Pkwy @ Daisy Street
VIC 0.85
0.311
128
A
N.r imMd Lek tum
150
50
Nodhhamd Through+Right
675
100
SouTbouM Leif Wm
275
125
S,Whbowd Through + Right
1000+
150
Eastbound Mwements
150
200
250
m
The traffic signal at Bob Straub and Daisy will provide a LOS = A but minor queues on Daisy remain.
due to short block lengths.
Access Engineering LLC December 15, 2021
Woodland Ridge Subdivision Traffic Impact Analysis Page 10
Table 7: 2032 Intersection Operational Analysis
Interseetlon
Mobility
Build
ableStorag
Movement
Standard
Vic Delay LOS
Feet Build
B
(saW
NoMbound Left tum
Bob Straub Pkwy @ 57" Street
VIC-085
0.61
144
B
25
Nodhbound Through+Right
Narlhbwntl Lett han
1000+
225
25
Nathbaund Through +Fight
125
1000+
125
SoaOrbound Left Wm
675
125
50
Soutliri Through+Right
100
675
150
Eastbound Movements
150
100
t]5
Westbound Movements
048
155
A
150
225
Bob Straub Pkwy @ Daisy Street
STOP
150
50
NodhbOUM Through+ Right
NoMbound Left tum
VIG=0.85
003
as
A
150
25
Nodhbound Through+Right
VIC=0.85
A
675
SaulM1bowd Through+Right
S,-thbound WR Nm
WC=0.85
0.07
8.4
A
275
50
SOulhhowd Through+Right
VIC=085
A
1000+
Eastbound Movements
LOS =D
2.43
776.8
F
150
300
Westbound Movernems
LOS =D
0.93
121.1
F
35(250)^
175
Main Street @ 51" Place
Nodhbound Mwemerds
LOS=D
0,21,
269
D
500+J
Southti Mwements(Duy)
LOS =D
0.05
24.6
G
25
Eastbound Left-Wms
LOS=D
0.01
95
A
325
Eastbound Through+Rohr
LOS =O
325
Westbound LeR4ums
LOS=D
ow
102
B
175
Westbound Through+ Right
LOS =D
—
—
—
175
Daisy Sheet @ St. Place
Nathbwnd Mwerrents
LOS =D
0.10
105
B
275
50
Southbound Movamenta
LOS =D
0.12
128
B
450
100
Eastbound Movemenb
LOS =D
got
73
A
175
25
Westbound Moiamns
LOS =D
0114
74
A
375
25
Daisy Street @ 4as Street
Northbound Movements
LOS = D
0.06
10.5
B
150
100
Eastbound Mwemenls
LOS =D
0.00
A
475
Westbound Masemems
LOS =D
001
76
A
200
25
Daisy Street @ 42"' Street
Northbound MOVements
LOS =OL0,038.7
A
500+
50
Sauthbaund Left -tum.
LOS=D
A
75
]5
Southbound Through+Right
LOS=DA
175Eastbound
Left+Thmugh
LOS=D
F
125
100
EastbourM Rohl -Wm
LOS=D
B
125
50LOS=D
C
275
75
L05=D
B
125
15
With coordinated traffic signals:
Irdereection
Movemam
Mobility
Standard
Build
Vic Delay Los
last)
Available Starag
Feet Build
Bob Straub Pkwy @ Sr Street
V/C=0.85
0.61
175
B
NoMbound Left tum
225
25
Nodhbound Through+Right
1000+
100
SouNb.rid Left tum
125
50
Southbound Through+Right
675
175
Eastbound Mwemenfs
100
150
WesWOUM Moishcoh:
150
225
Bob Straub Privy @Daisy Street
wC=0.8.5
048
155
A
Northbound Left Wm
150
50
NodhbOUM Through+ Right
675
125
Southbound Left tum
275
1 W
SaulM1bowd Through+Right
1000+
150
Eestbourd Mwerrrenb
150
200
5 250 "
150
Access Engineering LLC December 15, 2021
Woodland Ridge Subdivision Traffic Impact Analysis Pave I l
Overall, the Woodland Ridge development will have a minor impact on traffic in the study area. The
only significant impact is at the Bob Straub Parkway intersection with Daisy Street where the existing
Stop sign control results in the current LOS = D. By buildout of Woodland Ridge, it is assumed that 25%
of Woodland Ridge trips would use the Bob Straub Parkway via Daisy Street and 51" Place and the LOS
at buildout in 2027 falls to F at DaisyiBob Straub Pkwy. The ODOT Preliminary Signal Warrant
Analysis found that the intersection currently (2021 traffic) meets the 70% Warrant - (Case B) - minimum
interruption of continuous traffic. The intersection was also very close to meeting the MUTCD signal
warrants (Warrants 1, 2, & 3). By buildout of Woodland Ridge, the Bob Straub Parkway at Daisy Street
exceeds the signal warrants due to an expected growth rate of almost 4% per year due continued
developments to the south on Bob Straub Parkway as well as the Woodland Ridge development.
At the intersection of Daisy Street at 42nd Street, the eastbound left -tum movements currently experience
LOS = E. By 2027, that movement falls to LOS = F with or without Woodland Ridge, The City of
Springfield plans to convert the intersection into a roundabout at some point in the future. All other
movements at the study area intersections operate at LOS D or better through 2032.
9. Stop Sign Request at Forsythia and 51r Place
The City of Springfield has received a request to install a Stop sign for east and west traffic on Forsythia
Street at 51"Place which was constructed during phase 1 of this development. The 2016 edition of the
MUTCD (Manual on Uniform Traffic Control Devices) has the following guidance:
03 YIELD or STOP signs should be used at an intersection if ane or more of Ute following conditions
exist
An intersection of a less important road with a roar road where application of the normal right -o f-wav
rule would not be expected to provide reasonable compliance with the Imv;
A street entering a designated through highway or street; and/or
An unsignalized intersection in a signalized area.
None of these conditions currently apply since 51"Place does not currently extend south of Forsythia.
With development of phases 3 through 8, however, 51"Place, though categorized as a local street, will
become one of the major access routes for phases 3 through 8 carrying an estimated 45% of the site
traffic.
04 In addition, the use of YIELD or STOP signs should be considered at the intersection of iwo minor
streets or local roads where the intersection has more than three approaches and where one or more of
the following condition., exist:
The combined vehicular, bicycle, and pedestrian volume entering the intersection front all approaches
averages more than 2,000 emits per day;
At full buildout, 51" Place is projected to receive 45% of the traffic from phases 3 through 8. Those
phases are expected to generate a total of 2442 daily trips. For 51" Place at Forsythia.. 45% of those trips
equals only 1099 daily trips. Road tube traffic counters were set out on the Forsythia Street approaches to
51st Place from Tuesday December 71h to Friday December IOth. On the average day there were 115
vehicles eastbound approaching 51 st Place and 84 westbound The highest hourly volumes were: 18
eastbound and 14 westbound. The total daily trips = 1099+115+84 =1298 vehicles per day, is well
below the threshold for a control sign.
Access Engineering LLC December 15, 2021
Woodland Ridge Subdivision Traffic Impact Analysis Paee 12
The ability to see conflicting traffic on an approach is not sufficient to allow a road user to stop or yield
in compliance with the normal nghbof--way rude if such stopping or yielding is necessary,
There are no impediments to sigbt distance on either Forsythia approach except for occasional parked
can. ODOT provides safe stopping distances (SSD) for various speeds. For 25 MPH the SSD is 155
feet. Them are no impediments to vision from either Stopped position. See photos in Appendix C.
Crash records indicate thatfire or more crashes that involve the failure to yield the right-of-way at the
intersection ander the normal right-of-way rule hate been reported within a 3year period or that three
or more such crashes have been reported within a 2 -pear period.
No crashes have been reported at the intersection.
05 YIELD or STOP signs should not be used for speed control.
Section 211.06 STOP Sign Applications
Guidance:
01 At intersections where a fidt.stop is rax necessan• at all times, consideration .should first he given to
using less restrictive measures such as YIELD signs (see Sections 2B. 08 and 2B.09).
02 The use afS7'0P signs an the minor -street approaches should be considered if engineering judgmem
indicates that a stop is always required because of ane or more of the following conditions:
The vehicular traffic volumes on the through street or highway exceed 6,000 vehicles per day,'
A restricted view exists that requires road users to stop in order to adequately obsen•e confiteting
tragic on the through street or highway; and/or
Crash records indicate that three or more crashes that are susceptible to correction by the installation.
afa STOP sign hme been reported within a 12 -month period, or that five or more such crashes have been
reported within a 2 -year period. Such crashes include right-angle collisions im'olving road users on the
minor -street approach failing to yield the right -of -wap to traffic on the through street or highway.
The intersection does not now, or wilt have after Woodland Ridge is complete, the required minimum
traffic, does not have a restricted view, or have a crash history. Based on this data a Stop sigh on
Forsythia at 51st Place does not meet warrants.
Access Engineering LLC December 15, 2021
Woodland Ridge Subdivision Traffic Impact Analysis Page 13
III. Conclusions and Recommendations
• Phases 3 through 8 of Woodland Ridge, a single-family residential subdivision in southeast
Springfield, will generate 2442 daily trips at buildout of the site scheduled for 2027.
• There were a total of 36 crashes at the study intersections, 12 occurring at the Bob Straub Pkwy. at
Daisy Street intersection; nine were angle crashes involving eastbound/southbound vehicles. On
Daisy Street between Bob Straub and 42n° them were 17 crashes during the five year study, six
occurring in 2019.
• The distribution of new trips will be scattered over the Eugene -Springfield Metro Area. The city has
specified the analysis to be confined to Daisy Street from 42nd Street to Bob Straub Parkway
including the intersection with 51" place: Bob Straub Parkway at Daisy and 57" Streets, and 51"
Place at Main Street during the PM peak hour only for the buildout of development. In addition, the
City of Springfield has received a request for Stop sign(s) on Forsythia Street at 5 1" Place.
• The operational analyses of the study area intersections for existing, 2021 conditions, finds that the
Bob Straub at Daisy Street intersection provides a LOS = D for eastbound movements. However, the
intersection does meet ODOT's 70% Preliminary Signal Warrant, but does not meet MItTCD
warrants at this time. All other intersections studied operated at LOS D or better except for eastbound
left -turns on Daisy at 42"d Street (LOS=E).
• By buildout of Woodland Ridge in 2027, eastbound Stop movements on Daisy at Bob Straub will fall
to LOS —F and westbound movements are LOS=E. At this time the intersection will exceed the
MUTCD warrants 1 through 3 for provision of a traffic signal. If signalized, the intersection will
operate at LOS = A but eastbound and westbound queues remain. The eastbound left -tum on Daisy
Street at 42"d Street will fall to LOS —F. All other movements there and at the remaining study area
intersections operate at LOS = D or better.
• By 2032, a signal at Bob Straub Parkway and Daisy Street will remain at LOS =A. The eastbound
left -tum on Daisy Street at 42"d Street will operate at LOS F and all other study area intersections
operate at LOS =D or better.
• Stop sign warrants for Forsythia Street at 5 P' Place are not met and will not be met at full buildout of
Woodland Ridge.
Based on the above findings, we recommend approval of the proposed Woodland Ridge development
expansion. Traffic from Woodland Ridge will impact the intersection of Bob Straub Parkway at Daisy
Street. However, the estimated nips from the site (14 eastbound left-mms and 23 southbound right -turns)
at buildout, 2027, is a small percentage of the estimated total trips - 37 out of a total 1348 = 2.7% and this
percentage will continue to decrease over time.
Across F_ngineering LLC December 15, 2021