HomeMy WebLinkAboutDISCOUNT TIRE AT FOSSIL CREEK - PDP/FDP - 26-02 - SUBMITTAL DOCUMENTS - ROUND 2 - TRAFFIC STUDYSUMMARY AND RECOMMENDATIONS
Based upon the findings in the study, the following summary and recommendations are made:
1) The intersection of Fossil Creek and College Avenue will operate at acceptable levels of
service in 2007 both with and without this project.
2) The driveway entrance into the development will also operate at acceptable levels of
service in 2007 once this development is constructed.
3) The sight distance to the west provides for an 85`h percentile operating speed of 30 mph
along Fossil Creek Parkway.
4) This development will construct an exclusive right turn deceleration lane along South
College Avenue for access into Fossil Creek Parkway.
5) No auxiliary lanes are required at the driveway entrance into the development.
6) Adequate multimodal service is provided adjacent to the site.
Discount Tire Traffic Impact Study Page 14
Institutional Areas - None
Office Buildings - There are office complexes directly north and across College Avenue.
Commercial - None
Industrial - These have been included with the office.
Step 4 5 - Evaluate Actual LOS in Figure 6
Figure 6, included in Appendix C, has been filled out with the appropriate Level of Service
evaluations based upon actual field determinations.
Bicycle LOS
Of the priority destinations, only Recreation Sites (The trailhead east of the property) is within the
quarter mile range of the site. The Bicycle LOS worksheet for this site was produced and is
included in Appendix C.
Summary
Based upon these analyses, this site provides adequate LOS for all three alternative modes of
transportation, Bikes, Pedestrians and Transit.
Discount Tire Traffic Impact Study Page 13
ALTERNATIVE MODES ANALYSIS
This section addresses the alternative modes analysis for the site. The alternative modes analysis
was performed based upon the criteria contained in the "City of Fort Collins Multimodal
Transportation Level of Service Manaul", March 28, 1997.
Public Transit LOS
This store is adjacent to South College Road. There is currently transit service along this corridor
from 6:15 AM to 7:03 PM (13 hours) with a frequency of 60 minutes. The existing service route
is included in Appendix C. This corridor shows up on the City of Fort Collins 2015 Transit
System as a High -Frequency Transit corridor. This site will has transit service within a quarter
mile at the present time and will have very acceptable transit service in 2015.
Pedestrian LOS
Step one - Types of Locations
The site has been evaluated based upon the following districts:
Pedestrian District - No
Activity Corridor - No
Transit Corridor - Yes
School Walking Area - No
Other - No
Step two - Determine Applicable LOS minimum Standards
Based upon Figure 5, the pedestrian standards are as follows:
Directness - B
Continuity - B
Street Crossing - B
Visual Interest - C
Security - B
Step 3 - Identify Destination Areas
Destination Areas have been determined as follows:
Recreational Areas - There is a trailhead with parking directly east of this site.
Residential Areas - The subdivision directly to the east of this development.
' Discount Tire Traffic Impact Study Page 12
Capacity Analysis Results
The results of the capacity analysis show that all of the driveways will operate at an acceptable
level of service in 2007 in both the AM and PM peak hours.
The intersection of South College Avenue and Fossil Creek Parkway will operate at an overall
Level of Service C in all three conditions.
RIGHT TURN DECELERATION LANES
The Colorado Department of Transportation has requested that a separate right turn deceleration
lane be added to the northbound approach of South College Drive and Fossil Creek Parkway.
This has been added to the design.
The entrance to the Discount Tire store does not have sufficient volumes to warrant separate right
turn deceleration lanes.
SIGHT DISTANCE REQUIREMENTS
The location of the driveway entrance to the tire store is approximately 400 feet east of South
College Avenue. There are several design constraints with the layout of the building that have
dictated the location of this driveway. Using a sight triangle to the west, the sight distance
provided along Fossil Creek is approximately 345 feet.
Equation 9-1, of the 2001 AASHTO publication states:
ISD = 1.47*V*t
ISD = Intersection Sight Distance
V = Design Speed
t = acceptable driver gap. (7.5 seconds for a two-lane roadway and 8.0 for a four lane roadway)
Using an 8.0 second gap, the speed associated with this gap is 30 mph.
The current posted speed along this stretch of Fossil Creek is 25 mph, so it would appear that this
sight distance is adequate.
Fossil Creek is going to be improved with bike lanes and curb and gutter in the near future. Since
the basic alignment of the roadway is not changing, it is unclear how this will impact the 85
percentile speed, but it will likely not increase significantly.
IDiscount Tire Traffic Impact Study Page I I
CAPACITY ANALYSIS
Capacity analysis was performed for the unsignalized driveway entrance to this development and
the signalized intersection of South College Avenue and Fossil Creek Parkway. The capacity
analysis was performed using the methodology contained in Special Report 209, Highway
Capacity Analysis, Transportation Research Board, 2000 edition. The HICAP 2000 program,
developed by Catalina Engineering, was used to implement the analysis. This program faithfully
reproduces the methodology of the Highway Capacity Manual and was developed by Catalina
Engineering, in Tucson, Arizona.
For the 2007 analysis, it was assumed that the roadway geometry would remain the same as exists
today at the intersection of Fossil Creek Parkway and South College Avenue. Table 4 shows the
results of the capacity analysis for the unsignalized driveway. Table 5 shows the results for the
capacity analysis at the intersection of Fossil Creek Parkway and South College Avenue. Detailed
printouts of the capacity analysis are provided in Appendix B.
Table 4. Capacity Analysis at the Driveway
Driveway and Year
Delay in Seconds (Level of Service)
Minor Street Left
Major Street Left
Out (NB LT)
In (WB LT)
AM Peak
12 (B)
8 (A)
PM Peak
12 (B)
8 (A)
Table 5. Capacity Analysis at Fossil Creek Parkway /South College Avenue
Analysis Condition
EB
WB
NB
SB
Intersection
Existing Traffic Volumes
AM Peak
35 (D)
40 (D)
22 (C)
14 (B)
21 (C)
PM Peak
44 (D)
47 (D)
25 (C)
21 (C)
24 (C)
2007 Base Traffic Volumes
AM Peak
36 (D)
46 (D)
23 (C)
14 (B)
21 (C)
PM Peak
46 (D)
53 (D)
25 (C)
20 (B)
24 (C)
2007 Base plus Site
Volumes
AM Peak
37 (D)
47 (D)
22 (C)
13 (B)
22 (C)
PM Peak
45 (D)
52 (D)
27 (C)
21 (C)
26 (C)
Discount Tire Traffic Impact Study Page 10
A
0
0
sQ
... N N
`162(131)
4-5(5)
661 (53)
is5(5)j
1
15(15)�
N
I
u
EV�,RadixEngineering
Fossil
osCreek Fkv y
0
10 �rh
y sh
19pOesIv1
Ar,*I(1°Io�0
2007 Base plus
Site Generated Trips
Legend
23 AM Peak Hour Volume
(23) PM Peak Hour Volume
<23> Average Daily Traffic Volume
Figure 6
EEngineering
Site Generated Trips
Legend
23 AM Peak Hour Volume
(23) PM Peak Hour Volume
<23> Average Daily Traffic Volume
Figure 5
TRIP GENERATION
In order to determine the impacts to the adjacent roadway system, an estimate of trips was
developed based upon the size and makeup of this development. Nationally established trip
generation rates were used from Trip Generation, 6"' Edition, Institute of Transportation
Engineers. In this publication, the relationship between average development size and trip
generation are plotted. The resulting equations are typically non -linear or linear with a Y
intercept, i.e., the trip rate various with the size of the development. By using the equations
shown in Trip Generation, average trip rates for this development size were created and are
shown in Table 2.
Table 2. Trip Generation Rates
Use
ITE
Code
Weekday
Rate
AM
Rate
% In
AM
% Out
AM
PM
Rate
% In
PM
% Out
PM
Retail Tire Store
848
25.42
2.85
64
36
4.12
42
58
Source: ITE Trip Generation, 6'' Edition.
Using the trip rates shown in Table 2, an estimate of the total trips for the daily, AM and PM peak
period was developed. The resulting trips is shown in Table 3.
Table 3. Trip Generation
Use
Weekday
Trips
AM
Trips
AM In
AM
Out
PM
Trips
PM In
PM
Out
Tire Store
214
24
15
9
35
15
20
TRIP DISTRIBUTION AND ASSIGNMENT
ITrip distribution and assignment is the process of determining where the generated trips are
coming from and going to. Because of the location of this development, it was assumed that the
I majority of trips (95%) would be to and from South College Avenue. Of these, 80% would be to
and from the north and 15% would be to and from the south.
Using these percentages, the generated trips from this development were assigned to the adjacent
roadway network. The resulting trip assignment for the development is provided in Figure 5.
EXISTING PLUS SITE GENERATED TRIPS
The assigned trips for this development were then added.to the projected 2007 traffic volumes to
predict the traffic volumes at the five year planning horizon. The resulting AM and PM volumes
are provided in Figure 6.
Discount Tire Traffic Impact Study Page 7
o
�z
v .-.
'vo
�155(115)
M m m
4
♦— 5 (5)
r60 (50)
155((5)J
V) 1
Fossil creek Pkwy
15 (15) W
G�,
my
0
` 1
N
10
1.100?O)
ftow (7o)
W
a�.
Radix Engineering
Site
2007 Projected Volumes
Legend
23 AM Peak Hour Volume
(23) PM Peak Hour Volume
<23> Average Daily Traffic Volume
Source: South College Access Control Plan
Factored by Approach
Figure 4
n
0
0
0
V
s
<s
ono
o�
�110(80)
�40 (35)
10 (20)1
5(5)—►�tr
10(10)1
Oo�n
ONE'
N
� N
n
0
0
0
ri
n
v
W, u
EN&IEngineering
Foss'/ Creek Pkwy
i
'Sh �
So�� �SS11?0)
-v\
0
(
Y
2 �
0Zr
0
Legend
23 AM Peak Hour Volume
(23) PM Peak Hour Volume
<23> Average Daily Traffic Volume
Source: South College Avenue Access Control Plan
Existing Traffic Volumes
Figure 3
EXISTING CONDITIONS
The proposed development will be located on a the southeast corner of South College Avenue
and Fossil Creek Parkway. The adjacent roadways within the study area are described as follows:
South College Boulevard is one of the major north - south arterials within the City of Fort
Collins. At this location, there are two through lanes, left turn lanes and exclusive right
turn lanes.
Fossil Creek Parkway exists to the east of College Avenue. There is currently one lane in
each direction, but the roadway will be improved shortly to add curb and gutter and
sidewalks to the edge of pavement. The alignment of Fossil Creek is not expected to
change.
There is one driveway entrance to the project. The driveway entrance is along Fossil
Creek Boulevard.
Existing Traffic Volumes
Existing traffic volumes were obtained from a recent study of College Boulevard. Excerpts from
the study are included in Appendix A. As part of this study, recent traffic volumes were collected
at the intersection of South College Avenue and Fossil Creek Parkway. These are shown in
Figure 3.
2007 traffic volumes
The South College Avenue Access Control Plan Update also provided projected 2020 traffic
volumes at the intersection of Fossil Creek and South College Avenue. To obtain a projection of
2007 traffic volumes, average growth rates by approach were developed using the existing and
the 2020 projected traffic volumes. These growth rates were then projected five years in the
future and applied to the existing traffic volumes to estimate the base 2007 conditions. These
volumes are provided in Figure 4.
PROPOSED DEVELOPMENT
The proposed development is shown in Table 1.
Table I. Proposed Land Use
Use
Size
Unit
Retail Tire Store
8400
Square Feet
Discount Tire Traffic Impact Study Page 4
Ls=100'
NEW 15'
II
II
II
II
II
II
II
II
II
EASEMENTT
II
I I
I!
NEW PROPERTY L)#JE(
3
=17A A'
Radix Engineering
.` - - - - - - - _ _ OWNERS OF FOSSIL CREEK DESIGN CENTER
- - - - - - - AT TIME OF SNEAD DRIVE EXTENSION)
NEW 12' EASEMENT
EXISTING EDGE O/- ASPiALT ~ ���\\ EXISTING
BE
POINT OF SIGHT
(CENTER TRAVEL LANE) '1C `��\ \ \ PROPOSED EDGE
�..... ........ .sic ewa
......._...._.\............_ \ 12' EASEMENT \� \
\ \\\
I ..a
DISCOUNT TIRE
I
I
I Ate'
I
I
I
I
I
I
I
I
I
i
I
I
I
I '941, \\ \
TOTAL M PARKING SPACES
i PROPOSED PROPERTY LINE
10' PUBLIC SERVICE EASEMENT
Site Plan
-3��
1
1
1
1 1
54' ROW 1
I
I
I.
1
ro•
EDGE 8' E
-----------\`�-� -=�. PLANNED TS
NEW 12' EASEMENT
Figure 2
Radix Engineering)
-,Radix I
>
W
0)
CD
Harmony Road -
Site
00
Vicinity Map
Figure 1—
INTRODUCTION
This study was prepared to evaluate the impacts associated with a new retail tire store on the
southeast corner of South College Avenue and Fossil Creek in Fort Collins, Colorado. The
location of the development is shown in Figure 1. The new development will consist of 8,400
square foot retail tire and installation facility as shown on the proposed site plan, Figure 2.
The study methodology is as recommended in Chapter 4 of the Larimer County Urban Area
Street Standards, January 2, 2001.
Specifically, the study has performed the following steps:
• Existing and future 2020 base traffic volumes were obtained from the City of Fort Collins
from their recent "South College Avenue Access Control Plan Update"
• Proposed development site -generated trips were developed and assigned to the adjacent
roadway system based upon predicted travel patterns. These were added to the projected
2007 volumes.
• Capacity analyses were performed at the driveway entrance into the proposed
development and the signalized intersection of Fossil Creek and S. College Avenue.
• Evaluation of the entrance site distance was conducted.
• Recommendations for roadway or site improvements were made so that the development
conforms to the City of Fort Collins Standards.
Discount Tire Traffic Impact Study Page I
List of Tables
Tablet. Proposed Land Use....................................................4
Table 2. Trip Generation Rates ................................................... 7
Table 3. Trip Generation....................................................7
Table 4. Capacity Analysis at the driveway entrances ................................ 10
Table 5. Capacity Analysis at Fossil Creek Pkwy / S. College .......................... 10
List of Figures
Figure 1. Vicinity Map .................................................... 2
Figure 2. Proposed Site Plan .................................................... 3
Figure 3. Existing Volumes .................................................... 5
Figure 4. 2007 Projected Volumes ................................................ 6
Figure 5. Site Generated Trips ................................................... 8
Figure 6. 2007 Base plus Site Generated Traffic ..................................... 9
PP�p REC,iS,Tct`
HO ' 9
! 30030
`SSkinie� �G 1
Discount Tire Traffic Impact Study Page ii
TABLE OF CONTENTS
INTRODUCTION....................................................I
EXISTING CONDITIONS....................................................4
PROPOSED DEVELOPMENT................................................... 4
TRIP GENERATION....................................................7
TRIP DISTRIBUTION AND ASSIGNMENT ....................................... 7
EXISTING PLUS SITE GENERATED TRIPS ..................................... .7
CAPACITY ANALYSIS......................................I ............. 10
ALTERNATIVE MODES ANALYSIS ........................................... 12
SUMMARY AND RECOMMENDATIONS ....................................... 14
APPENDIX A - Excerpts from "South College Avenue Access Control Plan Update" ....... 15
APPENDIX B - Capacity Analysis Printouts ....................................... 19
Fossil Creek / Driveway AM ............................................. 20
Fossil Creek / Driveway PM .............................................. 30
College / Fossil Creek 2007 AM Peak No Site Traffic .......................... 40
College / Fossil Creek 2007 PM Peak No Site Traffic .......................... 48
College / Fossil Creek 2007 AM Peak with Site Traffic ...':..................... 56
College / Fossil Creek 2007 PM Peak with Site Traffic ......................... 64
College / Fossil Creek Existing AM volumes ................................. 72
College / Fossil Creek Existing PM volumes ................................. 80
APPENDIX C - Multimodal analysis ............................................. 88
Existing Transit Service along College ...................................... 89
Figure 6 - Pedestrian LOS Worksheet....................................... 90
Figure 7 - Bicycle LOS Worksheet......................................... 91
�P�O REG�sT�
00, P'WD Ho', q�
.p �•a
U• `
30030
r.
Discount Tire Traffic Impact Study Page i
Traffic Impact Analysis
Discount Tire
Fort Collins, Colorado
oo; P��D HOD•.90
U�
!, 30030 t
Is 14Ll
Prepared by:
RADIX ENGINEERING
4901 E. Dry Creek Road Suite G-10
Centennial, CO 80122
720-493-5953
August 26, 2002