HomeMy WebLinkAboutBELLWETHER FARM - PDP - 46-04 - REPORTS - TRAFFIC STUDYa
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APPENDIX G
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IV. CONCLUSIONS
This intermediate transportation impact study assessed the impacts
of Bellwether Farm Development on the short range (2007) street system
in the vicinity of the proposed development. As a result of this
analysis, the following is concluded:
The development of Bellwether Farm Development is feasible from a
traffic engineering standpoint. At full development, Bellwether
Farm Development will generate approximately 420 daily trip ends,
33 morning peak hour trip ends, and 44 afternoon peak hour trip
ends.
Currently, the key intersections operate acceptably with the
existing control and geometry.
In the short range (2007) future, signals will not likely be
warranted at any existing stop sign control intersections.
In the short range (2007) background traffic future, the key
intersections will operate acceptably.
In the short range (2007) future, given full development of
Bellwether Farm Development and an increase in background traffic,
the key intersections will operate acceptably. The recommended
short range (2007) geometry is shown in Figure 8.
The level of service for pedestrian, bicycle, and transit modes
based upon the measures in the multi -modal transportation
guidelines cannot be achieved for all measures. This is typical
in older, established areas of the City. There is little that can
be done to improve this. This development will construct a trail
between Taft Hill Road and Cherry Street.
18
Pedestrian Level of Service
Appendix G shows a map of the area that is within 1320 feet of
the Bellwether Farm Development. The Bellwether Farm Development is
located within an area termed as a "school walk area," which sets the
level of service threshold at LOS B for all measured categories,
except visual interest which is C. There are two destination areas
within 1320 feet of the proposed Bellwether Farm: 1) the
residential/Irish Elementary School area to the west and 2) the
residential area to the north. Sidewalks are sporadic within the
pedestrian influence area. In light of this, it was determined that
it is not reasonable to expect this development to complete the
sidewalk system in this area. Therefore, the City agreed that Imago
Enterprises would provide a trail from Taft Hill Road to the emergency
access road which connects to Cherry Street. Appendix G contains a
Pedestrian LOS Worksheet.
Bicycle Level of Service
Appendix G shows a map of the area that is within 1320 feet of
Bellwether Farm Development. The only bicycle priority destination is
Irish Elementary School to the west. Based upon Fort Collins bicycle
LOS criteria, the base city-wide minimum is level of service C. There
are bicycle facilities along Vine Drive. The Bellwether Farm
Development is connected to the bike lanes on Vine Drive via Brairwood
Road, which satisfies the LOS C criteria. It will also connect to
Taft Hill Road via the trail described above.
Transit Level of Service
Currently, this area is served by transit route 9 on Vine Drive.
The Bellwether Farm Development is located along a future "feeder
route." In the future, transit service will be improved as depicted
on the Fort Collins Transit System Plan. This site has acceptable
connectivity (<1320 feet) to the existing transit system. Since this
is an intermediate transportation impact study, the long range transit
system and long range transit level of service is not relevant.
17
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Daily
DAILY TRAFFIC ON INTERIOR STREETS Figure 9
16
Vine Drive
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-a — -Denotes Lane
SHORT RANGE (2007) GEOMETRY
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Figure 8
15
TABLE 3
Short Range 7) Background Peak Hour Operation
Intersection
movement
Level of Service
AM
PM
Taft Hill Road/Vine Drive
(stop sign)
Vine Drive/Briarwood Road
(stop sign)
EB LTrr/RT
C
B
WB LTrr/RT
C
C
NB LT/T/RT
C
C
SB LTIT/RT
C
B
OVERALL
WB LT
C
A
C
A
NB LT/RT
8
B
TABLE 4
Short Rang (2007) Peak Total Peak Hour Operation
M'
-7,
w.
pw
Taft Hill Road/Vine Drive
(stop sign)
EB LTITIRT
C
B
WB LTrr/RT
C
C
NB LTITIRT
C
C
SB LTrrIRT
D
B
OVERALL
C
C
Vine DrivelBriarwood Road
(stop sign)
WB LT
A
A
NB LT/RT
B
A
14
Vine Drive
210/135 —•-
5/5
v
cc
m
180/185
10/40
to
N N
O
CJO Cq W)
f 1
20/15
185/95 —�
65/35
--o--- AM/PM
Rounded to Nearest
5 Vehicles
SHORT RANGE (2007) TOTAL
PEAK HOUR TRAFFIC
30/45
+- 110/150
110/105
t r
O O O
C7 1
It to Go
M
Figure 7
13
Vine Drive
1 /3
SITE GENERATED
PEAK HOUR TRAFFIC
7/25
--w-- AM/PM
212
e-
10/6
N
Figure 6
12
Trip Assignment
Trip assignment is how the generated and distributed trips are
expected to be loaded on the street system. The assigned trips are the
resultant of the trip distribution process. Figure 6 shows the site
generated peak hour traffic assignment. Figure 7 shows the total (site
plus background) short range (2007) peak hour traffic at the key
intersections.
Signal Warrants
As a matter of policy, traffic signals are not installed at any
location unless warrants are met according to the Manual on Uniform
Traffic Control Devices. Based upon the short range (2007) peak hour
traffic forecasts, signal warrants will not be met for the existing stop
sign controlled intersections. The signal warrant analysis is provided
in Appendix D.
Operation Analysis and Geometry
Capacity analyses were performed at the Taft Hill/Vine and
Vine/Brairwood intersections. The operations analyses were conducted for
the short range analysis future, reflecting a year 2007 condition.
Using the traffic volumes shown in Figure 5 and the existing
geometrics, the key intersections operate in the short range (2007)
background traffic future as indicated in Table 3. Calculation forms
for these analyses are provided in Appendix E. The key intersections
will operate acceptably.
Using the traffic volumes shown in Figure 7 and the existing
geometrics, the key intersections operate in the short range (2007)
total traffic future as indicated in Table 4. Calculation forms for
these analyses are provided in Appendix F. The key intersections will
operate acceptably.
The short range (2007) geometry is shown in Figure 8, which
reflects the existing geometry at the key existing intersections. By
definition, arterial streets customarily have center left -turn lanes.
In this segment of Taft Hill Road, a center left -turn lane is not
practical at this time.
Interior Streets
Traffic volume forecasts on the interior streets within
Bellwether Farm were requested, since variances with regard to turn
radii may be needed. Figure 9 shows the daily volume forecasts at
various locations on the interior streets. These volumes indicate
that the interior streets are at the low end of the volume range for a
residential local street.
11
to
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—�—180/185 M N "'
Vine�5/15 Drive J
210/135 15/10
5/5 175190 --•—
�' u' 55/30
ca
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a
ca
m
F-
-�*-- AM/PM
Rounded to Nearest
5 Vehicles
SHORT RANGE (2007) BACKGROUND
PEAK HOUR TRAFFIC
30/45
--105/140
110/105
t r
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q1t i?sM 00
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Figure 5
10
10%
SITE
A
40%
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TRIP DISTRIBUTION Figure 4
I I ON* ME HI Mosomp
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SITE PLAN
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SCALE 1 " = 200'
Figure 3
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SCALE 1 " = 200'
Figure 3
8
III. PROPOSED DEVELOPMENT
The Bellwether Farm Development is a proposed residential
development, located at the south end of the existing Briarwood Road in
Fort Collins. Figure 3 shows a site plan of the Bellwether Farm
Development. The short range analysis (Year 2007) includes development
of the Bellwether Farm Development and an appropriate increase in
background traffic. Since this is an intermediate level transportation
impact study, a long range analysis is not required. The site plan
shows one access to the Bellwether Farm Development via a full -movement
access at Briarwood Drive. The site plan shows emergency only access to
Cherry Street west of Bellwether Farm.
Trip Generation
Trip generation is important in considering the impact of a
development such as this upon the existing and proposed street system.
Trip generation information contained in Trip Generation, 7th Edition,
ITE was used to estimate trips that would be generated by the
proposed/expected uses at this site. Table 2 shows the expected trip
generation on a daily and peak hour basis.
Trip Distribution
Directional distribution of the generated trips was determined for
Bellwether Farm Development based upon the distribution of the existing
traffic patterns and future trip productions for this type of land use.
Figure 4 shows the trip distributions used for the short range (2007)
analysis future. The trip distribution was discussed in the scoping
meeting.
Background Traffic Projections
Figure 5 shows the short range (2007) background traffic
projections. Background traffic projections for the short range future
horizon were obtained by reviewing the NFRRTP, reviewing traffic studies
for other developments, and reviewing historic count data for this area
of Fort Collins. The 2004 traffic counts were increased at the rate of
2 percent per year to the year 2007.
7
TABLE 1
Current Peak Hour Operation
Intersection
Movemetrt
Level of Seririce
.:
Ad1,
PU
EB LTI T/RT
B
B
Taft Hill Road/Vine Drive
. WB LTI T/RT
C
B
(stop sign)
NB LTIT/RT
C
C
SB LTI T/RT
C
B
OVERALL
C
C
Vine Drive darwood Road
WB LT
A
A
(stop sign)
NB LT/RT
A
A
6
Existing Operation
The key intersections were evaluated using techniques provided in
the 2000 Highway Capacity Manual. Using the peak hour traffic shown in
Figure 20 the peak hour operation is shown in Table 1. Calculation
forms are provided in Appendix C. A description of level of service for
signalized and unsignalized intersections from the 2000 Highway Capacity
Manual and a table showing the Fort Collins Motor Vehicle LOS Standards
(Intersections) are also provided in Appendix C. The key intersections
operate acceptably during both the morning and afternoon peak hours.
The Bellwether Farm Development site is in an area termed "low density
mixed use residential neighborhood." In low density mixed .use
residential corridors, acceptable operation at an arterial/collector
unsignalized intersection during the peak hours is defined as level of
service F. At collector/local unsignalized intersections, acceptable
operation is considered to be at level of service C for any approach
leg.
Pedestrian Facilities
The sidewalk system on Vine is sporadic. There are sidewalks
along Brairwood. This site is within 1320 feet of: Irish Elementary
School and adjacent residential uses.
Bicycle Facilities
There are bicycle facilities along Vine Drive and Taft Hill Road.
Between Vine Drive and La Porte Avenue, Taft Hill Road is a designated
bike route. Vine Drive is a street with proposed bike lanes.
Transit Facilities
This area is currently served by transit service route 9, which
is on Vine Drive to the north. Route 9 travels west on Vine Drive and
back east on La Porte Avenue.
0
Vine Drive
199/127 --►
1 /3
--171/176
1/12
to
c
_M Lo
N
ti N
4 Nl 4P
r 14/9
N L166/86 —+►
53/30
�— AM/PM
RECENT PEAK HOUR TRAFFIC
'O
O
O
2
4=
IT
30/42
—100/133
105/97
CD 4" CMG
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Figure 2
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Vine Drive
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Bellwether
Farm
Laporte Avenue
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SITE LOCATION Figure 1
II. EXISTING CONDITIONS
The location of the Bellwether Farm Development is shown in Figure
1. It is important that a thorough understanding of the existing
conditions be presented.
Land Use
Land uses in the area are primarily residential and open space.
The center of Fort Collins lies to the southeast of the Bellwether Farm
Development.
Streets
The primary streets near the Bellwether Farm Development site are
Taft Hill Road, Vine Drive, and Briarwood Road. Taft Hill Road is east
of the Bellwether Farm Development. It is an north -south street
designated as a four -lane arterial street south of Vine Drive and a
minor two-lane arterial north of Vine Drive on the Fort Collins Master
Street Plan. Currently, it has a two-lane cross section. The Taft
Hill/Vine intersection has four-way stop sign control. At Vine Drive,
Taft Hill Road has all movements combined in a single lane. The posted
speed on this section of Taft Hill Road is 30 mph.
Vine Drive is north of the Bellwether Farm Development. It is an
east -west street and has a two-lane cross section. It is designated as
a minor two-lane arterial street on the Fort Collins Master Street Plan.
The Taft Hill/Vine intersection has four-way stop sign control. At Taft
Hill Road, Vine Drive has all movements combined in a single lane. The
Vine/Briarwood intersection has stop sign control on Briarwood. At
Briarwood, Vine has all movements combined in a single lane. The posted
speed on this section of Vine Drive is 30 mph. There is a school zone
on Vine Drive between Briarwood Road and Irish Drive. The school zone
speed is 20 mph.
Briarwood Road is the access to the Bellwether Farm Development.
It has a two-lane cross section and is designated as. a residential
street on the Fort Collins Master Street Plan. At the Vine/Briarwood
intersection, Briarwood Drive has all movements combined into a single
lane. Briarwood Drive has stop sign control at Vine Drive.
Existing Traffic
Recent peak hour traffic volumes at the key intersections are
shown in Figure 2. The traffic counts at the key intersections were
obtained in September 2004. Raw count data is provided in Appendix B.
1. 2
I. INTRODUCTION
This intermediate transportation impact study addresses' the
capacity, geometric, andcontrol requirements at and near the proposed
Bellwether Farm Development. The Bellwether Farm Development is located
south of Vine Drive on Briarwood Road in Fort Collins, Colorado.
During the course of the analysis, numerous contacts were made
with the project developer (Imago Enterprises), the project planner (VF
Ripley), and the Fort Collins Traffic Engineering Staff. The
Transportation Impact Study Base Assumptions form is provided in
Appendix A. This intermediate transportation impact study generally
conforms to the format set forth in the Fort Collins transportation
impact study guidelines as contained in the "Larimer County Urban Area
Street Standards" (LCUASS). The study involved the following steps:
- Collect physical, traffic, and development
- Perform trip generation, trip distribution,
- Determine peak hour traffic volumes;
- Conduct capacity and operational level of
intersections;
- Analyze signal warrants;
data;
and trip assignment;
service analyses on key
- Conduct level of service evaluation of pedestrian, bicycle, and
transit modes of transportation.
1
LIST OF FIGURES
.Fidrure
Page
1.
Site
Location ........................................
3
2.
Recent Peak Hour Traffic
...........................
4.
3.
Site
Plan ............................................
8
4.
Trip
Distribution ......................
5.
Short
Range (2007) Background Peak Hour Traffic ......
10
6.
Site
Generated Peak Hour Traffic
12
.....................
7.
Short
Range (2007) Total Peak Hour Traffic ...........
13
8.
Short
Range (2007) Geometry ...........................
15
9.
Daily
Traffic on Interior Streets ....................
16
APPENDIX
A Base Assumptions Form
B Recent Peak Hour Traffic
C Existing Peak Hour Operation/Level of Service Descriptions/Fort
Collins Motor Vehicle LOS Standards
D Peak Hour Signal Warrant Analysis
E Short Range Background Peak Hour Operation
F Short Range Total Peak Hour Operation
G Pedestrian/Bicycle/Transit Level of Service Worksheets
TABLE OF CONTENTS
Page
I. Introduction ......................................... 1
II. Existing Conditions .................................. 2
LandUse ............................................. 2
Streets.............................................. 2
Existing Traffic ........................ a............ 2
Existing Operation ................................... 5
Pedestrian Facilities ................................ 5
Bicycle Facilities ................................... 5
Transit Facilities ................................... 5
III. Proposed Development ................................. 7
Trip Generation ...................................... 7
Trip Distribution .................................... 7
Background Traffic Projections ....................... 7
TripAssignment ...................................... 11
Signal Warrants ...................................... 11
Operation Analysis and Geometry ...................... 11
Interior Streets ................................... 11
Pedestrian Level of Service .......................... 17
Bicycle Level of Service ............................. 17
Transit Level of Service ............................. 17
IV. Conclusions .......................................... 18
LIST OF TABLES
Table
Page
1. Current Peak Hour Operation .......................... 6
2. Trip Generation ...................................... 7
3. Short Range (2007) Background Peak Hour Operation .... 14
4. Short Range (2007) Total Peak Hour Operation ......... 14
BELLWETHER FARM DEVELOPMENT
TRANSPORTATION IMPACT STUDY
FORT COLLINS, COLORADO
DECEMBER 2004
Prepared for.
Imago Enterprises
140 Palmer Drive
Fort Collins, CO 80525
Prepared by:
MATTHEW J. DELICH, P.E.
2272 Glen Haven Drive
Loveland, CO 80538
Phone: 970-669-2061
FAX: 970-669-5034
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