HomeMy WebLinkAboutLINDEN PARK (KEATING PROP.) - PDP - 62-98B - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYJ
1 IV. CONCLUSIONS
This study assessed the impacts of the Keating Property on the short
range (2005) and long range (2020) transportation system in the vicinity
of the proposed development. As a result of this analysis, the following
is concluded:
' - The development of the Keating Property is feasible from a traffic
engineering standpoint. At full development of this facility,
approximately 1780 daily trip ends, 139 morning peak hour trip ends, and
188 afternoon peak hour trip ends will be generated at this development.
- With the current peak hour traffic, all key intersections operate
acceptably. There are no pedestrian, bicycle, or transit facilities
adjacent to this site. There is very little pedestrian or bicycle activity
at the existing intersections near this site.
- Using the short range background traffic volumes, overall
operation will be acceptable at all key intersections, except for the
Timberline/Trilby intersection with stop sign control. With either a two
step left turn or signalization, this intersection will operate acceptably.
Using the long range background peak hour traffic, all
intersections will operate acceptably.
- In the short range future (year 2005 with full site development),
operation will be acceptable, with two step left turns at the key
intersections. The recommended short range geometry is shown in Figure 11.
- In the long range future (year 2020), all key intersections will
operate acceptably, except for the eastbound minor street left turns during
the afternoon peak hours. The long range geometry is shown in Figure 12.
- Acceptable level of service is achieved for pedestrian, bicycle,
and transit modes based upon Fort Collins measures in the multi -modal
transportation guidelines.
21
Trilby
LONG RANGE GEOMETRY
Chandler
A&
N
Figure 12
20
Trilby
SHORT RANGE GEOMETRY
Chandler
A
N
Figure 11
WE
Geometric Analysis
' The geometry at the various intersections was analyzed using the
short range traffic forecasts. The recommended short range geometry is
shown in Figure 11.
' Figure 12 shows the long range geometry at the various intersections.
This geometry should be evaluated periodically, based upon future, albeit
unknown, land development proposals in this area. It is expected that all
streets will have appropriate bike lanes and sidewalks, per Fort Collins
Design Standards.
' Pedestrian Level of Service
Appendix G shows a map of the area that is within 1320 feet of this
site. There will be one pedestrian destination within a quarter mile of
the Keating Property. This is a future 3.1 acre commercial development in
the northeast corner of the Timberline/Trilby intersection.
' This site is in an area type termed "other." The level of service
determination assumes that future developments will build their streets in
accordance with Fort Collins Standards. This being the case, pedestrian
facilities will exist where they currently do not. This is a reasonable
' assumption. It is also expected that pedestrian facilities will be
incorporated in the street cross section based upon Fort Collins Standards.
The Pedestrian LOS Worksheet is provided in Appendix H. The minimum level
of service for "other" is C for all measured categories.
Bicycle Level of Service
Based upon Fort Collins bicycle LOS criteria, there are no
destination areas within 1320' of the Keating Property.
' Transit Level of Service
Currently, there is no transit service in the area. In the future,
transit service will be improved. It is anticipated that the level of
service will be in the D category with implementation of the City's Transit
Development Plan.
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TABLE 5
Short Range Total Peak Hour Operation
;MRTERSECTI
M�
Ez
Timberline/Trilby
(stop sign)
EB LT
F [D]
F [D]
EB T/RT
B [A]
[ 7
B [A]
EB APPROACH
F [D]
F [C]
WB LT
C ICI
E [C]
WB T/RT
A [A]
A [A]
WB APPROACH
B [A]
C [B]
NB LT
A
A
SB IT
A
A
Timberline/Chandler
EB LT
F [D]
F [D]
EB WRT
A [A]
B [A]
EB APPROACH
E [C]
F [C]
WB LT
E [C]
F [D]
WB T/LT
B [A]
B [A]
WB APPROACH
C [B]
D [C]
NB LT
A
A
SB LT
A
A
level of service w/ two-step left turn
TABLE 6
Long Range Total Peak Hour Operation
-4 k
Timberline/Trilby
(signal)
EB
C
C
WB
C
C
NB
C
C
SB
C
C
OVERALL
C
C
Timberline/Chandler
(stop sign)
EB LT
F [D],
F [F]
EB T/RT
B [A]
B [B]
EB APPROACH
F [C]
F [E]
WB LT
F [D]
F [D]
WB T/RT
B [A]
B [A]
WB APPROACH
E [C]
D [C]
NB LT
A
B
SB LT
B
A
level of service wl two-step left turn
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forms are provided in Appendix E. Overall, the key intersections will
operate acceptably, except for the eastbound minor street left turns during
' the morning and afternoon peak hours and the westbound minor street left
turns during the afternoon peak hour.
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Using the traffic volumes shown in Figure 9, the intersections
operate in the long range condition as indicated in Table 6. Calculation
forms for these analyses are provided in Appendix F. All key intersections
are expected to operate acceptably, except for the eastbound minor street
left turns during the morning and afternoon peak hours.
TABLE 3
Short Range Background Peak Hour Operation
,i K ._y. } *-fit-
T 'x
-
Timberline/Trilby
(stop sign)
EB LT
F [D]
F [D]
EB T/RT
B [A]
B [B]
EB APPROACH
F [C]
F [C]
WB LT
C [C]
D [C]
WB T/RT
A [A]
A [A]
WB APPROACH
B [A]
C [B]
NB LT
A
A
SB LT
A
A
Timberline/Chandler
WB LT
D [C]
D [C]
WB RT
C
B
WB APPROACH
C [C]
C [B]
SB LT
A
A
[ ] - level of service w/ two-step left turn
TABLE 4
Long Range Background Peak Hour Operation
tz
Timberline/Trilby
(signal)
EB
C
C
WB
C
C
NB
C
C
SB
B
C
OVERALL
C
C
Timberline/Chandler
(stop sign)
WB LT
E [C]
E [C]
WB RT
B
B
WB APPROACH
D [C]
C [B]
SB LT
B
A
[ ] - level of service w/ two-step left turn
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' Trilby
LONG RANGE PEAK HOUR
AND DAILY LINK VOLUMES
AM/PM
Daily
H
Chandler
N
Figure 10
is
U-
o �n
o w
1 OOn5
�- M
50/35
70/45
NOM
4025
o
n
rn
0 0
CD IT
N Sp O
o
80/45
U) o
f- 40/30
J
55M
Trilby
280/ 80
1
0/
60/30 - y
0 0 0
IT o
O O N
V Ln
LONG RANGE TOTAL
PEAK HOUR TRAFFIC
AM/PM
Rounded to
Nearest 5 Vehicles
Chandler
46,
N
Figure 9
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traffic at the key intersections. Figure 9 shows the long range total peak
hour traffic at the key intersections.
Figure 10 shows the long range peak hour and daily traffic forecasts
on various street segments adjacent to the Keating Property. Traffic
forecasts on Timberline Road are expected to be at arterial street volumes.
Traffic forecasts on Trilby Road west of Timberline Road are expected to
be at minor arterial street volumes. The traffic forecasts will be at
connector level volumes for the short segment of Chandler Street, just west
of Timberline Road. A hundred feet or so west of Timberline Road, Chandler
Street splits into three separate streets. Each of these streets will
carry less than the upper threshold of a residential local street.
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. Using the traffic volumes shown in Figures 5 and 8, it
is likely that signal warrants will be met at the Timberline/Trilby
intersection. Signals are not expected to be warranted at the
Timberline/Chandler intersection in either the short range or long range
futures. Key intersections should be monitored with regard to when traffic
signal warrants would be met. Peak hour signal warrant analyses are
provided in Appendix B.
Signal Progression
Signal progression analyses were not conducted, since the
Timberline/Trilby intersection is an appropriate arterial/arterial
intersection, which is expected to be signalized. if intermediate signals
are required due to unforeseen circumstances, signal progression should be
conducted at that time.
1 Operations Analysis
Capacity analyses were performed on key intersections adjacent to and
near the Keating Property. The analyses correspond with the traffic
forecasts shown in Figures 5, 6, 8, and 9.
Using the background traffic volumes shown in Figure 5, the key
intersections operate in the short range condition as indicated -in Table
3. Calculation forms for these analyses are provided in Appendix C.
Overall, the key intersections will operate acceptably, except for the
Timberline/Trilby intersection with stop sign control. With signalization,
this intersection will operate acceptably.
Using the traffic volumes shown in Figure 6, the key intersections
operate in the long range future as indicated in Table 4. Calculation
forms are provided in Appendix D. The key intersections are expected to
operate acceptably. The Timberline/Trilby intersection was analyzed with
1 traffic signals.
Using the traffic volumes shown in Figure 8, the key intersections
operate in the short range condition as indicated in Table 5. Calculation
13
Trilby
SHORT RANGE TOTAL
PEAK HOUR TRAFFIC
1801125 --7 1
� I F
10/30 0 0 0
3520 N O
N W
N
7
AM/PM
Rounded to
Nearest 5 Vehicles
Chandler
N
Figure 8
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1
1
1
1
1
1
1
1
Trilby
AWPM
SITE GENERATED PEAK HOUR TRAFFIC
11
Chandler
N
Figure 7
i
1
1
t
1
1
1
1
1
1
1
1
1
1
1
1
Trilby
AM/PM
Rounded to
Nearest 5 Vehicles
LONG RANGE BACKGROUND
PEAK HOUR TRAFFIC
10
Chandler
A&
N
Figure 6
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
r
Trilby
AM/PM
Rounded to
Nearest 5 Vehicles
SHORT RANGE BACKGROUND
PEAK HOUR TRAFFIC
9
Chandler
N
Figure 5
1
1
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1
1
1
1
1
1
1
1
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1
I Site I
1 o%
rdiby
TRIP DISTRIBUTION
n
9-
Figure 4
Z Barrington PUD
± a] LE L D
' ---- --- Timberline
�— Keating Property
1
SITE PLAN Figure 3
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III. PROPOSED DEVELOPMENT
The Keating Property is a proposed residential development. It is
located between Trilby Road and CR36 along Timberline in Fort Collins.
Figure 3 shows the site plan with 186 lots. This site is assumed to be
developed over a 4-5 year period. For analysis purposes, it was assumed
to be fully built and occupied by the year 2005.
Trip Generation
Trip generation is important in considering the impact of a
development such as this upon the existing and proposed street system. A
compilation of trip generation information, prepared by the Institute of
Transportation Engineers (Trip Generation, 6th Edition), was used to
project trips that would be generated by the proposed uses at this site.
Table 2 shows the trip generation at full development of the Keating
Property. Land use code 210 (Single Family Detached) was used for the
site. This proposal will generate 1780 daily trip ends, 139 morning peak
hour trip ends, and 188 afternoon peak hour trip ends.
TABLE 2
Trip Generation
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V
eFp`ij�Frx* y^ ' 1pr� f�
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t�Y9
�y�
p�w'+�
M�F
/yYy
Wr�+
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r�
210
Single Family
186DU
9.57 1780
0.19
35
0.56
104
0.65
121 .036 67
TOTAL
1780
35
104
121 67
Trip Distribution
The directional distribution of the generated trips was determined
for the Keating Property. The distribution was determined based upon
engineering judgment knowing where present and future residential trip
attractions will be. The trip distribution is shown in Figure 4.
Background Traffic
Background traffic is defined as the traffic that is and/or will be
on the area streets that is not related to the proposed development. Short
range background traffic was developed by adding traffic generated from
known, approved developments in the area to the existing peak hour traffic.
This is shown in Figure 5. Long range background traffic was developed
using cited traffic studies and forecasts reflected in the "North Front
Range Regional Transportation Plan." Long range background traffic is
shown in Figure 6.
Trip Assignment
1 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 7 shows the peak hour
site generated traffic. Figure 8 shows the short range total peak hour
6
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Pedestrian Facilities
There are no pedestrian facilities along either Trilby Road or
Timberline Road adjacent to or near this site. This site is not within
1320 feet of existing residential areas, except for Paragon Point. Paragon
Point residential area is west of the Keating Property, across the railroad
tracks. Pedestrian activity at the key intersection was observed and found
to be non-existent. Sidewalks are/will be incorporated to this and other
developments that are within the city limits of Fort Collins.
Bicycle Facilities
Bicycle facilities along Timberline Road and Trilby Road are not well
defined. The occasional bicycle activity was judged to be recreational
(exercising) rather than commuter trips.
tTransit Facilities
Transfort currently does not serve this area of Fort Collins.
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P
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1
Trilby
144/83
30/15
cD co
N 04
N
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AM/PM
RECENT PEAK HOUR TRAFFIC
4
N
Figure 2
1) Harmony Road ' v
lip
(r County Road 36
y / CDm
a
a 0
E o
r � U
\ 1
C
KEATING o
PROPERTY 1
`r 1
Trilby Road
Fossil Creek
i Reservoir
3
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SITE LOCATION
Figure 1
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II. EXISTING CONDITIONS
The location of the Keating Property 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 vacant (agricultural) or
residential. Residential uses exist or are planned to the north and east
of the Keating Property. Land is essentially flat from a traffic
operations perspective. The center of Fort Collins lies to the north of
the Keating Property.
Roads
The primary streets near the Keating Property are Timberline Road
(CR11) and Trilby Road (CR34). Timberline Road is west of the site. It
is a north/south street designated as an arterial street on the Fort
Collins Master Street Plan. Within the study area, it currently has a
paved two lane cross section. Timberline Road intersects with Trilby Road
at a stop sign controlled intersection.
Trilby Road is designated as an east/west arterial street. At
Timberline Road, it has a two lane cross section. Currently, Trilby Road
terminates at Timberline Road.
Existing Motor Vehicle Traffic
Peak hour traffic flow at the key intersection is shown in Figure 2.
These counts were obtained in 1998. These traffic counts were taken from
the "Barrington PUD TIS."
Existing Motor Vehicle Operation
Table 1 shows the operation at the key intersection during the peak
hours. Calculation forms are provided in Appendix A. Overall, the key
intersection operates acceptably.
TABLE 1
Current Peak Hour Operation
IN
pgm
Timberline/Trilby
(stop sign)
EB LT/RT
C
C
NB LT
A
A
F
I. INTRODUCTION
This transportation impact study addresses the capacity, geometric,
and control requirements at and near the proposed Keating Property
residential development, located near them Timberline/Trilby intersection
in Fort Collins, Colorado. This transportation study addresses the overall
development plan (ODP) issues at full development of the site in the short
range analysis future (year 2005) condition and the long range future (year
2020) condition. The short range analysis may satisfy the Transportation
Impact Analysis for the project development plan (PDP) submittal
requirements, depending upon the specific PDP proposal.
During the course of the analysis, numerous contacts were made with
the project planning consultants (VF Ripley). This study generally
conforms to the format set forth in the Fort Collins Transportation Impact
Study Guidelines. The study involved the following steps:
Collect physical, traffic, and development data;
Perform trip generation, trip distribution, and trip assignment;
- Determine peak hour traffic volumes and daily traffic volumes;
Conduct capacity and operational level of service analyses for all
pertinent modes of transportation;
- Analyze signal warrants;
- Analyze signal progression.
This report is prepared for the following purposes:
= Evaluate the existing conditions;
Estimate the trip generation by the proposed/assumed developments;
Determine the trip distribution of site generated traffic;
- Evaluate level of service for all transportation modes;
- Determine the geometrics at key intersections;
- Determine the impacts of site generated traffic at key intersections.
Information used in this report was obtained from the City of Fort
Collins, the planning and engineering consultants, the developers, research
sources (ITE, TRB, etc.), and field reconnaissance. The following traffic
study was reviewed and considered in preparing this study:
- Barrington PUD TIS," September 1998
The key intersections included in this traffic study are
Timberline/Trilby and Timberline/Chandler intersections.
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LIST OF FIGURES
Figure
Page
1.
Site
Location ........................................
3
2.
Recent
Peak Hour Traffic .............................
4
3.
Site
Plan ............................................
7
4.
Trip
Distribution ....................................
8
5.
Short
Range Background Peak Hour Traffic .............
9
6.
Long
Range Background Peak Hour Traffic ..............
10
7.
Site
Generated Peak Hour Traffic .....................
11
8.
Short
Range Total Peak Hour Traffic ..................
12
9.
Long
Range Total Peak Hour Traffic ...................
14
10.
Long
Range Daily Traffic .............................
15
11.
Short
Range Geometry .................................
19
12.
Long Range Geometry ...................................
20
APPENDIX
A Current Peak Hour Operation
B Signal Warrant Analysis
C Short Range Background Traffic Operation
D Long Range Background Traffic Operation
E Short Range Total Traffic Operation
F Long Range Total Traffic Operation
G Pedestrian Level of Service Worksheets
1.
TABLE OF CONTENTS
Page
I. Introduction .........................................
1
II. Existing Conditions ..................................
2
LandUse .............................................
2
Roads.................................................
2
Existing Motor Vehicle Traffic .......................
Existing Motor Vehicle Operation
2
2
Pedestrian Facilities ................................
5
Bicycle Facilities ...................................
5
Transit Facilities ...................................
III. Proposed Development .................................
5
6
Trip Generation ......................................
Trip Distribution ....................................
6
6
Background Traffic ...................................
6
Trip Assignment ......................................
6
Signal Warrants ......................................
Signal Progression ...................................
13
13
Operations Analysis ..................................
13
Geometric Analysis ...................................
Pedestrian Level of Service ..........................
18
18
Bicycle Level of Service
18
Transit Level of Service .............................
18
IIV. Conclusions .......................................... 21
LIST OF TABLES
Table Page
1. Current Peak Hour Operation .......................... 2
2. Trip Generation ...................................... 6
3. Short Range Background Traffic Operation ............. 16
4. Long Range Background Traffic Operation .............. 16
5. Short Range Total Traffic Operation .................. 17
6. Long Range Total Traffic Operation ................... 17
LF
THE KEATING PROPERTY
TRAFFIC IMPACT STUDY
FORT COLLINS, COLORADO
MAY 1999
Prepared for:
Mike Sollenberger
P.O. Box 272469
Fort Collins, CO 80527-2469
Prepared by:
MATTHEW J. DELICH, P.E.
2272 Glen Haven Drive
Loveland, CO 80538
Phone: 970-669-2061
FAX: 970-669-5034