HomeMy WebLinkAboutWHITHAM PROPERTY - ODP - 24-02B - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYIV. CONCLUSIONS
This study assessed the impacts of the Whitham Property ODP on the
long range (2023) street system in the vicinity of the proposed
development. As a result of this analysis, the following is concluded:
The development of the Whitham Property ODP is feasible from a
traffic engineering standpoint. At full development, the Whitham
Property ODP will generate approximately 10,300 daily trip ends,
807 morning peak hour trip ends, and 1087 afternoon peak hour
trip ends.
In the long range (2023) future, given development of the Whitham
Property. ODP and an increase in background traffic, all of the
key intersections are shown to operate acceptably with the
recommended geometry and control. Details regarding the
intersections related to the two overpasses should be addressed
with their designs.
Acceptable level of service is achieved for pedestrian, bicycle,
and transit modes based upon the measures in the multi -modal
transportation guidelines.
When specific development plans are submitted for all or a part
of the Whitham Property, a detailed transportation impact study
will be required.
17
within the Whitham Property development that will connect to the
future East Ridge development. This will provide neighborhood
' connectivity. When an actual PDP is proposed, the classification of
other internal streets will be discussed in the transportation impact
study.
Pedestrian Level of Service
' Appendix B shows a map of the area that is within 1320 feet of
the Whitham Property ODP. There will be three pedestrian destinations
within 1320 feet of the Whitham Property ODP. These are: 1) the
future residential area in the southeast quadrant of the
Timberline/Vine intersection (East Ridge), 2) the future residential
area to the south of theisite, and 3) the future residential parcel to
the north. This site is in an area type termed "other." Since this
is an MTIS and many of the streets will not exist for a number of
years, the "actual" level of service for each factor is not relevant.
' The level of service determination assumes that future residential
developments will build their streets and adjacent 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. If this does not occur or is not accepted by
the City, then acceptable pedestrian level of service cannot be
achieved. The Pedestrian LOS Worksheet is provided in Appendix B.
' The minimum level of service for "other" is C for all categories.
With the assumed future pedestrian facilities along future streets,
the pedestrian level of service will be acceptable. There are no
' schools within 1.5 miles of the Whitham Property ODP. It is expected
that all students within the Whitham Property ODP will be bused.
Bicycle Level of Service
' Appendix B shows a map of the area that is within 1320 feet of
the Whitham Property ODP. Based upon Fort Collins bicycle LOS
criteria, there are no bicycle destinations within 1320 feet of the
Whitham Property ODP. A bicycle LOS Worksheet is provided in Appendix
' B. The "actual" level of service for base connectivity is not
relevant since the streets do not exist.
' Transit Level of Service
This area of Fort Collins will be served by feeder transit
service according to the Fort Collins Transit Plan. The nearest
transit feeder route will be no closer than 2640 feet of the Whitham
t Property. Appendix B contains a future transit level of service
worksheet. Transit level of service will be in the B category.
16
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International
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' SH14 (Mulberry)
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' LONG RANGE 2023 GEOMETRY
' 15
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Figure 7
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1.0%/1.1%1.06%
Site Generated (AM/PM)
Total Traffic (AM/PM)
% Impact (AM/PM/Average)
3661488
H
507SM70
SH14 (Mulberry)
IMPACT OF SITE GENERATED
PEAK HOUR TRAFFIC
N
241/324
2435/2475
9.9%/13.1 %/11.5%
1191163 Vine
3225/3065
3.7%/5.3%/4.5%
303/408
3110/3390
r%/12.0%10.9%
International
263f354
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3SM4015
7.3%/8.8%/8.1 %
Figure 6
14
TABLE 2
Long Range (2023) Total Peak Hour Operation
13
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PEAK HOUR TRAFFIC
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Figure 5
12
Figure 5 shows the total (site plus background) long range (2023)
peak hour traffic at the key intersections with development of the
Whitham Property ODP.
Operation Analysis
Capacity analyses were performed at the key intersections. The
operations analyses were conducted for the long range analysis
reflecting a year 2023 condition with development of the Whitham
Property ODP.
Using the traffic volumes shown in Figure 5, the key
intersections operate in the long range (2023) total condition as
indicated in Table 2. Calculation forms for these analyses are
provided in Appendix A. The key intersections will operate acceptably
during the peak hours with the Lemay overpass configuration at the
Lemay/Vine intersection and the Timberline overpass configuration at
the Timberline/Vine intersection.
Development Impact
Figure 6 shows the impact of the site generated traffic on
various street segments in the area of the Whitham Property ODP. The
traffic impact of the Whitham Property at the Timberline/International
and Vine/Greenfields intersections will be just over 10 percent. The
impact at the other key intersections will be less than 10 percent.
Geometry
The long range (2023) approach geometry is shown in Figure 7.
The geometry at the key intersections in the long range future was
determined based upon achieving acceptable operation and meeting the
criteria in LCUASS. Specific lane lengths should be determined as
this development goes through the development review process. The
exact configurations of the intersections related to the Lemay Avenue
overpass and the Timberline Road overpass are not known at this time.
The configurations that were analyzed are similar to those shown in
other transportation impact studies in this area of Fort Collins.
Further analyses would be subject to their respective designs.
Internal Street Classification
Greenfields Court is/will be classified as a 2-lane arterial
street. It will carry traffic generated at this site, as well as some
pass through traffic generated by land uses to the north of Vine
Drive. International Boulevard will be extended east of Timberline
Road in the future and will intersect with Greenfields Court. It will
be classified as a 2-lane arterial. There will be a collector street
11
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138/87
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20/70 _
International
AM/PM
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90/
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4629
'
SH14 (Mulberry) 31/104
311105
� m
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SITE GENERATED
PEAK HOUR TRAFFIC
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Figure 4
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SH14 (Mulberry)
TRIP DISTRIBUTION
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Figure 3
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TABLE 1
TripGeneration
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A
210
Single Family
249 D.U.
9.57
1 2380
10.191
47
10.56
1 139
10-651
162
10-367
990
Parcel B
210
Single Family
173 D.U.
1 9.57
1 1660
10.191
33
10.561
97
1 0.65
1 112
10.361
62
Parcel C
210
Single Family
348 D-U.
9.57
3330
0.19
66
10.561
195
1.0.651
226
10.36
1 125
Parcel D
210
Single Family
146 D.U.
1 9.57
1 1400
10.19
1 28
10.56
1 82
10-651
95
10.36
53
Parcel E
210
Single Family
160 D.U.
1 9.57
1 1530
0.19
1 30
0.56
1 90
0.65
1 104
0.36
1 58
Total
I
I ta.aoo
I
I 204
1 603
1
1 699
1
1 388
EAST VINE DRIVE
WPKMT-Or-WAYEXMTM M
W EACH ME SECrM LNE
20 M ROW DEDICATION
FOR ARIERM
3T ROW DEDICATION
FOR COLLECTOR
A
31.18 AC
ZONE L-WN
155 - 249 UNITS
o
21.69 AC
ZONE L-M-N
108 - 173 UNITS
BY
SLOUGH
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4152 AC
ZONE L-M-N
2171- 348 UNITS
\\ No
NEIGH CENTERE
3-5 AC•
CONCEPTU�'
LOCATION •
21.72 - 23.72 AC
ZONE L-WN
•
108 - 189 UNITS
18.29 AC
ZONE L-M-N
91 - 146 UNITS
TRANSrrS71
d2ROW DED�TION
FOR ARTERAL
2 LANE
SITE PLAN
SCALE 1"=4W
FLOOD ZONE
0.35 AC
411L
N
Figure 2
Coll
A
III. PROPOSED DEVELOPMENT
The Whitham Property ODP is a mixed -use development, located
south of Vine Drive and east of Timberline Road in Fort Collins.
Figure 2 shows a site plan of the Whitham Property ODP. The long
' range analysis (Year 2023) includes development of the Whitham
Property ODP and an appropriate increase in background traffic, due to
normal growth and other potential developments in the area.
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 contained in Trip Generation,
' 6th Edition, ITE was used to estimate trips that would be generated by
the proposed/expected uses at this site. Table 1 shows the expected
trip generation on a daily and peak hour basis. Table 1 does not show
' trip generation for the small neighborhood park and the neighborhood
center. These land uses will generate trips that will not impact the
key intersections analyzed in this MTIS. They will primarily be
internal or non -vehicular.
Trip Distribution
■ Directional distribution of the generated trips was determined for
the Whitham Property ODP based upon the location of trip productions for
' these types of land uses and engineering judgment. Future year data
was obtained from the NFRRTP and other traffic studies. Figure 3 shows
the trip distribution used for the Whitham Property ODP.
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 4 shows the
' site generated peak hour traffic assignment with full development of
the Whitham Property ODP.
Total Traffic
The street system in the long range (2023) future will include
the Lemay Avenue overpass and the Timberline Road overpass. This will
eliminate the Lemay/Vine and Timberline/Vine intersections and the
railroad conflicts at the Lemay/Vine and Timberline/Vine
intersections. While the designs of the two overpasses is not known,
the Lemay/Vine and Timberline/Vine intersections were analyzed as two
T-intersections with signal control. This is similar to the analyses
in other TIS's that involved these intersections.
Bicycle Facilities
' Bicycle lanes exist within the cross section of Lemay Avenue,
Timberline Road, and Vine Drive. Currently, there are no bicycle
facilities along the other area streets. However, when these roads
are built to arterial and collector standards, bicycle lanes will be
included in the respective cross sections.
' Transit Facilities
Transfort does not serve this area of Fort Collins. The closest
service is Route 14, which is approximately 2500 feet from the edge of
the Whitham Property ODP.
5
Vine Drive is north (adjacent) of the Whitham Property ODP site.
It is an east -west street designated as a four -lane arterial on the Fort
Collins Master Street Plan. Currently, it has a two-lane cross section
adjacent to the Whitham Property ODP site. At Lemay Avenue and
Timberline Road, Vine Drive has the eastbound and westbound approaches
in a single lane. The existing speed limit in this area is 45 mph.
State Highway 14 (Mulberry) is to the south of the Whitham
Property ODP site. It is classified as a six -lane arterial in this area
of Fort Collins. Currently, SH14 has a four -lane cross section in this
area. At Lemay Avenue, SH14 has eastbound and westbound left -turn
lanes, two travel lanes in each direction, and eastbound and westbound
right -turn lanes. The SH14/Lemay intersection has signal control. At
Timberline Road, SH14 has eastbound and westbound left -turn lanes, two
travel lanes in each direction, and eastbound and westbound right -turn
lanes. The SH14/Timberline intersection has signal control. The
existing speed limit in this area is 45 mph.
International Boulevard is south of the Whitham Property ODP
site. It is an east -west street designated as a collector street west
of Timberline Road. International Boulevard is not shown to extend to
' the east of Timberline Road on the Fort Collins Master Street Plan.
However, the East Mulberry Corridor Plan shows International Boulevard
as a two-lane arterial street east and west of Timberline Road.
Currently, International Boulevard has a two-lane cross section west
of Timberline Road. At Timberline Road, International Boulevard has
the eastbound left -turn and right -turn lanes.
' Greenfields Court is designated as a north/south 2-lane arterial.
It intersects with SH14. In the future, Greenfields Court will be
extended north, intersecting with Vine Drive. It will bisect the
Whitham Property.
' Existing Traffic and Operation
Since this is a MTIS, existing traffic counts are not necessary
at this time. Information contained in the "US287/SH14 Access
' Management Report," April 4, 2000 and traffic studies prepared for
nearby development proposals indicated that the key intersections
currently operate acceptably.
Pedestrian Facilities
' Currently, there are no pedestrian facilities along the area
streets. However, when these roads are built to arterial and
collector standards, sidewalks will be included in the respective
cross sections. Sidewalks will be incorporated within and adjacent to
the Whitham Property, when actual development occurs.
1 4
SCALE 1'=3000'
SITE LOCATION Figure 1
3
II. EXISTING CONDITIONS
The location of the Whitham Property ODP is shown in Figure 1. It
is important that a thorough understanding of the existing conditions be
presented. This area is considered to be in a low density mixed -use
residential area.
Land Use
Land uses in the area are primarily either vacant (agriculture),
industrial, or residential. There are various residential uses to the
west, south, and northeast of the site. Land adjacent to the site is
flat (<2$ grade) from a traffic operations perspective. Industrial uses
surrounding the Fort Collins Downtown Airpark are southwest of the site.
The center of Fort Collins lies to the southwest of the proposed Whitham
Property ODP.
Roads
' The primary streets near the Whitham Property ODP site are Lemay
Avenue, Timberline Road, Vine Drive, SH14 (Mulberry), and International
Boulevard.
Lemay Avenue (CR13) is to the west (approximately 2.5 miles) of
the Whitham Property ODP site. It is classified as a four -lane arterial
in this area of Fort Collins. Currently, Lemay Avenue has a two-lane
cross section north and south of Vine Drive, and Lemay Avenue has a
four -lane cross section north and south of SH14. At Vine Drive, Lemay
Avenue has the northbound and southbound approaches in a single lane.
' The Lemay/Vine intersection has signal control. At SH14, Lemay Avenue
has northbound and southbound left -turn lanes, two travel lanes in each
direction, and northbound and southbound right -turn lanes. The
' SH14/Lemay intersection has signal control. The existing speed limit in
this area is 35 mph.
Timberline Road (CR9E) is to the west of the Whitham Property ODP
' site. It is classified as a six -lane arterial south of Vine Drive and
classified as a four -lane arterial north of Vine Drive. Currently,
Timberline Road has a two-lane cross section north and south of Vine
' Drive, and Timberline Road has a four -lane cross section north and south
of SH14. At Vine Drive, Timberline Road has the northbound and
southbound approaches in a single lane. The Timberline/Vine
' intersection has all -way stop sign control. At International Boulevard,
Timberline Road has a northbound left -turn lane, one through lane in
each direction, and a southbound right -turn lane. The Timberline/
' International intersection has stop sign control on International
Boulevard. At SH14, Timberline Road has northbound and southbound left -
turn lanes, two travel lanes in each direction, and northbound and
southbound right -turn lanes. The SH14/Timberline intersection has
' signal control. The existing speed limit in this area is 45 mph.
1 2
I. INTRODUCTION
' This Master Transportation Impact Study (MTIS) addresses the
capacity, geometric, and control requirements at and near the proposed
Whitham Property ODP. The proposed Whitham Property ODE, is located
' south of vine Drive and east of Timberline Road in Fort Collins,
Colorado.
During the course of the analysis, numerous contacts were made
with the project planning consultant (BHA Design), the project
owner/developer, and the City of Fort Collins staff. This 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). A scoping discussion was
held with the Fort Collins Traffic Engineer. This MTIS would include
only a long range analysis, since overall development plan approval is
being sought. When specific preliminary development plans are submitted
for all or a part of this property, a detailed transportation impact
study will be required. 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;
- Conduct capacity and operational level of service analyses on key
intersections;
- Conduct level of service evaluation of pedestrian, bicycle, and
transit modes of transportation.
LIST OF FIGURES
Figure
Page
1.
Site
Location ........................................
3
2.
Site
Plan ............................................
7
3.
Trip
Distribution ....................................
9
4.
Site
Generated Peak Hour Traffic .....................
10
5.
Long
Range (2023) Total Peak Hour Traffic ............
12
6.
Impact of Site Generated Peak Hour Traffic ...........
14
7.
Long
Range (2023) Geometry ...........................
15
APPENDIX
A Long Range Total Traffic Operation
B Pedestrian/Bicycle/Transit Level of Service Worksheets
n
TABLE OF CONTENTS
Page
I. Introduction ......................................... 1
II. Existing Conditions .................................. 2
LandUse ............................................. 2
Roads................................................ 2
Existing Traffic and Operation ....................... 4
Pedestrian Facilities ................................ 4
Bicycle Facilities ................................... 5
Transit Facilities ................................... 5
III. Proposed Development ................................. 6
Trip Generation ...................................... 6
Trip Distribution .................................... 6
Trip Assignment ...................................... 6
Total Traffic ........................................ 6
Operation Analysis ................................... 11
Development Impact ................................... 11
Geometry............................................. 11
Internal Street Classification ....................... 11
Pedestrian Level of Service .......................... 16
Bicycle Level of Service ............................. 16
Transit Level of Service ............................. 16
Iv. Conclusions .......................................... 17
LIST OF TABLES
Table Page
1. Trip Generation ...................................... 8
2. Long Range (2023) Total Peak Hour Operation .......... 13
WHITHAM PROPERTY ODP
MASTER TRANSPORTATION IMPACT STUDY
FORT COLLINS, COLORADO
MAY 2003
Prepared for:
Whitham Farms LLC
0189 Arrowhead Bluff
Blue River Route
Silverthorne, CO 80498
Prepared by:
MATTHEW J. DELICH, P.E.
2272 Glen Haven Drive
Loveland, CO 80538
Phone: 970-669-2061
FAX: 970-669-5034
PPOp`s'REO jsT
Q �� ]�' N J.
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