HomeMy WebLinkAboutWATERFIELD FOURTH FILING - MAJOR AMENDMENT / PDP - PDP180009 - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYWATERFIELD
TRANSPORTATION IMPACT STUDY
FORT COLLINS, COLORADO
JULY 2018
Prepared for:
TH Waterfield, LLC
Thrive Home Builders
1875 Lawrence Street, Suite 100
Denver, CO 80202
Prepared by:
DELICH ASSOCIATES
2272 Glen Haven Drive
Loveland, CO 80538
Phone: 970-669-2061
FAX: 970-669-5034
Project # 1839
DELICH Waterfield TIS, July 2018
ASSOCIATES
TABLE OF CONTENTS
I. INTRODUCTION ........................................................................................................ 1
II. EXISTING CONDITIONS .......................................................................................... 2
Land Use ......................................................................................................................... 2
Streets ............................................................................................................................. 2
Existing Traffic ................................................................................................................. 5
Existing Operation ........................................................................................................... 5
Pederstrian Facilities ....................................................................................................... 8
Bicycle Facilities .............................................................................................................. 8
Transit Facilities .............................................................................................................. 8
III. PROPOSED DEVELOPMENT ................................................................................. 9
Trip Generation ............................................................................................................... 9
Trip Distribution ............................................................................................................... 9
Background Traffic Projections ....................................................................................... 9
Trip Assignment ............................................................................................................ 14
Signal Warrants ............................................................................................................. 14
Operation Analysis ........................................................................................................ 20
Vine/Lemay Adequate Public Facilities ......................................................................... 25
Geometry ...................................................................................................................... 28
Pedestrian Level of Service ........................................................................................... 28
Bicycle Level of Service ................................................................................................ 28
Transit Level of Service ................................................................................................. 28
IV. CONCLUSIONS .................................................................................................... 31
LIST OF TABLES
1. Current Peak Hour Operation .................................................................................... 7
2. Trip Generation ....................................................................................................... 11
3. Short Range (2023) Background Peak Hour Operation .......................................... 21
4. Long Range (2040) Background Peak Hour Operation ........................................... 22
5. Short Range (2023) Total Peak Hour Operation ..................................................... 24
6. Long Range (2040) Total Peak Hour Operation ...................................................... 26
DELICH Waterfield TIS, July 2018
ASSOCIATES
LIST OF FIGURES
1. Site Location ............................................................................................................. 3
2. Existing Geometry ..................................................................................................... 4
3. Recent Peak Hour Traffic .......................................................................................... 6
4. Site Plan .................................................................................................................. 10
5. Trip Distribution ....................................................................................................... 12
6. Short Range (2023) Background Peak Hour Traffic ................................................ 13
7. Long Range (2040) Background Peak Hour Traffic ................................................. 15
8. Short Range (2023) Site Generated Peak Hour Traffic ........................................... 16
9. Long Range (2040) Site Generated Peak Hour Traffic ............................................ 17
10. Short Range (2023) Total Peak Hour Traffic ........................................................... 18
11. Long Range (2040) Total Peak Hour Traffic ............................................................ 19
12. Short Range (2023) Geometry ................................................................................ 29
13. Long Range (2040) Geometry ................................................................................. 30
APPENDICES
A. Base Assumptions Form
B. Peak Hour Traffic Counts
C. Current Peak Hour Operation/Level of Service Descriptions/Fort Collins Motor
Vehicle LOS Standards (Intersections)
D. Signal Warrants
E. Short Range (2023) Background Peak Hour Operation
F. Long Range (2040) Background Peak Hour Operation
G. Short Range (2023) Total Peak Hour Operation
H. Long Range (2040) Total Peak Hour Operation
I. Fort Collins Code pertaining to APF
J. Pedestrian/Bicycle Level of Service Worksheets
DELICH Waterfield TIS, July 2018
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I. INTRODUCTION
This transportation impact study (TIS) addresses the capacity, geometric, and
control requirements at and near the proposed Waterfield development. The proposed
Waterfield development is located in the north of Vine Drive and east of Timberline Road
in Fort Collins, Colorado.
During the course of the analysis, numerous contacts were made with the owner
(TH Waterfield, LLC), the project engineer (Northern Engineering), the project planner
(Ripley Design), and the City of Fort Collins Traffic Operations staff. The Transportation
Impact Study Base Assumptions form and related documents are provided in Appendix A.
This study generally conforms to the format set forth in the Fort Collins TIS Guidelines in
the “Larimer County Urban Area Street Standards” (LCUASS). Due to the trip generation,
this is a full transportation impact study. 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;
- Analyze signal warrants;
- Conduct level of service evaluation of pedestrian, bicycle, and transit modes of
transportation
This TIS is a revision of the “Waterfield Transportation Impact Study” dated
December 2013. It addresses City staff comments with regard to the number of dwelling
units, signalization of the Timberline/Vine intersection, and APF at the Lemay/Vine
intersection.
DELICH Waterfield TIS, July 2013
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II. EXISTING CONDITIONS
The location of the Waterfield 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, industrial, and agricultural/open.
There are residential uses to the southeast of the site. There are industrial uses to the
south of the site. There are agricultural/open uses to the west, east, and north of the
site. The proposed Waterfield site is currently vacant. The center of Fort Collins lies to
the southwest of the proposed Waterfield.
Streets
The primary streets near the Waterfield site are Timberline Road, Vine Drive,
Lemay Avenue, and Merganser Drive. Figure 2 shows a schematic of the existing
geometry at the Timberline/Vine, Vine/Merganser, and Lemay/Vine intersections.
Timberline Road is to the east of (adjacent to) the proposed Waterfield site. It is
a north-south street classified as a four-lane arterial according to the Fort Collins Master
Street Plan. Currently, Timberline Road has a two-lane cross section in this area. At
the Timberline/Vine intersection, Timberline Road has all movements combined into a
single lane. The Timberline/Vine intersection has all-way stop control. The posted
speed limit in this area of Timberline Road is 35 mph, south of Vine Drive, and 45 mph,
north of Vine Drive.
Vine Drive is to the south of (adjacent to) the proposed Waterfield site. It is an
east-west street classified as a two-lane collector according to the Fort Collins Master
Street plan. Currently, Vine Drive has a two-lane cross section. At the Timberline/Vine
intersection, Vine Drive has all movements combined into a single lane. At the
Vine/Merganser intersection, Vine Drive has all movements combined into a single lane.
At the Lemay/Vine intersection, Vine Drive has an eastbound and westbound left-turn
lane and a through/right-turn lane in each direction. The Vine/Merganser intersection
has stop sign control on Merganser Drive. The Lemay/Vine intersection has signal
control. The posted speed limit in this area of Vine Drive is 45 mph, east of Lemay
Avenue and 35 mph, approaching the Lemay/Vine intersection.
Merganser Drive is to the east of (adjacent to) the proposed Waterfield site. It is
a north-south street classified as a local according to the Fort Collins Master Street
plan. Merganser Drive only has a north leg at the Vine/Merganser intersection.
Currently, Merganser Drive has a two-lane cross section with parking on both sides of
the street. At the Vine/Merganser intersection, Merganser Drive has no striping.
However, it was observed to operate as a southbound left-turn lane and southbound
right-turn lane. The posted speed limit in this area on Merganser Drive is 25 mph.
BURLINGTON NORTHERN RAILROAD
SCALE: 1"=2000'
SITE LOCATION Figure 1
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Waterfield TIS, July 2018
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Vine Drive
Timberline Road
Mountain Vista
Mulberry Road
Lemay Avenue
EXISTING GEOMETRY Figure 2
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Waterfield TIS, July 2018
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Vine Drive
Timberline Road
Lemay Avenue
- Denotes Lane
Merganser Drive
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Lemay Avenue is to the west of the proposed Waterfield site. It is a north-south
street classified as a four-lane arterial according to the Fort Collins Master Street plan.
Currently, Lemay Avenue has a two-lane cross section. At the Lemay/Vine intersection,
Lemay Avenue has all movements combined into a single lane. The posted speed limit
in this area of Lemay Avenue is 35 mph, north of Vine Drive and 30 mph, south of Vine
Drive.
Existing Traffic
Recent morning and afternoon peak hour traffic volumes are shown in Figure 3.
The traffic counts at the Timberline/Vine, and Vine/Merganser intersections were
obtained in July 2018. The traffic counts at the Lemay/Vine intersection were obtained
in May 2016 by the City of Fort Collins. Raw traffic count data are provided in Appendix
B.
Existing Operation
The Timberline/Vine, Vine/Merganser, and Lemay/Vine intersections were
evaluated using techniques provided in the 2010 Highway Capacity Manual. Using the
morning and afternoon peak hour traffic shown in Figure 3, the peak hour operation is
shown in Table 1. The Vine/Merganser intersection meets the City of Fort Collins Motor
Vehicle LOS standard during the morning and afternoon peak hours. The
Timberline/Vine and Lemay/Vine intersections do not meet the City of Fort Collins Motor
Vehicle LOS standard during the afternoon peak hour. At the Timberline/Vine
intersection, the calculated delay for the eastbound approach, northbound approach,
and overall was commensurate with level of service F. At the Lemay/Vine intersection,
the calculated delay for the westbound approach and eastbound through/right-turn lane
was commensurate with level of service F. Calculation forms are provided in Appendix
C. A description of level of service for signalized and unsignalized intersections from
the 2010 Highway Capacity Manual and a table showing the Fort Collins Motor Vehicle
LOS Standards (Intersections) are also provided in Appendix C. Acceptable overall
operation at signalized intersections during the peak hours is defined as level of service
D or better. At signalized intersections, acceptable operation of any leg and any
movement is level of service E. At arterial/arterial and collector/collector stop sign
controlled intersections, acceptable operation is considered to be at level of service E,
overall and level of service F, for any approach leg. At arterial/collector, arterial/local,
collector/local, and local/local stop sign controlled intersections; acceptable operation is
considered to be at level of service D, overall and level of service F, for any approach
leg.
RECENT PEAK HOUR TRAFFIC Figure 3
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Waterfield TIS, July 2018
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AM/PM
Vine Drive
5/2
3/4
4/6
306/330
1/14
200/376
39/53
311/751
39/74
41/26
594/520
46/72
9/40
111/202
68/73
89/142
184/159
63/40
76/121
90/194
37/81
42/56
246/157
9/14
25/48
92/217
89/111
7/9
181/161
104/65
Lemay Avenue
Merganser Drive
Timberline Road
DELICH Waterfield TIS, July 2018
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TABLE 1
Current Peak Hour Operation
Intersection Movement Level of Service
AM PM
Timberline/Vine
(stop sign)
EB LT/T/RT B F
WB LT/T/RT C D
NB LT/T/RT B F
SB LT/TRT C D
OVERALL C F
Vine/Merganser
(stop sign)
EB LT/T A A
SB LT B C
SB RT B B
SB APPROACH B B
OVERALL A A
Lemay/Vine
(signal)
EB LT D D
EB T/RT D F
EB APPROACH D E
WB LT D D
WB T/RT E F
WB APPROACH E F
NB LT/T/RT A B
SB LT/T/RT B B
OVERALL C D
DELICH Waterfield TIS, July 2018
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Pedestrian Facilities
There are sidewalks along Timberline Road and Vine Drive along the Bull Run
development. There are sidewalks along both sides of Merganser Drive. It is expected
that as properties in this area are developed or redeveloped, sidewalks will be installed
as part of the street infrastructure.
Bicycle Facilities
Bicycle lanes exist along Timberline Road, Vine Drive, and Lemay Avenue within
the study area.
Transit Facilities
Currently, this area of Fort Collins is served by Transfort Route 14. There is a
bus stop at the Timberline/Vine intersection.
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III. PROPOSED DEVELOPMENT
The Waterfield is a residential development with 499 dwelling units. There are
100 2-story townhomes, 89 3-story townhomes, 81 single family homes, 28 duplexes,
and 201 cottages. Figure 4 shows a site plan of the Waterfield development. The short
range analysis (Year 2023) includes full development of the Waterfield development site
and an appropriate increase in background traffic, due to normal growth, and other
approved/proposed developments in the area. The long range analysis (Year 2040)
includes full development of the Waterfield site and background traffic due to normal
growth and in general accordance with the Fort Collins Structure Plan. This
development will build the future Suniga Road from Timberline Road to the west edge of
the property. The long range future analysis year is considered to be 2040 and reflects
the future Suniga Road from North College Avenue through Timberline Road. The site
plan shows that the residential area north of Suniga Road will have access to Suniga
Road via Merganser Drive; a right-in/right-out to Suniga Road; and a right-in/right-out
access to Timberline Road. The residential area south of Suniga Road will have one
access to Vine Drive, one access to existing Merganser Drive, and two right-in/right-out
accesses to Suniga Road. In the short range (2023) future, the access to Timberline
Road is assumed to be full movement.
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, 10th Edition, ITE was used to estimate trips that would be
generated by the proposed Waterfield development. A trip is defined as a one-way vehicle
movement from origin to destination. Table 2 shows the daily and peak hour trip
generation for the Waterfield development. Full development of the Waterfield
development resulted in 4144 daily trip ends, 308 morning peak hour trip ends, and 402
afternoon peak hour trip ends.
Trip Distribution
Trip distribution for the Waterfield development was based on existing/future
travel patterns, land uses in the area, consideration of trip attractions/productions in the
area, and engineering judgment. Figure 5 shows the trip distribution for the short range
(2023) and long range (2040) analysis futures. The trip distribution was agreed to by
City of Fort Collins staff in the scoping discussions/emails.
Background Traffic Projections
Figure 6 shows the short range (2023) background peak hour traffic projections.
These forecasts assume that the current street network exists in this area. Background
traffic projections for the short range were obtained by reviewing the North Front Range
SITE PLAN Figure 4
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Merganser Drive
Vine Drive
Suniga Road
Timberline Road
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TABLE 2
Trip Generation
Code Use Size
AWDTE AM Peak Hour PM Peak Hour
Rate Trips Rate In Rate Out Rate In Rate Out
North of Suniga
220 2-Story Townhome 67 D.U. 7.32 490 0.11 7 0.35 23 0.35 23 0.21 14
221 3-Story Townhome 40 D.U. 5.44 218 0.09 4 0.27 11 0.27 11 0.17 7
210 Single Family/
Duplex/Cottages 205 D.U. 9.44 1936 0.19 39 0.55 113 0.62 127 0.37 76
North of Suniga Subtotal 2644 50 147 161 97
South of Suniga
220 2-Story Townhome 33 D.U. 7.32 242 0.11 4 0.35 12 0.35 12 0.21 7
221 3-Story Townhome 49 D.U. 5.44 266 0.09 4 0.27 13 0.27 13 0.17 8
210 Single Family/
Duplex/Cottage 105 D.U. 9.44 992 0.19 20 0.55 58 0.62 65 0.37 39
South of Suniga Subtotal 1500 28 83 90 54
Total 4144 78 230 251 151
TRIP DISTRIBUTION Figure 5
DELICH
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Waterfield TIS, July 2018
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Timberline Road
Vine Drive
10%
40%
40% 10%
SHORT RANGE (2023) BACKGROUND
PEAK HOUR TRAFFIC Figure 6
DELICH
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Waterfield TIS, July 2018
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AM/PM
Merganser Drive
Timberline Road
5/2
3/4
4/6
462/452
1/14
255/564
206/209
130/249
70/126
50/65
299/213
10/17
30/57
104/247
130/258
10/10
208/181
146/111
Lemay Avenue
51/90
359/886
70/188
49/33
704/613
62/112
15/52
145/295
106/94
126/174
268/218
154/92
Vine Drive
DELICH Waterfield TIS, July 2018
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Regional Transportation Plan, engineering judgment, and various traffic studies
prepared for this area of Fort Collins. Based upon these sources, it was determined
that the traffic volumes would increase by approximately 2.0 percent per year. The
Trailhead (Tracts F & G), East Ridge, Water’s Edge (Phase 1), Retreat at Fort Collins,
and Northfield (Phase1) were included in the short range volumes. Retreat at Fort
Collins and Northfield developments are in the planning stage and not approved
projects. The Lemay/Vine intersection was increased by adding traffic from approved
projects in the area that have yet to be built or built out. This data was provided by Fort
Collins City staff. It is noted that the background traffic at the Lemay/Vine intersection
has the peak hour traffic from 191 single family dwelling units (in Waterfield) that were
approved in 2013. Figure 7 shows the long range (2040) background peak hour traffic
projections. The long range (2040) future reflects completion of Suniga Road, as shown
in the Fort Collins Master Street Plan.
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. Figures 8 and 9 show the respective short range (223) and long range (2040)
site generated peak hour traffic. In Figure 8, the assigned traffic at the various site access
intersections reflect full development of Waterfield. However, the site traffic assignment at
the Lemay/Vine intersection reflects the full development of Waterfield minus the
Waterfield approved traffic as noted above. Figure 10 shows the short range (2023) total
(site plus background) peak hour traffic forecast. Figure 11 shows the long range (2040)
total (site plus background) peak hour traffic forecast.
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. For the roads in the
vicinity of The Waterfield development, four hour and/or eight hour signal warrants are
applicable. These warrants require much data and are applied when the traffic is actually
on the area road system. It is acknowledged that peak hour signal warrants should not be
applied, but since the peak hour forecasts are readily available in a traffic impact study, it
is reasonable to use them to get an idea whether other signal warrants may be met. If
peak hour signal warrants will not be met at a given intersection, it is reasonable to
conclude that it is not likely that other signal warrants would be met. If peak hour signal
warrants are met, it merely indicates that further evaluation should occur in the future as
the development occurs. However, a judgment can be made that some intersections will
likely meet other signal warrants. The Lemay/Vine intersection is currently signalized.
Using the short range (2023) total peak hour traffic (Figure 10), the peak hour
signal warrant will be met in the morning and afternoon peak hours at the Timberline/Vine
intersection. It is likely that other signal warrants will be met in the short range (2023)
LONG RANGE (2040) BACKGROUND
PEAK HOUR TRAFFIC Figure 7
DELICH
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Waterfield TIS, July 2018
Page 15
Merganser Drive
5/5
0/0
0/0
45/65
5/10
45/55
215/220
200/435
75/140
135/120
430/245
70/105
95/175
105/305
170/175
95/70
255/195
170/145
Suniga Road
Vine Drive
Timberline Road
155/205
540/960
30/155
90/95
960/730
85/135
35/70
260/385
155/145
135/190
280/285
160/80
370/655
5/10
605/535
10/10
5/5
5/5
Lemay Avenue
AM/PM
Rounded to Nearest
5 Vehicles
SHORT RANGE (2023) SITE
GENERATED PEAK HOUR TRAFFIC Figure 8
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AM/PM
Merganser Drive
55/36
13/9
4/14
19/35
19/59
30/27
11/38
20/58
3/9
52/36
8/5
36/23
Suniga Road
Vine Drive
10/32 Timberline Road
21/69
10/8
63/41
15/10
5/11
9/5
29/20
5/16
3/9
Lemay Avenue
7/22
3/7
6/20
6/3
19/13
21/15
Site Accesses
28/19
27/17
10/29
64/42
9/31
22/69
Site Access
3/10
9/6
Site Access
18/57
10/6
4/14
4/11
12/8
51/34
18/58
5/3
43/29
30/19
LONG RANGE (2040) SITE
GENERATED PEAK HOUR TRAFFIC Figure 9
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Waterfield TIS, July 2018
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AM/PM
Merganser Drive
Site Access
5/3
NOM
NOM
1/5
11/6
NOM
NOM
5/3
4/11
1/5
51/96
9/14
38/21
7/3
22/14
35/17
70/35
32/31
Suniga Road
22/14
4/11
4/11
50/27
Vine Drive
Site Access
Timberline Road
15/33
5/11
13/30
12/7
33/17
38/20
6/3
NOM
32/20
40/24
NOM
55/30
18/64
40/16
2/6
14/44
77/31
11/34
11/7
3/10
11/37
A
A
SHORT RANGE (2023) TOTAL
PEAK HOUR TRAFFIC Figure 10
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216/241
151/318
70/126
60/73
362/254
25/27
113/252
159/278
12/12
213/197
149/120
51/90
359/886
77/210
49/33
704/613
65/119
15/52
151/315
106/94
132/177
287/231
175/107
0/0
18/58
5/3
0/0
43/29
30/19
0/0
9/6
0/0
7/22
3/10
12/12
AM/PM
Merganser Drive
60/38
16/13
8/20
481/487
20/73
285/591
11/38
182/351
3/9
411/331
8/5
36/23
Suniga Road
Vine Drive
Timberline Road
Lemay Avenue
Site Accesses
LONG RANGE (2040) TOTAL
PEAK HOUR TRAFFIC Figure 11
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AM/PM
Merganser Drive
Site Access
10/10
0/0
0/0
10/10
5/15
5/10
135/170
200/435
75/140
145/135
470/265
75/110
115/190
120/165
130/145
95/70
145/135
110/90
Suniga Road
410/695
5/10
640/480
50/30
Vine Drive
Timberline Road
115/90
395/885
30/150
30/15
890/665
25/25
10/30
245/375
50/70
30/30
270/270
160/75
10/10
5/5
40/25
40/25
5/5
55/30
20/65
270/445
10/15
15/45
395/315
20/45
Site Access
10/5
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future. In discussions with City staff, a signal at the existing Timberline/Vine intersection is
expected in the short range future. Therefore, the Timberline/Vine intersection was
analyzed with and without signal control. Other key unsignalized intersections do not meet
signal spacing and will not be signalized. The peak hour signal warrant analyses are
provided in Appendix D.
Using the long range (2040) total peak hour traffic (Figure 11), the peak hour signal
warrant will likely be met in the morning and afternoon peak hours at the
Timberline/Suniga and Lemay/Suniga intersections. Based on the peak hour signal
warrant, it is likely that other volume based signal warrants would be met at the
Timberline/Suniga and the Lemay/Suniga intersections. Therefore, the Timberline/Suniga
and the Lemay/Suniga intersections were analyzed with signal control in the long range
(2040) future. Other key unsignalized intersections do not meet signal spacing and will not
be signalized. The peak hour signal warrant analyses are provided in Appendix D
Operation Analysis
In the short range (2023) future capacity analyses were performed at the
Timberline/Vine, Vine/Merganser, Lemay/Vine, Timberline/Suniga, Suniga/Merganser, and
the Site Access intersections. The Timberline/Vine intersection was analyzed with
existing stop sign control and with the City’s proposed improvements (signalization and
NB/SB left-turn lanes). In the long range (2040) future capacity analyses were performed
at the Vine/Merganser, Timberline/Suniga, Suniga/Merganser, Lemay/Suniga, and the Site
Access intersections. The operations analyses were conducted for the short range and
long range futures, reflecting year 2023 and 2040 conditions, respectively.
Using the traffic volumes shown in Figure 6, the Timberline/Vine, Vine/Merganser,
and Lemay/Vine intersections operate in the short range (2023) background traffic future
as indicated in Table 3. Calculation forms for these analyses are provided in Appendix E.
The key intersections will meet the City of Fort Collins Motor Vehicle LOS Standard during
the morning and afternoon peak hours with improvements at the Timberline/Vine
intersection, except for the Lemay/Vine intersection in the afternoon peak hour. At the
Lemay/Vine intersection, the calculated delay for the afternoon approaches and overall
was commensurate with level of service F.
Using the traffic volumes shown in Figure 7, the Timberline/Suniga, Suniga/
Merganser, Lemay/Suniga, and Vine/Merganser intersections operate in the long range
(2040) background traffic future as indicated in Table 4. Calculation forms for these
analyses are provided in Appendix F. The key intersections will meet the City of Fort
Collins Motor Vehicle LOS Standard during the morning and afternoon peak hours.
Using the traffic volumes shown in Figure 10, the Timberline/Vine, Vine/Merganser,
Vine/Site Access, Lemay/Vine, Timberline/Suniga, Timberline/Site Access,
Suniga/Merganser, and Suniga/Site Access A intersections operate in the short range
(2023) total traffic as indicated in Table 5. Calculation forms for these analyses are
DELICH Waterfield TIS, July 2018
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TABLE 3
Short Range (2022) Background Peak Hour Operation
Intersection Movement Level of Service
AM PM
Timberline/Vine
(stop sign)
EB LT/T/RT E F
WB LT/T/RT F F
NB LT/T/RT F F
SB LT/T/RT F F
OVERALL F F
Timberline/Vine
(signal)
EB LT/T/RT C C
WB LT/T/RT D D
NB LT B C
NB T/RT B C
NB APPROACH B C
SB LT B C
SB T/RT C D
SB APPROACH C D
OVERALL C C
Vine/Merganser
(stop sign)
EB LT/T A A
SB LT C C
SB RT B B
SB APPROACH B C
OVERALL A A
Lemay/Vine
(signal)
EB LT D D
EB T/RT D F
EB APPROACH D F
WB LT C D
WB T/RT E F
WB APPROACH D F
NB LT/T/RT B F
SB LT/T/RT C F
OVERALL C F
DELICH Waterfield TIS, July 2018
ASSOCIATES Page 22
TABLE 4
Long Range (2040) Background Peak Hour Operation
Intersection Movement Level of Service
AM PM
Timberline/Suniga
(signal)
EB LT C C
EB T D C
EB RT A C
EB APPROACH D C
WB LT C C
WB T D D
WB RT A A
WB APPROACH D D
NB LT A B
NB T B B
NB RT B B
NB APPROACH B B
SB LT B B
SB T B B
SB RT B B
SB APPROACH B B
OVERALL C C
Suniga/Merganser
(stop sign)
EB LT A A
WB LT A A
NB LT C C
NB T/RT B B
NB APPROACH B B
SB LT C C
SB T/RT B B
SB APPROACH C C
OVERALL B B
Continued on next page
DELICH Waterfield TIS, July 2018
ASSOCIATES Page 23
Continued from previous page
TABLE 4
Long Range (2040) Background Peak Hour Operation
Intersection Movement Level of Service
AM PM
Lemay/Suniga
(signal)
EB LT D D
EB T E D
EB RT A A
EB APPROACH E D
WB LT D D
WB T D D
WB RT D D
WB APPROACH D D
NB LT B A
NB T B B
NB RT A B
NB APPROACH B B
SB LT A B
SB T B B
SB RT B B
SB APPROACH B B
OVERALL C C
Vine/Merganser
(stop sign)
EB LT/T A A
SB LT A A
SB RT A A
SB APPROACH A A
OVERALL A A
DELICH Waterfield TIS, July 2018
ASSOCIATES Page 24
TABLE 5
Short Range (2022) Total Peak Hour Operation
Intersection Movement Level of Service
AM PM
Timberline/Vine
(stop sign)
EB LT/T/RT E F
WB LT/T/RT F F
NB LT/T/RT F F
SB LT/T/RT F F
OVERALL F F
Timberline/Vine
(signal)
EB LT/T/RT C C
WB LT/T/RT D D
NB LT B C
NB T/RT B C
NB APPROACH B C
SB LT B C
SB T/RT C D
SB APPROACH C D
OVERALL C C
Vine/Merganser
(stop sign)
EB LT/T A A
SB LT C C
SB RT B B
SB APPROACH B C
OVERALL A A
Vine/Site Access
(stop sign)
EB LT/T A A
SB LT C C
SB RT B B
SB APPROACH B C
OVERALL A A
Lemay/Vine
(signal)
EB LT D D
EB T/RT D F
EB APPROACH D F
WB LT C D
WB T/RT E F
WB APPROACH D F
NB LT/T/RT B F
SB LT/T/RT C F
OVERALL C F
Timberline/Vine
(stop sign)
EB LT/T/RT C D
WB LT/T/RT D C
NB LT/T/RT C F
SB LT/T/RT D C
DELICH Waterfield TIS, July 2018
ASSOCIATES Page 24
Vine/Merganser
(stop sign)
EB LT/T A A
SB LT B C
SB RT B B
OVERALL B B
Vine/Site Access
(stop sign)
EB LT/T A A
SB LT/RT B B
Timberline/Suniga
(stop sign)
EB LT B B
EB RT B A
EB APPROACH B B
NB LT/T A A
Suniga/Merganser
(stop sign)
EB LT A A
WB LT A A
NB LT A A
NB T/RT A A
NB APPROACH A A
SB LT A A
SB T/RT A A
SB APPROACH A A
Timberline/Site Access
(stop sign)
EB LT/RT B B
NB LT/T A A
Lemay/Vine
(signal)
EB LT D D
EB T/RT D F
EB APPROACH D F
WB LT C D
WB T/RT E F
WB APPROACH D F
NB LT/T/RT B F
SB LT/T/RT C F
OVERALL C F
DELICH Waterfield TIS, July 2018
ASSOCIATES Page 25
provided in Appendix G. The key intersections will meet the City of Fort Collins Motor
Vehicle LOS Standard during the morning and afternoon peak hours, except for the
Lemay/Vine intersection in the afternoon peak hour and the Timberline/Vine intersection
with stop sign control. At the Lemay/Vine intersection, the calculated delay for the
afternoon approaches was commensurate with level of service F. The Timberline/Vine
intersection meets the standard with signal control. Mitigation for the Lemay/Vine and
Timberline/Vine intersections level of service will be determined through discussion with
the City of Fort Collins.
Using the traffic volumes shown in Figure 11, the Vine/Merganser,
Timberline/Suniga, Suniga/Merganser, and Lemay/Suniga intersections operate in the
long range (2040) total traffic future as indicated in Table 6. Calculation forms for these
analyses are provided in Appendix H. The key intersections will meet the City of Fort
Collins Motor Vehicle LOS Standard during the morning and afternoon peak hours with a
signal at the Timberline/Suniga and Suniga/Lemay intersections.
Vine/Lemay Adequate Public Facilities
Proposed developments in Northeast Fort Collins are required to address the
operation at the Vine/Lemay intersection. This intersection has been an issue for
proposed developments in North Fort Collins that will contribute traffic through this
intersection. Due to existing site constraints, a short term improvement is not
probable/practical and a proposed long term solution of grade separation has not been
fully funded.
Language from the Fort Collins Code, pertaining to APF, is provided in Appendix I.
The transportation elements are contained in: 3.7.3(D)(1); 3.7.3(1)(a); and 3.7.3(F). In
3.7.3(D)(1) and 3.7.3(1)(a), an intersection overall level of service E must be achieved to
not cause an APF issue. In 3.7.3(F), an APF exception can be granted when the project
traffic, through the Vine/Lemay intersection, is less than 50 peak hour trips.
Using the traffic volumes shown in Figure 10, the overall level of service at the
Vine/Lemay intersection will be C and F, in the respective peak hours. The site generated
traffic shown in Figure 8, the site generated traffic passing through the Vine/Lemay
intersection is 62 and 80 vehicles, in the respective peak hours. The APF exception
element cannot be applied, since the traffic passing through the Vine/Lemay intersection is
greater than 50 vehicles in either peak hour.
The City of Fort Collins is considering revisions to the Fort Collins Code, pertaining
to APF. These changes, if approved, will allow larger developments to move forward by
proposing mitigation options based on the size/impact of the development. If the Code
revisions related to APF are not approved, the Waterfield development will need to
consider options related to this issue: 1) phase the development so that less than 50 peak
hour trips are generated through the Lemay/Vine intersection; 2) propose and install
DELICH Waterfield TIS, July 2018
ASSOCIATES Page 26
TABLE 6
Long Range (2040) Total Peak Hour Operation
Intersection Movement Level of Service
AM PM
Timberline/Suniga
(signal)
EB LT C C
EB T D C
EB RT A C
EB APPROACH D C
WB LT C C
WB T D D
WB RT A A
WB APPROACH D D
NB LT A B
NB T B B
NB RT B B
NB APPROACH B B
SB LT B B
SB T B B
SB RT B B
SB APPROACH B B
OVERALL C C
Suniga/Merganser
(stop sign)
EB LT A A
WB LT A A
NB LT C D
NB T/RT B B
NB APPROACH B C
SB LT C D
SB T/RT B C
SB APPROACH C C
Continued on next page
DELICH Waterfield TIS, July 2018
ASSOCIATES Page 27
Continued from previous page
TABLE 6
Long Range (2040) Total Peak Hour Operation
Intersection Movement Level of Service
AM PM
Suniga/Lemay
(signal)
EB LT D D
EB T D D
EB RT A A
EB APPROACH D D
WB LT D D
WB T D D
WB RT D D
WB APPROACH D D
NB LT B B
NB T B B
NB RT A B
NB APPROACH B B
SB LT A B
SB T B B
SB RT B B
SB APPROACH B B
OVERALL C C
Vine/Merganser
(stop sign)
EB LT/T A A
SB LT A A
SB RT A A
SB APPROACH A A
Vine/Site Access
(stop sign)
EB LT/T A A
SB LT/RT A A
Timberline/Site Access
(stop sign) EB RT B B
DELICH Waterfield TIS, July 2018
ASSOCIATES Page 28
improvements to the existing Lemay/Vine intersection; or 3) provided funds toward the
construction of grade separated improvements. It should be noted that phasing
developments to stay under the APF threshold has been the standard approach for other
large developments in the northeastern portion of Fort Collins.
Geometry
Figure 12 shows a schematic of the short range (2023) geometry. This is existing
geometry at the Timberline/Vine and Vine/Merganser intersections. At the
Timberline/Suniga and Timberline/Site Access intersections, left-turn lanes are required
based on arterial street standards.
Figure 13 shows a schematic of the long range (2040) geometry. This is based on
the Fort Collins Master Street Plan.
Pedestrian Level of Service
Appendix J shows a map of the area that is within 1320 feet of the Waterfield
development. There are two pedestrian destinations within 1320 feet of the Waterfield
development. These are: 1) the residential area to the southeast (Bull Run) and 2) the
residential area to the south of this site. The Waterfield site is located within an area
termed as “transit corridor,” which sets the level of service threshold at LOS B for
directness and security and LOS C for all other measured categories. Pedestrian level
of service is not achieved for pedestrian destination two with regard to continuity. The
Pedestrian LOS Worksheet is provided in Appendix J. Timberline Road does not have
a sidewalk. The practical limits of pedestrian improvements would be on the Waterfield
site itself.
Bicycle Level of Service
Appendix J shows a map of the area that is within 1320 feet of the Waterfield
development. There are no bicycle destinations within 1320 feet of the Waterfield
development. The Bicycle LOS Worksheet is provided in Appendix J. The minimum
level of service for this site is C. This site is connected to bike lanes on Vine Drive and
Timberline Road. Therefore, it is concluded that level of service A can be achieved
Transit Level of Service
This area of Fort Collins is served by Transfort Route 14. There is a bus stop at
the Timberline/Vine intersection.
SHORT RANGE (2023) GEOMETRY Figure 12
DELICH
ASSOCIATES
Waterfield TIS, July 2018
Page 29
Merganser Drive
Site Access
Suniga Road
Vine Drive
Site Access
Timberline Road
Site Access
- Denotes Lane
LONG RANGE (2040) GEOMETRY Figure 13
DELICH
ASSOCIATES
Waterfield TIS, July 2018
Page 30
Merganser Drive
Site Access
Suniga Road
Vine Drive
Timberline Road
Site Access
Site Access
- Denotes Lane
DELICH Waterfield TIS, July 2018
ASSOCIATES Page 31
IV. CONCLUSIONS
This study assessed the impacts of the Waterfield development on the street
system in the vicinity of the proposed development in the short range (2023) and long
range (2040) futures. As a result of this analysis, the following is concluded:
- The development of the Waterfield is feasible from a traffic engineering standpoint.
The trip generation of Waterfield development resulted in 4144 daily trip ends, 308
morning peak hour trip ends, and 402 afternoon peak hour trip ends.
- Current operation at the Timberline/Vine, Vine/Merganser, and Lemay/Vine
intersections meet the City of Fort Collins Motor Vehicle LOS standard during the
morning and afternoon peak hours with existing signal control, geometry, and
signal timing, except for the Lemay/Vine intersection in the afternoon peak hour.
At the Lemay/Vine intersection, the calculated delay for the westbound approach
and eastbound through/right-turn lane was commensurate with level of service F.
- The Lemay/Vine intersection is currently signalized. Using the short range (2023)
total peak hour traffic forecasts, the peak hour signal warrant will likely be met in the
morning and afternoon peak hours at the Timberline/Vine intersection. Other key
unsignalized intersections do not meet signal spacing and will not be signalized.
Using the long range (2040) total peak hour traffic forecasts, the peak hour signal
warrant will likely be met in the morning and afternoon peak hours at the
Timberline/Suniga and Lemay/Suniga intersections.
- In the short range (2023) future, given development of Waterfield and an increase
in background traffic, the Timberline/Vine, Vine/Merganser, Vine/Site Access,
Lemay/Vine, Timberline/Suniga, Timberline/Site Access, Suniga/Merganser, and
Suniga/Site Access A intersections will meet the City of Fort Collins Motor Vehicle
LOS Standard during the morning and afternoon peak hours, except for the
Lemay/Vine intersection in the afternoon peak hour and the Timberline/Vine
intersection with stop sign control. At the Lemay/Vine intersection, the calculated
delay for the afternoon approaches was commensurate with level of service F. The
Timberline/Vine intersection meets the standard with signal control. Mitigation for
the Lemay/Vine and Timberline/Vine intersections level of service will be
determined through discussion with the City of Fort Collins.
- In the long range (2040) future, given full development of Waterfield and an
increase in background traffic, the Vine/Merganser, Timberline/Suniga,
Suniga/Merganser, and Lemay/Suniga intersections will meet the City of Fort
Collins Motor Vehicle LOS Standard during the morning and afternoon peak hours
with a signal at the Timberline/Suniga and Suniga/Lemay intersections.
- The short range (2023) geometry is shown in Figure 12. The long range (2040)
geometry is shown in Figure 13.
DELICH Waterfield TIS, July 2018
ASSOCIATES Page 32
- This development does have an APF issue at the Vine/Lemay intersection. The
City of Fort Collins is considering revisions to the Fort Collins Code, pertaining to
APF. These changes, if approved, will allow larger developments to move forward
by proposing mitigation options based on the size/impact of the development. If the
Code revisions related to APF are not approved, the Retreat at Fort Collins will
need to consider options related to this issue: 1) phase the development so that
less than 50 peak hour trips are generated through the Lemay/Vine intersection; 2)
propose and install improvements to the existing Lemay/Vine intersection; or 3)
provided funds toward the construction of grade improvements. It should be noted
that phasing developments to stay under the APF threshold has been the standard
approach for other large developments in the northeastern portion of Fort Collins.
- Acceptable level of service is achieved for bicycle, and transit modes based upon
the measures in the multi-modal transportation guidelines and future improvements
to the street system in the area. Pedestrian level of service B is not achieved for all
pedestrian destinations with regard to continuity. There are properties that are
within the pedestrian influence area that do not have sidewalks. The practical
limits of pedestrian improvements would be on the Waterfield site itself.
0/0
0/0
20/20
5/10
10/25
Site Access
440/345
5/5
295/520
5/5
5/5
5/5
28/19
27/17
10/29
531/496
9/31
278/647
Site Access
3/10
9/6
Site Access
18/57
172/299
4/14
363/306
12/8
51/34
11/7
3/10
11/37
A
A
35/68
Site Access A
9/6
7/22
3/10
12/12
11/7
3/10
11/37
A
A
Site Access A