HomeMy WebLinkAboutTIMBERVINE - MAJOR AMENDMENT & REPLAT - MJA150001 - REPORTS - RECOMMENDATION/REPORT W/ATTACHMENTS (8)TIMBERVINE
TRANSPORTATION IMPACT STUDY
FORT COLLINS, COLORADO
JANUARY 2014
Prepared for:
Hartford Companies
1218 W. Ash Street
Suite A
Windsor, Co 80550
Prepared by:
DELICH ASSOCIATES
2272 Glen Haven Drive
Loveland, CO 80538
Phone: 970-669-2061
FAX: 970-669-5034
Project # 1383
DELICH TimberVine TIS, January 2014
ASSOCIATES
TABLE OF CONTENTS
I. INTRODUCTION ........................................................................................................ 1
II. EXISTING CONDITIONS .......................................................................................... 2
Land Use ......................................................................................................................... 2
Streets ............................................................................................................................. 2
Existing Traffic ................................................................................................................. 5
Existing Operation ........................................................................................................... 5
Pederstrian Facilities ....................................................................................................... 9
Bicycle Facilities .............................................................................................................. 9
Transit Facilities .............................................................................................................. 9
III. PROPOSED DEVELOPMENT ............................................................................... 10
Trip Generation ............................................................................................................. 10
Trip Distribution ............................................................................................................. 10
Background Traffic Projections ..................................................................................... 13
Trip Assignment ............................................................................................................ 13
Signal Warrants ............................................................................................................. 13
Operation Analysis ........................................................................................................ 20
Vine/Lemay Adequate Public Facilities ......................................................................... 24
Geometry ...................................................................................................................... 32
Pedestrian Level of Service ........................................................................................... 32
Bicycle Level of Service ................................................................................................ 32
Transit Level of Service ................................................................................................. 32
IV. CONCLUSIONS .................................................................................................... 35
LIST OF TABLES
1. Current Peak Hour Operation .................................................................................... 8
2. Trip Generation ....................................................................................................... 10
3. Short Range (2018) Background Peak Hour Operation .......................................... 21
4. Long Range (2035) Background Peak Hour Operation ........................................... 22
5. Short Range (2018) Total Peak Hour Operation ..................................................... 25
6. Long Range (2035) Total Peak Hour Operation ...................................................... 26
7. Short Range (2018) Base Condition Peak Hour Operation ..................................... 29
8. Short Range (2018) Base Condition Plus Site Traffic Peak Hour Operation ........... 29
DELICH TimberVine TIS, January 2014
ASSOCIATES
LIST OF FIGURES
1. Site Location ............................................................................................................. 3
2. Existing Geometry ..................................................................................................... 4
3. Recent Peak Hour Traffic .......................................................................................... 6
4. Adjusted/Balanced Recent Peak Hour Traffic ........................................................... 7
5. Site Plan .................................................................................................................. 11
6. Trip Distribution ....................................................................................................... 12
7. Short Range (2018) Background Peak Hour Traffic ................................................ 14
8. Long Range (2035) Background Peak Hour Traffic ................................................. 15
9. Short Range (2018) Site Generated Peak Hour Traffic ........................................... 16
10. Long Range (2035) Site Generated Peak Hour Traffic ............................................ 17
11. Short Range (2018) Total Peak Hour Traffic ........................................................... 18
12. Long Range (2035) Total Peak Hour Traffic ............................................................ 19
13. Lemay/Vine Base Condition Peak Hour Traffic ....................................................... 28
14. TimberVine Site Generated Peak Hour Traffic ........................................................ 30
15. Lemay/Vine Base Condition Plus Site Peak Hour Traffic ........................................ 31
16. Short Range (2018) Geometry ................................................................................ 33
17. Long Range (2035) Geometry ................................................................................. 34
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 (2018) Background Peak Hour Operation
F. Long Range (2035) Background Peak Hour Operation
G. Short Range (2018) Total Peak Hour Operation
H. Long Range (2035) Total Peak Hour Operation
I. Pedestrian/Bicycle Level of Service Worksheets
DELICH TimberVine TIS, January 2014
ASSOCIATES Page 1
I. INTRODUCTION
This transportation impact study (TIS) addresses the capacity, geometric, and
control requirements at and near the proposed TimberVine development. The proposed
TimberVine site is located north of International Boulevard and west of Timberline Road in
Fort Collins, Colorado. TimberVine is a residential development.
During the course of the analysis, numerous contacts were made with the owner
(Hartford Companies), the project planning consultant engineer (Russell + Mills Studios),
the project engineer consultant (Merrick), Fort Collins Traffic Engineering, and Fort Collins
Transportation Planning. 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
DELICH TimberVine TIS, January 2014
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II. EXISTING CONDITIONS
The location of the TimberVine 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 east and west of the site. The Burlington Northern
Railroad tracks are to the north of the site. There is open land to the south which is part
of a business park. The proposed TimberVine site is currently vacant. The center of
Fort Collins lies to the southwest of the proposed TimberVine site.
Streets
The primary streets near the TimberVine site are Timberline Road, Vine Drive,
International Boulevard, Mulberry Street, and Lincoln Avenue. Figure 2 shows a
schematic of the existing geometry at the Timberline/Vine, Timberline/International,
Timberline/Lincoln, and Timberline/Mulberry intersections. Timberline Road is to the
east of the proposed TimberVine 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, approximately 500 feet north of Lincoln Avenue and the
four-lane cross section, to the south in this area. At the Timberline/Vine intersection,
Timberline Road has all movements combined into a single lane. At the
Timberline/International intersection, Timberline Road has a northbound left-turn lane, a
through lane in each direction, and a southbound right-turn lane. At the
Timberline/Lincoln intersection, Timberline Road has a northbound and southbound left-
turn lane, two through lanes in each direction. At the Timberline/Mulberry intersection,
Timberline has northbound dual left-turn lanes, a southbound left-turn lane, two through
lanes in each direction, and a northbound and a southbound right-turn lane. The
Timberline/Vine intersection has all-way stop control. The Timberline/International and
Timberline/Lincoln have stop sign control on International and Lincoln, respectively.
The Timberline/Mulberry intersection has signal control. The posted speed limit in this
area of Timberline Road is 35 mph, north of International Boulevard, and 45 mph, south
of International Boulevard.
Vine Drive is to the north of the proposed TimberVine 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. The posted speed limit in
this area of Vine Drive is 45 mph.
BURLINGTON NORTHERN RAILROAD
SCALE: 1"=2000'
SITE LOCATION Figure 1
DELICH
ASSOCIATES
TimberVine TIS, January 2014
Page 3
Vine Drive
Timberline Road
Mountain Vista
Mulberry Street
Lemay Avenue
TimberVine
EXISTING GEOMETRY Figure 2
DELICH
ASSOCIATES
TimberVine TIS, January 2014
Page 4
International Boulevard
Lincoln Avenue
Mulberry Street
Vine Drive
Timberline Road
- Denotes Lane
DELICH TimberVine TIS, January 2014
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International Boulevard is to the south of the proposed TimberVine site. It is an
east-west street classified as a two-lane arterial according to the Fort Collins Master
Street plan. International Boulevard only has a west leg at the Timberline/International
intersection. Currently, International Boulevard has a two-lane cross section with a
center median. At the Timberline/International intersection, International Boulevard has
an eastbound left-turn lane and an eastbound right-turn lane. The posted speed limit in
this area on International Boulevard is 30 mph.
Lincoln Avenue is to the south of the proposed TimberVine site. It is an east-
west street classified as a two-lane arterial, west of Timberline Drive, and a two-lane
collector, east of Timberline Drive according to the Fort Collins Master Street plan.
Currently, Lincoln Avenue has a two-lane cross section. At the Timberline/Lincoln
intersection, Lincoln Avenue has an eastbound left-turn lane, an eastbound
through/right-turn lane, and westbound all movements are combined into a single lane.
The posted speed limit in this area of Lincoln Avenue is 35 mph.
Mulberry Street is to the south of the proposed TimberVine site. It is an east-
west street classified as a six-lane arterial according to the Fort Collins Master Street
plan. According to CDOT Mulberry Street is a NR-B west of Timberline Road and an E-
X, east of Timberline Road. Currently, Mulberry Street has a four-lane cross section. At
the Timberline/Mulberry intersection, Mulberry Street has an eastbound and westbound
left-turn lane, two through lanes in each direction and an eastbound and westbound
right-turn lane. The posted speed limit in this area of Mulberry Street is 55 mph.
Existing Traffic
Recent morning and afternoon peak hour traffic volumes are shown in Figure 3.
The traffic counts at the Timberline/Vine intersection were obtained in May 2013 while
school was in session. The traffic counts at the Timberline/Mulberry intersection were
obtained in February 2013 by the City of Fort Collins. The traffic counts at the
Timberline/International and Timberline/Lincoln intersections were obtained in October
2013. Raw traffic count data are provided in Appendix B. Since the counts were done
on different days, the counts were adjusted/balanced between the Timberline/Lincoln
and Timberline/Mulberry intersections. The adjusted/balanced recent peak hour traffic
is shown in Figure 4.
Existing Operation
The Timberline/Vine, Timberline/International, Timberline/Lincoln, and
Timberline/Mulberry intersections were evaluated using techniques provided in the 2010
Highway Capacity Manual. Using the morning and afternoon peak hour traffic shown in
Figure 4, the peak hour operation is shown in Table 1. Calculation forms are provided
in Appendix C. The key intersections are currently operating acceptably with existing
control and geometry in the morning and afternoon peak hours, except for the
RECENT PEAK HOUR TRAFFIC Figure 3
DELICH
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TimberVine TIS, January 2014
Page 6
149/154
328/353
92/160
138/89
365/337
125/232
46/76
623/1236
100/214
236/124
1206/1030
111/124
AM/PM
305/198
300/316
9/3
115/74
516/337
5/3
36/110
15/41
135/293
5/9
6/22
0/0
77/122
103/226
37/66
56/44
223/127
6/6
29/48
81/168
83/72
7/4
163/133
111/49
164/71
186/433
44/11
471/338
17/16
162/100
International Boulevard
Lincoln Avenue
Mulberry Street
Vine Drive
Timberline Road
ADJUSTED/BALANCED
RECENT PEAK HOUR TRAFFIC Figure 4
DELICH
ASSOCIATES
TimberVine TIS, January 2014
Page 7
149/154
327/341
92/160
141/87
372/330
127/227
46/74
623/1236
100/214
235/120
1206/1030
111/124
AM/PM
304/205
299/327
9/3
115/74
507/344
5/3
36/110
15/41
133/300
5/9
6/22
0/0
77/122
103/226
37/66
56/44
223/127
6/6
29/48
81/168
83/72
7/4
163/133
111/49
164/71
186/433
44/11
471/338
17/16
162/100
International Boulevard
Lincoln Avenue
Mulberry Street
Vine Drive
Timberline Road
DELICH TimberVine TIS, January 2014
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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 C
WB LT/T/RT C B
NB LT/T/RT B D
SB LT/T/RT C B
Timberline/International
(stop sign)
EB LT D C
EB RT C B
EB APPROACH C B
NB LT A A
Timberline/Lincoln
(stop sign)
EB LT F F
EB T/RT F F
EB APPROACH F F
WB LT/T/RT F D
NB LT B A
SB LT A A
Timberline/Mulberry
(signal)
EB LT D E
EB T C D
EB RT B C
EB APPROACH C D
WB LT D E
WB T C B
WB RT B A
WB APPROACH C C
NB LT D E
NB T D D
NB RT D D
NB APPROACH D D
SB LT D E
SB T/RT D D
SB APPROACH D D
OVERALL C D
DELICH TimberVine TIS, January 2014
ASSOCIATES Page 9
Timberline/Lincoln intersection. 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. This site is in an area termed “low density mixed use district” on the Fort
Collins Structure Plan. However, the existing key intersections are in an area termed
“all other areas” on the Fort Collins Structure Plan. In areas termed “all other areas,”
acceptable operation at signalized intersections during the peak hours is defined as
level of service D or better overall and level of service E for any leg or any movement.
At arterial/collector and arterial/local stop sign controlled intersections, acceptable
operation is considered to be at level of service E for any approach leg, which is
considered to be normal in an urban environment. At arterial/arterial and collector/local
stop sign controlled intersections, acceptable operation is considered to be at level of
service C for any approach leg. At the Timberline/Lincoln intersection, the calculated
delay for the morning peak hour eastbound and westbound approaches and afternoon
peak hour eastbound approach was commensurate with level of service F. This is
considered to be normal during the peak hours at stop sign controlled intersections along
arterial streets.
Pedestrian Facilities
There are sidewalks along the north side of International Boulevard and the east
side of Timberline Road, south of International Boulevard. It is expected that as
properties in this area are developed or redeveloped, sidewalks will be installed as part
of the street/property infrastructure.
Bicycle Facilities
Bicycle lanes exist along Timberline Road and Vine Drive, within the study area.
Transit Facilities
Currently, this area of Fort Collins is not served by Transfort. The closest route is
Route 14 with a stop at the Timberline/Donella intersection.
DELICH TimberVine TIS, January 2014
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III. PROPOSED DEVELOPMENT
The TimberVine is a residential development with 168 single family dwelling units.
Figure 5 shows a site plan of the TimberVine development. The short range analysis
(Year 2018) includes full development of the TimberVine site and an appropriate
increase in background traffic due to normal growth and other potential developments in
the area. The long range analysis year is considered to be 2035 and reflects the future
realigned Vine Drive from North College Avenue to the existing Vine Drive to the east.
The long range also reflects the future International Boulevard connection to Lincoln
Avenue. The site plan shows that TimberVine with have access to International
Boulevard and Mackinac Street.
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 for Single Family Home
(Code 210) in Trip Generation, 9th Edition, ITE was used to estimate the trips that would be
generated by the proposed TimberVine development in the short range (2018) future. A
trip is defined as a one-way vehicle movement from origin to destination. The calculated
trip generation is 1692 daily trip ends; 127 morning peak hour trip ends; and 168 afternoon
peak hour trip ends. Table 2 shows the expected trip generation on a daily and peak hour
basis.
TABLE 2
Trip Generation
Code Use Size
AWDTE AM Peak Hour PM Peak Hour
Rate Trips Rate In Rate Out Rate In Rate Out
210 Single-Family Detached 168 D.U. EQ. 1692 EQ. 32 EQ. 95 EQ. 106 EQ. 62
Trip Distribution
Trip distribution for the TimberVine was based on existing/future travel patterns,
land uses in the area, consideration of trip attractions/productions in the area, and
engineering judgment. Figure 6 shows the trip distribution for the short range (2018)
and long range (2035) analysis futures. The trip distribution was agreed to by City of
Fort Collins staff in the scoping meeting.
BURLINGTON NORTHERN RAILROAD
SCALE: 1"=2000'
TRIP DISTRIBUTION Figure 6
DELICH
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TimberVine TIS, January 2014
Page 12
Vine Drive
Timberline Road
Mountain Vista
Mulberry Street
Lemay Avenue
TimberVine
5%
10%
5%
20%
15%
35%
10%
DELICH TimberVine TIS, January 2014
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Background Traffic Projections
Figure 7 shows the short range (2018) background peak hour traffic projections.
Background traffic projections for the short range were obtained by reviewing the North
Front Range 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 1.5 percent per
year.
Figure 8 shows the long range (2035) background peak hour traffic projections.
This reflects completion of the future Vine Drive and International Boulevard, as shown
in the Fort Collins Master Street Plan. The Fort Collins Master Street Plan shows Vine
Drive as a four-lane arterial street. The traffic forecasts shown in Figure 8 do not
indicate the need for a four-lane arterial street by the year 2035. The four-lane arterial
street, shown on the Master Street Plan, is due to a potential interchange with I-25 at
Vine Drive or other significant development east of I-25. In discussions with various
Fort Collins staff, this interchange is not likely to occur by the year 2035, if at all.
Significant development, east of I-25, is not likely to occur by 2035.
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 9 and 10 show the respective short range (2018) and long range (2035)
site generated peak hour traffic assignment. Figures 11 and 12 show the respective short
range (2018) and long range (2035) total (site plus background) peak hour traffic
assignment.
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 TimberVine 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.
SHORT RANGE (2018)
BACKGROUND PEAK HOUR TRAFFIC Figure 7
DELICH
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TimberVine TIS, January 2014
Page 14
161/166
352/367
99/172
152/94
401/356
137/245
50/80
671/1332
108/231
253/129
1299/1110
120/134
AM/PM
327/221
322/352
10/3
124/80
546/371
5/3
39/119
16/44
143/323
5/10
6/24
0/0
80/129
111/243
40/71
57/47
240/137
6/6
32/54
88/190
90/82
8/4
167/141
120/53
164/71
200/466
44/11
507/364
17/16
162/100
International Boulevard
Lincoln Avenue
Mulberry Street
Vine Drive
Timberline Road
LONG RANGE (2035)
BACKGROUND PEAK HOUR TRAFFIC Figure 8
DELICH
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TimberVine TIS, November 2013
Page 15
210/215
460/485
130/225
185/140
525/465
185/320
75/140
875/1740
140/300
325/175
1700/1450
155/175
425/290
420/495
15/10
155/105
710/505
10/10
45/160
20/50
185/420
10/15
10/30
5/5
140/175
200/435
75/140
145/135
470/265
75/110
115/190
120/165
135/150
95/70
145/135
120/90
International Boulevard
Lincoln Avenue
Mulberry Street
New Vine Drive
Timberline Road
230/145
260/610
50/100
95/45
660/475
50/100
35/65
30/80
250/160
40/30
70/50
100/60
AM/PM
SHORT RANGE (2018) SITE
GENERATED PEAK HOUR TRAFFIC Figure 9
DELICH
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TimberVine TIS, January 2014
Page 16
5/16
33/22
14/9
19/13
11/37
6/21
AM/PM
22/74
10/6
66/44
3/11
5/3
9/6
5/3
3/11
2/5
2/5
25/85
7/21
19/12
76/50
International Boulevard
Lincoln Avenue
Mulberry Street
Vine Drive
Timberline Road
LONG RANGE (2035) SITE
GENERATED PEAK HOUR TRAFFIC Figure 10
DELICH
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TimberVine TIS, January 2014
Page 17
5/16
14/9
14/9
19/13
5/16
6/21
AM/PM
16/53
10/6
47/31
3/11
9/6
5/3
3/11
2/5
19/64
5/16
14/9
57/37
International Boulevard
Lincoln Avenue
Mulberry Street
Vine Drive
Timberline Road
SHORT RANGE (2018)
TOTAL PEAK HOUR TRAFFIC Figure 11
DELICH
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TimberVine TIS, January 2014
Page 18
161/166
357/383
99/172
185/116
415/365
156/258
61/117
671/1332
108/231
259/150
1299/1110
120/134
AM/PM
327/221
344/426
10/3
134/86
612/415
5/3
42/130
16/44
143/323
5/10
6/24
0/0
85/132
120/249
45/74
57/47
243/148
6/6
32/54
88/190
92/87
8/4
167/141
122/58
189/156
200/466
51/32
507/364
36/28
238/150
International Boulevard
Lincoln Avenue
Mulberry Street
Vine Drive
Timberline Road
LONG RANGE (2035)
TOTAL PEAK HOUR TRAFFIC Figure 12
DELICH
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TimberVine TIS, October 2013
Page 14
210/215
465/500
130/225
200/150
540/475
205/335
80/155
875/1740
140/300
330/195
1700/1450
155/175
425/290
435/550
15/10
165/110
755/535
10/10
50/170
20/50
185/420
10/15
10/30
5/5
140/175
210/440
80/145
145/135
475/275
75/110
115/190
120/165
135/150
95/70
145/135
125/95
International Boulevard
Lincoln Avenue
Mulberry Street
New Vine Drive
Timberline Road
250/210
260/610
50/100
100/60
660/475
50/100
50/75
30/80
310/195
40/30
70/50
100/60
AM/PM
DELICH TimberVine TIS, January 2014
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Using the short range (2018) total peak hour traffic (Figure 11), the peak hour
signal warrant will not be met in the morning and afternoon peak hours at the
Timberline/Vine intersection. Therefore, it is unlikely that other signal warrants will be met
in the short range (2018) future. In discussions with City staff, a signal at the existing
Timberline/Vine intersection is not desired. At the Timberline/International intersection, the
peak hour signal warrant will not be met in the morning and afternoon peak hours.
Therefore, it is unlikely that other signal warrants will be met in the short range (2018)
future. The Timberline/Lincoln intersection does not meet signal spacing and will not be
signalized. The peak hour signal warrant analyses are provided in Appendix D.
Using the long range (2035) total peak hour traffic (Figure 12), the peak hour signal
warrant will likely be met in the morning and afternoon peak hours at the Timberline/New
Vine and at the Timberline/International intersections. Based on the peak hour signal
warrant, it is likely that other volume based signal warrants would be met at the
Timberline/New Vine and Timberline/International intersection. Therefore, the
Timberline/New Vine and Timberline/International intersections were analyzed with signal
control in the long range (2035) 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
Capacity analyses were performed at the Timberline/Vine, Timberline/International,
Timberline/Lincoln, Timberline/Mulberry, Timberline/New Vine, and International/Site
Access intersections. The operations analyses were conducted for the short range and
long range futures, reflecting year 2018 and 2035 conditions, respectively.
Using the traffic volumes shown in Figure 7, the Timberline/Vine,
Timberline/International, Timberline/Lincoln, and Timberline/Mulberry intersections operate
in the short range (2018) background traffic future as indicated in Table 3. Calculation
forms for these analyses are provided in Appendix E. The key intersections will operate
acceptably with the existing control and geometry, except the Timberline/Lincoln
intersection. The Timberline/Lincoln intersection calculated delay for the morning peak
hour eastbound and westbound approaches was commensurate with level of service F
and the afternoon eastbound approach and westbound approach was commensurate with
level of service F and E, respectively. The Timberline/Vine intersection calculated delay
for the afternoon peak hour northbound approach was commensurate with level of service
E. This is considered to be normal during the peak hours at stop sign controlled
intersections along arterial streets.
Using the traffic volumes shown in Figure 8, the Timberline/New Vine,
Timberline/International, Timberline/Lincoln, and Timberline/Mulberry intersections operate
in the long range (2035) background traffic future as indicated in Table 4. Calculation
forms for these analyses are provided in Appendix F. The key intersections will operate
acceptably, except the Timberline/Lincoln intersection.
DELICH TimberVine TIS, January 2014
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TABLE 3
Short Range (2018) Background Peak Hour Operation
Intersection Movement Level of Service
AM PM
Timberline/Vine
(stop sign)
EB LT/T/RT C C
WB LT/T/RT C C
NB LT/T/RT C E
SB LT/T/RT C C
Timberline/International
(stop sign)
EB LT D C
EB RT C B
EB APPROACH C B
NB LT A A
Timberline/Lincoln
(stop sign)
EB LT F F
EB T/RT F F
EB APPROACH F F
WB LT/T/RT F E
NB LT B A
SB LT A A
Timberline/Mulberry
(signal)
EB LT D E
EB T C D
EB RT C A
EB APPROACH C D
WB LT D E
WB T C A
WB RT B A
WB APPROACH C A
NB LT D E
NB T D E
NB RT D A
NB APPROACH D E
SB LT E E
SB T/RT D D
SB APPROACH D D
OVERALL D D
DELICH TimberVine TIS, January 2014
ASSOCIATES Page 22
TABLE 4
Long Range (2035) Background Peak Hour Operation
Intersection Movement Level of Service
AM PM
Timberline/New Vine
(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
Timberline/International
(signal)
EB LT B B
EB T/RT B B
EB APPROACH B B
WB LT B B
WB T/RT B B
WB APPROACH B B
NB LT B B
NB T A A
NB RT A A
NB APPROACH A A
SB LT A A
SB T A A
SB RT A A
SB APPROACH A A
OVERALL B B
Continued on next page
DELICH TimberVine TIS, January 2014
ASSOCIATES Page 23
Continued from previous page
TABLE 4
Long Range (2035) Background Peak Hour Operation
Intersection Movement Level of Service
AM PM
Timberline/Lincoln
(stop sign)
EB LT F F
EB T/RT F F
EB APPROACH F F
WB LT/T/RT F E
NB LT B A
SB LT A A
Timberline/Mulberry
(signal)
EB LT D E
EB T C D
EB RT C A
EB APPROACH C D
WB LT D E
WB T C A
WB RT B A
WB APPROACH C A
NB LT D E
NB T D E
NB RT D A
NB APPROACH D E
SB LT E E
SB T/RT D D
SB APPROACH B C
OVERALL C C
DELICH TimberVine TIS, January 2014
ASSOCIATES Page 24
Using the traffic volumes shown in Figure 11, the Timberline/Vine,
Timberline/International, Timberline/Lincoln, and Timberline/Mulberry intersections
operate in the short range (2018) total traffic future as indicated in Table 5. Calculation
forms for these analyses are provided in Appendix G. The key intersections will operate
acceptably with the existing control, except the Timberline/Lincoln intersection. At the
Timberline/Lincoln intersection, the calculated delay for the morning peak hour eastbound
and westbound approaches was commensurate with level of service F and the afternoon
eastbound approach and westbound approach was commensurate with level of service F
and E, respectively. At the Timberline/Vine intersection, the calculated delay for the
afternoon peak hour northbound approach was commensurate with level of service E.
This is considered to be normal during the peak hours at stop sign controlled intersections
along arterial streets.
Using the traffic volumes shown in Figure 12, the Timberline/New Vine,
Timberline/International, Timberline/Lincoln, and Timberline/Mulberry intersections
operate in the long range (2035) total traffic future as indicated in Table 6. Calculation
forms for these analyses are provided in Appendix H. The key intersections will operate
acceptably, except the Timberline/Lincoln intersection.
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 operational and geometric
constraints that may create an adequate public facilities (APF) issue. Succinctly, if this
intersection does not meet the overall level of service (LOS) criteria, then a development
may add traffic such that the overall intersection delay is not increased by more than 2
percent over the base condition. The intersection falls under the operational criteria of
“commercial corridor.” In this area, acceptable operation at signalized intersections during
the peak hours is defined as level of service D or better for the overall intersection.
City of Fort Collins Traffic Operations staff has developed the base condition. The
base condition is described as the current traffic (2012) plus traffic from those
development projects that have a commitment at this intersection. Figure 13 shows the
base condition peak hour traffic. Table 7 shows the operation at the Vine/Lemay
intersection using the base condition and the 2000 Highway Capacity Manual.
Calculation forms are provided in Appendix I. In the morning and afternoon peak hours,
this intersection meets the overall level of service criteria. Therefore, under the base
condition, there is not an APF issue at this intersection.
Figure 14 shows the TimberVine site generated peak hour traffic at the
Vine/Lemay intersection. Figure 15 shows the base condition plus the site traffic at the
Vine/Lemay intersection. Table 8 shows the base condition plus site traffic operation at
the Vine/Lemay intersection. Calculation forms are provided in Appendix J. In the
morning and afternoon peak hours, this intersection continues to meet the overall level of
service criteria. Therefore, there is not an APF issue at the Vine/Lemay intersection.
DELICH TimberVine TIS, January 2014
ASSOCIATES Page 25
TABLE 5
Short Total (2018) Total Peak Hour Operation
Intersection Movement Level of Service
AM PM
Timberline/Vine
(stop sign)
EB LT/T/RT C D
WB LT/T/RT C C
NB LT/T/RT C E
SB LT/T/RT C C
Timberline/International
(stop sign)
EB LT E D
EB RT C B
EB APPROACH C C
NB LT A A
Timberline/Lincoln
(stop sign)
EB LT F F
EB T/RT F F
EB APPROACH F F
WB LT/T/RT F E
NB LT B A
SB LT A A
Timberline/Mulberry
(signal)
EB LT E E
EB T C D
EB RT C C
EB APPROACH C D
WB LT D E
WB T C B
WB RT B A
WB APPROACH C C
NB LT D E
NB T D D
NB RT D D
NB APPROACH D D
SB LT E E
SB T/RT E D
SB APPROACH E D
OVERALL D D
DELICH TimberVine TIS, January 2014
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TABLE 6
Long Range (2035) Total Peak Hour Operation
Intersection Movement Level of Service
AM PM
Timberline/New Vine
(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
Timberline/International
(signal)
EB LT B B
EB T/RT B B
EB APPROACH B B
WB LT B B
WB T/RT B B
WB APPROACH B B
NB LT B B
NB T A A
NB RT A A
NB APPROACH A A
SB LT A A
SB T A A
SB RT A A
SB APPROACH A A
OVERALL B B
Continued on next page
DELICH TimberVine TIS, January 2014
ASSOCIATES Page 27
Continued from previous page
TABLE 6
Long Range (2035) Total Peak Hour Operation
Intersection Movement Level of Service
AM PM
Timberline/Lincoln
(stop sign)
EB LT F F
EB T/RT F F
EB APPROACH F F
WB LT/T/RT F E
NB LT B A
SB LT A A
Timberline/Mulberry
(signal)
EB LT D E
EB T C D
EB RT C A
EB APPROACH C D
WB LT D E
WB T C A
WB RT B A
WB APPROACH C A
NB LT D E
NB T D E
NB RT D A
NB APPROACH D E
SB LT E E
SB T/RT D D
SB APPROACH B C
OVERALL C C
LEMAY/VINE BASE CONDITION
PEAK HOUR TRAFFIC Figure 13
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ASSOCIATES
TimberVine TIS, January 2014
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AM/PM
Lemay Avenue
Vine Drive
36/97
360/817
41/131
44/36
651/621
50/90
23/55
111/238
72/90
114/157
187/163
114/93
DELICH TimberVine TIS, January 2014
ASSOCIATES Page 29
TABLE 7
Short Range (2018) Base Condition Peak Hour Operation
Intersection Movement Level of Service
AM PM
Lemay/Vine
(signal)
EB LT D D
EB T/RT D D
EB APPROACH D D
WB LT D F
WB T/RT D D
WB APPROACH D E
NB LT/T/RT A D
SB LT/T/RT B C
OVERALL C D
TABLE 8
Short Range (2018) Base Condition Plus Site Traffic Peak Hour Operation
Intersection Movement Level of Service
AM PM
Lemay/Vine
(signal)
EB LT D D
EB T/RT D D
EB APPROACH D D
WB LT D F
WB T/RT D D
WB APPROACH D E
NB LT/T/RT A D
SB LT/T/RT B C
OVERALL C D
TIMBERVINE SITE GENERATED
PEAK HOUR TRAFFIC Figure 14
DELICH
ASSOCIATES
TimberVine TIS, January 2014
Page 30
AM/PM
Lemay Avenue
Vine Drive
0/1
1/2
1/2
2/1
2/1
1/1
LEMAY/VINE BASE CONDITION
PLUS SITE PEAK HOUR TRAFFIC Figure 15
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TimberVine TIS, January 2014
Page 31
AM/PM
Lemay Avenue
Vine Drive
36/97
360/817
41/132
44/36
651/621
51/92
23/55
111/240
72/90
116/158
189/164
115/94
DELICH TimberVine TIS, January 2014
ASSOCIATES Page 32
Geometry
Figure 16 shows a schematic of the short range (2018) geometry. This is the
existing geometry at the key intersections. Even though Timberline Road is an arterial
street, the northbound and southbound left-turn lanes at the Timberline/Vine intersections
are not recommended in the short range future. The current alignment of Timberline Road
is a temporary condition.
Figure 17 shows a schematic of the long range (2035) geometry. It was assumed
that the future Vine Drive will have a two-lane cross section with a center turn lane since
the volumes do not support a four-lane cross section given the 2035 forecasts in this TIS.
It is acknowledged that the Fort Collins Master Street Plan shows Future Vine Drive to be
a 4-lane arterial street. Daily traffic forecasts from Fort Collins Transportation Planning
indicate a daily volume of 17,000, between North College Avenue and Redwood Street;
and a daily volume of 24,000, east of Redwood Street. These forecasts were developed
with an interchange at I-25/Vine Drive. As mentioned earlier, this interchange may not be
built or it may occur after 2035. It is recommended that the right-of-way for Future Vine
Drive be dedicated, however, an interim 2-lane arterial cross section be developed that will
accommodate the forecasted traffic plus a 1.3-1.5 times volume contingency.
Pedestrian Level of Service
Appendix K shows a map of the area that is within 1320 feet of the TimberVine
development. There are three pedestrian destinations within 1320 feet of the
TimberVine development. These are: 1) the residential area to the east; 2) the
residential area to the west; and 3) the business park to the south. The TimberVine 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 achieved for all pedestrian destinations. The
Pedestrian LOS Worksheet is provided in Appendix K.
Bicycle Level of Service
Appendix K shows a map of the area that is within 1320 feet of the TimberVine
development. There are no bicycle destinations within 1320 feet of the TimberVine
development. The Bicycle LOS Worksheet is provided in Appendix I. The minimum
level of service for this site is C. This site is connected to bike lanes on Timberline
Road. Therefore, it is concluded that level of service C can be achieved.
Transit Level of Service
This area of Fort Collins is not served by Transfort. The closest route is Route
14 with a stop at the Timberline/Donella intersection.
SHORT RANGE (2018) GEOMETRY Figure 16
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TimberVine TIS, January 2014
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International Boulevard
Lincoln Avenue
Mulberry Street
Vine Drive
Timberline Road
- Denotes Lane
DELICH TimberVine TIS, January 2014
ASSOCIATES Page 35
IV. CONCLUSIONS
This study assessed the impacts of the TimberVine on the street system in the
vicinity of the proposed development in the short range (2018) and long range (2035)
futures. As a result of this analysis, the following is concluded:
- The development of the TimberVine is feasible from a traffic engineering
standpoint. At full development, the TimberVine will generate approximately 1692
daily trip ends, 127 morning peak hour trip ends, and 168 afternoon peak hour trip
ends.
- Current operation at the Timberline/Vine, Timberline/International, and
Timberline/Mulberry intersections is acceptable. Current operation at the
Timberline/Lincoln intersection is at level of service F for the minor street
movements.
- The Timberline/Vine, Timberline/International, and Timberline/Lincoln intersections
are currently unsignalized. It is not likely that volume based signal warrants would
be met at the Timberline/Vine, Timberline/International, and Timberline/Lincoln
intersections in the short range (2018) future. Using the long range (2035) 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 and
Timberline/International intersections. Based on the peak hour signal warrant, it is
likely that other volume based signal warrants would be met at these intersections
in the long range (2035) future.
- In the short range (2018) future, given development of the TimberVine and an
increase in background traffic, the Timberline/Vine, Timberline/International, and
Timberline/Mulberry intersections will operate acceptably with existing control and
geometry. The Timberline/Lincoln intersection will operate at level of service F for
the minor street movements. At the Timberline/Vine intersection, the calculated
delay for the afternoon peak hour northbound approach will experience delays that
are commensurate with level of service F. This is considered to be normal during
the peak hours at stop sign controlled intersections along arterial streets. This will
be a temporary condition.
- In the long range (2035) future, given development of the TimberVine and an
increase in background traffic, the Timberline/New Vine, Timberline/International,
and Timberline/Mulberry intersections will operate acceptably. The
Timberline/Lincoln intersection will operate at level of service F for minor street
movements.
- The short range (2018) geometry is shown in Figure 16. The long range (2035)
geometry is shown in Figure 17.
- Acceptable level of service is achieved for pedestrian, bicycle, and transit modes
based upon the measures in the multi-modal transportation guidelines and future
improvements to the street system in the area.
DELICH TimberVine TIS, January 2014
ASSOCIATES Page 37
- The short range (2016) geometry is shown in Figure 14. The long range (2030)
geometry is shown in Figure 15.
- 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. The practical limits of
pedestrian improvements would be on the TimberVine site itself.
Rounded to Nearest
5 Vehicles
Rounded to Nearest
5 Vehicles