HomeMy WebLinkAboutSPRING CREEK FARMS NORTH SECOND FILING (TRAILS @ TIMBERLINE) - PDP - PDP120004 - REPORTS - TRAFFIC STUDYDELICH Spring Creek Farm TIS, January 2012
ASSOCIATES
TABLE OF CONTENTS
I. INTRODUCTION........................................................................................................ 1
II. EXISTING CONDITIONS .......................................................................................... 2
Land Use......................................................................................................................... 2
Streets............................................................................................................................. 2
Existing Traffic................................................................................................................. 6
Existing Operation........................................................................................................... 6
Pederstrian Facilities....................................................................................................... 6
Bicycle Facilities............................................................................................................ 11
Transit Facilities ............................................................................................................ 11
III. PROPOSED DEVELOPMENT............................................................................... 12
Trip Generation ............................................................................................................. 12
Trip Distribution ............................................................................................................. 14
Background Traffic Projections ..................................................................................... 14
Trip Assignment ............................................................................................................ 14
Signal Warrants............................................................................................................. 14
Operation Analysis ........................................................................................................ 21
Geometry ...................................................................................................................... 27
Pedestrian Level of Service........................................................................................... 27
Bicycle Level of Service ................................................................................................ 32
Transit Level of Service................................................................................................. 32
IV. CONCLUSIONS .................................................................................................... 33
DELICH Spring Creek Farm TIS, January 2012
ASSOCIATES
LIST OF TABLES
1. Current Peak Hour Operation.................................................................................... 9
2. Trip Generation ....................................................................................................... 12
3. Short Range (2017) Background Peak Hour Operation .......................................... 22
4. Long Range (2030) Background Peak Hour Operation........................................... 24
5. Short Range (2017) Total Peak Hour Operation ..................................................... 25
6. Long Range (2030) Total Peak Hour Operation...................................................... 28
LIST OF FIGURES
1. Site Location ............................................................................................................. 3
2. Existing Geometry..................................................................................................... 4
3. Recent Peak Hour Traffic .......................................................................................... 7
4. Adjusted/Balance Recent Peak Hour Traffic ............................................................. 8
5. Site Plan.................................................................................................................. 13
6. Trip Distribution ....................................................................................................... 15
7. Short Range (2017) Background Peak Hour Traffic................................................ 16
8. Long Range (2030) Background Peak Hour Traffic................................................. 17
9. Site Generated Peak Hour Traffic ........................................................................... 18
10. Short Range (2017) Total Peak Hour Traffic ........................................................... 19
11. Long Range (2030) Total Peak Hour Traffic............................................................ 20
12. Short Range (2017) Geometry ................................................................................ 30
13. Long Range (2030) Geometry................................................................................. 31
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. Short Range (2017) Background Peak Hour Operation
E. Long Range (2030) Background Peak Hour Operation
F. Short Range (2017) Total Peak Hour Operation
G. Long Range (2030) Total Peak Hour Operation
H. Pedestrian/Bicycle Level of Service Worksheets
DELICH Spring Creek Farm TIS, January 2012
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I. INTRODUCTION
This transportation impact study (TIS) addresses the capacity, geometric, and
control requirements for the proposed Spring Creek Farm residential development. The
proposed Spring Creek Farm is located between Drake Road and Charles Brockman
Drive, and between Timberline Road and Joseph Allen Drive in Fort Collins, Colorado.
During the course of the analysis, numerous contacts were made with the
owner/developer (McWhinney), the project engineering consultant (TST Inc.), the project
architect (Oz Architecture), 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). A scoping discussion was held with the Fort Collins Traffic
Engineering staff. 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 Spring Creek Farm TIS, January 2012
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II. EXISTING CONDITIONS
The location of the Spring Creek Farm 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 commercial, residential, or open. There are
residential uses to the west, east, and south of the site. There are commercial uses to
the southeast (Rigden Farm Commercial) and north (Timberline Commercial) of the site.
The Fort Collins Police Services Building is north of the site. The Fort Collins Police
Services Building was part of the original Spring Creek Farm. The remainder of the
Spring Creek Farms North ODP site is currently vacant. The center of Fort Collins lies
to the west of the proposed Spring Creek Farm site.
Streets
The primary streets near the Spring Creek Farms North site are Timberline Road,
Drake Road, Nancy Gray Avenue, Joseph Allen Drive, Charles Brockman Drive-Katadin
Drive, and Sagebrush Drive. Figure 2 shows a schematic of the existing geometry at
the key intersections.
Timberline Road is east of (adjacent to) the proposed Spring Creek Farm site. It
is a north-south street classified as a six-lane arterial on the Fort Collins Master Street
Plan. Currently, Timberline Road has a four-lane cross section. At the
Timberline/Drake intersection, Timberline Road has dual northbound left-turn lanes, a
southbound left-turn lane, two through lanes in each direction, and a northbound and
southbound right-turn lane. At the Timberline/Nancy Gray intersection, Timberline Road
has a northbound and southbound left-turn lane, two through lanes in each direction,
and a northbound and southbound right-turn lane. At the Timberline/Charles Brockman-
Katadin intersection, Timberline Road has a northbound and southbound left-turn lane,
two through lanes in each direction, and a northbound right-turn lane. The
Timberline/Drake and Timberline/Nancy Gray intersections have signal control. The
Timberline/Charles Brockman-Katadin intersection is stop sign controlled on Charles
Brockman Drive-Katadin Drive. The posted speed limit on this segment of Timberline
Road is 45 mph.
Drake Road is south of (adjacent to) the proposed Spring Creek Farm site. It is
an east-west street classified as a four-lane arterial, west of Timberline Road and a two-
lane arterial, east of Timberline Road on the Fort Collins Master Street Plan. Currently,
Drake Road has a four-lane cross section. At the Timberline/Drake intersection, Drake
Road has dual eastbound left-turn lanes, a westbound left-turn lane, two through lanes
in each direction, and an eastbound right-turn lane. The right-turn volume on the
Drake
Charles
Brockman
Prospect
Timberline
Nancy
Gray
Joseph
Allen
Sagebrush
SCALE: 1"=1000'
SITE LOCATION Figure 1
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Spring Creek Farm TIS, January 2012
Page 3
Spring Creek
Farm
EXISTING GEOMETRY Figure 2
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Spring Creek Farm TIS, January 2012
Page 4
Drake Road
Katadin Drive
Charles Brockman
Drive
Sagebrush
Drive
Nancy Gray
Avenue
Timberline
Road
- Denotes Lane
Required
Geometry
DELICH Spring Creek Farm TIS, January 2012
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Westbound approach at the Timberline/Drake intersection indicates the need for a right-
turn lane. For informational purposes, at the request of the City, the Timberline/Drake
intersection was analyzed with the current geometry and also with the required
westbound right-turn lane approaching Timberline Road. At the Drake/Sagebrush
intersection, Drake Road has a westbound left-turn lane and two through lanes in each
direction. The Drake/Sagebrush intersection is stop sign controlled on Sagebrush
Drive. The posted speed limit on this segment of Drake Road is 40 mph.
Nancy Gray Avenue is north of the proposed Spring Creek Farm site. It is an
east-west street classified as a local street on the west side of Timberline Road on the
Fort Collins Master Street Plan. Currently, Nancy Gray Avenue has a two-lane cross
section. At the Timberline/Nancy Gray intersection, Nancy Gray Avenue has an
eastbound and westbound left-turn lane and a combined through/right-turn lane in each
direction. At the Nancy Gray/Joseph Allen intersection, Nancy Gray Avenue has all
movements combined into a single lane. The Nancy Gray/Joseph Allen intersection is
stop sign controlled on Joseph Allen Drive. There is no posted speed limit on this
segment of Nancy Gray Avenue.
Charles Brockman Drive is north of (adjacent to) the Spring Creek Farms North
ODP site. Katadin Drive is east of the proposed Spring Creek Farm site, within the
Sidehill Development. They are east-west streets classified as local streets on the Fort
Collins Master Street Plan. Currently, Charles Brockman Drive and Katadin Drive have
two-lane cross sections. The Timberline/Charles Brockman-Katadin intersection is a ¾
intersection (right-in/right-out/left-in). At the Timberline/Charles Brockman-Katadin
intersection, Charles Brockman Drive has an eastbound right-turn lane and Katadin
Drive has a westbound right-turn lane. At the Charles Brockman/Joseph Allen
intersection, Charles Brockman Drive has all movements combined into a single lane.
The Charles Brockman/Joseph Allen intersection is stop sign controlled on Joseph Allen
Drive. There is no posted speed limit on this segment of Charles Brockman Drive-
Katadin Drive Road.
Sagebrush Drive is south of the proposed Spring Creek Farm site. It is a north-
south street classified as a local street on the Fort Collins Master Street Plan.
Sagebrush Drive only has a south leg at the Drake/Sagebrush intersection. Currently,
Sagebrush Drive has a two-lane cross section. At the Drake/Sagebrush intersection,
Sagebrush Drive has all movements combined into a single lane. There is no posted
speed limit on this segment of Sagebrush Drive.
Joseph Allen Drive is west of (adjacent to) the proposed Spring Creek Farm site.
It is a north-south street classified as a local street on the Fort Collins Master Street
Plan. Currently, Joseph Allen Drive has a two-lane cross section. At the Nancy
Gray/Joseph Allen intersection, Joseph Allen Drive has all movements combined into a
single lane. At the Charles Brockman/Joseph Allen intersection, Joseph Allen Drive has
all movements combined into a single lane. There is no posted speed limit on this
segment of Joseph Allen Drive.
DELICH Spring Creek Farm TIS, January 2012
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It was determined that the Nancy Gray/Joseph Allen and Charles
Brockman/Joseph Allen intersections would operate acceptably and that they did not
need to be analyzed.
Existing Traffic
Recent peak hour traffic volumes at the key intersections are shown in Figure 3.
The counts at the Timberline/Nancy Gray, Timberline/Charles Brockman-Katadin, and
Drake/Sagebrush intersections were obtained in January 2012. The counts at the
Timberline/Drake intersection were obtained in August 2011 by the City of Fort Collins.
Raw traffic count data is provided in Appendix B. Since the traffic counts were done on
different days, the intersection volumes were balanced. Figure 4 shows the
adjusted/balanced recent peak hour traffic volumes.
Existing Operation
The Timberline/Drake, Timberline/Nancy Gray, Timberline/Charles Brockman-
Katadin, and Drake/Sagebrush intersections were evaluated and the peak hour
operation is displayed in Table 1. Calculation forms are provided in Appendix C. The
Timberline/Drake, Timberline/Nancy Gray, Timberline/Charles Brockman-Katadin, and
Drake/Sagebrush intersections are currently operating acceptably with existing control
and geometry in the morning and afternoon peak hours. The intersections were
evaluated using techniques provided in the 2000 Highway Capacity Manual. A
description of level of service for signalized and unsignalized intersections from the
2000 Highway Capacity Manual and a table showing the Fort Collins Motor Vehicle LOS
Standards (Intersections) are also provided in Appendix B. At the Drake/Sagebrush
intersection, the calculated delay for the northbound approach was commensurate with
level of service E in the morning and afternoon peak hours. The Spring Creek Farm site
is in an area termed “mixed use districts.” In areas termed “mixed use districts,”
acceptable operation at signalized intersections during the peak hours is defined as
level of service E or better. At unsignalized intersections, acceptable operation is
considered to be at level of service F for any approach leg for an arterial/local
intersection. In such areas, it is expected that there would be substantial delays to the
minor street movements at unsignalized intersections during the peak hours. This is
considered to be normal and acceptable in urban areas.
Pedestrian Facilities
There are sidewalks along Timberline Road, Charles Brockman Drive-Katadin
Drive, Nancy Gray Avenue, and Joseph Allen Drive within the pedestrian influence area.
There are sidewalks along Drake Road, except on the north side from Timberline Road
to the Union Pacific Railroad within the pedestrian influence area. The Power Trail is
just west of the Union Pacific Railroad.
AM/PM
RECENT PEAK HOUR TRAFFIC Figure 3
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Spring Creek Farm TIS, January 2012
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315/417
1197/816
19/23
195/113
774/1099
132/240
323/191
332/349
266/273
265/178
276/308
35/34
45/11
1691/1241
7/9
12/10
1042/1474
18/20
11/29
31/14
Timberline
Road
Drake Road
5/8
1703/1260
8/6
6/3
1072/1468
17/30
7/33
0/0
3/8
16/13
0/0
9/8
911/817
17/21
765/852
2/13
26/28
12/10
Katadin Drive
Charles Brockman
Drive
Sagebrush
Drive
Nancy Gray
Avenue
AM/PM
ADJUSTED/BALANCED
RECENT PEAK HOUR TRAFFIC Figure 4
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Spring Creek Farm TIS, January 2012
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313/424
1177/855
19/23
190/115
754/1119
129/245
317/200
336/348
269/270
261/187
274/313
35/34
45/11
1703/1221
7/9
12/10
1062/1450
18/20
11/29
31/14
Timberline
Road
Drake Road
5/8
1721/1221
8/6
6/3
1080/1464
17/30
7/33
0/0
3/8
16/13
0/0
9/8
910/808
17/21
775/839
2/13
26/28
12/10
Katadin Drive
Charles Brockman
Drive
Sagebrush
Drive
Nancy Gray
Avenue
DELICH Spring Creek Farm TIS, January 2012
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TABLE 1
Current Peak Hour Operation
Intersection Movement Level of Service
AM PM
EB LT E E
EB T C D
EB RT C D
EB APPROACH D D
WB LT D E
WB T/RT D D
WB APPROACH D E
NB LT D D
NB T D C
NB RT B C
NB APPROACH D D
SB LT D E
SB T D D
SB RT E C
SB APPROACH D D
Timberline/Drake
(signal)
[current geometry]
OVERALL D D
EB LT D E
EB T D D
EB RT C D
EB APPROACH D D
WB LT D E
WB T D D
WB RT D D
WB APPROACH D D
NB LT D D
NB T D C
NB RT B C
NB APPROACH D D
SB LT D E
SB T D D
SB RT E C
SB APPROACH D D
Timberline/Drake
(signal)
[required geometry]
OVERALL D D
Continued on next page
DELICH Spring Creek Farm TIS, January 2012
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Continued from previous page
TABLE 1
Current Peak Hour Operation
Intersection Movement Level of Service
AM PM
EB LT D D
EB T/RT D D
EB APPROACH D D
WB LT D D
WB T/RT D D
WB APPROACH D D
NB LT A A
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
Timberline/Nancy Gray
(signal)
OVERALL A A
EB RT B B
WB RT C B
NB LT B C
Timberline/Charles Brockman-
Katadin
(stop sign)
SB LT C B
Drake/Sagebrush WB LT B A
(stop sign) NB LT/RT E E
DELICH Spring Creek Farm TIS, January 2012
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Bicycle Facilities
There are bicycle lanes along Timberline Road, Drake Road, and Nancy Gray
Avenue, east of Timberline Road, within the study area. The Power Trail is just west of
the Union Pacific Railroad.
Transit Facilities
Currently, this area of Fort Collins is served by Transfort Route 17. It operates
along Timberline Road.
DELICH Spring Creek Farm TIS, January 2012
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III. PROPOSED DEVELOPMENT
The Spring Creek Farm is a residential development with a two unit duplex and
312 apartment units, located in the northwest quadrant of the Timberline/Drake
intersection in Fort Collins. Figure 5 shows a site plan of the Spring Creek Farm. The
short range analysis (Year 2017) includes development of the Spring Creek Farm 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 2030. The
site plan shows that the Spring Creek Farm will use Nancy Gray Avenue, Charles
Brockman Drive, and a right-in/right-out access approximately 750 feet north of Drake
Road to access Timberline Road. The Spring Creek Farm will also have access to
Drake Road with the continuation of Joseph Allen Drive to the Drake/Sagebrush
intersection.
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
contain in Trip Generation, 8th Edition, ITE was used to estimate the trips that would be
generated by the proposed/expected uses at the Spring Creek Farm site. A trip is defined
as a one-way vehicle movement from origin to destination. Table 2 shows the expected
trip generation on a daily and peak hour basis. Parcel B2 is the existing Fort Collins
Police Services Building. The trip generation of the Spring Creek Farm development
resulted in 2042 daily trip ends, 168 morning peak hour trip ends, and 192 afternoon peak
hour trip ends. The long range trip generation shows other potential development for the
Spring Creek Farms North ODP. Parcels A1 and A2 are west of Joseph Allen Drive.
Parcel C is north of the Police Services Building. These parcels are only included in the
long range future analysis.
TABLE 2
Trip Generation
Code Use Size AWDTE AM Peak Hour PM Peak Hour
Rate Trips Rate In Rate Out Rate In Rate Out
Short Range
Parcel B1
210 Single Family 2 D.U. EQ 28 EQ 3 EQ 8 EQ 2 EQ 1
220 Apartment 312 D.U. EQ 2014 EQ 31 EQ 126 EQ 123 EQ 66
Short Range Total 2042 34 134 125 67
Long Range
Parcel A1 and A2
220 Apartment 216 D.U. EQ 1432 EQ 22 EQ 88 EQ 88 EQ 48
Parcel C
710 General Office 80.0 KSF 11.01 880 1.36 109 0.19 15 0.25 20 1.24 99
Long Range Total 4354 165 237 233 214
DELICH Spring Creek Farm TIS, January 2012
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Trip Distribution
Trip distribution for the Spring Creek Farm 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
(2017) and long range (2030) analysis futures. The trip distribution was agreed to by
City of Fort Collins staff in the scoping discussions.
Background Traffic Projections
Figures 7 and 8 show the respective short range (2017) and long range (2030)
background traffic projections. Background traffic projections for the short and long
range future horizons were obtained by reviewing the North Front Range Regional
Transportation Plan and various traffic studies prepared for this area of Fort Collins.
The other traffic studies in this area are Timberline Commercial, Spring Creek Farms
North ODP, and Johnson Farm (Sidehill, Filing 2). Based upon these sources, it was
determined that traffic volumes on Timberline Road and Drake Road, would increase by
approximately 1.5% per year in the short range future and by approximately 1.25% per
year in the long range future. It was assumed that half of Timberline Commercial and
two-thirds of Johnson Farm would be developed in the short range future. This traffic
was added to the short range (2017) background traffic volumes. The approved
Timberline Commercial and Johnson Farm traffic were added to determine the long
range volumes at key intersections. The background traffic growth was agreed to by
City of Fort Collins staff in the scoping discussions.
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 shows the site generated peak hour traffic assignment. Figures 10 and
11 show the respective short range (2017) and long range (2030) 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. The
Timberline/Drake and Timberline/Nancy Gray intersections are currently signalized. The
Timberline/Charles Brockman-Katadin and Drake/Sagebrush-Joseph Allen intersections
will not have traffic signals in the future.
TRIP DISTRIBUTION Figure 6
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Spring Creek Farm TIS, January 2012
Page 15
Timberline
Road
Drake Road
Katadin Drive
Charles Brockman
Drive
Sagebrush
Drive
Nancy Gray
Avenue
SITE
35%/35%
0%/5%
15%/10%
25%/25%
25%/25%
Residential/Office
AM/PM
SHORT RANGE (2017) BACKGROUND
PEAK HOUR TRAFFIC Figure 7
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Spring Creek Farm TIS, January 2012
Page 16
337/457
1294/987
24/41
246/170
856/1252
144/282
367/275
370/397
290/291
290/209
323/353
72/51
45/11
1920/1397
11/31
12/10
1235/1675
20/46
11/29
37/20
Timberline
Road
Drake Road
28/26
1905/1345
24/46
6/3
1168/1636
35/102
32/68
1/5
18/37
44/33
3/4
81/58
1015/953
17/21
904/967
2/13
26/28
12/10
Charles Brockman Katadin Drive
Drive
Sagebrush
Drive
Nancy Gray
Avenue
AM/PM
LONG RANGE (2030) BACKGROUND
PEAK HOUR TRAFFIC Figure 8
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390/530
1540/1235
35/70
340/260
1055/1515
175/350
460/400
440/490
335/340
350/255
415/430
105/80
45/10
2310/1785
20/65
15/10
1560/2095
25/85
10/30
45/30
Timberline
Road
Drake Road
65/55
2250/1655
40/105
5/5
1370/1985
60/210
70/120
5/15
40/70
85/65
10/10
190/135
1220/1220
20/20
1140/1205
5/15
25/30
15/10
Katadin Drive
Charles Brockman
Drive
Sagebrush
Drive
Nancy Gray
Avenue
AM/PM
SITE GENERATED
PEAK HOUR TRAFFIC Figure 9
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Spring Creek Farm TIS, January 2012
Page 18
7/27
1/6
7/3
3/1
5/2
1/4
4/16
2/10
7/3
2/8
10/39
Drake Road
12/47
37/20
Katadin Drive
Charles Brockman
Drive
Sagebrush
Drive
Nancy Gray
Avenue
Joseph Allen
Drive
NOM
31/17
NOM
15/6
9/34
13/50
42/24
8/32
2/7
Timberline
Road
Right-in/
Right-out
2/7
26/15
16/9
7/3
SHORT RANGE (2017) TOTAL
PEAK HOUR TRAFFIC Figure 10
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344/484
1295/993
24/41
248/177
882/1267
160/291
374/278
373/398
295/293
291/213
327/369
72/51
47/21
1927/1400
11/31
14/18
1245/1714
20/46
11/29
37/20
Drake Road
28/26
1912/1348
24/46
6/3
1180/1683
35/102
69/88
1/5
18/37
44/33
3/4
81/58
Charles Brockman Katadin Drive
Drive
Sagebrush
Drive
Nancy Gray
Avenue
Joseph Allen
Drive
26/28
NOM
12/10
31/17
NOM
15/6
9/34
1015/953
17/21
13/50
904/967
2/13
42/24
LONG RANGE (2030) TOTAL
PEAK HOUR TRAFFIC Figure 11
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Spring Creek Farm TIS, January 2012
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400/570
1570/1255
35/70
340/265
1095/1560
200/375
465/405
450/495
350/345
365/265
420/455
105/80
50/35
2355/1795
20/65
20/35
1575/2165
25/85
30/40
45/30
Drake Road
105/60
2255/1660
40/105
50/30
1385/2045
60/210
145/190
5/20
45/105
85/65
15/10
190/135
Katadin Drive
Charles Brockman
Drive
Sagebrush
Drive
Nancy Gray
Avenue
Joseph Allen
Drive
25/30
NOM
15/10
60/55
NOM
30/15
45/60
1220/1220
20/20
15/70
1140/1205
5/15
DELICH Spring Creek Farm TIS, January 2012
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TABLE 3
Short Range (2017) Background Peak Hour Operation
Intersection Movement Level of Service
AM PM
EB LT E E
EB T D D
EB RT C D
EB APPROACH D D
WB LT E E
WB T/RT E E
WB APPROACH E E
NB LT E E
NB T E D
NB RT C C
NB APPROACH E D
SB LT E E
SB T D E
SB RT D C
SB APPROACH D E
Timberline/Drake
(signal)
[current geometry]
OVERALL E E
EB LT E E
EB T D D
EB RT C D
EB APPROACH D D
WB LT E E
WB T D D
WB RT D D
WB APPROACH D D
NB LT D E
NB T E D
NB RT B C
NB APPROACH E D
SB LT E E
SB T C D
SB RT D B
SB APPROACH D D
Timberline/Drake
(signal)
[required geometry]
OVERALL D D
Continued on next page
DELICH Spring Creek Farm TIS, January 2012
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Continued from previous page
TABLE 3
Short Range (2017) Background Peak Hour Operation
Intersection Movement Level of Service
AM PM
EB LT D D
EB T/RT D D
EB APPROACH D D
WB LT D D
WB T/RT D D
WB APPROACH D D
NB LT A A
NB T A A
NB RT A A
NB APPROACH A A
SB LT B A
SB T A A
SB RT A A
SB APPROACH A A
Timberline/Nancy Gray
(signal)
OVERALL A A
EB RT B C
WB RT D C
NB LT C C
Timberline/Charles Brockman-
Katadin
(stop sign)
SB LT C C
Drake/Sagebrush WB LT B B
(stop sign) NB LT/RT F F
DELICH Spring Creek Farm TIS, January 2012
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TABLE 4
Long Range (2030) Background Peak Hour Operation
Intersection Movement Level of Service
AM PM
EB LT D E
EB T D D
EB RT C D
EB APPROACH D D
WB LT D E
WB T D E
WB RT E D
WB APPROACH D E
NB LT C D
NB T C C
NB RT C C
NB APPROACH C D
SB LT D D
SB T D D
SB RT E D
SB APPROACH D D
Timberline/Drake
(signal)
OVERALL D D
EB LT D D
EB T/RT D D
EB APPROACH D D
WB LT D E
WB T/RT D D
WB APPROACH D D
NB LT A B
NB T/RT B B
NB APPROACH A B
SB LT B C
SB T/RT B B
SB APPROACH B B
Timberline/Nancy Gray
(signal)
OVERALL B B
EB RT A B
WB RT C B
NB LT C C
Timberline/Charles Brockman-
Katadin
(stop sign)
SB LT D C
Drake/Sagebrush WB LT B B
(stop sign) NB LT/RT F F
DELICH Spring Creek Farm TIS, January 2012
ASSOCIATES Page 25
TABLE 5
Short Range (2017) Total Peak Hour Operation
Intersection Movement Level of Service
AM PM
EB LT E E
EB T D D
EB RT C D
EB APPROACH D D
WB LT E E
WB T/RT E E
WB APPROACH E E
NB LT E E
NB T E D
NB RT C C
NB APPROACH E E
SB LT E E
SB T D E
SB RT D B
SB APPROACH D E
Timberline/Drake
(signal)
[current geometry]
OVERALL E E
EB LT E E
EB T D D
EB RT C D
EB APPROACH D D
WB LT E E
WB T D D
WB RT D D
WB APPROACH D D
NB LT D E
NB T E D
NB RT B C
NB APPROACH E D
SB LT E E
SB T C E
SB RT D B
SB APPROACH D D
Timberline/Drake
(signal)
[required geometry]
OVERALL D D
Continued on next page
DELICH Spring Creek Farm TIS, January 2012
ASSOCIATES Page 26
Continued from previous page
TABLE 5
Short Range (2017) Total Peak Hour Operation
Intersection Movement Level of Service
AM PM
EB LT D E
EB T/RT D D
EB APPROACH D D
WB LT D D
WB T/RT D D
WB APPROACH D D
NB LT A C
NB T A A
NB RT A A
NB APPROACH A A
SB LT B A
SB T A B
SB RT A A
SB APPROACH A B
Timberline/Nancy Gray
(signal)
OVERALL B B
EB RT B B
WB RT D C
NB LT C D
Timberline/Charles Brockman-
Katadin
(stop sign)
SB LT C C
EB LT B B
WB LT B B
NB LT/T/RT F F
Drake/Sagebrush-Joseph Allen
(stop sign)
SB LT/T/RT E D
EB LT B B
WB LT B B
NB LT F F
NB T/RT B B
NB APPROACH F F
SB LT F F
SB T/RT B B
Drake/Sagebrush-Joseph Allen
(stop sign)
[with minor street left-turn lanes]
SB APPROACH E D
Timberline/Right-in/Right-out
(stop sign) SB LT B B
DELICH Spring Creek Farm TIS, January 2012
ASSOCIATES Page 27
Using the traffic volumes shown in Figure 11, the Timberline/Drake,
Timberline/Nancy Gray, Timberline/Charles Brockman-Katadin, Drake/Sagebrush-
Joseph Allen, and Timberline/Right-in/Right-out intersections operate in the long range
(2030) total traffic future as indicated in Table 6. Calculation forms for these analyses are
provided in Appendix G. The key intersections will operate acceptably. At the
Drake/Sagebrush-Joseph Allen intersection the calculated delay for the northbound and
southbound approaches was commensurate with level of service F in the morning and
afternoon peak hours with all northbound and southbound movements combined into a
single lane. Since the longest delays at unsignalized intersections along arterial streets
are associated with the minor street left turns, provision of left-turn lanes will allow the right
turns on these legs to have significantly less delay. With minor street left-turn lanes at the
Drake/Sagebrush-Joseph Allen intersection the calculated delay for the northbound and
southbound approaches was commensurate with level of service F in the morning and
afternoon peak hours. This is considered to be normal and acceptable during the peak
hours at stop sign controlled intersections along arterial streets.
Geometry
Figure 12 shows a schematic of the required short range (2017) geometry. This is
the existing geometry at the Timberline/Nancy Gray, and Timberline/Charles Brockman-
Katadin intersections. At the Timberline/Drake intersection a westbound right-turn lane
is required with the current traffic. However, the Timberline/Drake intersection operates
acceptably without it and the Spring Creek Farm Development adds little traffic to this
movement. At the Drake/Sagebrush-Joseph Allen intersection it is recommended that
the Sagebrush Drive-Joseph Allen Drive legs have a northbound and southbound left-
turn lane and a northbound and southbound through/right-turn lane. A westbound right-
turn lane is also required at this intersection. At the Timberline/Right-in/Right-out
intersection a southbound right-turn lane is not required.
Figure 13 shows a schematic of the long range (2030) geometry. The geometry at
the Timberline/Drake, Timberline/Nancy Gray, Timberline/Charles Brockman-Katadin,
Drake/Sagebrush-Joseph Allen, and Timberline/Right-in/Right-out intersections in the
long range future was determined based upon achieving acceptable operation, meeting
the geometric criteria in LCUASS, and the City of Fort Collins Master Street Plan.
Pedestrian Level of Service
Appendix H shows a map of the area that is within 1320 feet of the Spring Creek
Farm development. There will be six pedestrian destinations within 1320 feet of the
Spring Creek Farm development. These are: 1) the residential area to the east of the
site (Sidehill), 2) the Fort Collins Police Services Building within the site, 3) the
residential area to the west of the site, 4) the commercial area (Timberline Commercial
to the north of the site, 5) the commercial area (Rigden Farms) to the southeast of the
site, and 6) the residential area to the south of the site. This site is in an area type
DELICH Spring Creek Farm TIS, January 2012
ASSOCIATES Page 21
Operation Analysis
Operation analyses were performed at the Timberline/Drake, Timberline/Nancy
Gray, Timberline/Charles Brockman-Katadin, Drake/Sagebrush-Joseph Allen, and the
Timberline/Site Access Right-in/Right-out intersections. The Timberline/Drake
intersection was analyzed with and without the required westbound right-turn lane in the
short range (2017) future. The Drake/Sagebrush intersection was analyzed with a
northbound and southbound left-turn lane and with all northbound and southbound
movements combined into a single lane. The operations analyses were conducted for the
short range and long range futures, reflecting year 2017 and 2030 conditions, respectively.
Using the traffic volumes shown in Figure 7, the Timberline/Drake,
Timberline/Nancy Gray, Timberline/Charles Brockman-Katadin, and Drake/Sagebrush
intersections operate in the short range (2017) background traffic future as indicated in
Table 3. Calculation forms for these analyses are provided in Appendix D. The key
intersections will operate acceptably with the existing control and geometry. At the
Drake/Sagebrush intersection the calculated delay for the northbound approach was
commensurate with level of service F in the morning and afternoon peak hours. This is
considered to be normal and acceptable during the peak hours at stop sign controlled
intersections along arterial streets.
Using the traffic volumes shown in Figure 8, the Timberline/Drake,
Timberline/Nancy Gray, Timberline/Charles Brockman-Katadin, and Drake/Sagebrush
intersections operate in the long range (2030) background traffic future as indicated in
Table 4. Calculation forms for these analyses are provided in Appendix E. The key
intersections will operate acceptably. At the Drake/Sagebrush intersection the calculated
delay for the northbound approach was commensurate with level of service F in the
morning and afternoon peak hours. This is considered to be normal and acceptable
during the peak hours at stop sign controlled intersections along arterial streets.
Using the traffic volumes shown in Figure 10, the Timberline/Drake,
Timberline/Nancy Gray, Timberline/Charles Brockman-Katadin, Drake/Sagebrush-
Joseph Allen, and Timberline/Right-in/Right-out intersections operate in the short range
(2017) total traffic future as indicated in Table 5. Calculation forms for these analyses are
provided in Appendix F. The key intersections will operate acceptably with existing control
and geometry. At the Drake/Sagebrush-Joseph Allen intersection the calculated delay for
the northbound approach was commensurate with level of service F in the morning and
afternoon peak hours with all northbound and southbound movements combined into a
single lane. Since the longest delays at unsignalized intersections along arterial streets
are associated with the minor street left turns, provision of left-turn lanes will allow the right
turns on these legs to have significantly less delay. With minor street left-turn lanes at the
Drake/Sagebrush-Joseph Allen intersection the calculated delay for the northbound
approach and southbound left-turn was commensurate with level of service F in the
morning and afternoon peak hours. This is considered to be normal and acceptable
during the peak hours at stop sign controlled intersections along arterial streets.
DELICH Spring Creek Farm TIS, January 2012
ASSOCIATES Page 28
TABLE 6
Long Range (2030) Total Peak Hour Operation
Intersection Movement Level of Service
AM PM
EB LT D E
EB T D D
EB RT C D
EB APPROACH D D
WB LT D E
WB T D E
WB RT E D
WB APPROACH E E
NB LT D D
NB T C C
NB RT C C
NB APPROACH D D
SB LT D D
SB T D E
SB RT E C
SB APPROACH D D
Timberline/Drake
(signal)
OVERALL D D
EB LT D E
EB T/RT D D
EB APPROACH D D
WB LT D E
WB T/RT D D
WB APPROACH D E
NB LT A B
NB T/RT B B
NB APPROACH B B
SB LT B C
SB T/RT B B
SB APPROACH B B
Timberline/Nancy Gray
(signal)
OVERALL B B
Continued on next page
DELICH Spring Creek Farm TIS, January 2012
ASSOCIATES Page 29
Continued from previous page
TABLE 6
Long Range (2030) Total Peak Hour Operation
Intersection Movement Level of Service
AM PM
EB RT B C
WB RT C B
NB LT C D
Timberline/Charles Brockman-
Katadin
(stop sign)
SB LT D C
EB LT B B
WB LT B B
NB LT/T/RT F F
Drake/Sagebrush-Joseph Allen
(stop sign)
SB LT/T/RT F F
EB LT B B
WB LT B B
NB LT F F
NB T/RT B B
NB APPROACH F F
SB LT F F
SB T/RT B B
Drake/Sagebrush-Joseph Allen
(stop sign)
[with minor street left-turn lanes]
SB APPROACH F F
Timberline/Right-in/Right-out
(stop sign) SB LT B C
SHORT RANGE (2017) GEOMETRY Figure 12
DELICH
ASSOCIATES
Spring Creek Farm TIS, January 2012
Page 30
Drake Road
Charles Brockman Katadin Drive
Drive
Sagebrush
Drive
Nancy Gray
Avenue
Timberline
Road
- Denotes Lane
Required
Geometry
LONG RANGE GEOMETRY Figure 13
DELICH
ASSOCIATES
Spring Creek Farm TIS, January 2012
Page 31
Drake Road
Charles Brockman Katadin Drive
Drive
Sagebrush
Drive
Nancy Gray
Avenue
Joseph Allen
Drive
Timberline
Road
Right-in/
Right-out
- Denotes Lane
DELICH Spring Creek Farm TIS, January 2012
ASSOCIATES Page 32
termed “transit corridor.” Acceptable pedestrian level of service will be achieved for all
pedestrian destinations. The Pedestrian LOS Worksheet is provided in Appendix H.
The minimum level of service for “transit corridor” is B, except for Visual Interest &
Amenities which is C.
Bicycle Level of Service
Appendix H shows a map of the area that is within 1320 feet of the Spring Creek
Farm development. There will be two bicycle destinations within 1320 feet of the Spring
Creek Farm development. These are: 1) the commercial area (Timberline Commercial)
to the north of the site and 2) the commercial area (Rigden Farms) to the southeast of
the site. The Bicycle LOS Worksheet is provided in Appendix H. The minimum level of
service for this site is C. This site is connected to Timberline Road and Drake Road.
Therefore, it is concluded that level of service C can be achieved. The Power Trail is
just west of the Union Pacific Railroad.
Transit Level of Service
This area of Fort Collins is served by Transfort Route 17. This route has transit
stops just north of the Timberline/Drake intersection, just south of the
Timberline/Charles Brockman-Katadin intersection, and just north of the
Timberline/Nancy Gray intersection, which are adjacent to this site.
DELICH Spring Creek Farm TIS, January 2012
ASSOCIATES Page 33
IV. CONCLUSIONS
This study assessed the impacts of the Spring Creek Farm on the street system in
the vicinity of the proposed development in the short range (2017) and long range (2030)
future. As a result of this analysis, the following is concluded:
- The development of the Spring Creek Farm is feasible from a traffic engineering
standpoint. At full development, the Spring Creek Farm will generate approximately
2042 daily trip ends, 168 morning peak hour trip ends, and 192 afternoon peak
hour trip ends.
- The Timberline/Drake and Timberline/Nancy Gray intersections are currently
signalized. The Timberline/Charles Brockman-Katadin and Drake/Sagebrush-
Joseph Allen intersections will not have traffic signals in the future.
- In the short range (2017) future, given development of the Spring Creek Farm and
an increase in background traffic, the Timberline/Drake, Timberline/Nancy Gray,
Timberline/Charles Brockman-Katadin, Drake/Sagebrush-Joseph Allen, and
Timberline/Right-in/Right-out intersections will operate acceptably with the existing
geometry and control.
- In the long range (2030) future, given development of the Spring Creek Farm and
an increase in background traffic, the Timberline/Drake, Timberline/Nancy Gray,
Timberline/Charles Brockman-Katadin, Drake/Sagebrush-Joseph Allen, and
Timberline/Right-in/Right-out intersections will operate acceptably with the
recommended geometry and control.
- The short range (2017) geometry is shown in Figure 12. At the Timberline/Drake
intersection a westbound right-turn lane is required with the current traffic.
However, the Timberline/Drake intersection operates acceptably without it and
the Spring Creek Farm Development adds little traffic to this movement. At the
Drake/Sagebrush-Joseph Allen intersection it is recommended that the
Sagebrush Drive-Joseph Allen Drive legs have a northbound and southbound
left-turn lane and a northbound and southbound through/right-turn lane. A
westbound right-turn lane is also required at this intersection. At the
Timberline/Right-in/Right-out intersection a southbound right-turn lane is not
required.
- The long range (2030) geometry is shown in Figure 13. The geometry at the
Timberline/Drake, Timberline/Nancy Gray, Timberline/Charles Brockman-
Katadin, Drake/Sagebrush-Joseph Allen, and Timberline/Right-in/Right-out
intersections in the long range future was determined based upon achieving
acceptable operation, meeting the geometric criteria in LCUASS, and the City of
Fort Collins Master Street Plan.
- 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.
40/25
10/30
1595/2175
Timberline
Road
Right-in/
Right-out
AM/PM
8/32
1248/1711
Timberline
Road
Right-in/
Right-out
AM/PM