HomeMy WebLinkAboutCOLLINDALE BUSINESS PARK / CBW INC - I*P SITE PLAN REVIEW - 2-89 - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDY•
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MEMORANDUM
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To: Greg Fisher, The Neenan Company
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Eric Bracke, City of Fort Collins
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From: Matt Del ich /f C
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Date: January 16, 1989
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Subject: C/B/W Traffic Study
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Incorporated has proposed to locate within
the Collindale Business Park along Timberline Road in
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Fort Collins, Colorado. This memorandum acts as an
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addendum to the Collindale Business Park Site Access
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Study, July 1988. The C/B/W building is proposed to be
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located on the 6.3 acre parcel in the northwest corner
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of the development labeled as Phase 4 in Figure 1. The
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short range primary access to this site will be via
Caribou Road and Lawrence Drive. The proposed right -in/
right -out located approximately 500 feet north of
Caribou Road is also expected to be constructed by the
time the C/B/W building is built.
Two development phases were evaluated in the site
access study: short range - Phase 1, 41,000 SF Office;
and long range - full development. Table 1 shot,ls the
trip generation from the site access study. Table 2
shows the trip generation for the C✓B/W building at
their Phase A (initial phase) and Phase B (full build -
out). Table 1 used Industrial Park as the land use and
acres as the generation variable. This was appropriate
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at that level of evaluation. Table 2 used Industrial
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Park as the land use and square feet of building as the
generation variable. This is appropriate at this level
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of analysis, since a specific user and building size has
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been identified. VIhile the daily trips are much higher
using the square footage, the peak hour trips at full
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build -out are within a few percentage points of that
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used in the site access study. It is the peak hour
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trips that are used in evaluating the operation at
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various intersections and on specific street sections.
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It is, therefore, concluded that the long range
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operation analyses provided in the site access study are
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still valid.
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The short range analyses in the site access study
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included Phase 1, which was considered to be an office
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building located at the Timberline/Caribou intersection.
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It is not known whether this Phase 1 will continue to be
a short range use for this land with Phase A of the
C/B/W building added to it. If Phase 1 from the site
access study is. replaced by Phase A, the peak hour
operation at the key intersection is improved, but not
enough to change the operational level of service
reported in the site access study. If the Phase A of
C.`B (,-J is added to Phase 1 from the site access study,
the peak hour operation at the key ions.
deteriorates sometrlhat, but not enough to change the
operational level of service reported in the site access
study. Tables 3 and 4 s.holvi the operational level of
service at the short and long range futures,
respectively.
It is concluded that C:ol1indale Business Park Site
Access Study addresses the traffic impacts with the
proposed C./B1ld building in both the short and long range
futures. The Executive Summary is attached to this
memorandum as Appendix A. It is recommended that the
"on —site" street system be constructed. It is my
understanding that this has been agreed to by all
parties concerned.
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HORSETOOTH
s
PHASE 4
Industrial Park
6.3 Ac. Net
I PHASE 3 1
Industrial
Park
5.2 Ac.
Net
PHASE 5
Industrial Park
6.2 Ac. Not
PHASE 2 s PHASE 1
Industrial Office
Park
3.8 Ac. 41 K.S.F.
Net 0
COLLINDALE BUSINESS PARK
SITE PLAN
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CARIBOU
FIGURE I
Tab] e I
Trip Generation
Daily
A.M.
Peak
P.M.
Peak
Land Use
Trips
Trips
Trips
Trips
Trips
in
out
in
out
Phase 1
Office -
41 KSF
847
81
11
14
75
Phase 2
Industr.
Park -
3.8
Ac
239
38
12
11
36
Phase 3
Industr.
Park -
5.2
Ac
327
53
17
16
49
Phase 4
Industr.
Park -
6.3
Ac
396
64
20
19
59
Phase 5
Industr.
Park -
6.2
Ac
389
63
20
19
58
Total
2198
299
80
79
277
Tabl e 2
Trip Generation
Daily
A.M.
Peak
P.M.
Peak
Land
Use
Trips
Trips
Trips
Trips
Trips
in
out
in
out
C/B/W
Industrial Park
Phase
A - 429119 SF
295
23
7
8
25
Phase
8 - 63,900 SF
447
35
10
12
38
Total
742
58
17
20
63
Table
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Short Range Peak
Hour Operation
Intersection
All Peak Hour
PM Peak Hour
Timberline/Horsetooth
Existing Geometrics/Heaviest
A (0.47)
B (0.56)
LT protected
Timberline/Caribou
SB LT
A
A
P-JB LT
A
A
1!J8 LT
C
D
U1B RT/ T
A
A
EB LT
C
D
EB RT/T
B
B
Timberline/Temporary Access
EB LT
C
D
EB RT
A
A
NB LT
A
A
Table 4
Long Range Peak Hour Operation
Intersection AM
Peak Hour
PM Peak Hour
Timberline/Horsetooth
4 lane + LT lane on both sts.
E
(0.94)
F
(1.23)
4 lane + LT lane on Horsetooth/
D
(0.84)
F
(1.08)
6 lane + LT lane on Timberline
4 lane + LT & RT lane on
C
(0.76)
E
(0.95)
Horsetooth/6 lane + LT lane on
Timberline
4 lane + LT & RT lane on
C
(0.76)
C
(0.76)
Horsetooth/6 lane + LT lane +
additional LT northbound, + RT
lane southbound on Timberline
Timberline/Big Horn
A
(0.40)
A
(0.43)
Timberline/Caribou
A
(0.42)
B
(0.58)
Timberline/Right-in/Right-out Access
RT egress
A
A
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APPFEE I -AD I X Ff2ll
EXECUTIVE SU11MAR Y'
Collindale Business Park is a proposed development
located near the intersection of Caribou Drive and Timberline
Road. This traffic impact study involved the steps of trip
generation, trip distribution, trip assignment, capacity
analysis, traffic signal warrant analysis, signal progression
analysis, and accident analysis.
This study assessed the impacts of Col1indala Business
Park on the short range (1992) and long range (2010) street
system in the vicinity of the proposed development. As aa
result of this analysis, the following is concluded:
- The development of Col1indala Business Park is
feasible from a traffic engineering standpoint. At full
development as proposed, approximately 2200 trip ends will be
generated at this site daily.
- The Horsetooth/Timberline intersection currently
operates acceptably with signal control and the existing
aeometrics.
- By 1 ='92, given the first phase of development of
Collindala Business Park, Phases 1, 2, and 3 of Fox Headov)s,
and an increase in background traffic, the signalized
intersection of Horsetooth/Timberline vaill operate acceptably
vjith the existing geometrics and left -turn signal phases. At
this level of development, Timberline Road can remain a tvao
lane street vaith auxiliary lanes at Caribou Drive and at the
temporary access to Timberline. Left -turn exits from Caribou
and the temporary ace=_.=_ vii 1 1 operate unacceptably during the
afternoon peak hour. There is little that can be done to
improve this operation.
- No new si onal s are warranted in the short range
future. With full development of Col1itidala Business Park
and other nearby propertiesv signals vIill likely be warranted
at the Timberline./Big Horn and the Timberline/Caribou
intersections.
- Signals at the Timberline/Caribou and Timberline/Big
Horn intersections viill not negatively impact the signal
progression along Timberline Road.
- By 2010, the Horsetooth/Timberline intersection will
operate acceptably in the peak hours with geometric
improvements to both Horsetooth Road and Timberline Road.
The necessary geometrics are shovin in Figure 10. With
signalization, the Timberline/Caribou and Timberline/Big Horn
intersections will operate acceptably. The Timberline/access
inter -section 520 feet north of Caribou will operate
acceptably as a right-in/right-out.
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With the recommended
accident rate should be at an
urban conditions.
control and geometrics, the
acceptable level for typical