HomeMy WebLinkAboutRAINTREE TOWNHOMES PUD PRELIMINARY - 42 93 - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYeast and north of the Senior Center. Without this access easement,
these properties would be restricted to right-in/right-out access
to Shields Street. Conversely, the right-in/right-out access to
Shields Street is recommended in order to reduce the traffic
volumes at the Senior Center main access.
5
will be at level of service B and C. The intersections along
Raintree Drive will be at level of service A for all movements.
The right-in/right-out access to Shields Street is recommended
because it will greatly reduce the "non Senior Center traffic" that
' will be using the main access due to the access easement which will
be provided. The right-in/right-out access to Shields Street will
operate acceptably. It is recommended that this access be located
on/near the property line between the vacant parcel and the parcel
' on which the 12 dwelling units are being considered. This location
will provide a single point of access while serving two properties.
This location is about 300 feet south of Raintree Drive. It is
recommended that
the right-in/right-out have
a right -turn auxiliary
'
lane. Provision
of this auxiliary lane will
move the west curb of
Shields Street about
10 feet to the west.
It will likely use the
'
sidewalk area on
sidewalk and bike
the bridge that crosses the
path can be provided on a
New Mercer Canal. The
separate structure to
the west of the
existing bridge.
' A long range analysis was not performed. Peak hour traffic
volumes on Shields Street are expected to grow modestly over the
next 20 years. Traffic growth on Shields Street will likely occur
during the non -peak hours. The signalized Shields/Raintree/Centre
intersection will operate acceptably for many years into future.
Acceptable operation will occur at the Raintree stop sign
' controlled intersections with a more than five times increase of
the traffic volumes shown in Figure 6. It is not likely that
future uses along Raintree Drive will create a five times increase
in traffic.
III. Conclusions
The following summarizes the significant findings as a result
' of this study:
The Fort Collins Senior Center traffic can be accommodated
on the area streets.
- Current traffic operation at the area intersections is
acceptable.
' - In the short range future (1995) with the Senior Center
traffic, the key intersections operate acceptably.
' - In the short range future (1995) with the traffic from the
Senior Center, fast food restaurant, and 12 dwelling units, the
key intersections will operate acceptably.
' - The access easement in the southeast corner of the Senior
Center parcel will provide better access to the properties to the
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LEGEND I
AM / NOON / PM
1995 PEAK HOUR TRAFFIC
WITH SENIOR CENTER, FAST FOOD
RESTAURANT AND 12 DWELLING UNITS
N
Figure 6
Table 3
1995 Peak Hour Operation With Senior
Center
Level
of Service
Intersection
AM
Noon
PM
Shields/Raintree/Centre
(signal)
6 Phase
B
B
C
Raintree/Shopping Center Access/
Senior Center Access
(stop sign)
NB LT/T/RT
A
A
A
SB LT/T/RT
A
A
A
EB LT
A
A
A
WB LT
A
A
A
Raintree/West Access to
Senior Center
(stop sign)
SB/LT/RT
•A
A
A
EB LT
A
A
A
Table 4
1995 Peak Hour Operation With
Senior Center,
Fast Food Restaurant,
& 12 D.U.
Level
of Service
Intersection
AM
Noon
PM
Shields/Raintree/Centre (signal)
6 Phase
B
B
C
Raintree/Shopping Center Access/
Senior Center Access (stop sign)
NB LT/T/RT
A
A
A
SB LT/T/RT
A
A
A
EB LT
A
A
A
WB LT
A
A
A
Raintree/West Access to Senior Center
(stop sign)
SB/LT/RT
A
A
A
EB LT
A
A
A
Shields/Right-in/Right-out (stop sign)
EB RT
A
A
B
a so
development. The roads considered for the operations analysis are
Raintree Drive and Shields Street.
Background traffic for impacted streets was projected for 1995
for the Senior Center alone and for the Senior Center with the
previously discussed uses that would utilize the Senior Center
access. The through traffic on Shields Street was assumed to
increase at the rate of three percent to the year 1995. The site
generated traffic is added to the background traffic.
Trip Distribution
Trip distribution was determined based upon an evaluation of
trip productions and the most likely routes available to travel
from those productiohs. The directional distribution of the
approaching and departing traffic generated at the Senior Center
is a function of:
Geographic location within the City of Fort Collins;
Location of employment/business centers and residential uses
which are likely to produce trips;
Access to the site.
Figure 4 illustrates the trip distribution percentages used in the
subsequent traffic assignments.
Traffic Assignment and Intersection Operation
Using the vehicular trip generation estimates presented in
Table 2, the site generated traffic was assigned to the area street
network. The street network consisted of Shields Street and
Raintree Drive as they are today. The analyzed intersections,
were Shields/Raintree/Centre with signalization, and the accesses
to this site from Raintree Drive. The previously discussed right-
in/right-out to Shields Street was also analyzed.
Figure 5 shows
the short
range (1995) peak hour traffic
assignment. This
assignment
also includes the increase in
background traffic as
described
earlier in this report and the
'
traffic generated by
the Senior
Center. Table 3 shows the peak
hour operation at the, key intersections. Calculation forms are
provided in Appendix
D. The signalized
Shields/Raintree/Centre
intersection will be
at level of
service B and C during the peak
hours. The accesses
to Raintree
Drive will be at level of service
A for all movements.
tFigure 6 shows the short range (1995) peak hour traffic
assignment, which includes background traffic on the area streets,
the Senior Center traffic, and the traffic generated by the
adjacent uses as discussed earlier. Table 4 shows the peak hour
operation at the key intersections. Calculation forms are provided
in Appendix E. The Shields/Raintree/Centre signalized intersection
' 3
1
1
1
1
1
1
1
ential
't-in
t-in /Right -out
SHIELDS �Z
STREET
NO SCALE
Assumed as Future
Fast Food Restaurant I
I(Existing
Private I
Residence)
I I
Future
y Access Easement
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pf
3
N
L_J
p
6
IN
N
Raintree
Shopping
Center
SITE PLAN
Figure 3
11 0 M
operation is acceptable and the overall intersection operation is
acceptable. Analyses performed for the future conditions assumed
■ a six phase signal.
' III. Proposed Development
The Fort Collins Senior Center is proposed on a 5 acre parcel
of land west of Shields Street and north of Raintree Drive. A
schematic site plan is shown in Figure 3. It is proposed that the
main access will be across from the Shopping Center access. A
I ' secondary access will be located further to the west along Raintree
Drive. A third access may be built as the .parking area expands to
the west.
There is an existing private residence and a small vacant
parcel east of the proposed Senior Center. While no proposals have
been put forth for these properties, it is likely that they will
' be redeveloped as a commercial use. For analysis purposes, it was
assumed that these parcels would be combined and have a fast food
restaurant. This was considered to be the likely highest 'intensity
' use for this site. At a meeting involving all the adjacent
property owners, it was agreed that an access to this commercial
parcel would occur via an access easement through the Senior Center
main access to Raintree. Drive. Right-in/right-out access from
' Shields Street to this parcel was also discussed. .
The property north of the proposed Senior Center is being
' considered for development with 12 dwelling units. Access to this
property would be via Shields Street. It was suggested in the
aforementioned meeting that access to this parcel from Shields
Street be shared with the future commercial parcel. This access
to Shields Street would be right-in/right-out. Therefore, both of
these adjacent properties would have access via the easement to the
Senior Center main access.
1
Trip Generation
' Trip generation estimates for the adjacent uses were obtained
from Trip Generation, 5th Edition, ITE. The trip generation for
the Senior Center was estimated based upon conversations with Fort
Collins Senior Center staff. Table 2 shows .the trip generation
used for the various uses considered in this study.
Background Traffic
Background traffic is defined as the traffic that is and/or
will be on the area streets but is not related to the proposed
' 2
1
I
Table 1
1992 Peak Hour Operation
Level
of Service
Intersection
AM
Noon
PM
Shields/Raintree/Centre (signal)
4 Phase
B
B
B
6 Phase
B
B
C
Raintree/Shopping Center Access
(stop sign)
NB LT/RT
A
A
A
WB LT
A
A
A
Table 2
Trip Generation
A.M
Peak
Daily
(Noon
Peak)
P.M.
Peak
Land Use
Trips
Trips
Trips
Trips
Trips
in
out
in
out
Senior Center
700
30
10
20
50
(60)
(60)
12 Dwelling Units
120
2
7
8
4
(5)
(5)
Fast Food - 2.0 KSF
1260
57
34
38
35
(61)
(59)
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FORT COLLINS SENIOR CENTER
SITE ACCESS STUDY
FORT COLLINS, COLORADO
OCTOBER 1992
Prepared for:
City of Fort Collins
300 LaPorte Avenue
Fort Collins, CO 80521
Prepared by:
MATTHEW J. DELICH, P.E.
3413 Banyan Avenue
Loveland, CO 80538
Phone: 303-669-2061
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July 12, 1993
o Mr. Mike Herzig
Fort Collins Development Engineer
o P.O. Box 580
o Fort Collins, CO 80522-0580
(File: 9350LT01)
Dear Mike:
Raintree Townhouses PUD is proposing to build a 28 foot wide
public street within the development. According to the Fort
Collins Design Criteria and Standards for Streets, this street
width will require a variance by the City of Fort Collins.
The reasons for requesting/granting this variance are listed
below:
- The street that is proposed to be 28 feet is a cul-de-
sac.
- The cul-de-sac will access an arterial street (Shields
Street). Given the constraints of the subject property,
the primary access must be from Shields Street. The
access to Shields Street is proposed to be a right-
in/right-out with a deceleration lane on Shields Street.
However, it is proposed that there will be alternative
access through other properties to the south.
- The street will have less than 750 ADT on it. The
development itself will have 12 dwelling units, which
will generate 120 vehicle trips on an average weekday.
The "Fort Collins Senior Center Site Access Study,"
October 1992, assumed a fast food restaurant on the
parcel to south of the Raintree Townhouses PUD. This is
likely to be the highest intensity use from a traffic
z perspective. This land use will add 470 ADT to the
UJ street segment that is just west of Shields Street.
z Therefore, the highest traffic volume just west of
z Shields Street will be 590 ADT.
J - It is proposed that the townhouses would be built on one
> side of the street.
U
Z I recommend that the street in Raintree Townhouses PUD be 28
o feet wide (curb to curb). Given the layout of the Raintree
Townhouses PUD site, I recommend on -street parking be allowed
0 only on one side of the street.
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aIf you have any questions or desire additional information,
do not hesitate to call me.
•
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X Sincerel
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Matthew J. Delich, P.E.