HomeMy WebLinkAboutCOVENTRY SUBDIVISION FILING 2 FINAL - 80 93B - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYli indicated by the level of service -for minor street left turns, the
delays can be significant.during 'the peak hours. If the City of
( Fort Collins desires to have a traffic signal along this segment
of Harmony Road in order to maintain vehicle :queues, this location
would fit into a progression pattern. The time -space diagrams
shown in Appendix F indicate that a signal at Hinsdale Drive .would
have no negative impact to Harmon Road y progression. The time -
space diagrams indicate a number of travel speeds on Harmony Road.
The progression bandwidths are primarily controlled by the amount
I of Shields Street and College Avenue green time for Harinony.Road.
j ,
III. Conclusions
The following summarizes the significant findings as a result
of this study:
Traffic from the McGraw Site and other existing uses in the
area can be handled on the area streets with various improvements.
- Traffic operation at the area intersections is acceptable,
except for minor street left turns at stop sign controlLed
intersections along Harmony Road. The delays experienced by these
drivers are normal at stop sign controlled intersections along,
1, arterial streets during peak hours.
At the short range future (1995), the key intersections
operate acc,eptab-ly, except for minor street left turns to Harmony
Road. At the"Harmony/Hinsdale and Harmony/Crest intersections, the
northbound left turns will experience delays which are common at
arterial/local street intersections with stop sign control. The
following auxiliary lanes exist at the Harmony/Hinsddale
intersection: l) eastbound right -turn lane, 2) westbound left -turn
' lane, 3) northbound right -turn lane, and 4) northbound left -turn
lane. At the Harmony/Crest intersection, a westbound left -turn
lane on. Harmony Road is recommended.
At the -long range future (2010), the key intersections will
operate acceptably, except for thesame northbound -left turns at
the Harmony/Hinsdale and Harmony/Crest intersections, which will
experience some delays. It is. expected that Harmony Road will be
built to four lane cross sections.. The same auxiliary lanes shown
in the short range recommendat.ion-should be .provided in the long
range future.
- While a signal. is not likely to be warranted at the
Harmony/Hinsdale intersection, if the City desires to introduce a
signal along Harmony Road in cider to maintain traffic, queues;: this
location would -not negatively; impact progression.
6
Tab 1 e. 4
'
Long Range
(2015) Peak
Hour Operation
.
Level of
Service
Intersection
AM
PM
'
Shields/Harmony (signal)'
C
C
s
�
Harmony/Hinsdale (stop sign)
'
NB LT
E
E
NB RT
C
A
WB LT
B
A
Harmony/Crest (stop sign)
NB LT
D
E
NB RT
B
A
WB LT
A
A
Hinsdale/Intersection A
(stop --sign)
EB LT/T/RT
A
A:
WB LT/T/RT
A
A
SB LT =
A
A
NB LT
A
A
.
Hinsdale/Intersection_B
(stop
sign)
EB LT/RT
A
A
NB LT
=
A
A
'
Hinsdale/Intersection C
EB LT/RT
(stop
sign)
A
A
NB LT
A
A
'
Hinsdale/Intersection D-(stop
sign)
EB LT/RT
A
A
NB LT.
A
A
gCD-
� o-160/460
200/540
-100/1 so
80/60
745/1455
_
�r HARMONY
ROAD /—
/-- 5/15
10�80 --�
}
14040/40 �/
40/40 I
1555/1045
740 400 -�
110/80 -�
to o 0
��
0o
5/5
no
p
c
..
M m
o
��N
In
to
0
..
1
o, �
�--10/5
a
Q
'W
If) j- LO NOM.
NOM. -
m
U)
1
G
20/10 }
LU
Cr
J
NOM. - � :i
U
_
w
NOM. - � . z —U
'
2
,n
o�
o
LnJl
1
B
k
S
NOM.
o�
Ln
z_
1
o
L0 CI
1
�+
5/5 —1
1
NOM. �: :i in
o�
zo
Lu Ln
1
O>�„
o co
Ln
LO
Ro PM
to nearest
10/Mo
5 Vehicles.
n
� �
0
n
`I
LONG RANGE PEAK
. HOUR TRAFFIC
Figure 6
_ -
i
to its full width. However, both east and west of the -McGraw Site,
' the south.side of Harmony Road is not improved. West of the McGraw
Site is the Front Range Community College Campus, and east of the
McGraw Site are some smaller land parcels. It is uncertain whether
these property owners will improve the south side of Harmony Road
to a full arterial cross section. This may need to be -accomplished
as a capital improvement project by the City,.of Fort Collins. If
' the frontage along Harmony Road were improved, it would be striped
to function: just as the current cross section functions. There is
merit in -.improving the south side of Harmony Road from Shields
Street to :the railroad tracks at one time rather than with
piecemeal construction projects. Therefore, it is recommended that
this development participate in the overall improvement of Harmony
Road when funds become available for the entire segment to be
' improved from Shields Street to the railroad tracks.
Figure 6 _shows the long range (2010) peak hour traffic
' assignment which includes the background traffic on the area
streets. Table 4, shows the peak hour operation at the key
intersections. Calculation forms are provided in Appendix.E. By
this future time,, it is expected that Harmony -Road -and Shields
Street will have four lane cross sections as .,per Fort Collins
arterial street standards. The intersection approach geometry on
both Hinsdale Drive and Crest Road should be one left -turn lane
' and one right -turn lane. The Harmony/Shields_ signalized
intersection will operate at level of service C. With the 2010
volumes and the wider cross section, an eight phase signal will be
' required at this location. The Harmony/Hinsdale and Harmony/Crest
stop sign controlled intersection will operate acceptably, except
for left -turn. exits from the minor streets. The 1985 Highway
' Capacity Manual analysis technique shows this operation to be at
level of service E. However, the range of delay per approach
vehicle will be 16-26 seconds in the morning peak hour and 21-31
seconds in the afternoon peak hour at -the Harmony/Hinsdale
' intersection, and 11-21 seconds in the morning peak hour and 14-24
seconds in the afternoon peak hour at the Harmony/Crest
intersection. These delays are considered to be at level of
service C/D. This level of service occurs at many arterial/local
street intersections throughout Fort Collins. This type of
operation is generally accepted.. With the four lane cross section
' on Harmony Road, a right -turn deceleration lane, and a left -turn
deceleration and storage. lane are required on Harmony Road at
Hinsdale.' At the Harmony/Crest intersection, a westbound
deceleration and storage lane is required on' -Harmony Road.
E. Harmony/Hinsdale Signal
approximately 2300 feet east of Shields
traffic pr•ojections_shown in this study,..
not be warranted :at the Harmony/Hinsdale
as observed during traffic counting and as:
Hinsdale Drive is
Street. Baseduponthe
a, traffic. signal would
inters.ection. However;
5
Table
3
Short Range (1995) Peak
Hour Operation
Level of
Service
Intersection
AM
PM
Shields/Harmony (signal)
C
B
Harmony/Hinsdale (stop sign)
NB LT
E
E
NB RT
D
B
WB LT
C
B
Harmony/Crest (stop sign)
NB LT
E
E
NB RT
C
B
WB LT
C
A
Hinsdale/Intersection A.(stop
sign)
EB LT/T/RT
A
A
-WB LT/T/RT
A
A
--SB LT
A
A
NB LT
A
A
Hinsdale/Intersection B=(stop
sign)
EB LT/RT
A
A -
NB LT
A
A
Hinsdale/Intersection C (stop
sign).
EB LT/RT
A
A
NB LT
A
A
Hinsdale/Intersection D (stop
sign)
EB LT/RT
A
A
NB LT
A
A
o rn
fit__ 115/320
,�>
N PO N
f 100/400
65/140
500 1040
75/150
-� 570/1185
r— HA
ONY ROAD j�
5/15
70 55 —�
f r
1070/735 —+- �/
35/30 —�
Ivy
1215/815 —�
530 290 —�
�n v� o
: n
5/5 —�
n o '
80/55 -�
��
o o
In
o
_
MLou7
N to
°a
\��
W
"I' "' f NOM.
1Y
N
j�
NOM.
N
20/10 �. f
r
I
W
c
0
NOM. mg �
U
W
NOM. z o z
Ca
n
o2
J�uh
LO
5/5�,
NOM. rn
o�
Z to
LO
.f
5/5--/
NOM. —� Ln
000
zo
in
<W
CO
o 20
7 O
CoLo D
AM / PM
Rounded
to: nearest
10/10 f
5 Vehicles.
NOM. -� - ::g LO
o^�
zo
N
SHORT
RANGE
PEAK HOUR TRAFFIC
Figure 5
1 Hinsdale Drive, and Crest Road as they are today. The analyzed
intersections were Harmony/Shields with the existing signalization,
Harmony/Hinsdale with stop sign control, Harmony/Crest with stop
sign control, and four intersections along Hinsdale Drive with stop
sign control. The intersections along Hinsdale Drive are labelled
A, B, C, and D in Figure 3'. The current traffic counts (Figure 2)
' reflect the -use of Hinsdale Road by Clarendon Hills residents..'A
cursory analysis indicates that the Harmony/Hinsdale intersection
is primarily used by northbound to eastbound and westbound .to
' southbound vehicle trips. It appears that trips to/from the west
' and from the north (via Shields) are utilizing the Shields/
Clarendon Hills Boulevard intersection. This is not surprising
since that route is much easier than using the Harmony/Hinsdale
' intersection. As reported in the neighborhood meeting, left turns
from Hinsdale to Harmony are difficult. This is reflected. -in the.
current level of service o.f this movement. The background traffic
on Hinsdale -Drive does not reflect any change in this travel
behavior.
Figure 5 shows the - short range (1995) peak hour traffic
assignment., This assignment also includes a 2 percent per year
increase in background traffic as described earlier in this report.
Table 3 shows the peak hour operation at -the key intersections.
Calculation forms are provided in Appendix D. All of the key
intersections will operate acceptably with the existing geometrics,
except for the northbound left turns from Hinsdale Drive and from
Crest Road to westbound Harmony Road. .These turns will. operate at,
level of service E. Based upon recent research, the delay per
approach vehicle will. be 19-29 seconds during the morning peak hour
and 21-31 seconds -during the afternoon peak hour at the
Harmony/Hinsdale intersection, and the delay per approach vehicle
will be 15-25 seconds during. both peak hours at the Harmony/Crest
intersection-. Using delay criteria, .the operation of these left
' turns would be in the level of service C/D category even though the
operati.ons technique shows the level of service in category E: It
is recommended that this operation be accepted. At the
' Harmony./Hinsdale intersection, the following geometry is required:
1) eastbound - one through lane and one right -turn deceleration
lane; 2) westbound - one through lane and one left -turn
' deceleration/storage lane; 3) northbound - one left -turn lane (100
feet) and one right -turn lane; and 4),southbound -one lane.. This
geometry was constructed with the development of the McGraw
Elementary School. At the Harmony/Crest intersection, .'a westbound
' left -turn lane on Harmony Road is required. This lane can be
accommodated on the currently paved area of Harmony Road.
' As part of the development of this property, the City of,Fort
Collins will require that.one half, of the 'Harmony Road arterial
cross section be built along the' frontage of this property. The
full arterial width is 70 ,feet.:, The. north -side !of Harmony Road, has
been completed as a requirement of. development on the north.
Therefore, approximately 1700 feet of Harmony Road wil'lr be built
4
I
Figure 4
N
B. Background Traffic
Background traffic is defined:as.the traffic that is and/or
will 'be on the area streets that is not related to the proposed
development. The intersections considered for the operations
analysis are Harmony/Shields, Harmony/Hinsdale, and Harmony/Crest.
Backgroundtraffic for impacted streets was projected for each
of the future years analyzed (1995and:2�010). Background traffic
was projected to increase at 2 percent per year for all future
years. This, rate of increase is normal for streets and roads in
the City of Fort Collins. It accounts for general traffic growth
and some level of continued development in the vicinity that would
also contribute to traffic growth.
Traffic from two developments.were specifically added to the
background traffic. -These were Arapahoe Farm' and Fossil Creek
Estates, which is currently going through the planning approval
process in Fort Collins. The Fossil Creek Estates Site Access
Study was. submitted in October 1993. The Arapahoe Farm Site Access
Study was submitted to the City on April 1, 1991. An amendment for
Arapahoe Farm Townhouses was submitted October 23, 1993. There are
no other major developments proposed which would cause a dramatic
increase in traffic. in this area in -the .short range future. Should
a major development occur which nullifies this methodology, then
the traffic study for that development should reflect both the
proposed development and the projections as reflected in this site
access study. In the case of traffic studies for future
developments, - the -traffic projections in this site access study
become part of the background traffic for that' development.
C. Trip Distribution
Trip distribution was determined based upon an evaluation of
attractions for home -based productions and -the most likely routes
available to travel to those attractions. The directional
distribution of the approaching and departi-ng traffic generated at
the proposed.uses is a function of..:
Geographic location within the City of Fort Collins
Location of employment and business centers which are likely
to attract trips -from this area
- Access to the site.
Figure 4 illustrates; the trip distribution`percentages used in the
subsequent traffic assignments.
`D.; 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.
netwK. 1ork. The network consisted of Harmony Road, Shields Street',
3
II - � I CREST ROAD =
Parcel 2
East
11 D.U.
L.. _.. _ ..�..
00
1� • PARK SITE
.
1 ;
a PaW SI 2 1 SCHOOL _
1' 1 D. :.
Z
1 � B
1
HINSDALE •
ORI�R
1'
I,, sr
1
44Z
NO SCALE
Figure 3
I
Table
1
'
Existing
Peak Hour Operation
_
Level
of Service
Intersection
AM
PM
'
Shields/Harmony (signal)
B
B
Harmony/Hinsdale (stop sign)
NB LT
E
E
'
NB RT
D
A
WB LT
B
A
'
Harmony/Crest (stop sign)
-
NB LT
E
E
NB RT
C
A
WB LT
B
A
Tab 1 e..2
'
Trip Generation
Daily
A.M.
Peak
P.M.
Peak
'
Land Use
Trips
Trips
Trips
Trips
-Trips
in
out
in
out
'
Parcel 1
North --of Ditch - 41 DU -
390
8
23
27
15
'
South of Ditch - 34 DU
325
6
19
22.
12
2
,
-
•Parcel
Access to Hinsdale -
180
4
10
12
7
19 DU
'
Access to Cr`e.�t - 11 DU
105
2
6
7,
-4
Total
1000
20
58,
68
38.
No Text
N � N
II.. Existing Conditions
Peak hour intersection counts. were obtained in 1992 and in
October 1993. These counts are shown in Figure 2.: Raw data is.
shown .in Appendix A. Since the peak hour of a residential
development occurs at the same time as the peak hour of the
streets.., counts were obtained at 7:30-8:30 AM and.-4:30-5:30 PM
These times do not correspond with peak times for elementary
schools. However, analysis of the morning counts and conversations
with the count technician indicate that some traffic between 8:00
and 6:30 AM was school related traffic. Traffic was not counted
at the Harmony/Crest intersection. The traffic shown at this
intersection was. estimated using trip generati-on and trip
distribution for .the existing dwelling units along .Crest Road.
With the existing control at.the key intersections, the peak
hour operation is shown in Table 1. This operation is deemed
acceptable, except for minor street left -turns from Hinsdale and
Crest. Acceptable operation is defined as level of service D or -
better. Descriptions of level of .service from the 1985 Highway
Capacity Manual :for signalized and unsignalized intersections are
provided in Appendix B. Calculation forms 'for the operation shown
in Table 1 are provided in Appendix C.
I.II. Proposed Development
Colorado Land Source, Ltd. is proposing to develop 105
dwelling unit lots on a parcel of land south of Harmony Road and
on both sides of Hinsdale Drive. A schematic site plan is shown
in .Figure 3. Eleven lots of the McCraw Site will access Crest Road
to the east. In addition, the City of Fort Collins may build a
park bordering the McGraw Elementary School on three sides. It is
expected that the park .and school uses will be complementary,
sharing parking facilities on the school site and the park
providing recreational uses for school functions. Typically,
during the school hours and peak hours of the street, the activity
at the park will be minimal. Two .future years were selected for
analysis: The short range future was 1995 and .the long range
future was 2010. It is assumed that this development will be built
out by 1995.
A. Tr:i:p Generation
Trip generation estimates for the McGraw Site uses were
obtained: from Trip Generation, 5th Edition, ITE. Table 2 shows
trip generation on a daily and, peak hour basis.
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SITE LOCATION Figure 1
I. Introduction
Colorado. Land Source,_ Ltd, is proposing a residential.
development located on both sides of Hinsdale Drive and south of.
Harmony Road in Fort Collins„ Colorado. .The site location is shown
in Figure 1. This is known as the McGraw Site, named for its,..
proximity to the recently completed McGraw Elementary School. Most
of the 105 dwelling units will access Hinsdale Drive. However,
there are eleven dwelling units along Crest Road to the east.. The
roads which will be impacted by this development are Harmony Road,
Hinsdale Drive_, and Crest Road. The key intersections that will
be impacted are: Harmony/Shields, Harmony/Hinsdale, and Harmony/
Crest Road.
Harmony Road is classified as a major arterial on the Fort
Collins Master Street Plan. The. segment between Shields Street and
College Avenue= is three lanes with a rural cross section on the
south side and curb and gutter on t-he north side. Harmony Road
widens to four lanes with an urban cross section from the railroad
tracks to College Avenue. The segment just north of Front Range
Community College is striped as, one` eastbound lane and one.
westbound lane. There is signal control at -the Harmony/Shields,-=
Harmony/Mason, and Harmony/College intersections. All other
intersections are stop sign controlled with Harmony Road receiving
the right-of-way. In the future, Harmony Road is expected to have
a four lane cross section with turn lanes at appropriate locations.
Harmony Road is posted at 40 mph in this area.
Shields Street is classified: as. an arterial on the Fort
Collins Master Street Plan. It is a street of varying width south
of Drake Road. It is proposed to have a four lane urban cross
section with turn lanes at appropriate locations in the future.
It is posted at 35 mph near Harmony„Road.
Hinsdale Drive is not classified and is considered to be a
local street. It has recently been completed from the Clarendon
Hills development to Harmony Road..: It is two.lanes wide, except
at Harmony Road where there are northbound right- and left -turn
lanes-.
Crest Road is a local street serving B dwelling units. It has_
a rural cross section with` one, lane in each direction. It is. a..
cul-de-sac street.
Land uses .in this area are .residential, school, and open
space. Residential uses are east, north,'and south of the McGraw
Site. The Front Range Community College is .west of the site;
McGraw Elementary School and a future park is ;surrounded by this
residential deve..lopment.. Poudre School District stores some school
buses in this'area.
1
NOV 17 1993
JBENGMEEWG,=-
MCGRAW SITE
SITE ACCESS STUDY
FORT COLLINS-, COLORADO
NOVEMBER 1993
Prepared for:
Colorado Land Source _
085 East Mineral: Circle, Suite 200,
Englewood, CO 80112
_Prepared by*
MATTHEW J. IIELICH, P.E.:,
3413 Banyan Avenue
Loveland, CO 80538
Phone: 303-669=2061