HomeMy WebLinkAboutOVERLAND RIDGE (SIENA) PUD - PRELIMINARY - 39-95 - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDY (3)cil
Table D - Short and Long Term Conditions With Project Traffic
Intersection Level of Service
Intersection
1997 Short Term
AM PM
2015 Long Term
AM PM
West Elizabeth/Rocky Road (One Way Stop)
Southbound Left
A
B
A
B
Southbound Right .
A
A
A
A
Northbound Left
A
A
A
B
Northbound Right
A
A
A
A
Eastbound Left
A
A
A
A
Westbound Left
A
A
A
A
Deerfield/Clearview (No Traffic Control) A A A A
(with Northbound Deerfield Stop Controlled)
Taft Hill/West Elizabeth (Signal) D D D D
Conclusions
This study assessed the traffic impacts of the Overland Ridge P.U.D. on the short range (1997) and
long range (2015) street system. As a result of this analysis, the following is concluded:
• The proposed 116 dwelling units will generate approximately 1,100 daily trips - 85 a.m. peak
hour trips, and 120 p.m. peak hour trips.
• It is expected that 95% of the project traffic will utilize the West Elizabeth/Rock Road entrance
and 5% via the Deerfield/Clearview secondary access.
• Based on the intersection level of service analysis, excellent levels of service will prevail at the
intersections of West Elizabeth/Rock Road and Clearview/Deerfield under both short term 1997
and long term 2015 conditions with project traffic. Acceptable levels of service will be achieved
in the 1997 and 2015 conditions with the addition of left turn phasing at West Elizabeth and Taft
Hill.
Balloffet & Associates, Inc. Overland Ridge PUD Traffic Impact Analysis
August 30, 1995 Page 12
Figure 7
Elizabeth Street
Long Range 2015 Plus Project Traffic Volumes
a
R
O
Q
0
m �
+—6/25
1001300
f— 21rr1
116 -
k200/230 —►,
Co
R 1/4---+ MS�o
0)
Ln
Project Site b
x f— 1/2
' 9 5/37
1/1
v1 �
N c7
O
V
fO gR O
n It CD 50/120
�— 654
70/1
7a1ss
138/143
443/432 —►
143/148
_ N N N
n 10 N
Clearview Avenue
— m
a
� m
2
`m
O
> O
~
84/92 arWpm Peak Hour Turn Volumes
40/33
BALLOFFET and Associates, Inc.
EL1Z-7.al W895
4
NOT TO SCALE
Balloffet & Associates, Inc. Overland Ridge PUD Traffic Impact Analysis
August 30, 1995 Page 11
Figure 6 Short Range 1997 Plus Project Traffic Volumes
Elizabeth Street
�a
0
¢
O
O+ ¢
_ L 6/25
4— 85/250
r-I f— 21171
1/6
=�
170/190 ----0;
3 1/4 � im M g
f N
A Project Site
f— 1/2
5/37
2/1
1/1
N CO
CO
O
O
—8CD N
v
175 w
Lao/1oo
4�.4
0/1599
60/155
118/123398/377
123/128
0Go
�No
C/earvieW Avenue
m a
h
0c
¢
�
v
�v
m
Q
m m
p
i-
Q
6a/�
ao/33 —� am/pm Peak Hour Turn Volumes
33
BALLOFFET and Associates, Inc.
ELIZ-6.al 8/28/95
4
NOT TO sc,LLE
Balloffet & Associates, Inc. Overland Ridge PUD Traffic Impact Analysis
August 30, 1995 Page 10
Project Impacts
The a.m. and p.m. peak hour trip generation rates for the proposed residential units are based on
the Institute of Transportation Engineers 5th edition of the Trip Generation Manual. The trip
generation rates and resulting trip generation for the proposed project are presented in the
following table.
Table C - Project Trip Generation
AM AM AM
PM
PM
PM
UNITS ADT IN OUT TOTAL
IN
OUT
TOTAL
Trip Generation Rates DU 9.55 .19 .55 .74
.66
.35
1.01
Trip Generation 116 1,108 22 64 86
77
42
118
The trip distributions for the proposed project are based in part on the location of the project within
proximity to the City of Fort Collins, access to the arterial street system, and existing traffic counts.
Based on these relationships it was estimated that approximately 95 percent of the project traffic
would travel to West Elizabeth and 5 percent to the southerly entrance via Deerfield and Clearview.
Of the 95 percent traveling to/from West Elizabeth, 90 percent would travel to and from the east to
the intersection with Taft Hill Road, where it is estimated that 20 percent would turn to/from the
north, 20 percent to/from the south and the remaining 50 percent continue to/from the east on West
Elizabeth.
The resulting 1997 short term plus project and 2015 long term plus project traffic volumes are
presented in Figures 6 and 7 respectively. The short and long term plus project peak hour levels of
service for the intersections under investigation are presented in Table D. As can be seen, acceptable
levels of services prevail at all three intersections in both the a.m. and p.m. peak hour conditions with
the addition of project traffic.
Balloffet & Associates, Inc. Overland Ridge PUD Traffic Impact Analysis
August 30, 1995 Page 9
Figure 5
Elizabeth Street
v
m
c
crn
6/25
4 100/300
>200/230�
r. 3:
F
Project Site
".:............ :: s.x s<s 5/37
r
4-_'�`' I
0
0
Long Range 2015 Traffic Volumes
v
n Co
+--- 50/120
4.I
� 70/165
125/135 �
410/410 —►
r►
130/140 ---+
pp
O N N
V N
W,
C:learview Avenue
m a
f'
m
m
Cr
m
O Fm
84/92 arr✓pm Peak Hour Turn Volumes
40/33 -�
BALLOFFET and Associates, Inc.
ELIZ-5.al 8/2895
4
NOT TO SCALE
Balloffet & Associates, Inc. Overland Ridge PUD Traffic Impact Analysis
August 30, 1995 Page 8
Figure 4
Elizabeth Street
v
0c
6/25
4— 85/250
4J[IN.
H%
116�
170/190 —►;
Project Site
E x: s' s 5/37 sz:: w..:as x<:; . . f
Short Range 1997 Traffic Volumes
'Ln
-q
OD (0
L 40/100
4 135/560
60/155
5/5 - 36�
36 5/355 —►
110/120
V 00
�'�
LnDo
C/earview Avenue
O
v a
m
m
O
� O
cc
~
84/92 ---+ arr✓pm Peak Hour Turn Volumes
40/33 --i,
BALLOFFET and Associates, Inc.
ELIZ_4.ai 8/28/95
4
NOT TO SCALE
Balloffet & Associates, Inc. Overland Ridge PUD Traffic Impact Analysis
August 30, 1995 Page 7
Background Traffic
In addition to evaluating traffic in relationship to the existing conditions, this study evaluates the
i impact of the project traffic during the short term 1997 conditions and the long term 2015
conditions. The traffic projections from the North Front Range Regional Transportation Plan,
October 1994 were used to develop the short and long term horizon years. In addition to the
Regional Plan, traffic from other approved developments was added to the background conditions.
The projected a.m. and p.m. peak hour intersection turn movement volumes without project
traffic for 1997 and 2015 are presented in Figures 4 and 5, respectively. The resulting level of
service analysis for the short and long term conditions without the project,traffic is presented in
Table B. As indicated, acceptable a.m. and p.m. peak hour level of service will prevail in 1997
and 2015, assuming that left turn phases are added to the West Elizabeth and Taft Hill
intersection.
i
1
1
1
1
1
Table B - Short and Long Term Conditions Without Project
Intersection Level of Service
Intersection
West Elizabeth/Rocky Road (One Way Stop)
Eastbound Left
Southbound Left
Soutbbound Right
Deertield/Clearview (No Traffic Control)
Taft Hill/West Elizabeth (Signal)
1997 Short Term 2015 Long Term
AM PM AM PM
A A
A A
A A
A A
A A
A A
A A
A A
D D
D D
Balloffet & Associates, Inc. overland Ridge PUD Traffic Impact Analysis
August 30, 1995 Page 6
Figure 3
Elizabeth Street
a
c
u
C
rn �
61/25
4 621180
1/6�
0 34/152 —►;
.j
r
Project Site
5/37
u
/- -:.: R
�$2
0
IT
1995 Existing Traffic Volumes
Ln
rorn
�a
m (0
L 34/93
4-69/352
61131
i-- 46/131
84/92 -
215/246
I
83/95 -
o o
ci °D
C/earview Avenue
a o cc
c a
n m �
O Om ti
0133 � �
4arr✓pm Peak Hour Turn Volumes
o/33
BALLOFFET and Associates, Inc.
ELIZ3.al 8/28195
4
NOr TO SCALE
Balloffet & Associates, Inc. Overland Ridge PUD Traffic Impact Analysis
August 30, 1995 Page 5
v
West Elizabeth is an east -west facility and designated an arterial on the Fort Collins Master Street
Plan. In this area, West Elizabeth provides for two lanes of travel. West Elizabeth is
unimproved on the south side with no curb, gutter, or sidewalk. Similarly, West Elizabeth is
unimproved on the north side, east of Rocky Road, but does have additional pavement width,
curb, and sidewalk west of Rocky Road.
The intersection of West Elizabeth and Taft is controlled by a traffic signal. The intersection of
West Elizabeth and Rocky Road is controlled by a stop sign for southbound Rocky Road traffic.
Existing August 1995 a.m. and p.m. peak hour intersection traffic counts were conducted for this
analysis at the intersections of West Elizabeth/Rock Road and Deerfield Drive/Clearview. Peak
hour traffic counts for the intersection of West Elizabeth and Taft Hill Road were from previous
traffic studies prepared for developments within the general study area. The existing traffic
counts are presented in Figure 3.
Intersection level of service analysis was performed at the three intersections under investigation.
Level of Service (LOS) is a grading system as to how well an intersection operates, ranging from
"A," which. is excellent, to "F" for failure. LOS of "D" or better is the City of Fort Collins
threshold for being acceptable.
The existing levels of service for the intersections analyzed are based on the 1985 Highway
Capacity Manual and are presented in Table A. The calculation sheets for this analysis are
presented in the appendix of this report. As can be seen, acceptable levels of services exist for both
the a.m. and p.m. peak hour conditions.
Table A - Existing Intersection Level of Service
Level of Service
Intersection
AM
PM '
West Elizabeth/Rocky Road (One Way Stop)
Eastbound Left
A
A
Soutltbound Left
A
A
'Southbound Right
A
A
Deerfield/Clearview (No Traffic Control)
A
A
Taft Hill/West Elizabeth (Signal) D D
Balloffet i£ Associates, Inc. Overland Ridge PUD Traffic Impact Analysis
August 30, 1996 Page 4
Figure 2
11
i!Xw«•
BAMSTINSON
ID WAIMIM111011
MOUNTAW
SUIXXVISM
uawc
Site Plan
RHO= G. KrZELFEM
SUBDIVISION MAIN BAMM
WCUM CW.W ar AMaR
UwAe
Nl
IN UP in M
Is
is IN IN 19 IN
" -0'4� v
U
0
0
OPEN SPACE
- CLIAMIW Ara
UP
•
n a
....... ........
.......
..
4
NOT TO SCALE
BALLOFFET and Associates, Inc.
EL17-2.al a/28/95
Balloffet & Associates, Inc. Overland Ridge PUD Traffic Impact Analysis
August 30, 1995 Page 3
Figure I Vicinity Map
I : I jl�
�I
-i :III _h� I �ri I r�s-a
Iw�UiOE
• II�' ` 1 I1111 �C
•. IC IIII
r� ML
:, J �� �� I111 •�1
RP
\ I G RMP
rp I ram^ = IDr
L=BPL I
i
_ �..�J� 11. 1 1 I I• l i
I l BL
imi s
' ` ..� III 111 1
�(� � � .�--'.
J III \ III IIIII
II
I ` I111I
RL1 III •�'-� I IIII
IIIII 1 i:l II\ CE =J
RF I r � iiu it ==---{F^—i
9 , � 1 1 1 ' •������ i t
Cad a�t `eJO r I L.
Li
CIE
—^•,I�_ c I TliaJ"6�oo I � • rIr
' •urY � � �� I � \ I ' : I
U or,0 I I
11
A.
F pJ
r
I
NOTTOSCALE
Balloffet & Associates, Inc. Overland Ridge PUD Traffic Impact Analysis
August 30, 1995 Page 2
Overland Ridge PUD Traffic Impact Analysis
The following traffic impact analysis is for the proposed Overland Ridge PUD residential
development located south of West Elizabeth Street and east of Overland Trail in the City of Fort
Collins. As will be presented, the analysis evaluates the impacts of the proposed project traffic
when added to short term year 1997 forecasts and long term 2015 forecast traffic conditions at
the intersection of West Elizabeth/Rocky, West Elizabeth/Taft Hill Road and Deerfield
Dr./Clearview Avenue. Based on this analysis, no traffic impacts were identified and the inter-
sections evaluated will operate at acceptable levels of service, both in short term 1997 and long
term year 2015 conditions.
Project Description
The project site is located south of West Elizabeth Street and east of Overland Trail as can be
seen in Figure 1. Access to the site is primarily via the intersection of West Elizabeth and Rocky
Road. Secondary access will be via the extension of Clearview Avenue at Deerfield Drive. The
site is 29 acres of pasture ground and one home.
The northern boundary of the property borders West Elizabeth. The southern boundary has an
intersection at the southeast corner formed by Deerfield Drive and Clearview. The remaining
southern edge is bordered by a dry detention pond, an additional pond that retains water year-
round and a soccer field that is part of Overland Park. The eastern boundary is bordered by the
backyards of sixteen homes on Timber Lane built in the late 1970s. The western boundary is
bordered by unimproved ground and a portion of Overland Park.
The proposed project site plan is presented in Figure 2. The proposed project consists of 116
single family lots which equates to 3.8 dwelling units per acre.
Street access on West Elizabeth will be via the southerly fourth leg of the intersection of West
Elizabeth and Rocky Road. A second point of access will be via the creation of a "T"
intersection, where Clearview enters the project site at its current 90 degree turn with Deerfield.
Conventional design would indicate that Clearview would be uncontrolled approaching and
exiting the site and northbound Deerfield would be stop sign controlled. A third point of access
would be accommodated near the southeast corner of the project where the continuation of
Pleasant Valley will dead end. A temporary cul-de-sac will provide turnaround capability at the
western border where Pleasant Valley will dead end.
Existing Setting
As indicated, the proposed project will be located south of West Elizabeth with primary access
via the southerly fourth leg of the intersection of West Elizabeth Street and Rocky Road. Land
uses in the area are primarily residential with some vacant parcels.
I
Balloffet & Associates, Inc. Overland Ridge PUD Traffic Impact Analysis
i August 30, 1995 Page 1
i
I
f TABLE OF CONTENTS
I
PAGE
Project Description................................................... .1
Existing Setting ..................................................... 1
Background Traffic .................................................. 6
Project Impacts ..................................................... 9
Conclusions...................................................... 13
I FIGURES
1. Vicinity Map ............................:....................... 2
2.
Site Plan .......................................................
3
3.
1995 Existing Traffic Volumes ........................................
5
4.
Short Range 1997
Traffic Volumes .....................................
7
5.
Long Range 2015
Traffic Volumes .....................................
8
6.
Short Range 1997
Plus Project Traffic Volumes ...........................
11
] 7.
Long Range 2015
Plus Project Traffic Volumes ...........................
12
TABLES
A. Existing Intersection Level of Service ................................... 4
' B. Short and Long Term Conditions Without Project Intersection Level of Service ...... 9
C. Project Trip Generation ............................................ 9
D. Short and Long Term Conditions With Intersection Level of Service 13
Appendix: Level of Service Analysis
August 30, 1995
Overland Ridge PUD Traffic Study
Prepared for:
John Minatta
Prepared by:
Balloffet and Associates, Inc.