HomeMy WebLinkAboutPOUDRE SCHOOL DISTRICT, EAST PROSPECT ROAD SERVICE FACILITY - ODP - 44-08 - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYo The project is feasible from a traffic engineering perspective and
improves the surrounding roadway network.
Statement of Adequacy: The transportation facilities will be adequate and available to
serve this development as contained in the Larimer County Urban Area Street Standards.
All applicable LOS standards will be met since all transportation facilities are in place or
will be in place upon issuance of a certificate of occupancy..
28
Poudre School District/Larimer County Maintenance Faciliiv ELB Engineering, LLC
Transportation Impact Sludy 5401 Tavlor Lane
December 2008 Fort Collins, CO 80528
IX. Conclusion
This TIS assessed the impacts associated with the Poudre School District/Larimer
County maintenance and school facility at the intersection of Prospect Road and
County Road 5 located in Fort Collins, Colorado. Based on the analyses,
investigations, and findings documented in the various sections of this
Transportation Impact Study, the following can be concluded:
Short Term:
o Current operation is acceptable at all of the key intersections.
o The short-term project can expect to generate approximately 97 daily trip
ends, 13 morning peak hour trip ends, and 15 afternoon peak hour trip
ends.
o An auxiliary eastbound left turn lane will be required into the site at
McLaughlin
o Traffic LOS for the short term build scenario is acceptable based on the
LUCASS standards.
Mid -Term:
o The mid-term project can expect to generate approximately 913 daily trip
ends, 131 morning peak hour trip ends, and 121 afternoon peak hour trip
ends.
o New traffic signal will be required in the future at Prospect/Eastern
Frontage Road.
o The interchange is assumed_ to be reconstructed_ by this time frame by
other developments.
o Auxiliary eastbound left turn lane will be required at the intersection of
Prospect/Meadowaire.
o The project will be required to construct their half of arterial
improvements on Prospect.
Long -Term:
o The long-term project can expect to generate approximately 2128 daily
trip ends, 529 morning peak hour trip ends, and 233 afternoon peak hour
trip ends.
o In terms of multi -modal LOS, the project will not meet the standards for
bikes, pedestrians, or transit in the short or mid term horizons. It is likely
that the project will meet the standard in the long-range horizon when
additional development occurs in the area.
o The project will be required to construct their half of arterial
improvements on CR5.
o New traffic signals are likely to be needed at Prospect/CR5 and
CR5/Mulberry.
27
Poudre School District/Larimer Counh; Alaintenonce Facility ELB Engineering, LLC
Transportation Impact Study 5401 Tavlor Lane
December 2008 Fort Collins, CO 80.528
There are no bike lanes on either Prospect or CR5 at this time. As the property develops
and additional properties develop in the area, bike lanes will be added to the arterial
system.
C. Transit Level of Service
According to the L UCASS Multimodal Level of Service Manual, transit level of service
for the City of Fort Collins is based on the routes and service levels planned for the year
2015. However, the Manual was written in 1997 and is significantly outdated and no
longer considered valid. The transit LOS analyses are therefore based on the 2010
Transfort Strategic Plan. There is no transit service in the area nor are there any plans
by Transfort to provide service to the property in the short-term or long-term horizon.
26
Poudre School DistrictlLarimer County _1laintenance Facility ELB Engineering, LLC
Transportation Impact Sludv 5401 Taylor Lane
December 1008 Fort Collins, CO 80528
C U'R'li�
r;,lbarry at Arrowhead 14 ._
%,4eL:
Slnnard
,.,-
E Mulb" SSowyor
�•
kr
-u r
r
U®� an G n'..paC� 41
• Earn
7
46
serer;
:'a" Park
Figure 12: Multimodal Evaluation Area
A. Pedestrian Level of Service
The project will construct sidewalks adjacent to the property that meet the city standards.
However, the area is primarily rural and there are no sidewalks within the evaluation
area in which to provide connectivity. Over time, with additional development in the
area, there will be connectivity.
B. Bicycles Level of Service
The surrounding street system was evaluated for compliance with the City of Fort
Collins bicycle level of service standards. Acceptable LOS for bicycles is considered C.
25
nOrfflTe .SCl90Ol DJSIT'7CZ LZJ'iriifl'�t iL'.+i R`E,,.. ._� .�'1r`, B En Qr7leerli7,Q, LLC
Transportation impact Study.W1 Tavlor Lane
December 2008 Forr (Collin, CO 80528
o Signalization of the eastern frontage road and auxiliary lane
improvements.
o Arterial improvements along Prospect Road, and the site's
frontage
• Long - Term
o Arterial improvements along CR 5 adjacent to the site.
o Signalization of Mulberry/CR 5 and Prospect/CR 5 as well as
auxiliary lane improvements at the intersections.
VIII. Multi -Modal Evaluation
Section 4.5.3 (B) of the Larimer County Urban Area Street. Standards requires that
projects undergo a level of service analysis for alternative modes of transportation. The
modes of transportation that must meet LOS standards are bicycles, and pedestrians.
Transit service LOS must also be analyzed at the time of development review.
However, transit LOS is not part of the Adequate Public Facilities test. The area of
interest for the alternative modes of transportation is shown below in Figure 9. The
area of the project is considered a "low density mixed use" area based on the City
Structure Plan and for purposes of these analyses.
24
Poudre School District/Lariruer Cowin- lfaintenance FacilitV ELB Engineering, LLC
Transportation Impact Study 5401 Taylor Lane
December 2008 Fort Collins, CO 805 28
VII. Improvements
A. Traffic Signals
Traffic signals are never installed until Warrant is satisfied under the Manual on
Uniform Traffic Control Devices, 2000. During the course of a preparing a
transportation study, it was determined that the new potential traffic signals would be at
the following intersections:
• Prospect/Eastern Frontage Road in the mid-term scenario
• Prospect/County Road 5 in the long-range scenario
o CR5/Mulberry in the long-range scenario
B. Auxiliary Lanes/System Improvements
A review of the LUCASS requirements regarding auxiliary lanes was undertaken as part
of this study. The following is the result of said analyses:
• Short -Term
o In phase I, year 2010, an eastbound left turn lane on Prospect at
McLaughlin Lane should be constructed into the site. The left
turn lane should have at least 75 feet of storage. Total lane
length should be 315 feet.
• Mid - Term
o By the year 2015, phase II, an eastbound left turn lane should be
constructed at Meadowaire with a minimum 150 feet of storage
and a total land length of 315 feet.
o The interchange needs to be reconstructed by the surrounding
developments to include a 4-lane overpass, including right and
left turn lanes. Phasing of the traffic signals should also include
protected -permissive left turns.
23
Poudre School District/Laruner County 1laintenance Facility ELB Engineering, LLC
Transportation Impact Study 5401 Taylor Lane
December 2008 Fort Collins, CO 80528
Table 6 - Year 2028 - Capacity Analysis
TOW Traffic •
Yew=8
aM
PM
Intersection
Movement
LOS
Delay
(sectvehicle)
LOS
DeW
(sedveldde)
ProspeclANestem Frontage Road
rafRc Signal control)
L
C
31.0
E
73.1
T
B
18.6
E
79.6
R
A
8.0
B
13.0
L
D
43.0
F
90.6
T
B
10.9
D
37.6
R
C
27.3
C
25.9
NB L
D
1 46.0
F
52.2
B T/R
D
48.2
C
92.8
SB L
T
D
47.4
F
114.8
D
44.5
D
38.6
SB R
D
46.4
D
47.4
OVERALL
C
210
E
62.2
Prosped/SB Ramps
(Traffic Sgrd control)
EB T
C
30.7
C
29.4
EB R
A
0.8
A
0.2
EnG L
C
25.6
D
36.5
T
C
21.9
C
22.7
L
D
39.8
E
57.6
R
A
0.3
A
1A
L
B
19.4
C
20.5
Prospect/NB Ramps
TOP
EB L
E
65.8
D
51.5
EB T
C
28.2
B
17.0
T
E
76.5
D
41.6
R
A
0.1
A
0.1
B L
D
36.8
D
48.5
NBIR
A
0.3
A
0.1
OVERALL
D
38.4
D
35.5
Prospect/Eastern Frontage Road
TRAFFIC SIGNAL
EBL
D
39.9
D
53.3
EBT
C
21.3
B
17.9
EB R
B
17.6
B
13.0
L
C
34.2
D
3B.8
WB TIR
D
52.8
D
52.6
B L
C
27.8
D
47.4
B T/R
C
22.6
C
32.3
L
C
22.8
D
37.5
T/R
D
36.2
D
46.7
D
35.8
D
41.4
raspeXMcLaughlin Lane
OP
L
A
9.6
A
8.7
L
A
8.5
A
8.9
B APPROACH
D
29.8
C
22.1
L
F
622
D
27. 01
R
B
12
B
10.8
A
4.8
A
1.8
rospeWMeadowaire Drive
OP
L
A
9.3
A
8.7
L
A
8.9
A
8.9
B APPROACH
C
23.1
C
18.9
L
D
31.8
C
23.
R
B
11.9
B
11.1
A
1
A
0.81
rospec tlCounty Road 5
TRAFFIC SIGNAL
L
B
14.1
B
15.3
T/R
B
13.1
B
15.3
L
B
11.9
B
12.1
T/R
B
13.1
B
13.1
BL
A
5.5
A
7.9
B L
A
4.8
A
6.0
B R
A
4.6
A
5.1
L
A
4.6
A
5.2
T
A
4.8
A
5.4
R
A
4.6
A
5.3
VF_R/1LL
B
11.4
B
11.6
Mulberry/County Road 5
OP
T
R
L
R
B L
BR
VERALL 1
A
A
A
C
B
B
B 1
7.0
5.8
5.9
20.5
14.7
13.9
15.1
B
A
A
B
B
B
B 1
16.5
6.4
8.2
10.3
12.8
11.4
13.
CR 5/ Sctool Drop off lane
OP
L
B
10.8
B
10.
R
A
9.3
A
9.
BL
A
7.6
A
7.
A
1.2
A
0.
22
Poudre School District/Larimer County Maintenance Facilitv ELB Engineering, LLC
Transportation Impact Study, 5401 Taylor Lane
December 2008 Fort Collins, CO 80528
td
0
(,f, % y'
�r 3� 6` _1
G AFNLP
Table S: Year 2015 - Capacity Analysis
fteftouirWTiraffic-
Yeerzas
Toraf- rea
Ms
AM
PM AM
PM
Intarseebm
Mcvanent
LOS
Delay
(sedvehk4e)
Los
Delay
(sedvehide)
I LOS
Delay
(sdvehide)
LOS
Delay
(seduehlea)
PoospectMestern Frontage Road
raft Signal mieol)
L
C
30.1
D
35.81
C
1 30.3
D
36.
T
B
11.3
B
14.61 B
1 11.3
B
15.
R
A
8.6
A
8.81 A
1 8.5
A
9.
L
B
20.0
B
17.41 C
1 20.8
B
19.
T
C
30.9
C
25.81 C
1 32.6
C
22
R
D
54.4
C
3231 E
1 58.6
C
31.
B L
C
23.2
C
23. C
23.5
C
22
T/R
C
23.1
C
23.1 C
23.6
C
22
L
T
D
38.0
D
44. D
39.6
D
42
C
30.0
C
22 C
MO
C
22
R
C
24.7
C
24. C
24.8
C
24.21
VERALL
B
28.0
C
24. C
29.1
C
23.81
Pmsp-tfSB Ramps
(Traffic Signal control)
T
C
33A
D
37.
C
33.2
D
39.
R
A
0.6
A
1. A
0.6
A
1.
L
8
15.0
C
23.1 A
8.6
T
B
18.8
B
14. 8
12.3
B
12
L
B
17.3
8
19.1 B
18.5
B
16.
R
A
0.3
A
0. A
0.3
A
0.
VERALL
B
15.5
8
14. B
12.7
B
14.
PMspeWNS Ramps
OP
_
L
0
527
C
33.
D
50.0
E
621
T
8
17.8 B
17. C
27.0
C
35.
T
C
20.1 D
49 D
420
D
45.1
R
B
121 O
29.1 C
22.6 B
11.
B L
C
24.3 D
35. C
28.4 D
35.
BIR
A
9.8 B
14. B
11.1 B
13.
VERALL
C
21.6 C
34. C
29.8 0
37.
TRAFFIC SIGNAL
em Fronage Road[8L
.-
0
44.7
E
58.
D
45.3
E
7231
B
11.9 B
14. B
11.1 C
27.01
D
37.5 B
13. C
34.6
B
11.9 8
14. B
11.2
8
128 8
15.1 8
122 B
14.1
8
16.7 C
25. B
17.7
0
15.1 B
13. B
15.8
B
15.1 B
13. B
15.9
C
20.8 8
18. C
21.9LL
C
25.5 C
27. C
25.7PmqwcWAdAughgn
Lana
STOP
ROACH
I A
0.01
A
0.
0.2
11.1
APPROACHI
A
1 0.2 A
8 APPROACH
I B
1 10.61 8
VERALL
L
L
BAPPROACH
SS L
SB R
VERALL
A
I A
0.3
1 0.0
A
A
0.
0.1
O.
11.1
A
A
B
B
A
A
7.7
7.7
11.6
12.8
9.8
1.2
A
A
B
B
B
A
8
7.
121
14.1
1O
0.
PfcspecVlvlead�re Drive
OP
EB 11R
TA-
I A
1 0.21
NB LIR
I A
1 10.61
VERALL
E8 L
L
N8 APPROACH
L
R
VERALL
EB APPROACH
A
B
0.3
13.6
A
C
0.
18.
A
B
8
A
A
C
01
A
8.
7.71 A
128 B
14.9 B
10.1 B
1.7 A
15.8 C
7.
12
1 1A 41
IG61
1.
19.
Road 5
OP
APPROACH
8
13.8
C
16.
B
1 14.0
C
16.71
NB APPROACH
A
5.2 A
4.31 A
1 5.2 A
4.
APPROACH
A
0.4 A
oA A
1 0.4 A
0.
VERALL
A
8.7 B
10.2j A
1 9.7 B
11.
ulbenylCounty Road 5
STOP
L
NB APPROACH
VERALL
A
C
A
8.1
22.7
1.5
A
C
A
9.1
23.1
2
A
C
A
8.1
22.8
1 1.5
A
D
A
9.1
28.1
2
21
Poudre School District Larimer County _Maintenance Facilih ELB l Wineering, LLC
Transportation Impact Studv 5401 Tavlor Lane
December 2008 Fort Collins, CO 80528
further analysis of the interchange may be required in determining the exact interchange
configuration required to achieve acceptable LOS.
Additional roadway improvements are also required near the site and will be discussed
in the following section of the report.
Table 4 Year 2011- Capacity Analysis
Background Trot& - Year 20f 1 I Total - Year 20ff
AM
PM AM
PM
Intersection
Movement
LOS
Delay
(sedvehice)
LOS
Delay
(sedvehide)
LOS
Delay
(sedvehide)
LOS
Delay
(sedvehide)
Prospect/Westem Frontage Road
(Traffic Signal condr()
EB L
B
18.4
B
11.
B
19.0
B
10.
EB T/R
A
6.3
C
33.51
A
6.4
C
32.
L
A
6.9
D
39.
A
6.8
D
39.
WB T/R
C
23.0
C
28.
C
23.2
C
27.51
NB L
C
32.8
C.
25
C
32.8
C
26.
NB T/R
C
32.6
C
25.
C
32.6
C
26.1
B L/r/R
C
32.8
C
26.
C
32.8
C
27.
OVERALL
B
17.5
C
30.
B
17.7
C
29.
Prospect/SB Ramps
(Traffic Signal control)
-
EB T
B
12.8
C
27.
B
12.9
C
28.
EB R
A
0.3
A
0.
A
0.3
A
0.
L
A
5.0
A
7.
A
5.0
A
7.1
T
B
12.1
B
18.
B
12.2
B
18.
SBL
C
21.5
B
14.
C
21.7
B
14.
BR
A
0.2
A
0.11
A
0.2
A
0.1
OVERALL
B
8.1
B
12.01
A
8.2
B
12.
Ramps
TOP
EB UT
C
24.8
C
33.
C
24.3
D
35.
T/R
C
22.0
B
16.
C
22.1
B
16.
NB L
C
20.5
C
20
C
21.6
C
20.
NBIR
A
9.2
B
12
A'
9.6
B
12.
OVERALL
C
21.6
C
24
C
22.2
C
25.1
sped/Eastem Fmrdage Road
TOP
EB APPROACH
A
1.5
A
1.
A
1.3
A
1.
APPROACH
A
0.0
A
0.
A
0.2
A
0.
NB APPROACH
B
12.5
B
12.
B
13.0
B
12.
B APPROACH
B
10.4
B
10.
B
10.6
B
10.51
RALL
A
2.7
B
3.
A
2.7
B
Mdaughlin Lane
TOP
IS
EB T/R
A
0.1
A
0.1
A
0.0
A
EB L
NA
NA
NA
NA
A
7.7
A
L
NA
NA
NA
NA
A
0.1
A
WBT/L
A
0.2
A
0.
A
0.0
A
10..
SB L/T/R
NA
NA
NA
NA
B
11.3
B
NB UT/R
A
9.5
A
9.
B
9.7
B
OVERALL
A
0.5
A
0.
A
1.3
A
Prosped/Meadowaire Drive
TOP
EB L/R
A
0.0
A
0.1
A
0.0
A
WB T/L
A
0.2
A
0.4
A
0.2
A
1 0.41
NB UR
A
9.5
A
9.7
A
9.8
A
9.81
OVERALL
A
0.51
A
1 0.51
A
1 0.4
A
0.51
ProspectfCourty Road 5
TOP
EB APPROACH
B
11.6
B
1 11.31
B
1 12.7
B
11.71
WffAPPROACH
B
12.9
B
11.1
B
1 13.3
8
11.
NB APPROACH
A
5.1
A
3.1
A
1 5.3
A
3.31
B APPROACH
A
0.5
A
0.
A
0.4
A
0.
OVERALL
I A
6.7
A
6.
A
7.4
A
7.
ulbeny/Courtly Road 5
TOP
VWB L
NB APPROACH
OVERALL
iA
C
A
8.1
19.8
1.2
A
C
A
9.
21.
1.
A
C
A
8.1
20.6
1.3
A
A
9.
2.
20
Poudre Schoo! Districtl arinter County Maintenance Facility ELB Engineering, LLC
Transportation Impact Stitch, 5401 Taylor Lane
December 2008 Fort Collins, CO 80i28
VI. Traffic Analysis
Capacity analysis was performed at the key intersections for both the background traffic
as well as the total traffic for the year 2011 and 2015. The year 2028 total traffic was
also modeled and analyzed as part of this study. The analyses followed the procedures
of the Highway Capacity Manual 2000. Table 4, 5 and 6 display the results of the
analyses.
Year 2011
In the Year 2011, all key intersections continue to operate at acceptable levels of service
for both the background and total traffic models. It was assumed that by the year 2011,
the Interstate Land project and the White property had not yet developed and no
improvements to the interchange had occurred. Capacity worksheets are found in
Appendix D.
Year 2015
In the mid-term scenario, it is assumed that the available land around the Interstate had
developed and improvements were made to the interchange. As part of the analysis, the
existing geometrics of the interchange were modeled with the build -out and there were
major capacity failures at the 4-key intersections near the interchange. It was therefore
E
assumed that improvements had been made to the interchange in the analysis for the
background traffic. The key intersections met the LOS standards in the mid-term
scenario. Capacity worksheets are found in Appendix E.
Year 2028
In the long-term, the interchange begins to see capacity failures in the afternoon peak
hours. The traffic projections for the interchange are fairly consistent with the
projections used during the CDOT's EIS of the corridor. Additional improvements and
19
Pondre School DistrictlLarimer Countv;llaintenance Facility ELB Engineering, LLC
Transportation Impact.Study 5401 Tm for Lane
December 2008 Fort Collins, CO 80i28
Cq
/ o \
1010/1555 1490/14
790/900 290/310
prospect PGaJ
0' tn
C4 OC4
"n
280/300 —
400/360
1725/2000(--
2040/17
i iono 4b"
170/110
340/700
130/80
t 410 7
15110
445/:00 60/70 15110
�,./ " 535/465
120/45 50/10
—
Z
30/15
615/520
5/5 ........ ..
07/17
610/635
80
j�z q3
z 0 11 35/55 5/20
7/94 0/
i 340/900 280/220 z
860/920 640/920
35/55 75/20
475/5954 3"/475
5
515 5/5 5/5
Figure 11: Year 2025 Total Peak Hour Turning Movements (AM/PM)
18
PoudreSchool DistricIlLarimer Counl.)) Alainfenonce FacilitY, Ef B Engineering, LL C
Transportation Impact Stuciv 5401 Taylor Lane
December 2008 Fort Collins, CO 80-528
840/535
50/40
Mulberry
140/165
15115
75/125
200"90
370/360
25/25
285/585 700/445
55/55 e$ 35/25
510/58511T.--
-�:p 1165/1080
550/900_180/350
35/15
ZU260/170
445/405
250/305
942
120/45 5/25
4VjrU
50110 ft4
2330/51/35
13215/20!
-,lot OWIF
515
Pro5ped Poad J--
2 265/290 90/260
795/1205 1135/1040
5/5 4blM& 15/25
IJ2-1
165/2
120/155
4 95/41 515n40
Figure 10: Year 2015 Total Peak Hour Turning Movements (AM/PM)
rzr
1015
215/215
c 10/5
220/315
515
515
17
Poudre School DisiricIlLarilner County .,Afointenonce Facility ELB 1,.)Tineeril?Ay, 1.1,C
7'ransportalion Impact StucIv 5401 Ta , vlor Lane
December 2008 Dort Collins, CO 80.528
Mulberry
/
oo
\
65/80
5/5
40/60
65/100
115/85
5/10
V)
North
20/25
Fro5ped pad
52
O
094
55/25
35/30
555/97
10051
5/5 4il"
15/25
moo
35/5 z
C51
)4M 230/105C
Z
5/10 10/10
9 901160
5 515 r t * 01160
15 4
12 o
105110
120/210
10511
! 200/170
$ 4-
E0
660/420
30/20
Mulberry
270/550
55/50
10/10
D::C/
200/90
515
45/55
r%)
5105
: 2 0
i 25/50
605/30
5n5 4ba?O-
3 1 fta?Ip
015
. ...............................
%S\
100/175 210/93
515 0$ 515
iQ iQ In 1)
Figure 9: Year 2011 Total Peak Hour Turning Movements (AM/PM)
16
Poudre School Distrialfaritner Coun�y Allaintenance Facility EL B Engineering LLC
Tronsporlation ImpactSfu4y 5401 Tavlor Lone
December 2008 Fort Collins, CO 80528
North
.. v
N o0 O
910/1555
790/1100 ;lti
1450/14
270/310
Prospect goad
60/70
00/450
5o/to
I
340/700 840/535
65/60 50/40
4t 0*
nz
oz
Mulberry
/
� t-
$ a
505/445
465/5801 515
515
45
(75/125
15115
200/190
\�
15
1
25/25
O-',o
340/880
245/210
740/920580/910
465/5807�&C35051445
515
C15
Figure 8: Year 2025 Background Peak Hour Turning Movements
(AM/PM)
15
Poudre School DistricllLarinter CounlY Maintenance Tacility FLB Engineering, LLC
Transportation Impact Study 5401 Taylor Lane
December 2008 Fort Collins, CO 80528
/ �
Q �
N O
OO
480/570 ��O5 1135/10.
550/900''180/350
Prospect I oad
N O N
265/290
a 290/260
765/1190
1105/1010
515
15/25
285/585 700/445
55/50 #3 35/25
O N Ci O O
35/15
220/280
5/25 220/3
j' 205/200 5/5
5/5
N
rf N N
1
485n10
120/155
65/25
N 450/40 r4iF,
91 C)
e o /
h�
OMO V\1 M
Figure 7: Year 2015 Background Peak Hour Turning Movements
(AM/PM)
¢2
O
205/200 00�220/315
5/5 515
14
Poudre School DistricdL,arimer CounL,y Hointe77ance Facility EL13 Engineering, LLC
Transportation Impaci Siucly 540/ Taylor Lane
December 2008 Fort Collins, CO 80.528
Mulberry
� c
60n0
5/5
40/60
65/100
io5n5
Owffe
5/10
North
c
N��O�{v�i
210/365 �.
'
855/6
20/25
�55/655
f I`,
Pro5ped p ad
/ ` �/1
O M h
55/25 '
,01
35/30
__
545/965
1010/
5/5 ice&
15/25
270/550 Up 660/420
50/45 30/20
35/5
Jib 220/95
5/10 200/90
419Q0; 65/160 515
515
St
oo /
O
4-
120/20
105/10
N 95/170 -
190/160
r
R
b N
Figure 6: Year 2011 Background Peak Hour Turning Movements
(AM/PM)
1
N
�
S
O
65/160 200/93
5/5 5/5
13
PoudreSchool District/Larimer Cowan. Alaintenance Facility ELB Engineering LLC
Transportation hnPact Study 5401 Tavlor Lane
December 2008 Fort Collins, CO 80528
Mulberry
V Mom.
2/50515
25
tuarcP015
601/50 60/20
25no
qN
North
V. Traffic Projections
Background traffic for the year 2011 was estimated by assuming that all traffic
movements on the public roadway system would increase by 1.5% per year, as agreed to
in the initial scoping meeting with the Traffic Operations Department. It is not likely
that the projects planned near the interchange will be implemented by this time.
Traffic projections for the year 2015 assumed that the Interstate Land project and the
White development had been implemented.
Traffic for the year 2028 assumed a full build -out for the area. Background traffic
projections are displayed in Figures 6, 7, and 8.
Site -generated traffic, by phase, was then added to each of the background traffic
projections to determine the total traffic volumes at the key intersections. Total traffic
projections are displayed in Figures 9, 10, and 11.
12
Pottdre School District/Laritner Counti: Alaintenance Facility ELB Engineering, LLC
Transportation Impact Study 5401 Tavlor Lane
December 2008 Fort Collins, CO 80528
prospect pad
10/10
50110
50/10
Mulberry ( 5HI4)
0
�
o
N ti
O O
h
O O
10/10 p
p 0/0
5/5
2015
65/20
15/10 C
<ka
15/10
0
h
� O
O
.w
� O
V1 N 1n
�'
Nominal
a
30/15
75/20
0/0
1015
5/5 5110 40/25
135/.55
9
5/5 15110 70/45
o 0
�
v
North
i
Figure 5: Site Distributed Traffic (AM/PM)
XX/)CX — YEAR 2010
.VV.KV— YEAR 2015
XX/XX — YEAR 2028
11
Poudre School District/Larimer County Afmintenance Facility ELB Engineering, LLC
Transportation Impact Stuthl- 5401 Tmdor Lane
December 2008 Fort Collins, CO 80528
Prc
� v
N
North
Figure 4: Site Distributed Traffic
0
O
N
c5%
10
Poudre School DistricbZorimer County Maintenance Facilih- ELB Engineering, LLC
Transportation Impact Studv 5401 Tavlor Lane
December 2008 Fort Collins, CO 80528
Table 3 — Trip Generation Estimate
C. Trip Distribution
Trip distribution is the process of determining where the trips are coming to and from the
site. The distribution was based on knowledge of the existing and planned street system,
development trends in the area, the current traffic patterns, the position of the facility to
the PSD and Larimer County, other traffic studies that have been performed in the area,
and engineering judgment. The distribution is expected to remain fairly constant over
the long term. The distribution for the project is displayed in Figure 4. Site distributed
traffic is shown in Figure 5.
9
Poudre School District ner Ca; o tv ,Maintenance F, _: ii t : ELB Engineering. LLC
T.ransportarion Impact Starch 5401 Taylor Lane
December 2008 Fort Collins, CO 80528
— N Nf• Cam' NY MW
-- O
7-
JP
6-71
�.�. rIGN
O
rac/ ra i
�_. N 8�
--bk§ffRO ECT ROAD T .` r
Opdon -17
Figure 3: Site Plan
B. Trip Generation
Trip generation is a key component when assessing the impact of a development upon
the surrounding roadway network. Trip generation rates for the proposed project are
based on Trip Generation, 7`h Edition (Institute of Transportation Engineers). The
manual presents trip generation rates from numerous land use studies. It is assumed that
the transportation/vehicle maintenance operations are similar to the light industrial code.
Table 3 below summarizes the proposed trip generation for the project. The project can
expect to generate approximately 2128 daily trip ends, 529 morning peak hour trip ends,
and 223 afternoon peak hour trip ends.
8
Poudre School District Larimer - rum r, =i ELB Emmneering, LLC
Transportation Impact Studv 5401 Tmdor Lane
December 2008 Fort Collins, CO 80528
IV. Project Description
A. Project
The proposed development is the relocation of the current PSD
administrative/transportation related activities from the west Laporte Avenue site to the
northwest corner of Prospect Road and County Road 5. The project also includes the
relocation of the vehicle maintenance operations of Larimer County to the site. In the
long-term horizon, a potential future school will be constructed.
Access to the site is via three curb cuts: two on Prospect and one on CR5. The CR5 cut
will be for the public school and will likely be for buses only. The other two curb cuts
will align with McLaughlin Lane and Meadowaire Drive.
The project will be constructed in three phases:
• Phase I — curb cut with McLaughlin Lane and will be the warehousing
operation. The time frame is by the year 2010
• Phase II — The construction of the PSD and the Larimer County transportation
maintenance/bus facilities. The time frame for this phase of the project is the
year 2015.
• Phase III — This phase is the school with an estimated 750 students.
A site plan is provided in Figure 4.
7
Poudre .School District/Larimer CounA,, Maintenance Facility ELB Engineering, LLC
Transportation Impact Studv 5401 Taylor Lane
December 2008 Fort Collins, CO 80528
Table 2
Year 2008 Capacity Analysis
Existing Traffic -Year 2008
AM
PM
Intersection
Movement
LOS
Delay
(sedvehicle)
LOS
Delay
(sectvehicle)
Prospect/Western Frontage Road
(Traffic Signal control)
L
[EEEB
B
19.5
B
11.2
T/R
A
7.0
C
31.9
B L
A
8.8
D
41.4
B T/R
C
28.1
C
30.9
NB L
C
30.5
C
24.3
NB T/R
C
30.4
C
24.3
SB L/T/R
C
30.7
C
25.3
OVERALL
C
21.0
C
30.9
Prospect/SB Ramps
(Traffic Signal control)
EB T
B
12.2
C
33.6
EB R
A
0.3
A
0.4
B L
A
5.7
B
11.1
B T
B
16.1
C
24.8
SB L
C
20.5
B
11.9
SBR
A
0.2
A
0.1
OVERALL
B
10.1
B
15.4
Prospect/NB Ramps
STOP
EB UT
D
50.6
D
46.4
WB T/R
C
27.6
B
19.3
NBL
B
14.4
B
15.7
NB/R
A
6.9
A
9.9
OVERALL
C
23.9
C
27.1
Prosped/Eastem Frontage Road
STOP
EB APPROACH
A
1.2
A
1.0
WB APPROACH
A
0.0
A
0.9
NB APPROACH
B
11.4
B
12.0
OVERALL
B
10.0
B
10.1
Prospect/McLaughlin Lane
STOP
EB L/R
A
0.0
A
0.0
WB T/L
A
0.0
A
0.1
NB L/R
A
9.8
A
9.7
OVERALL
A
0.1
A
0.2
Prospect/Meadowaire Drive
STOP
ES UR
A
0.0
A
0.0
WB T/L
A
0.1
A
0.2
NB UR
A
9.9
A
9.4
OVERALL
A
0.2
A
0.
Prospect/County Road 5
STOP
EB APPROACH
B
10.9
B
10.5
WB APPROACH
B
11.5
B
10.5
NB APPROACH
A
4.8
A
3.
SB APPROACH
A
0.1
A
0.3
OVERALL
A
0.1
A
7.
Mulberry/County Road 5
STOP
WB L
NB APPROACH
OVERALL
A
C
A
8.0
18.9
1.1
A
C
A
8.8
19.7
1.7
6
Poudre School District/Larimer County Afaintenance Facility ELB Engineering, LLC
Transportation Impact Study 5401 Taylor Lane
December 2008 Fort Collins, CO 80528
C
g o m
NO (�
199/352818/5
342/62841vfl'� 15/22
Prospect foal
-=cam
55.24 r
35/29
522/927
970/689
1/4 4D"
13/21
V IS M
16/22 3/5
165/90
150/11/132
15/35 0/11
I
258/536
43/40 4
)0
632/404
27/16
n
61/157 160/87
1/1 0/1
o
Mulberry
14/46409N.
6/0
23/47 Q 35/20
23/64 %� r 0/2
110/19
1016
193/149
N 91/164```
a$
61/153
C2/2
163/89
2/2
C
L"
M
O
Figure 2: Existing Peak Hour Turning Movements (AM/PM)
North
5
Poudre School DistricdLarimer Countv Maintenance Facility LZI3 Engineering, LLC
Transportation Impact Study 5401 Taylor Lane
December 2008 Fort Collins, CO 80528
Q. Surrounding Land Uses
Land uses in the area are primarily agricultural. There are a few minor residential
developments in the area and several others have been recently proposed. From a traffic
engineering perspective, the terrain is considered flat.
D). Current Traffic Conditions
Capacity analyses were performed at the key intersections to determine if existing
deficiencies exist on the roadway network. The analyses followed the procedures and
techniques of the Highway Capacity Manual 2000. Level of Service (LOS) is a
qualitative term describing operating conditions and expressed in terms of delay. Table
1 below provides the definitions of LOS for both signalized and unsignalized
intersections. Table 2 displays the results of the analyses. The worksheets from the
analyses can be found in Appendix C.
Table 1
Level of Service Definitions
Level of
Service
Signalized Intersection
Average Total Delay (seconds/vehicle)
Unsigoalized Intersection
Average Total Delay (seconds/vehicle)
A
<10
<10
B
>10 and <20
>10 and <15
C
>20 and <35
>15 and 1525
D
>35 and <55
>25 and < 35
E
>55 and< 80
>35 and <_50
F
>80
>50
As can be seen in Table 2, the key intersections are currently operating at acceptable
levels of service.
4
Poadre School District/Larimer Countv Maintenance Facilitl ELB Engineering, LLC
Transportation Impact Study 5401 Tm for Lane
December 2008 Fort Collins, CO 80528
III. Existing Conditions
A).. Current Traffic
Recent peak hour turning movements at the key intersections were obtained during
August and October 2008.. The morning and afternoon peak hour traffic counts at the
key intersections are displayed in Figure 2. The peak hour counts were conducted in 15
minute increments for the periods of 7:00-9:00 AM and 4:00:-6:00 PM. The raw
information regarding the turning movements is provided in Appendix B.
B). Current Street System
The primary streets in the area of the development are the I-25 ramps, frontage road,
County Road 5 and Prospect Road. The project borders Prospect and CR5. Prospect is
considered an east -west four lane arterial on the City's Master Street Plan. County Road
5 from Prospect to Mulberry is also classified as a 4-lane arterial. However, both .
roadways, in their current configuration adjacent to the site are two lane rural cross
sections with a speed limit of 45 mph. There are no bike lanes or sidewalks in the
immediate area.
The frontage road west of the site is a two lane roadway with a speed limit of 35 mph.
There are no sidewalks or bike lanes on the frontage road. Land uses along the frontage
road are primarily agricultural.
The intersections of the western frontage road and both northbound and southbound
ramps with Prospect Road were signalized in the last several years to accommodate the
new rest area/visitor center located in the south west quadrant of the interchange.
The bridge over the frontage road is a two lane structure that has been identified by both
State and local officials as a deficient structure in terms of available capacity and the
issue of replacing the interchange has received significant discussion in the last few
years.
.3
Poudre School District/Larimer County Afaintenance Facility ELB Engineering, LLC
Transportation Impact Study 5401 Tavlor Lane
December 2008 Fort Collins, CO 80528
Fort ;o!I.ns
Doantoa•n
Airpoc Y
.4: � s•,r nac a
Canno
i�ix NaWra •
t`atural 6e'ra R •rerbend Pods
Na:rrol >a
a pals
® rr•'pL+PFCt 4tl
Coaar..00d
F uli�w
11 t.a:ural.�,-ce
'iJ ming Deer
NawTal=Area
-'t
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Figure 1: Vicinity Map
s
2
Poudre School DistrictZorimer Countv Maintenance Facilitv ELB Engineering, LLC
Transportation lmpocr Studv 5401 Tm for Lane
December 2008 Fort Collins. CO 80528
I. Introduction
This transportation impact study addresses the Poudre School District and Larimer
County Development located in the northwest quadrant at the intersection of Prospect
Road and County Road 5 in Fort Collins, Colorado. The project entails the development
of a warehousing facility, vehicle maintenance facility for both PSD and for Larimer
County, and in the long-term, a new school. The project is expected to be completed
over a 20-year period in three separate phases. The site is currently in agricultural use.
Figure I on the following page is a vicinity map displaying the location of the project.
II. Agency Discussions
Discussions with City staff indicated that a full traffic study as described in Chapter 4 of
the Larimer County Urban Area Streets Standards (LCUASS) would be appropriate for
this particular development. Staff also requested that an alternative modes analysis be
conducted as part of the TIS. Standard peak hours are used in the analyses during and
average weekday.
There are pending projects within the area to consider (NE and NW quadrants of the
interchange) and background traffic is assumed to be 1.5% per year. The short-range
horizon for the project is the year 2010; the mid-term horizon is the year 2015, and the
long range 2028. Appendix A contains the form (Attachment A), which outlines the
agreed to scope of the study
1
Poudre School District/Lorimer County Maintenance Facility ELB Engineering, LLC
Transportation Impact Study 5401 Taylor Lane
December 2008 Fort Collins, CO 80528
List of Figures
Figures Page
1.
Vicinity Map
2
2.
Existing Peak Hour Traffic
5
3.
Site Plan
8
4.
Trip Distribution
10
5.
Site Distributed Traffic
11
6.
Year 2011 Background Traffic
13
7.
Year 2015 Total Traffic
14
8.
Year 2028 Total Traffic
15
9.
Year 2011 Total Traffic
16
10.
Year 2015 Total Traffic
17
11.
Year 2028 Total Traffic
18
12.
Multimodal Evaluation Area
25
APPENDIX
A. Base Assumptions/Scoping Form
B. Traffic Counts
C. HCM Capacity Analysis — Base Condition
D. HCM Capacity Analysis — 2011 Total and Background
E. HCM Capacity Analysis — 2015 Total and Background
F. HCM Capacity Analysis - 2028
TABLE OF CONTENTS
Page
L
Introduction
I
II.
Agency Discussions
1
III,
Existing Conditions.
3
W.
Project Description
7
V.
Traffic Projections
12
VI.
Traffic Analysis
19
VIL
Improvements
23
VM.
Multimodal Analysis
24
IX.
Conclusions
27
List of Tables
Table Page
1. LOS Definitions 4
2. Year 2008 Capacity Analysis 6
3. Trip Generation 9
4. 2011 Background Traffic Capacity Analysis 20
5. 2015 Total Traffic Capacity Analysis 21
6. 2028 Total Traffic Capacity Analysis 22
Poudre School District/Larimer County Transportation
Maintenance/Vehicle Facility and Middle School Development
Transportation Impact Study
Fort Collins, Colorado
December 11, 2008
Prepared for:
Tammie Simpson
Project Manager
Poudre School District
2445 Laporte Avenue
Fort Collins, CO 80524
Prepared by:
Eric L. Bracke, P.E., P.T.O.E.
5401 Taylor Lane
Fort Collins, CO 80528
Office:970-988-7551
Fax:970-225-8942
ELBEngineering(a,lpbroadband. net
This document, together with the concepts and designs presented herein, as an instrument of service, is intended only
for the specific purpose and client for which it was prepared Reuse of and improper reliance on this document without
written authorization from ELB Engineering, LLC shall be without liability to ELB Engineering, LLC.
LLB fngineering, LLC
•' TransportationZu�ineerin�.S'olutioas
Transportation Impact Study
Poudre School District/Larimer County Project
Fort Collins, Colorado
December 2008