120112_LymanPowersUpdate_TS
SRF No. 0076098
MEMORANDUM
TO: Nathen Will, P.E.
Senior Associate
FROM: Patrick Corkle, P.E. (MN,WI), PTOE, Principal
Leif Garnass, P.E. (MN,MO), PTOE, Senior Engineer
DATE: January 12, 2012
SUBJECT: LYMAN BOULEVARD PHASE III ANALYSIS UPDATE (REVISED FROM 5/26/2011)
CITY OF CHANHASSEN, CARVER COUNTY, MINNESOTA
INTRODUCTION
Lyman Boulevard (CSAH 18) is being upgraded from a two -lane undivided roadway to a four-
lane divided roadway from Audubon Road (north of Lyman Boulevard) to Powers Boulevard
(CSAH 17). This study provides a history of the previous worked completed and provides an
update of the operational analysis results at the following intersections:
Audubon Road (north of Lyman Boulevard) at Lyman Boulevard (CSAH 18)
Sunset Trail at Lyman Boulevard (CSAH 18)
Powers Boulevard (CSAH 17) at Lyman Boulevard (CSAH 18)
TH 212 North Ramps at Powers Boulevard (CSAH 17) -- not part of CSAH 18 upgrade
TH 212 South Ramps at Powers Boulevard (CSAH 17) -- not part of CSAH 18 upgrade
Traffic volume forecasts and a traffic analysis (Intersection Control Evaluation) were previously
completed in 2007 to determine the roadway configuration and traffic control devices along the
Lyman Boulevard corridor. This analysis was completed prior to the opening of the Chanhassen
High School, approval of the local community comprehensive plans in Carver County, and the
completion of the TH 212 Design-Build project. With the completion of these significant
documents/projects, it seemed prudent to update the previous traffic analysis.
PROJECT HISTORY
Table 1 on the following page summarizes the differences in the traffic forecasting assumptions
and data sources between the original 2007 intersection control evaluation study and the more
recent work. Differences between the studies are based on the travel demand model used,
Nathen Will, P.E. January 12, 2012
Page 2
roadway network assumptions, and land use assumptions for the area bounded by Lyman
Boulevard, Powers Boulevard, Audubon Road, and Pioneer Trail.
Table 1
Forecast Assumptions & Data Sources
Assumptions & Data Sources
Original
Forecasts
(completed in 2007)
Revised
Forecasts
(Figure 3)
Updated
Forecasts
(Figure 4)
Existing Base Conditions
Chanhassen High School Estimated volumes (1) Collected volumes
(September 2010)
Collected volumes
(Sep 2010/Mar 2011) New TH 212 Alignment
(impact of traffic volumes) Estimated volumes (2)
Future Assumptions
2006 Draft
Carver County Roadway Systems Plan X
2009 Update
Carver County Roadway Systems Plan X X
Chanhassen 2005 AUAR X X (3)
City of Chanhassen
2030 Comprehensive Plan X (4)
Land Use Summary
Residential 1496 dwelling units 1634 dwelling units 857 dwelling units
Office 285,000 sq ft 724,000 sq ft 1,368,000 sq ft
Retail Development 200,000 sq ft No retail 644,000 sq ft
(1) Based on volumes collected by Traffic Data, Inc. in September of 2006.
(2) Based on typical forecasting methodology.
(3) Regional/Lifestyle Center land use substituted from 2030 Comprehensive Plan (see Attachment A).
(4) Assumes 50 percent retail and 50 percent office land uses as direct by the City (see Attachment A and Attachment B –
Consideration of 100 percent retail).
The Twin Cities Regional Travel Demand Model developed by the Metropolitan Council was
updated with the additional detail described in Table 1. The following provides additional
supporting details:
Chanhassen High School: The High School opened in the fall of 2009. Turning
movement counts collected in September of 2010 and March of 2011 (see Figure 2)
reflect the actual traffic patterns induced by the new school. The estimated volumes used
in the 2007 study were based on volumes collected in September of 2006 by Traffic Data,
Inc.
New TH 212 Alignment: This new freeway facility opened for its entire length in the fall
of 2008. Traffic volumes (collected in September of 2010 and March of 2011) used in
the current study forecasts reflect the actual impact of this facility on travel patterns near
the study corridor. The estimated volumes used in the 2007 study were based typical
forecasting methodology for a proposed roadway network.
Carver County Roadway Systems Plan: The initial draft of this plan was developed in
2006. It was then updated in 2009 with more recent land use data (no roadway network
Nathen Will, P.E. January 12, 2012
Page 3
changes) reflecting recently completed comprehensive plans in cities throughout Carver
County during the period since 2006. The “County Only” roadway improvement
scenario from the Plan was used in the development of traffic volumes for this
study. This means no new capacity was assumed on trunk highways, most notably TH 5
and TH 41 near the study area.
Chanhassen 2005 AUAR: This document provided additional roadway network and land
use details for the area bounded by Lyman Boulevard, Powers Boulevard, Audubon
Road, and Pioneer Trail. No retail development was included.
City of Chanhassen 2030 Comprehensive Plan: The 2030 Comprehensive Plan defines a
mix of commercial and office land uses in the southwest quadrant of CSAH 18 (Lyman
Boulevard) and CSAH 17 (Powers Boulevard) for year 2030. Direction was provided by
the County to substitute these land use assumptions in place of the land uses previously
referenced in the Chanhassen 2005 AUAR for this specific location. See Attachment A
for additional details on the Regional/Lifestyle Center land use update.
Forecasts prepared assuming the Chanhassen 2005 AUAR land uses are shown in Figure 3.
Forecasts prepared assuming the 2030 Comprehensive Plan substituted land uses are shown in
Figure 4. It should be noted that these changes to the forecasts from the 2007 study are
dependent on the east-west collector connection at the TH 212 north ramp intersection of Powers
Boulevard. Without this connection, future volumes at the intersection of Lyman Boulevard and
Powers Boulevard would increase above those shown in Figures 3 and 4.
YEAR 2010 EXISTING CONDITIONS
The existing conditions analysis is based on existing traffic volumes and existing roadway
geometrics/control (see Figure 2). Table 2 provides a summary of the existing conditions
operational analysis results.
Table 2
Year 2010 Existing Conditions
Operational Analysis Results
Intersection Level of Service
A.M. Peak P.M. Peak
Audubon Road (north) at Lyman Boulevard A / E (1) A / B
Sunset Trail at Lyman Boulevard A / C A / C
Powers Boulevard at Lyman Boulevard C C
TH 212 North Ramps at Powers Boulevard A B
TH 212 South Ramps at Powers Boulevard B B
“X / X” indicates overall intersection operations followed by worst operating approach.
(1) Acceptable levels of service achieved under traffic signal controlled conditions.
Nathen Will, P.E. January 12, 2012
Page 4
Results of the analysis indicate the study intersections operate at overall acceptable levels of
service under year 2010 existing conditions; however, the side-street stop controlled southbound
left-turn movement at the Audubon Road/Lyman Boulevard intersection operates at a LOS E.
Traffic signal warrant criteria are not satisfied at this intersection under existing volume and
geometric conditions.
Additionally, queues for the northbound left-turn at the Powers Boulevard/Lyman Boulevard
intersection occasionally spill out of the exclusive turn lane and block the inside northbound thru
lane during the a.m. peak hour. During the p.m. peak hour, queues for the westbound left-turn at
the TH 212 North Ramps/Powers Boulevard intersection also occasionally spill out of the
exclusive turn lane.
YEAR 2030 BUILD CONDITIONS
Chanhassen 2005 AUAR Land Use Forecasts
The year 2030 build conditions analysis was based on existing intersection control, forecasted
traffic volumes, and recommended improvements as shown in Figure 3. Theses recommended
improvements were previously included in the layout dated February 4, 2011. Table 3 provides
a summary of the operational analysis results.
Table 3
Year 2030 Build Conditions (Chanhassen 2005 AUAR Land Use Forecasts)
Operational Analysis Results
Intersection Level of Service
A.M. Peak P.M. Peak
Audubon Road (north) at Lyman Boulevard F / F (1) F / F (1)
Sunset Trail at Lyman Boulevard A / F (1) A / F (1)
Powers Boulevard at Lyman Boulevard D D
“X / X” indicates overall intersection operations followed by worst operating approach.
(1) Acceptable levels of service achieved under traffic signal controlled conditions.
Results of the analysis indicate the Audubon Road (north of Lyman Boulevard)/Lyman
Boulevard and Sunset Trail/Lyman Boulevard intersections are expected to operate poorly under
future build conditions assuming the Chanhassen 2005 AUAR land use forecasts. The
installation of traffic signal control would provide acceptable operations at the Audubon Road
and Sunset Trail intersections.
2030 Comprehensive Plan Substituted Land Use Forecasts
The year 2030 build conditions analysis is based on existing intersection control, forecasted
traffic volumes, and recommended improvements as shown in Figure 4. Table 4 provides a
summary of the operational analysis results.
Nathen Will, P.E. January 12, 2012
Page 5
Table 4
Year 2030 Build Conditions (2030 Comprehensive Plan Substituted Land Use Forecasts)
Operational Analysis Results
Intersection Level of Service
A.M. Peak P.M. Peak
Audubon Road (north) at Lyman Boulevard F / F (1) F / F (1)
Sunset Trail at Lyman Boulevard A / F (1) F / F (1)
Powers Boulevard at Lyman Boulevard C D
TH 212 North Ramps at Powers Boulevard C D (2)
TH 212 South Ramps at Powers Boulevard B B
“X / X” indicates overall intersection operations followed by worst operating approach.
(1) Acceptable levels of service achieved under traffic signal controlled conditions.
(2) Construction of the fourth leg, and additional improvements, a re required to achieve LOS D.
Results of the analysis indicate the Audubon Road (north of Lyman Boulevard)/Lyman
Boulevard and Sunset Trail/Lyman Boulevard intersections are expected to operate poorly under
future build conditions. The installation of traffic signal control would provide acceptable
operations at the Audubon Road and Sunset Trail intersections. Based on current growth
projections, traffic signal control would be warranted at the Audubon Road intersection in 10 to
15 years but would not be warranted at the Sunset Trail intersection during the 20 year study
period.
The current geometric layout of TH 212 North Ramps/Powers Boulevard intersection includes
turn lanes for access to the future fourth leg of the intersection; however, the following
geometrics are needed to accommodate the design year 2030 build volumes:
Eastbound: Two left-turn lanes, two thru lanes, and one right-turn lane.
Westbound: Two left-turn lanes, one thru lane, and two right-turn lanes.
Table 5 provides a summary of the design year 2030 build conditions volume-to-capacity (V/C)
ratios. A V/C ratio gives an estimate of the available capacity of an intersection.
Table 5
Year 2030 Build Conditions (2030 Comprehensive Plan Substituted Land Use Forecasts)
Volume-to-Capacity (V/C) Ratios
Intersection V/C
A.M. Peak P.M. Peak
Powers Boulevard at Lyman Boulevard 0.73 0.79
TH 212 North Ramps at Powers Boulevard 0.63 0.94 (1)
TH 212 South Ramps at Powers Boulevard 0.49 0.53
(1) Construction of the fourth leg, and previously noted improvements, are required to achieve a V/C < 1.
Based on the V/C ratios, capacity is available at the Powers Boulevard/Lyman Boulevard and
TH 212 South Ramps/Powers Boulevard intersections; however, the TH 212 North
Nathen Will, P.E. January 12, 2012
Page 6
Ramps/Powers Boulevard intersection is expected to operate near capacity under the 2030
Comprehensive Plan substituted land use forecasts.
FINDINGS & RECOMMENDATIONS FOR LAYOUT
Given the construction of the fourth leg and the geometrics needed to accommodate the design
year 2030 volumes at the TH 212 North Ramps/Powers Boulevard intersection, the
recommendations detailed below will provide acceptable operations under both year 2030
forecasted build conditions (Chanhassen 2005 AUAR and 2030 Comprehensive Plan forecasts).
Powers Boulevard (CSAH 17) at Lyman Boulevard (CSAH 18)
Continuation of traffic signal control is recommended at the Powers Boulevard/Lyman
Boulevard intersection. Recommended roadway geometrics are below:
Northbound: Two left-turn lanes (325 feet minimum), two thru lanes, and one right-
turn lane (250 feet minimum).
Southbound: No modifications to existing.
Eastbound: One left-turn lane (400 feet minimum), one thru lane, and one “trap”
right-turn lane (600 feet of six inch solid white striping, 200 feet of six inch dotted
white striping with a “pork chop” island).
Westbound: No geometric capacity improvements needed.
A two-lane roadway is acceptable based on operations east of Powers Boulevard but a right -turn
trap is created from the eastbound transition from the four-lane roadway to the two-lane
roadway. Poorly designed trap lanes can confuse drivers because they violate driver
expectations; however, trap lanes are safe and can operate efficiently when they are properly
signed and striped.
Audubon Road (north of Lyman Boulevard) at Lyman Boulevard (CSAH 18)
Continuation of side-street stop control is recommended at the Audubon Road (north of Lyman
Boulevard)/Lyman Boulevard intersection until further study warrants a change in traffic control.
This recommendation is consistent with the previous intersection control evaluation (ICE)
document prepared in 2007. The need for traffic signal control should be evaluated as future
development occurs along the corridor and based on current growth projections, traffic signal
warrant criteria would be satisfied in 10 to 15 years. Recommended roadway geometrics are
below:
Northbound*: One left-turn lane and one shared thru/right-turn lane.
Southbound: One left-turn lane and one shared thru*/right-turn lane.
Eastbound: One left-turn lane, two thru lanes, and one right-turn lane*.
Westbound: One left-turn lane*, two thru lanes, and one right-turn lane.
* For future roadway.
Nathen Will, P.E. January 12, 2012
Page 7
Sunset Trail at Lyman Boulevard (CSAH 18)
Continuation of side-street stop control is recommended at the Sunset Trail/Lyman Boulevard
intersection until further study warrants a change in traffic control. The need for traffic signal
control should be evaluated as future development occurs along the corridor and based on current
growth projections, traffic signal control would not be warranted in during the 20 year study
period, although the warrants should be reviewed based on the actual regional/lifestyle center
development. Recommended roadway geometrics are below:
Northbound*: One shared left-turn/thru lane and one right-turn lane.
Southbound: One shared left-turn/thru*/right-turn lane.
Eastbound: One left-turn lane, two thru lanes, and one right-turn lane*.
Westbound: One left-turn lane*, two thru lanes, and one right-turn lane.
* For future roadway.
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LEGEND
- Future Roadway
SRF No. 6098
May 2011
Project Location
Lyman Boulevard Phase III Analysis Update
Carver County
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WATER TOWER
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RMALLORYCT.MISSION
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101
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S
C
HPL.RRARPLPOBRAMBLE
DR.GREATDELPHINIUM LA.HILLPLAINSRASPBER R Y
T R A IL S ENDEDEN PRAIRIE
2000 POP. 54,901
LP
CT.
IG
A N
RNBUTTE UT DELCIR.
BLVD.ELLENDAERRIVKCORLA.ELWASHINGTONBLVD.INDEPENDENCECIR.21.22.COLONIAL LA.
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18.021. FRANKLIN LA.
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23. JEFFERSON DR.AUDUBONO S PREYCT.NEELDLA.TFISOVIEWPL.VALLEYVALLEYV
A
L
L
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V
I
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WR IDGE
T116N
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BARBARA
CT.
LY
M
A
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S U S A N DR.CHANHASSENHILLS DR.N.
L A K E S U S A N
C T .RDR.124.GRANDVIEWRD.Ril
e
y
Cre
e
k
RileyCreekPOWERSBLVD.LA.CT.EWWA T
BL
UF
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119. LONG MEADOW PT.
E F
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127. MISSION HILLS WAY W.BLVD.V D .K
1 6 5.
TR.
R
EYALK
EI
LLAKEDR.RIL EY
K
EM O T O R PLEXCT.SCHOOL DR.
212
212
212
15
15
R
D.CROSSROA D S
BL V D
166.B L
EBLUFFCE167.BV D .
168.
166. DECLARATION DR.
167. ROOSEVELT DR.
168. COLUMBIA LA.
E RSED G EDR.APPLETREE LA.I
AGES.W.V
L
LDR.18 18
17
17
1414
18NORTHNorth 28 (12) 428 (272)450 (185) 57 (56)
154 (118)
8 (20)
(91) 93
(186) 140
(292) 146 (64) 42 (421) 146 (75) 176 7 (7) 440 (165) 466 (304)
79 (266) (185) 30 (548) 270 303 (100) 213 (108) 234 (64)
6 (3) (342) 181 (472) 168 SRF No. 6098
May 2011
Year 2010 Existing Volumes and Geometrics
Lyman Boulevard Phase III Analysis Update
Carver County
Figure 2H:\Projects\6098-P3\TS\Figures\Fig 2A_Existing Conditions.cdr[8,800]
[7,400]
[4,400]
[7,800]
LEGEND
XX
(XX)
- A.M. Peak Hour Traffic Volumes
- P.M. Peak Hour Traffic Volumes
- Average Daily Traffic
- Signalized Intersection
- Side-Street Stop Controlled
- Future Roadway
[X,XXX]
88 (52)
758 (310)
(57) 121
(530) 318 (69) 39 (115) 95 [11,300]
[2,900]
Rice
Marsh
Lake
C
R
il
e
yERIECHAN
ST.
CHAN HURONVI E W ST.KIOWAIROQAVE.AVE.AVE.LAREDOW.S T .PICHA DR.
P A R K
PARK
R D .DR.CT.AUDUBONRD.BLVD.SUNSETT R.LYMAN BLVD.
DEERFOOT
TR.
K IO W ATR.PIONEER TR.
W.
JONATHAN BLVD.N.COLUMBIACOLUM CT.CT.W.N.PEAVEYST.RD.L
A
K
E HA Z E L T IN E DR.
Hazeltine Lake Bl
u
ff
Cr
eek
1516
21 22
R23W
T116W BLVD.PARKLAKES U S AN
C T.E G R E TP E L IC A N
T IMBER WOOD
DR.RENA IS SANC E
CT.
OAKWOOD
M A P L E W O O D
T E R .A C O R N
L A .CI
R.WOODPI
NEEASTWOOD
CT.FOXFORDMEADOWLARK
LA.RD.17
1
D E E R B R O O K D R .OAKSIDECIR.187thA VE. W.78th
96th ST.
W. 78th ST.
DR.
PINEVIEW
CT.
HERON D R .
I
BIS CT.
L A K E
DR.LAKELANDTE R .DNL
A
K
E
L
A
C
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R
.DR.WIE
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SHADOC T .M ERGC T .DR.GOW.7 9 thS T .BLVD.ETMARKL A K E DR.H ID D E N L A .80 th
ST.HIDDENCIR.M
ARSHDR.DAKOTA LA.ERIC CIR.HIDDENCT.ERIESPURCHEYENNEAVE.CHE YENN E
CIR.CIR.AV.DAKOTAERIECIR.PL.PARKLYMAN
BLVD.NOREXBLVD.DR.
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ST.NDE.
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SANTA
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CREEK TR.FLAM IN
BIA
City
Hall
112.CIR.BENWOODDR.R D .B O U L D E RRD.BOULDERVALLEYCT.RI DGETR.
U NS R ID GE
CT.
PL.
RIDGE
VALLEY LA.109.
MALLARD
CT.CT.C
T.
1
1
1
.DR.WESTLAKE CT.DR.DOVE CT.CT.DRAKEUS HI110. SUFFOLK DR.
111. ESSEX RD.W.
CT.LA.TI
GUADR.RIDGEFORESTTR.RHENNEPINCO.WYNNF IE LD
R D .CETR.CIR.KATIECIR.FIRETHORNPT.MAGENTA B A YCUANT
ER IN
115. GALWAY COVE
117. T OFT COVE
118. WALDORF CT.
114. DONEGAL COVE
116. SHAMROCKT R.
120. HEMLOCK CIR.
122. KELLY CT.
A N S E R
123.123. POWERS PL. LA.125.126.127.128.129.
1
3
1
.130.132.
86th ST.
124. MAYFIELD CT.
125. MISSION HILLS DR.
126. FRISCO CT.
128. BLACKBIRD CT.
129. HEARTLAND CT.
131. MONK CT.132.132. STONE CREEK RD.
LAKE
D R .W .C O M M E R C E D R .BITTERNCREEKB
L
U
F
F VIE
W
C
T.
CT.
CREEK VIEW
GALPINMcGLYNN
COULTER
BLVD.
133.134.135.133. STONE CREEK LA. W.
134. STONE CREEK LA. E.
135. BLUEBILLT R.
7 9 t h S T .GREATPIONEERCIR.COULTER
VIE
W
LYMAN
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C
T.WSIMONS DR.SCHULLERDR.NERJ ULIAN
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OOWMNUTAUAU
T UMNWO
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DBLVD.142POPPY DR.
BLUE SAGE LA.
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KTR.LAKE110.HI
L
LS
DR.
RIDGE
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O
OD DR.STO N E
ALISAANDREW
CT.CENTURYBLVD.N .B AY D
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R
D.RIDGE
WAY145.AUTUMNC T .A U T U M N R ID G E
SINNENKERBERBLVD.W .78th
ST.PALINSMAINST.L A K E D R .VI EW
LEI LA
C T .G R E EN136. SUNNYVALE DR.
ARBORETUM
RO S E WOOLAKEWESTDR.DDR.LLSSA NBURLWOOD
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RD.
MALR
O
S
E
CHAS
EBEARPATH
ENGLISHTURNST. MELLION
TR.
LAKE
LAKE DR.
136. PRISTINE PINE LA.
SP RU
SPRINGF
SUN Y A DR.CT.OVERLOOK146.147.
146. PARKLAND WAY
147. SHOREVIEW CT.DR.B L V D .
WATER TOWER
PL.TARGETLA.T
HE PINESVOGELF
PATHDR.C IR .
T
148.
148. GREENVIEW DR.CIR.UPLANDD R .W.LAKESWANBRIDLE
CREEK
CIR.
A R M S E
Lake
Riley
MESIERRATR.T R .
RMALLORYCT.MISSION
HILLSHILLSCIR.MISSIONHARVEST143.LA.144.CT.40.141.13 8.AVE.5
BLVD.
KIN
G
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L
A
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.
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R.
BIR DIELAKELAKESHORESHORESHORE
D R .C O V E
CIR .C T.DR.IR ONWOODBLVD.W.CARVERCO.1150.
150. WATER LEAF PL.
78th161.162.VI L L A G E
T R .CORPORATE
PL.
15
DR.SSNEERCV.HEELWHEELWAGONONW101
101
101LA.ALISAR F
L D
D
VN L E
LA
PONDEROSACT.1 5 7 .RD.P L OREX E
NTS
C
HPL.RRARPLPOST.GREATDELPHINIUM LA.HILLPLAINSRASPBER R Y
ENDA SV SEARBOEDEN PRAIRIE
2000 POP. 54,901
LP
CT.
IG
A N
RNBUTTE UT DELCIR.
BLVD.ELLENDAERRIVKCORLA.ELWASHINGTONBLVD.INDEPENDENCECIR.21.22.COLONIAL LA.
PLYMOUTH LA.
FREEDOM LA.COMMONWEALTHLLN LA.LINCO WASHINGTONCIR.23.F FUBL E K
CR EPASS
PEMBROKE
GER
18.021. FRANKLIN LA.
22. MADISON DR.
23. JEFFERSON DR.AUDUBONO S PREYCT.NEELDLA.TFISOVIEWPL.VALLEYVALLEY
V
A
L
L
E
Y
V
I
E
WR IDGE
T116N
R23W
Lake Susan
BARBARA
CT.
LY
M
A
N
CT.JANEDR.MARYCHANHAS S E N H IL L S R. S.DL A K E
S U S A N DR.CHANHASSENHILLS DR.N.
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y
Cre
e
k
RileyCreekPOWERSBLVD.LA.EWWA T
BL
UF
F QUINN RD.BLVD.
119. LONG MEADOW PT.
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LAKERILEYBLVD.130. MISSION HILLS WAY E.
127. MISSION HILLS WAY W.BLVD.V D .
K
1 6 5.
TR.
R
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EI
LLAKEDR.RIL EY
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212
15
15
R
D.CROSSROA D S
BL V D
166.B L
EBLUFFCE167.BV D .
168.
166. DECLARATION DR.
167. ROOSEVELT DR.
168. COLUMBIA LA.
E RSEDG EDR.APPLETREE LA.I
AGES.W.V
L
LDR.18 18
17
17
1414
18
5
NORTHNorth70 (50) 720 (480)590 (360) 90 (100)
220 (200)
30 (80)
(280) 260
(240) 210
(490) 250 (110) 80 (820) 320 (250) 380 60 (55) 0 (5)35 (45) 5 (10)
1150 (730)
35 (70)
(5) 5
(950) 650
(45) 15 (5) 10 (5) 5 (5) 5 *
“Trap” Right25 (35) 45 (10)20 (20) 140 (75)
1040 (680)
10 (30)
(350) 250
(795) 590
(35) 10 (170) 55 (40) 10 (260) 305 *
*
*
**
*
*
**
**
SRF No. 6098
May 2011
Year 2030 Build Conditions - Chanhassen 2005 AUAR Land Uses
Lyman Boulevard Phase III Analysis Update
Carver County
Figure 3H:\Projects\6098-P3\TS\Figures\Fig 3_Year 2030 Conditions.cdr[19,000]
[21,000]
[7,500]
[20,000]
LEGEND
XX
(XX)
- A.M. Peak Hour Traffic Volumes
- P.M. Peak Hour Traffic Volumes
- Average Daily Traffic
- Signalized Intersection
- Side-Street Stop Controlled
- Future Roadway
- For Future Roadway
[X,XXX]
[19,000]
[20,000]
[6,100]
[1,800]
Forecasted Volumes Based
on 2007 Study
*
[2,400]
[9,800]
[15,000]
Rice
Marsh
Lake
R
il
e
yIROQPICHA DR.
P A R K
R D .
CT.AUDUBONRD.BLVD.SUNSETT R.LYMAN BLVD.
DEERFOOT
TR.
K IO W ATR.PIONEER TR.CREEKDR.W.
JONATHAN BLVD.N.COLUMBIACOLUM CT.CT.W
.N.PEAVEYTR.
ST.RD.L
A
K
E HA Z E L T IN E DR.
Hazeltine Lake Bl
u
ff
Cr
eek
1516
21 22
R23W
T116W BLVD.PARKLAKES U S AN
CT.E G R E T
P E L IC A N
T IMBER WOOD
DR.RENA IS SANC E
CT.
OAKWOOD
M A P L E W O O D
T E R .A C O R N
L A .CI
R.WOODPI
NEEASTWOOD
CT.FOXFORDMEADOWLARK
LA.RD.1
D E E R B R O O K D R .OAKSIDECIR.96th ST.
DR.
PINEVIEW
CT.
HERON D R .
I
BIS CT.L A K E
DR.LAKELANDTE R .DNL
A
K
E
L
A
C
I
R
.DR.WIE
VHHIG
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T R .WAYESTEADMOH
SHADOC T .M ERG C T .DR.GOW.79th
S T .BLVD.ETMARKL A K E DR.H ID D E N L A .80 th
ST.HIDDENCI
R.M
ARSHDR.DAKOTA LA.ERIC CIR.HIDDENCT.ERIESPURCHEYENNEAVE.CHE YENNE
CIR.CIR.AV.DAKOTAERIECIR.PL.PARKLYMAN
BLVD.NOREXBLVD.DR.
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R.IC OAK
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NGALEORI
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.DR.F
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A
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15
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CREEK TR.FLAM IN
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U NS R ID GE
CT.
PL.
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VALLEY LA.109.
MALLARD
CT.CT.C
T.
1
1
1
.DR.WESTLAKE CT.DR.DOVE CT.CT.DRAKEUS HI110. SUFFOLK DR.
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CT.LA.TI
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R D .CETR.CIR.KATIECIR.FIRETHORNPT.MAGENTACUANT
115. GALWAY COVE
117. T OFT COVE
118. WALDORF CT.
114. DONEGAL COVE
116. SHAMROCKT R.
120. HEMLOCK CIR.
A N S E R
123.123. POWERS PL. LA.125.126.127.128.129.
1
3
1
.130.132.
86th ST.
124. MAYFIELD CT.
125. MISSION HILLS DR.
126. FRISCO CT.
128. BLACKBIRD CT.
129. HEARTLAND CT.
131. MONK CT.132.132. STONE CREEK RD.
LAKE
D R .W .C O M M E R C E D R .BITTERNCREEKB
L
U
F
F VIE
W
C
T.
CT.
CREEK VIEW
GALPINCOULTER
BLVD.
133.134.135.133. STONE CREEK LA. W.
134. STONE CREEK LA. E.
135. BLUEBILLT R.
7 9 t h S T.GREATPIONEERCIR.COULTER
VIE
W
LYMAN
LA.SHADOWWOOD
C
T.WSIMONS DR.SCHULLERCT.CT.DR.NERAGWJ ULIAN
TIMBEVID
R.
SD
OOWMNUTAUAU
T UMNWO
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DS
DR.LEHCARB RIDAL CREE
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L
LS
DR.
RIDGE
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O
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ALISAANDREW
CT.CENTURYN .B AY D
R.E.
R
D.RIDGE
WAY145.AUTUMNC T .A U T U M N R ID G E
SINNENKERBERPALINS
MAINST.L A K E D R .LEI LA
C T .G R EEN136. SUNNYVALE DR.
RO S E WOOLAKEWESTDR.DDR.LLSSA NBURLWOOD
RILEY
RD.
MALR
O
S
E
CHAS
EBEARPATH
ENGLISHTURNST. MELLION
TR.
LAKE
LAKE DR.
136. PRISTINE PINE LA.
SP RU
SPRINGF
SUN Y A DR.CT.OVERLOOK146.147.
146. PARKLAND WAY
147. SHOREVIEW CT.DR.B L V D .
WATER TOWER
PL.
T
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R
.
F
PA THDR.C IR .
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148. GREENVIEW DR.CIR.UPLANDD R .W.LAKESWANBRIDLE
CREEK
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A R M S
Lake
Riley
FA
RMMESIERRATR.T R .
RMALLORYCT.MISSION
HILLSHILLSCIR.MISSIONHARVEST144.CT.AVE.5
KIN
G
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T E R N C T.
RICE CT.
L
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BIR DIELAKELAKESHORESHORESHORE
D R .C O V E
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101
101
101LA.ALISAR F
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PONDEROSA1 5 7 .RD.P L OREX E
SETTLENTO
157. DORENKEMPER PL.
S
C
HPL.RRARPLPOBRAMBLE
DR.GREATDELPHINIUM LA.HILLPLAINSRASPBER R Y
T R A IL S ENDEDEN PRAIRIE
2000 POP. 54,901
LP
CT.
IG
A N
RNBUTTE UT DELCIR.
BLVD.ELLENDAERRIVKCORLA.ELWASHINGTONBLVD.INDEPENDENCECIR.21.22.COLONIAL LA.
PLYMOUTH LA.
FREEDOM LA.COMMONWEALTHLLN LA.LINCO WASHINGTONCIR.23.F FUBL EKC R EPASS
PEMBROKE
GER
18.021. FRANKLIN LA.
22. MADISON DR.
23. JEFFERSON DR.AUDUBONO S PREYCT.NEELDLA.TFISOVIEWPL.VALLEYVALLEY
V
A
L
L
E
Y
V
I
E
WR IDGE
T116N
R23W
Lake Susan
BARBARA
CT.
LY
M
A
N
CT.JANEDR.MARYCHANHAS S E N H IL L S R. S.DL A K E
S U S A N DR.CHANHASSENHILLS DR.N.
L A K E S U S A N
C T .RDR.124.GRANDVIEWRD.Ril
e
y
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e
k
RileyCreekPOWERSBLVD.LA.CT.EWWA T
BL
UF
F QUINN RD.BLVD.
119. LONG MEADOW PT.
E F
LAKERILEYBLVD.130. MISSION HILLS WAY E.
127. MISSION HILLS WAY W.BLVD.V D .K
1 6 5.
TR.
R
EYALK
EI
LLAKEDR.RIL EY
K
EM O T O R PLEXCT.SCHOOL DR.
212
212
212
15
15
R
D.CROSSROA D S
BL V D
166.B L
EBLUFFCE167.BV D .
168.
166. DECLARATION DR.
167. ROOSEVELT DR.
168. COLUMBIA LA.
E RSED G EDR.APPLETREE LA.I
AGES.W.V
L
LDR.18 18
17
17
1414
18NORTHNorth
60 (95) 675 (600)570 (360) 90 (100)
220 (200)
65 (90)
(280) 245
(260) 200
(475) 240 (110) 80 (785) 385 (250) 380 60 (55) 0 (5)65 (270) 5 (10)
1130 (710)
35 (90)
(5) 5
(955) 615
(215) 170 (5) 10 (5) 5 (5) 5 *
“Trap” Right25 (35) 45 (10)20 (20) 145 (135)
1045 (815)
10 (35)
(120) 175
(995) 670
(35) 10 (145) 95 (40) 10 (200) 145 *
*
*
**
*
*
**
**20 (25) 675 (375)320 (380) 560 (475)
165 (200)
200 (525)
(205) 70
(330) 80
(440) 110 (260) 75 (865) 485 (225) 130 520 (260) 505 (395) 510 (385)
15 (15) (745) 345 (1085) 450 *
*
*
*
*
*
SRF No. 6098
May 2011
Year 2030 Build Conditions - Chanhassen 2030 Comprehensive Plan Land Uses
Lyman Boulevard Phase III Analysis Update
Carver County
Figure 4H:\Projects\6098-P3\TS\Figures\Fig 4_Year 2030 Volumes.cdr[21,000]
[24,000]
[8,700]
[22,000]
LEGEND
XX
(XX)
- A.M. Peak Hour Traffic Volumes
- P.M. Peak Hour Traffic Volumes
- Average Daily Traffic
- Signalized Intersection
- Side-Street Stop Controlled
- Future Roadway
- For Future Roadway
[X,XXX]
[23,000]
[24,000]
[7,000]
*
[5,400]
[15,000]
[18,000]
[11,400]
[4,600]
[4,900]
[10,800]
ATTACHMENT A
REGIONAL/LIFESTYLE CENTER LAND USE FORECAST REVISIONS
Previous forecasts were prepared using land use assumptions obtained from the Chanhassen
2005 AUAR. This planning document included only residential land uses for parcels in the
southwest quadrant of the intersection of Lyman Boulevard and Powers Boulevard. The City of
Chanhassen 2030 Comprehensive Plan has specified this area could be developed with a mix of
retail and office land uses. The county has provided direction to prepare revised traffic forecasts
and operations analysis assuming retail and office land uses.
The parcels to be updated for the traffic forecasts were first identified using the Carver County
Property Assessment website. This investigation showed that the area to be developed in the
southwest quadrant of the Lyman Boulevard and Powers Boulevard is approximately 116 acres,
as shown in Figure A.1.
Figure A.1
Regional/Lifestyle Center Land Use
RReeggiioonnaall//LLiiffeessttyyllee CCeenntteerr
EEsstt.. PPrrooppeerrttyy SSiizzee
111166 AAccrreess
The direction provided by the city included the following assumptions:
The developable land area of these parcels should be reduced by 15 percent to account
for roadway right-of-way and ponding requirements.
The remaining land was to be divided into 50 percent retail and 50 percent office land
uses.*
Both retail and office land uses were to assume 0.3 floor area ratios (FAR).
*See Attachment B for a high level planning assessment of a 100 percent retail land use assumption for the Regional/Lifestyle
Center development.
These computations resulted in estimates of approximately 644,000 square feet each of retail and
office building sizes. Tables A.2 and A.3 summarize these estimates.
Table A.2
Developable Land Area
Land Area Percent Acre sqft
Size 100% 116 5,052,960
ROW/Ponding 15% 17 757,944
Developable 85% 99 4,295,016
Table A.3
Building Size Calculations
Development Size Percent Land (sqft) FAR Building
(sqft)
Developable Area 100% 4,295,016 Commercial 50% 2,147,508 0.3 644,252
Office 50% 2,147,508 0.3 644,252
The revised land use and building size estimates were converted to units of retail and non-retail
employment, which are used as inputs to the Twin Cities Regional Travel Demand Model as
modified for the Carver County Roadway Systems Plan. Typical factors of two retail employees
per thousand square feet of commercial space and three office employees per thousand square
feet of office space were used to develop these estimates. Table A.4 shows the resulting
employee totals estimated for this development.
Table A.4
Regional/Lifestyle Center – Year 2030 Employment Estimates
Land Use Type Building
(sqft)
Employees
per 1000 sqft
Retail
Employees
Non-Retail
Employees
Commercial 644,252 2.0 1,289
Office 644,252 3.0 1,933
This revised land use information was updated in the Twin Cities Regional Travel Demand
Model as modified for the Carver County Roadway Systems Plan. The trips generated in the
travel demand model showed for both AUAR and regional/lifestyle center land uses are shown in
Table A.5.
Table A.5
Year 2030 Trip Generation Summary
Forecast Scenario AM Peak (vph) PM Peak (vph) Daily Trips
AUAR 630 705 7,900
Regional/Lifestyle Center 1,430 2,860 28,600
The direction of approach for these trips was identified for year 2030 conditions, and is shown in
Figure A.2.
Figure A.2
Direction of Approach (Year 2030 Conditions)
The resulting trips were substituted for the trips generated by residential land use in previous
forecasts. Additional consideration was given to the peak hour percent of daily traffic and the
directional distributions of the retail and office vehicle trips. The resulting daily volume
forecasts and peak hour traffic volumes to be analyzed in the operations analysis are provided in
Traffic Memorandum in Figure 4.
ATTACHMENT B
PLANNING LEVEL ANALYSIS OF REVISED LAND USE ASSUMPTIONS
As detailed in Attachment A, previous forecasts prepared for this study assumed the land use
assumptions obtained from the Chanhassen 2005 AUAR, which included only residential land
uses for parcels in the southwest quadrant of the intersection of Lyman Boulevard and Powers
Boulevard. The City of Chanhassen 2030 Comprehensive Plan has specified this area could be
developed with a mix of residential, retail and office land uses. As directed by the city, the
updated traffic forecasts assumed a land use breakdown of 50 percent retail and 50 percent
office land uses (see Attachment A) in the absence of a current development plan for the
Regional/Lifestyle Center development. The following summarizes a high level planning
assessment of a 100 percent retail land use assumption for the Regional/Lifestyle Center
development.
Traffic Volume Forecasts
A land use assumption of 100 percent retail for the Regional/Lifestyle Center development
would have the following impact on the traffic volume forecasts:
Daily trip generation at the site would increase by 8,000 to 15,000 (over previously
reported).
Forecast daily volumes on the site access road (across from the north ramp on Powers)
could be expected to increase from 15,000 to 20,000-25,000.
Forecast daily traffic volumes at the north site access at Lyman (across from Sunset)
could be expected to increase from 5,400 to potentially to 7,500-10,000.
Traffic Operations Analysis
The increase in trips would have an impact to the LOS and recommended improvements. The
following summarizes the potential impacts with many of them extending beyond the current
Lyman Boulevard reconstruction project limits (see Figure B.1):
The most likely impacted area would be Powers Boulevard at the TH 212 North Ramp
intersection.
Dual eastbound right-turns would likely be needed.
A dual lane off-ramp would likely be needed.
An additional southbound thru lane (extended left-turn lane at TH 212 South Ramp
intersection) would also likely be needed.
Dual eastbound left-turns would likely be needed at the Lyman Boulevard/Powers
Boulevard intersection. This would also impact the westbound approach to the
intersection.
An additional northbound lane between the TH 212 North Ramp and Lyman Boulevard
would likely be needed. This additional lane would serve as an extended left -turn lane
for northbound approach to Lyman Boulevard.
It is very unlikely that the general number of lanes (4-lane) on Lyman Boulevard would
change.
In the absence of a detailed development plan for the Regional/Lifestyle Center development, a
50 percent retail and 50 percent office land use breakdown is a reasonable assumption given the
current economic environment of the southwest metro region. Assuming the 100 percent retail
land use, which is a worst case scenario, would likely require additional improvements beyond
the Lyman Boulevard improvement project, as well as other improvements to Powers Boulevard
and to the MnDOT ramp.
These additional improvements (see Figure B.1) extend beyond the current Lyman Boulevard
project limits which include the Lyman Boulevard/Powers Boulevard intersection, but do not
extend south on Powers Boulevard to the TH 212 ramp intersections. Additionally, the project
budget does not allow for these additional construction costs of $4-6 million dollars (see Figure
B.1). The 100 percent retail land use scenario requires high intensity commercial development
(1.3 million square feet), which has no immediate development plan, and would require
overbuilding of the roadway network. We would not recommend these additional improvements
as they are cost prohibitive and beyond the scope of the current county project.
Figure B.1
100% Retail Land Use – Additional Improvements & Associated Costs