DALLAS CENTER MASTER PLAN - downtown streetscape + green corridor
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DRAFT
March 4th, 2021 1:45 PM
DOWNTOWN LOOKING EAST HERITAGE PARK LOOKING WEST
DALL AS CENTER MASTER PL AN
downtown streetscape + green corridor
Dallas Center, Iowa
March 24th, 2021
This plan, undertaken by ISG in 2021 was prepared
exclusively for the City of Dallas Center.
All content © ISG 2021
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 1
February 2021
DRAFT
March 4th, 2021 1:45 PM
INTRODUCTION
project overview
PROJECT OVERVIEW R EG I O NAL CO N T E X T | R ACO O N R I V ER VALLE Y
Dallas Center’s Downtown Streetscape + Green Corridor Master Plan creates
a community driven vision and guide for future improvements along Walnut
Street and adjacent public amenities in Dallas Center, Iowa. Centrally located
for approximately nine blocks, the Walnut Street corridor connects the central PERRY
HIGHWAY 169
downtown core to many of Dallas Center’s public parks, including Mound Park,
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CO
Heritage Park, and Memorial Park, as well as the major regional trail system,
ON
Raccoon River Valley Trail.
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VA
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The plan provides an understanding of existing conditions and design direction
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for improvements along the corridor in order to improve civic infrastructure,
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promote economic development/redevelopment, increase vitality of tourism GRANGER
in the area, and inspire greater connections throughout the community to this
MINBURN
central corridor. This plan helps to establish priorities and phasing for public-
SA
YL
sector improvements, while providing direction for potential private-sector
OR
VI
improvements.
LL
E
HERROLD
LA
KE
DALLAS CENTER
HIGHWAY 4 4 GRIMES
SPECIFIC GOALS + OBJECTIVES 6 MILE 5 MILE 4 MILE 3 MILE 2 MILE 1 MILE
OF THE PLAN INCLUDE:
• Six (6) design phases to implement over the next 10 - 15 years that
prioritizes phasing based on funding availability, public safety, and city needs INTERSTATE 35
• Create enjoyable environments for a variety of users
• Generates a positive impact on the community WAUKEE
• Provide conceptual designs with realistic operations and maintenance
ADEL
considerations
80
TE
ST
A WEST DES MOINES
E R N
I NT
PROJECT TIMELINE
Meeting #1 - Meeting #2 - Meeting #3 - Meeting #4 -
Kick-off Meeting with the City Stakeholder Meeting Client Meeting XX
September 01, 2020 November 09, 2020 January 14, 2021 XX, 2021
DEFINE PROJECT CONCEPT DEVELOPMENT CONCEPT REFINEMENT FINAL PLAN DEVELOPMENT
SCOPE + PRIORITIES
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 2
February 2021
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March 4th, 2021 1:45 PM
Existing site photos?
S I T E A N A LYS I S & U N D E R S TA N D I N G
project limits + existing conditions
HIGHWAY 44
DALLAS CENTER LANDMARKS
M o un d Par k
H e r i t a g e Par k
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CO
LAUREL STREET M e m o r ial Par k
ON
RIV
Dalla s C e n t e r P o o l
ER
VA
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Dalla s C e n t e r / G r im e s P ub li c S c h o o l
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Dalla s C e n t e r C i t y H all
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MAPLE STREET
Dalla s C e n t e r P o li c e D e p ar t m e n t
LK)
N WA
ILE ( 10 MI U S P o s t al S e r v i c e
1/2 M
R oy R E s t l e M e m o r ial L ib r ar y
ASH STREET
Dalla s C e n t e r M e di c al A s s o c ia t e s
ALK)
M IN W
I L E (5
1/4 M
LEGEND
WALNUT STREET
M aj o r R o a d T h o r o u gh f ar e s
Par k s + O p e n S p a c e
1/4 + 1/2 Mil e Walk R a dii
f r o m Walnu t + 14 t h S t In t e r s e c t i o n
SYCAMORE STREET
S t r e e t Tr e e O p p o r t uni t y
P r oj e c t L imi t s B o un dar y
CHERRY STREET
NORTH VIEW DRIVE
KELLOGG AVENUE
HATTON AVENUE
PERCIVAL AVENUE
R AVENUE / 13TH STREET
15TH STREET
14TH STREET
12TH STREET
11TH STREET
10TH STREET
9TH STREET
CIRCLE DRIVE
VINE STREET
N
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 3
February 2021
DRAFT
March 4th, 2021 1:45 PM
S I T E A N A LY S I S
existing site photos
MEMORIAL PARK ENTRY FROM WALNUT ST
MEMORIAL PARK
HERITAGE PARK
D OW N T OW N WA L N U T S T S T R E E T S C A P E 5 -WAY IN T E R S E C T I O N AT 14 T H S T + WA L N U T S T D OW N T OW N A L L E Y S PA R K S + G R E E N S A P C E
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 4
February 2021
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CO
LAUREL
STREET
DRAFT
ON
RI V
ER
March 4th, 2021 1:45 PM
COMMUNI T Y ENGAGEMEN T
VA
LEL
YT
MAPLE
STREET
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IL
DALLAS CENTER ASH ST
REET
stakeholder input
DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN DALLAS
ITS DOWNTOWN
CENTER
CT LIM STR EETSCAPE
PROJE + GREEN COR
RIDOR MAS
DALLAS
CENTER TER PLAN
WHAT IS THE DOWNTOWN MASTER PL AN? DOWNTOWN
STREETSCAPE
+ GREEN CORRIDOR
MASTER PLAN
Hall
r Ci t y
nd C ente
RAC
ege Dall as t
rk s L
LAUREL
OON
STREET
tmen
ma Dep ar
This project will create a long-term, multi-phase vision for Walnut Street focusing on priorities for downtown streetscape
RIVE
L and Poli ce
ente r
ent er
R VALL
C
C Dall as
Dal las
EY
improvements and enhancing green corridor connections to the City’s parks and other assets. Concepts will be developed
MAPLE
TRA
STREET
Ser vice 1
IL
Park
Mou nd Pos t al
US
oria l
L ibra
ry and vetted before being refined into the final Master Plan. Projected costs, priorities, phases for implementation, and WALNU WALNUT STRE
ET VIEWS
Mem
T STREET
ASH STREET
age Park E s tle
Heri t Roy R soci ate s potential funding sources will support the plan development.
ic al A s
Mem
oria l
Park
Dall as
C ente
r Med
WALNUT
STREET N 2
AN
STER PL
TER
r Pool
C ente
VISIONING WORKSHOP AGENDA
ol
Dall as
OR MA
Scho
CEN EEN CORRID
ic
e s Publ SYCAMORE
r / Grim
STREET
LAS ETSCAPE + GR
C ente
Dall as
DALOW
DATE + TIME: Monday, November 9th | 12:00 noon - 1:30 pm
CHERRY
AVENUE
STREET
AVENUE
N STRE
AVENUE
KELLOGG
LOCATION: Zoom Virtual Meeting
PERCIVAL
15TH STREET
HATTON
14TH STREET
DOWNT
VINE STREET
13TH STREET
12TH STREET
11TH STREET
10TH STREET
9TH STREET
NORTH
DRIVE
VIEW DRIVE
PROJE
CT LIM
ITS
EET
CIRCLE
STR
INTRODUCTIONS
Architecture
REL
+ Engineering
Dallas Center, + Environmental
ISG Project: Iowa | October 14, + Planning
LAU
24314 2020
SITE CONTEXT UNDERSTANDING + REVIEW
0 50 100
1” = 100‘ 200 FEET N
(on 24” x 300
36” sheet)
DALLAS
CENTER
| DOWNTOWN
STREETSCAPE
+ GREEN
CORRIDOR
MASTER
1 Waln
PLAN
ut Street
• WALNUT STREET CORRIDOR AERIAL MAP
| Mound
Park SYCAMO
STR
EET
RE STRE
MAPLE Review current conditions and connections within Dallas Center ET 3
• STREET VIEWS 2 Moun
d Park
Review wants and needs at the pedestrian level
• PRECEDENT ELEMENTS TO CONSIDER
EET 3 Sycam
STR
ASH Help us decide on the right mix of design elements for Dallas Center ore Street | Moun
d Park
DRIVE
VIEW
NORTH
GOAL S OF TODAY ’S MEE TING
EET
DRIVE
STR
LNUT
WA • Identify current issues impacting downtown
EET
CIRCLE
• Identify areas of importance + where we want to focus our efforts
STR
EET
CHERRY
PLEASE TAKE OUR
UE
• Understand what is currently working + not working
STREET
9TH
STR
EET
RA • Determine what business owners + residents would like to see
10TH
CO
G AVEN
ONLINE SURVEY AT:
STR
O N
for the future of this area
EET
EET N FEET
E STR RIV
11TH
AMOR
450
UE
STR
ER
SYC
EET
VA 300 Dallas Center,
LL 150 ISG Project: Iowa
12TH
75 sheet)
STR
EY 0 (on 22”
x 34” 24314
AVENUE
EET
L AVEN
TR 1” = 150‘ November
A 09, 2020
13TH
IL
STR
https://www.surveymonkey.com/r/7MQJYBP
EET
UE
KELLOG
14TH
AVEN
H STR
UE
EET
Y STR
CHERR
AVEN
ON
15T
HATT
UE
PERCIVA
REET
CIVAL
DALL AS
AVEN
CENTER
HATTON
DOWNTOW
N STREE
TSCAPE
REET
PER
+ GREEN
LOGG
CORRIDOR
MASTER
VINE ST PLAN
15TH ST
EET |
REET 2
KEL
REET
STR
VINE
14TH ST
REET
13TH ST
REET
summer 2019
ter, Iowa
s Cen 24314
Dalla ct:
ISG’s first visit to the City to learn more
12TH ST
ISG Proje
09, 2020
REET
Nov ember
11TH ST
REET
10TH ST
NORTH
DRIVE
VIEW DR
PROJE IVE
9TH ST
about the City of Dallas Center and the
CT LIM
ITS
CIRCLE
Architectur
e + Engi neering +
Dallas Cent Environm
project
er, Iowa | ental
ISG Proje October + Planning
P U B L I C P R O C E S S + CO M M U N I T Y I N V O LV E M E N T
ct: 24314 14, 2020
The Master Plan is a compilation of data gathered from a range of public and stakeholder engagement opportunities in order to identify current 0 50
1” = 100‘
100
(on 24” x
36” sheet)
200
300
FEET N
challenges and opportunities for improvement. On-site meetings were held with stakeholders, and community members were asked to participate DALLAS
CENTER
| DOWN
TOWN STR
EETSCAPE
+ GREEN
summer 2020
CORRID
in public surveys (survey results can be found on pages 5-7 of this master plan). The information gathered from these engagement sessions were
OR MASTE
City of Dallas Center approves
R PLAN
integral to the design process to identify current and future needs, define alternatives, and prioritize phasing for improvements.
ISG proposal + contract
september 2020
ISG met with key stakeholders and
held a walking meeting of the site to
gather input and identify priorities
december
125 community members had
completed the online survey monkey
2020
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 5
February 2021
DRAFT
March 4th, 2021 1:45 PM
COMMUNI T Y ENGAGEMEN T
online survey results
What is your age? What is your relationship to What types of businesses do you frequent in
Under 18 0% Downtown Dallas Center? Downtown Dallas Center? Wheredoyoutakefamilyandfriendswhenthey
visit from out of town?
19-24 4%
37%
• Bakers Pantry • Grays Lake
25-45 37%
25-45 • Handlebar • High Trestle Trail
46-59 30%
• Burnett Complex • Ledges
60+ 29%
• Breweries/wineries • Maqaquito State Park
• Farmers market • Waukee
• Art Fest • Hilltop
• State Fair • Pella
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
• Valley Junction • Perry
HowfrequentlydoyouvisitDowntownDallasCenter? I live in/near Downtown I attend events in Health Services 29% Restaurants 84%
Dallas Center 30% Downtown Dallas • Shopping center • Adel
Never 1% Specialty Retail 55% Bars 44%
Center 53%
I live in Dallas • Bowling • West Des Moines
Once or twice a year 5% Home and Other 20%
Center 70% I shop in Downtown
50%
Several times
Monthly 13%
I work in Downtown
Dallas Center 56% Automotive 13% • Scenic drives • Grimes
a week Weekly 31% Dallas Center 12% I play/recreate in • Parks • Minburn
Downtown Dallas
Several times a week 50% I own a business in • The Machine Shed • Granger
Center 30%
Downtown Dallas
• Brenton Arboretum • Madrid
Center 9% Other 6%
How long have you been going to WhenyouvisitDowntownDallasCenter,howfarfrom Onanaveragevisit,howmuchtimedoyouspendin
Downtown Dallas Center? your destination do you usually park your car? Downtown Dallas Center?
Never been downtown 1% In front of the In and out, 15 minutes
destination 63% or less 47% The City has done a great job making
Less than 1 year 5%
the streets inviting. The south side
49% 1-5 years 19% 63% 1 block 13%
50%In and out,
1-4 hours 45%
business owners have done a fantastic
More than In front of the 2-3 blocks 5% 15 minutes
More than 4 hours 8%
20 years 6-10 years 8% destination
or less job with their store fronts and
More than three blocks 1%
11-20 years 18%
marketable businesses.
No car needed, I walk
More than 20 years 49% to downtown 18%
No car needed, I bike
to downtown 0%
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 6
February 2021
DRAFT
March 4th, 2021 1:45 PM
COMMUNI T Y ENGAGEMEN T
online survey results
DoesDowntownDallasCenterincludeactivitiesanda Whattypesofamenitiesdoyouseeinotherplacesthatyou What do you do for fun in
welcomingenvironmentforthefollowingagegroups? wish were in Downtown Dallas Center? Downtown Dallas Center? RankyourprioritiesforthefutureofDowntown.
1 More shopping
2 More businesses and jobs
3 More dining options
4 More entertainment
5 Preserve historical buildings
6 More parks and public spaces
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 7 More housing
Ages 19-24 Ages 25-45 Bike and scooter rentals 17% Pet friendly businesses Sightseeing 7% Shopping 38%
Yes, plenty 12% Yes, plenty 36% 26% 8 Increased sidewalks and trail access
Sidewalk cafes 52% Visit Parks 66% Other Community Events 54%
No, not enough 48% No, not enough 43% Wayfinding signs
Public art 44% and maps to local Attend Festivals 70% Other Entertainment 18%
9 Safety
Unsure 39% Unsure 21% destinations 20%
More trees and plants 56% Restaurants 75% Other 13%
Ages 46-59 Ages 60+ Benches, litter
Public WiFi and phone Bars 41%
Yes, plenty 24% Yes, plenty 20% receptacles, and public
charging stations 34%
125
bathrooms 49%
No, not enough 35% No, not enough 43% Little free libraries 11%
Other 15%
Unsure 41% Unsure 38%
Total Survey Responses
Rate your overall satisfaction with Are you willing to join groups or organizations Areyouwillingtodonatetime,money,andresources
Downtown Dallas Center. to support Downtown? or skills to Downtown projects?
Excellent 10% Yes 45% Yes 42%
Above average 15% No 38% No 58% Excited to see new business coming to
52%Average
Average 52%
45% Yes
I’m already involved in
other groups 17%
58% No
DC! Love the coffee shop!
Below average 20%
Poor 3%
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 7
February 2021
DRAFT
March 4th, 2021 1:45 PM
COMMUNI T Y ENGAGEMEN T
online survey results
Please rate your overall satisfaction with the following in Downtown Dallas Center.
1% 4% 3%3%
4% 2% 12% 7% 3% 8%
Excellent 10% 20% 21%
17%
Above average
29%
21%
The Seasonal
Average Streets + Job Committee does a great
33% Traffic 10% Dining
Below average
Sidewalks Opportunities job of keeping the town
41%
Poor 39% 29% active and engaged.
N/A 35% 48%
3% 4% 1% 2% 4% 7% 6% 5% 3%
14% 7% 13%
7% 4% 1%
12% 23%
43%
27%
36% 15%
Year-Round Downtown as Utility 33% Walkability +
Parking 27%
Activities a Destination Infrastructure Accessibility
32%
50% 11%
35% 36%
39% 40% I wish downtown were
5% 3%
more attractive and
5% 7% 3% 2% 1% 7% 14% 6% 1%
2% 3% 4%
25% 9% 7%
15%
better served bicycle
29%
30% riders, people visiting
Sense of
and living in Spurgeon
Shopping Parks + Seasonal 30%
31% Safety Manor, swimmers,
Open Space Events 27% Community
30%
Casey’s and Dollar
39% 44%
49%
General customers, and
41% 31%
families visiting the
ball parks at the
11% 4% 5% 4% 3% 4%
12%
14%
20%
8%
12% Burnett Recreation
6% 3% 24% 1% Complex.
5%
Business Housing Housing
15% Entertainment
Environment Quality Affordability 32%
25% 10%
42% 41%
39% 40%
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 8
February 2021
DRAFT
March 4th, 2021 1:45 PM
WALN U T S T R EE T PL AN
overall plan
12TH STREET
HATTON AVENUE TO 14TH STREET
page 10
RACOON RIVER VALLEY TRAIL + HERITAGE PARK
page 11
WALNUT STREET
HATTON AVENUE
15TH STREET
14TH STREET
13TH STREET
11TH STREET
10TH STREET
FEET N
0 150 300 600
1” = 300’
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 9
February 2021
DRAFT
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WALN U T S T R EE T PL AN
hatton avenue to 14th street
LEGEND
P E D E S T R I A N C R O S S IN G IM P R OV E M E N T S
• roadway geometry changes to reduce crossing width and vehicular
conflict points
• highly visible crosswalk striping proposed
• slows traffic by physically and visually narrowing roadway
• improved ADA accessibility
D I AG O N A L PA R K IN G W I T H P E R M E A B L E PAV E R S
• permeable street pavers are proposed downtown to provide a change
of material visually drivers cues to a downtown environment and
slows traffic, while also collecting, slowing, and filtering stormwater
T R A F F I C C IR C L E AT 5 -WAY IN T E R S E C T I O N
• provides organized and continuous traffic flow
• increase pedestrian safety at designated crossing areas
Smoke house BBQ
STREET TREE CANOPY
K&E Distributing
Vacant building
Vacant building
Corn Tavern
• street tree planting pits provided at removal of hard surfacing
• excavate down 4’-0” and replace with clean local topsoil
Twisted
• add new street trees throughout
A1
L A N D S C A P E / G R E E N S PAC E
• At-grade landscaping proposed in street tree planting pits and
pedestrian crossing points to increase amount of pervious surfacing
WALNUT STREET and soften the streetscape
G R E E N A L L E Y S & P O C K E T PA R K S
• permeable pavers are proposed for stormwater control
• smaller scaled spaces provide both interesting corridors for pedestrian
travel, and an opportunity for additional amenities such as overhead
A2 lighting or cafe seating
Dallas Mutual
Insurance Association
• public art such as murals are proposed along long blank walls
Rosalea
Secondhand Cellar
Dallas Center
Police Department
Wells Fargo Bank
PA R K L E T S PA C E
Memorial Hall
• small, temporary seating and gathering areas provide a space for users
to experience the downtown environment during the warmer months
Dallas Center
in a flexible seating environment, while allowing for removal for
Fire Rescue
maintenance during the winter months
Korner Kone
O U T D O O R C A F E S E AT IN G A R E A S
• Strategically located adjacent restaurants to provide variety for
HATTON AVENUE
outdoor eating, while maintaining a clear walkway corridors along the
15TH STREET
14TH STREET
streetscape
WAY F IN D IN G S I G N AG E
• A consistent and clear collection of wayfinding signage is proposed to
help navigate visitors downtown, and to other amenities along Walnut
Street, particularly from the bike trail
PUBLIC ART
FEET • provides vibrancy and an opportunty to showcase local talent
N
S I T E F U R N I S H IN G S D OW N T OW N S T R E E T S C A P E S E C T I O N 0 40 80 160 • can often be incorporated into other amenties to reduce cost and
• Section elevation shown on page 12 increase functionality such as site furnishings and wayfinding
PedestrianLighting Litter + Recycling Receptacles 1” = 80’
C I T Y H A L L M E M O R I A L P L A Z A IM P R OV E M E N T S
Benches Tree Planter Guards • Provide a design plaza space incorporating additional seating
surrounding the recently relocated memorial
Bike Racks Cafe Tables + Chairs
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 10
February 2021DRAFT
March 4th, 2021 1:45 PM
WALN U T S T R EE T PL AN
racoon river valley trail + heritage park
LEGEND
O U T D O O R PAV IL I O N
• multipurpose outdoor park pavilion to host events and serve as
performance space
I C E R IN K + WA R M IN G H O U S E
• junior olympic size
• doubles as lawn games area in warm weather
• fire pits, skate rental, seasonal lighting
G R E AT L AW N
• multipurpose amphitheater and sodded or synthetic lawn space
P E D E S T R I A N D R O P - O F F L O C AT I O N
• one-way drop off location to serve park amenities
WALNUT STREET
T R A IL C R O S S IN G IM P R OV E M E N T S
• LED crosswalk signage
• curb extensions
• MUTCD striping
E X E R C I S E E Q U IP M E N T
• located at trailhead for cyclists to work on upper body strength
P E D E S T R I A N C R O S S IN G IM P R OV E M E N T S
• roadway geometry changes
• crosswalk striping
• traffic slowing
• improved ADA accessibility
D I AG O N A L PA R K IN G
• expand parking options to serve adjacent cycling trail
T R A F F I C C IR C L E AT 5 -WAY IN T E R S E C T I O N
• organize traffic flow
• increase pedestrian safety
T R E E C A N O P Y IM P R OV E M E N T S
• create outdoor room with tree allee canopy
13
• street tree continuation of downtown
TH
• screening of residential adjacent park
14TH STREET
12TH STREET
ST
RE
PUBLIC ART
ET
• potential opportunity to create iconic scale murals on grain
bins
SYCAMORE STREET
S I T E F U R N I S H IN G S FEET N
0 40 80 160
PedestrianLighting Bike Racks Tree Planter Guards
1” = 80’
Benches Litter + Recycling Receptacles Bike Repair Station
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 11
February 2021DRAFT
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WALN U T S T R EE T PL AN
streetscape typology
L A N D S C A P E / G R E E N S PAC E
D I AG O N A L PA R K IN G W I T H
P E R M E A B L E PAV E R S T R A F F I C C IR C L E AT 5 - WAY IN T E R S E C T I O N
PA R K L E T S PA C E
STREET TREE CANOPY
S U B S U R FA C E S T O R M WAT E R
A1 A2
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 12
February 2021DRAFT
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WALN U T S T R EE T PL AN
bird’s-eye view
P E D E S T R I A N C R O S S IN G IM P R OV E M E N T S D I AG O N A L PA R K IN G W I T H P E R M E A B L E PAV E R S STREET TREE CANOPY CURB E X TENSIONS BENCHES
T R A F F I C C IR C L E AT 5 - WAY IN T E R S E C T I O N L A N D S C A P E / G R E E N S PAC E PA R K L E T S PA C E S T R E E T L I G H T IN G TREE PITS
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 13
February 2021DRAFT
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H E R I TA G E PA R K
bird’s eye view
I C E R IN K O U T D O O R PAV IL I O N STREET TREE CANOPY CURB E X TENSIONS S E AT IN G
WA R M IN G H O U S E G R E AT L AW N T R E E C A N O P Y IM P R OV E M E N T S T R A F F I C C IR C L E AT 5 - WAY IN T E R S E C T I O N
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 14
February 2021DRAFT
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PRECEDENT IMAGERY
streetscape elements | site furnishings
F O R M S + S U R FAC E S | C O R D I A S E R IE S V is t a C hair, C o lumn Tab l e
K E Y S T O N E R ID G E | C A R S O N S E R IE S P e nn Tab l e C ar s o n L i t t e r R e c e p t ac l e C ar s o n B ik e R ac k
A N OVA F U R N I S H IN G S | E X P O S I T I O N S E R IE S Tan d e m B ik e R a c k
S E A T I N G | T R A S H + R E C Y C L I N G R E C E P TA C L E S | B I K E R A C K S L AY E R S O F L I G H T I N G
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 15
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PRECEDENT IMAGERY
streetscape elements
MURALS GREEN ALLEYS
R OA DWAY S T O R M WAT E R C A P T U R E
SCULPTURE
PA R K IN G L O T S T O R M WAT E R C A P T U R E
PAV I N G O U T D O O R C A FE S E AT I N G PUBLIC ART GREEN INFR ASTRUC TURE TRAFFIC CIRCLE
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 16
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circulation + natural amenity elements
STREETSCAPE
T R A IL S
WAY FI N D I N G BIKE TRAILS + E X PA N D E D PA R K I N G A N D N AT U R A L I Z E D LO W FISHING OVERLOOK / PIER
P E D E S T R I A N C I R C U L AT I O N S T O R M WAT E R C A P U T E A R E A S MAINTENANCE AREAS
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 17
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park elements
SPORT COURT PL AYGROUND N AT U R A L P L AY S C A P E S ICE RINK O U T D O O R A M PH I T H E AT ER
E X PA N S I O N + R E S U R FA C I N G
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DALL A S CEN T ER MA S T ER PL AN
building typologies + facade improvements
DOWNTOWN BUILDING O U T D O O R PAV I L I O N WARMING HOUSE TRAILSIDE SMALL BUSINESSES CO M M U N I T Y B U I L D I N G
FAC AD E I M PR OV E M EN T S
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 19
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downtown corridor plant palette
MA LU S ‘ S PR I N G S N OW ’ C ER C I S CA NA D EN S I S Q U ER C U S B I C O LO R G I N KG O B I LO BA ‘AUTU M N G O LD ’ OSTRYA VI R G I N IA NA
S N OW C R A B A P P L E EASTERN REDBUD S WA M P W H I T E OA K AU T U M N G O L D G IN KG O IR O N WO O D
‘Spring Snow’ is a dense, upright, white-flowered crabapple that A small to medium height tree, rosy pink flowers appear in April. A striking tree with attractive peeling bark, especially on young Superb shade tree is a male non-fruiting selection. Unique fan- A tough understory tree with beautiful birch-like leaves, grayish
typically matures over time to 20-25’ tall by 15-20’ wide. This is a Redish-purple leaves chane to dark green then yellow t oform a trees. The lustrous, lobed leaves have a two-tone appearance, shaped foliage turns golden yellow in the fall. Slow growing with an brown flaky bark, and attractrive hop-like fruits. Resistant to many
fruitless crabapple. Single, fragrant, white flowers bloom in spring. spreading crown. dark green on top with a silvery-white underside. Fall color is an upright branching form. disease and insect problems.
orange-gold to yellow in mid-autumn. An excellent shade tree for
any landscape.
EC H I NAC EA PU R PU R EA R H U S A R O MATI CA PHYS O CA R PU S O PU LI FO LI U S ‘ M O N LO ’ PA N I C U M VI R GATU M ‘ S H ENA N D OA H ’ S PO R O B O LU S H ETER O LEPI S
P U R P L E C O N E F L OW E R ‘ G R O - L OW ’ S U M A C D I A B L O N IN E B A R K S H E N A N D OA H S W I T C H G R A S S P R A IR IE D R O P S E E D
Hardy, drought-tolerant, purple coneflower will provide color in This fragrant sumac cultivar is a dense, low-growing, rambling The stunning deep purple foliage of this versatile shrub makes it a Prized for its unmatched foliage color. Fast growing green leaves A fine-textured grass for the landscape with tall, slender stalks
the summer and structure to planting beds. Mixed with native shrub which spreads by root suckers and typically grows only to standout in the garden. Plant en masse to create a richly colored, emerge with red tips in spring, darkening through summer, and that display airy, remarkably fragrant, late summer panicles. Dense,
grasses, the perennial flower will seed freely and seed heads will 1-2’ tall but spreads to 8’ wide. Trifoliate, medium green leaves dense hedge or screen. Profuse creamy white flower clusters turning burgundy in fall. Airy reddish-pink flowers in summer. mounded foliage turns deep copper-gold in fall. Attractive accent,
provide a sculptural form and food for gold finches and other birds turn attractive shades of orange and red in autumn. Leaves and adorn the foliage in summer. Foliage can become green in high heat Use for mass background plantings or in containers. Herbaceous or easy care ground cover, if planted in mass. Long-lived and
in the winter, A variety 18-36” tall is suitable in this context. twigs are aromatic when bruised (hence the species name). Fruit is or partial shade; tolerates moderate drought in cooler summer perennial. trouble free. Rarely self-seeds. Deciduous.
attractive to wildlife. regions. Deciduous.
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 20
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DALL A S CEN T ER MA S T ER PL AN
street tree palette
OVERSTORY TREES MID-CANOPY TREES UNDERSTORY TREES
Greater than 1,600 square feet of canopy at maturity, typically reach a diameter-at-breast- height Approximately 900 square feet of canopy at maturity, typically reach a diameter-at-breast-height of Understory trees, approximately 400 square feet of canopy at maturity, typically reach a diameter-
in excess of 25 inches and a height in excess of 60 feet at maturity. The spacing requirement for 10-25 inches and a height of 30-60 feet at maturity. The spacing requirement for planting is 40 feet at-breast-height of less than 15 inches and a height of less than or equal to 30 feet at maturity. These
planting is 40 feet on center between both existing and replacement trees. on center between both existing and replacement trees. trees are permitted only where site conditions do not allow the planting of overstory or mid-canopy
trees.
• Baldcypress Taxodium distichum ‘Shawnee Brave’ • Alder, Black Alnus glutinosa ‘Pyramidalis’, ’Fastigiata’
• American Smoketree Cotinus obovatus
• Catalpa, Northern * Catalpa speciosa • Alder, Manchurian Alnus hirsute ‘Prairie Horizon’
• Amur Maackia Maackia amurensis ‘Summertime’
• Dawn Redwood Metasequoia glyptostroboides ‘Gold Rush’ • Amur Corktree Phellodendron amurense ‘Eyestopper’, ’His Majesty’,
• Bald Cypress ** Taxodium distichum ’Skyward’
• Elm, American/ Hybrid Ulmus Americana/Ulmus x ‘New Horizon’, ‘Accolade’ • Beech, European* Fagus sylvatica ‘Cuprea’, ’Asplenifolia’, ‘Riversii’
• Crabapple (misc. cultivars) Malus sp. 1/2 inch or smaller, non-pendulous
• Ginkgo (male only) Ginkgo biloba ‘Samurai’, ‘Saratoga’, ’Shangri-la’ • Birch, River Betula nigra ‘Heritage’, ‘Dura-Heat’
• Dogwood, Flowering* Cornus florida
• Hackberry, Common Celtis occidentalis ‘Prairie Pride’, ‘Chicagoland’ • Birch, Yellow Betula alleghaniensis
• Dogwood, Corneliancherry Cornus mas ‘Golden Glory’ Dogwood, Kousa* Cornus kousa
• Hickory, Bitternut* Carya cordiformis • Black Gum/Tupelo Nyssa sylvatica ‘Snow Flurries’, ‘Wildfire’
• Dogwood, Pagoda* Cornus alternifolia
• Hickory, Mockernut * Carya tomentosa • Buckeye * Aesculus sylvatica ‘Autumn Splendor’
• Ginkgo ** Ginkgo biloba (male only) ‘Chi Chi’
• Hickory, Shagbark * Carya ovata • Buckeye, Red * Aesculus pavia
• Goldenraintree Koelreuteria paniculata ‘Fastigiata’, September’
• Honeylocust Gleditsia triacanthos inermis ‘Northern Acclaim’, ’Trueshade’ • Buckeye, Ohio* Aesculus glabra ‘Sunset’
• Hawthorn, Thornless Cockspur Crataegus crus-galli inermis
• Horsechestnut ** Aesculus hippocasteana ‘Baumanii’ (seedless) • Butternut* Juglans cinerea
• Hawthorn, Washington* Crataegus phaenopyrum
• Kentucky Coffeetree ** Gymnocladus dioicus PrairieTitan’,‘Espresso’(seedless) • Catalpa, Purple* Catalpa x erubescens ‘Purpurea’
• Hawthorn, Winter King Green* Crataegus viridis ‘Winter King’
• Linden, Silver* Tilia tomentosa ‘Sterling’(Japanese beetle resistant) • Elm, Lace Bark Ulmus parvifolia ‘Bosque’
• Hoptree/Waferash* Ptelea trifoliata
• Locust, Black Robinia psuedoacacia ‘Chicago Blues’ • Hardy Rubbertree Eucommia ulmoides
• Hornbeam, American. (Musclewood) Carpinus caroliniana ‘J.N. Upright’, ‘Palisade’
• Maple, Freeman *** Acer x freemanii ‘Marmo’, ’Firefall’ (seedless) • Hophornbeam, American/Ironwood Ostrya virginiana
• Lilac, Japanese Tree Syringa reticulata ssp. reticulata ‘Ivory Silk’, ‘Summer Snow’ Lilac, Peking
• Maple, Sugar Acer saccharum ‘Crescendo’, ‘Flax Mill Majesty’ • Hornbeam, European Carpinus betulus ‘Fastigiata’, ’Frans Fontaine’
(China Snow) Syringa pekinensis
• Oak, Black Quercus velutina • Horsechestnut, Red * Aesculus x carnea ‘Ft. McNair’, ’Autumn Splendor’
• Linden, Mongolian (+),* Tilia mongolica ‘Harvest Gold’
• Oak, Bur* Quercus macrocarpa • Japanese Pagodatree Sophora japonica ‘Regent’, ‘Halka’
• Magnolia, Edith Brogue Magnolia grandiflora ‘Edith Brogue’
• Oak, MacDaniel’s Quercus x macdanielli ‘Heritage’ • Katsura tree Cercidiphyllum japonicum ‘Red Fox’
• Magnolia, Sweetbay Magnolia virginiana
• Oak, Northern Red Quercus rubra • Linden, American (+),* Tilia americana
• Maple, Amur Acer ginnala ‘Flame’, ‘Ruby Slippers’
• Oak, Pin* Quercus palustris • Linden, Crimean (+),* Tilia x euchlora
• Maple, Hedge Acer campestre ‘Panacek’, ’Evelyn’
• Oak, Swamp White Quercus bicolor • Linden, Littleleaf (+),* Tilia cordata ‘Shamrock’, ’Chancole’
• Maple, Korean Acer pseudosieboldianum
• Oak, White Quercus alba • London Planetree Platanus x acerifolia ‘Exclamation’, ‘Ovation’
• Maple, Shantung Acer truncatum ‘Norwegian Sunset’ Maple, Sugar ** Acer saccharum ‘Sugar
• Sweetgum ** Liquidambar styraciflua ‘Rotundaloba’ (seedless) • Magnolia, Cucumbertree Magnolia acuminata Cone’
• Sycamore Platanus occidentalis • Maple, Black Acer nigrum • Maple Tartarian Acer tartaricum ‘Summer Splendor’
• Tulip Tree Liriodendron tulipifera ‘Emerald City’ • Maple, Miyabe Acer miyabe ‘State Street’ • Maple, Trident Acer buergeranum ‘Aeryn’
• Walnut, Black* Juglans nigra • Oak, Bebb Quercus x bebbiana • Redbud, Eastern Cercis canadensis ’Rising Sun’
• Zelkova, Japanese Zelkova serrata ‘Green Vase’, ‘Village Green’, • Oak, Chinkapin Quercus muehlenbergii • Serviceberry Amelanchier sp. ‘Cumulus’,’Snowcloud’
• Oak, English* Quercus robur ‘Regal Prince’, ’Skymaster’ • Seven Son Flower* Heptacodium miconoides
• Oak, Hills/Northern Pin Quercus ellipsoidalis ‘Majestic Skies’ • White Fringetree* Chionanthus virginicus
• Oak, Sawtooth Quercus acutissima • Zelkova, Japanese ** Zelkova serrata ‘Wireless’
• Oak, Scarlet Quercus coccinea
• Oak, Shingle Quercus imbricaria
• Oak, Ware’s Quercus x warei ’Chimney Fire’, ‘Nadler’
• Turkish Filbert Corylus colurna
• Yellowwood, American Cladrastis kentukea ‘Perkins Pink’
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 21
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DALL A S CEN T ER MA S T ER PL AN
street tree palette
COLUMNAR TREES EVERGREEN SCREENING TREES PROHIBITED TREES
Canopy heights with columnar form can vary, but canopy width is typically 15-25 feet. Some of these This list is for use in buffer strips and on private property only. As a rule, evergreens require full sun and The following classes and types of trees shall not be planted on the right-of-way or as part of
cultivars may not be as hardy as the standard species. do not perform well in shade or partial shade. required landscaping. With the exception of Red Maple, it is recommended that any specific Genus/
species listed below also not be planted on private property.
• Bald Cypress Taxodium distichum ‘Shawnee Brave’, ‘Skyward’ • Arborvitae (White Cedar) Thuja occidentalis ‘Nigra’, ‘Techny’
• Ash * Fraxinus sp. (All Species & Cultivars)
• Beech, European Fagus sylvatica ‘Red Obelisk’ • Fir, Balsam Abies balsamea
• Austree Salix alba x matsudana
• Dawn Redwood Metasequoia glyptostroboides • Fir, Concolor/White Abies concolor
• Birch, White/Paper * Betula papyrifera
• Crabapple Malus sp. ‘Red Baron’,’Marilee’,‘Pink spires’ • Fir, Douglas Pseudotsuga menziesii
• Boxelder * Acer negundo
• Crabapple, Siberian Columnar Malus baccata ‘Columnari’ • Fir, Fraser Abies fraseri
• Conifers (Evergreen Species)
• Crabapple, Tschonoski Malus tschonoskii • Hemlock, Eastern Tsuga canadensis
• Cottonwood * Populus deltoides
• Ginkgo (male only) ‘Princeton Sentry’ • Pine, Limber Pinus flexilis ‘Vanderwolf’s Pyramid’
• Elm, Siberian * Ulmus pumila
• Goldenraintree Koelreuteria paniculata ‘Fastigiata’ • Pine, White Pinus strobus
• Empress Tree/Princess Tree * Paulownia tomentosa
• Hackberry, Common Celtis occidentalis ‘Prairie Sentinel’ • Red cedar, Eastern Juniperus virginiana ‘Canaertii’
• Fruit and Nut Trees over 1” (walnut, apple, etc.)
• Honeylocust Gleditsia triacanthos inermis ‘Street Keeper’ • Spruce, Norway Picea abies
• Maple, Red * Acer rubrum (All Species & Cultivars)
• Hornbeam, European Carpinus betulus ‘Fastigiata’ • Spruce, Serbian Picea omorika
• Maple, Silver * Acer saccharinum (All Species & Cultivars)
• Linden, Littleleaf Tilia cordata ‘Corinthian’ • Spruce, White Picea glauca ‘Densata’
• Mountainash * Sorbus americana
• Maple, Black Acer nigrum ‘Green Column’
• Mulberry * Morus sp. (All Species & Cultivars)
• Maple, Sugar Acer saccharum ‘Endowment’
• Multi-Stem / Clump form Trees
• Oak, Bur Quercus macrocarpa ‘Urban Pinnacle’
• Pear * Pyrus sp. (All Species & Cultivars)
• Oak, English Quercus robur ‘Rose Hill’, Regal Prince’,
• Popular * Poplus Sp. (All Species & Cultivars)
• Oak, English/White Quercus bimundorum ‘Crimson Spire’
• Olive, Russian * Elaegnus angustifolia
• Oak, Pin Quercus palustris ‘Green Pillar’
• Tree of Heaven * Alainus altissima
• Oak, Ware’s Quercus x warei ‘Regal Prince’, ’Chimney Fire’
• Trees with thorns on the main stem or lower canopy
• Sweetgum Liquidambar styraciflua ‘Emerald Sentinel’, ’Happidaze’
• Willow * Salix sp. (All Species & Cultivars)
• Tulip Tree Liriodendron tulipifera ‘Fastigiatum’
• Woody Bushy shrubs
• Zelkova, Japanese Zelkova serrata ‘Musashino’
Planting of the following species is temporarily suspended in the public row. Contact the City
Arborist for more information on the moratorium.
• Catalpa * Catalpa sp. (All Species & Cultivars)
• Linden * Tilia sp (All Species & Cultivars)
• Oak, Swamp Spanish * Quercus Palustris
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 22
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MAS TER PL AN PROJEC T PHASES
sugguested phasing plan
12TH STREET
10TH STREET
PHASE 2: HERITAGE PARK
IMPROVEMENTS
PHASE 3: GREEN ALLEYWAY
POCKET PARK IMPROVEMENTS
PHASE 4: WALNUT STREET
GREENWAY CONSERVATION
WALNUT STREET
PHASE 1: DOWNTOWN CORE
IMPROVEMENTS
HATTON AVENUE
15TH STREET
14TH STREET
13TH STREET
11TH STREET
FEET N
0 150 300 600
1” = 300’
Phasing plans are based on feedback received from surveys and public engagement. Phasing plans can be adjusted accordingly to funding or shift in priorities.
PHASE 1 - DOWNTOWN CORE P H A S E 2 - H E R I TAG E PA R K P H A S E 3 - G R E E N A L L E Y WAY P O C K E T PA R K S P H A S E 4 - WA L N U T S T R E E T G R E E N WAY
I M PR OV EM EN T S (2022 - 2024) I M PR OV EM EN T S (2022 - 2024) I M PR OV EM EN T S (2022 - 2024) (2025 - 2027)
• Remove excess paving areas • Work to identify long-term partners for key project components • Improve stormwater management with permeable pavers • Develop roadway diet from Mound Park to Memorial Park
• Add green infrastructure and soft spaces • Improve wayfinding and directional signage • Add lighting • Add pedestrian connects
• Develop thoughtful and cohesive site furnishings palette • Establish trail head parking • Introduce seating and respite areas • Provide stormwater capture areas
• Improve wayfinding and directional signage • Add events pavilion • Provide café space • Add green infrastructure along roadway
• Establish next generation tree and plantings palette • Develop permanent ice rink and sport court space • Improve safety and visibility • Maintain existing trees and plant materials
• Recommend facade and architectural visioning options • Implement bicycle parking and lockers • Establish next generation tree and plantings palette • Establish next generation tree and plantings palette
• Recommend mural and public art opportunities • Add a bicycle repair station
• Establish next generation tree and plantings palette
ISG Project: 24314 DOWNTOWN STREETSCAPE + GREEN CORRIDOR MASTER PLAN | DALLAS CENTER, IOWA 23
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