HomeMy WebLinkAbout2020-07-06-J07 Street Design Guide and Major Streets PlanAGENDA ITEM:
CITY OF WAUKEE, IOWA
CITY COUNCIL MEETING COMMUNICATION
MEETING DATE: July 6, 2020
AGENDA ITEM:Consideration of approval of a resolution approving and adopting City of
Waukee Streets Design Guide and Major Streets Plan
FORMAT:Resolution
SYNOPSIS INCLUDING PRO & CON: The purpose of the Waukee Streets Design Guide is to
create uniform design guidelines for the different levels of street classifications within Waukee. The
purpose of the Major Streets Plan is to identify and classify existing and future roadway corridors to
ensure a robust and logical roadway network within the City of Waukee. The Design Guide includes
certain design criteria, access spacing guidelines and reference charts for design options when
considering new roadway corridors and intersections. These design recommendations have been
developed with the input from City of Waukee Public Works, Development and Emergency Response
staff and are based on criteria found in the Iowa Statewide Urban Design and Specifications Manual
(SUDAS). Further, the Design Guide provides a number of traffic calming strategies that are
appropriate for the identified roadway classification. Traffic calming devices are used to encourage
motorists to adhere to posted speed limits and create a safer roadway environment for all users. These
documents will be beneficial to City staff and private development engineers as plans are developed
for improvements to existing and future roadways to ensure design uniformity while improving traffic
safety in Waukee.
FISCAL IMPACT INCLUDING COST/BENEFIT ANALYSIS:
COMMISSION/BOARD/COMMITTEE COMMENT:
STAFF REVIEW AND COMMENT:
RECOMMENDATION: Approve the resolution approving and adopting City of Waukee Streets
Design Guide and Major Street Plan.
ATTACHMENTS: I. Resolution
II. Waukee Street Design Guide
III. Major Streets Plan
PREPARED BY: Beth Richardson
REVIEWED BY: Rudy Koester RK
J7
THE CITY OF WAUKEE, IOWA
RESOLUTION 2020-
APPROVING AND ADOPTING CITY OF WAUKEE STREETS DESIGN GUIDE
AND MAJOR STREETS PLAN
IN THE NAME AND BY THE AUTHORITY OF THE CITY OF WAUKEE, IOWA
WHEREAS, the City of Waukee, Iowa is a duly organized municipality within Dallas
County; AND,
WHEREAS, on December 16, 2019, the Waukee City Council approved an Agreement
for Professional Consulting Services with Snyder & Associates, Inc., for an update to
the Major Streets Plan, including street design guidelines updates and traffic calming
design guidance (Resolution #19-455); AND,
WHEREAS, Snyder & Associates, Inc., has completed the project and City staff
recommend approval and adoption of the plan.
NOW THEREFORE BE IT RESOLVED by the City of Waukee City Council in
session this 6th day of July, 2020, that it hereby approves and adopts the City of Waukee
Streets Design Guide and Major Streets Plan.
____________________________
Courtney Clarke, Mayor
Attest:
___________________________________
Rebecca D. Schuett, City Clerk
RESULTS OF VOTE: AYE NAY ABSENT ABSTAIN
Anna Bergman
R. Charles Bottenberg
Chris Crone
Larry R. Lyon
Ben Sinclair
Page : 7 of 30Waukee Brand Standards and Style GuidePreferred Version:Use this layout when possible.Horizontal Version:This alternative treatment is available when space limitations exist.
Standalone Mark:
The W “ball” can be used alone where
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Sans Positioning Statement:
It is acceptable to use the City logo without the
positioning statement when faced with spacing
or size constraints. Contact the Marketing &
Communications Department for preferred and
horizontal logos with no positioning statement.
Waukee Street Design Guide
Prepared by:
Prepared for:
The City of Waukee
June 2020
Page : 7 of 30Waukee Brand Standards and Style GuidePreferred Version:Use this layout when possible.Horizontal Version:This alternative treatment is available when space limitations exist.
Standalone Mark:
The W “ball” can be used alone where
appropriate within the city limits on signage,
banners, monument signs, badges, pins,
promotional items and apparel.
Sans Positioning Statement:
It is acceptable to use the City logo without the
positioning statement when faced with spacing
or size constraints. Contact the Marketing &
Communications Department for preferred and
horizontal logos with no positioning statement.
Page 1
Table of Contents
Introduction .....................................................................1
Street Design Criteria Table ............................................1
Major Arterial Streets ......................................................2
Definition ............................................................................................2
Typical Cross Section ........................................................................2
Minor Arterial Streets .......................................................3
Definition ............................................................................................3
Typical Cross Section ........................................................................3
Major Collector Streets ...................................................5
Definition ............................................................................................5
Typical Cross Section ........................................................................5
Traffic Calming Designs ....................................................................7
Minor Collector Streets ...................................................8
Definition ...........................................................................................8
Typical Cross Section ........................................................................8
Traffic Calming Designs ....................................................................8
Local Streets ....................................................................9
Definition ............................................................................................9
Typical Cross Section ........................................................................9
Traffic Calming Designs ....................................................................9
Traffic Calming Measures ............................................10
Choker ..............................................................................................10
Corner Extension/Bulb-Out ............................................................10
Street Design Guide
Median Island ..................................................................................11
Speed Table / Raised Crosswalk ...................................................11
On-Street Parking ............................................................................11
Roundabout ....................................................................................12
Mini Roundabout ............................................................................12
Access Spacing Criteria ...............................................15
Intersection Selection Guidance ................................16
Intersection Type Recommendation Table .................................16
Right Turn Lane Guidance ............................................17
Traffic Impact Studies ...................................................17
Sources ..........................................................................18
Page : 7 of 30Waukee Brand Standards and Style GuidePreferred Version:Use this layout when possible.Horizontal Version:This alternative treatment is available when space limitations exist.
Standalone Mark:
The W “ball” can be used alone where
appropriate within the city limits on signage,
banners, monument signs, badges, pins,
promotional items and apparel.
Sans Positioning Statement:
It is acceptable to use the City logo without the
positioning statement when faced with spacing
or size constraints. Contact the Marketing &
Communications Department for preferred and
horizontal logos with no positioning statement.
Page 1
Introduction
This reference guide provides a working definition and description of the different levels of
street classifications with a corresponding example for Waukee. Graphic representations
are included to provide a visual guide to the typical cross-section of the indicated street
designations.
Each street type has a number of traffic calming strategies identified that are appropriate for
the identified classification. Additional information on each type of traffic calming measure,
including whether each measure may be applied retroactively to existing streets or should be
part of a street redesign or initial construction, may be found in the “Traffic Calming Measures”
section of this guide.
Finally, this guide includes certain design criteria, access spacing guidelines for the identified
categories of street and a reference chart for design options when considering new
intersections. These design recommendations have been developed with input from City of
Waukee Public Works, Development and Emergency Response staff and are based on criteria
found in the Iowa Statewide Urban Design and Specifications Manual (SUDAS).
Street Design Criteria Table
The table below presents a number of design criteria depending on the classification and
nature of the identified streets. The values listed in the table should be used as a starting point
for roadway planning and design purposes and may be modified per specific situations. Refer
to the currently adopted SUDAS and City of Waukee Standard Specifications for additional
roadway design criteria and guidance.
Design Elements Local Cul-de-
sac
Collector Arterial
Minor Major Minor Major
General
Lane Width (single lane) (ft)11 11 11 12 12 12
Two-Way Left-Turn Lanes (TWLTL) (ft)N/A N/A 12 14 14 N/A
Object setback (ft)1.5 1.5 1.5 3.0 3.0 3.0
Urban (2-lane undivided roadway)
Roadway width with parking (one-side) (ft)29 26 31 N/A N/A N/A
Roadway width without parking (ft)26 26 26 29 31 N/A
Boulevard (2 or 4-lane divided roadway)
Roadway width without parking (one side) (ft)N/A N/A N/A 181 262 413
Raised median with left-turn lane (ft)N/A N/A N/A 20 20 30
1 Based on one lane each direction
2 Based on two lanes each direction
3 Based on three lanes each direction
Page 2
Street Design Guide
Major Arterial Streets
Definition
Major arterial streets serve major centers of activity in urbanized areas and should be
used for the highest traffic volume corridors to carry most of the trips entering and leaving
the area as well as trips that bypass the city center. Additionally, arterial streets should
handle significant intra-area travel such as between central business districts and outlining
residential areas, between major inner-city communities and between major suburban
centers.
Private property access from major arterials is deliberately limited to reduce constraints
on road capacity and user mobility. Access should generally be restricted to Interstate
freeways, other major arterial streets and selected minor arterial streets. Arterial spacing
varies, but may be spaced one mile apart in highly developed areas to five miles apart in
developed urban/rural fringes.i Signalized intersection spacing should be at least every ¼
mile.
General arterial speed limits in Waukee are 45 MPH, with limited opportunities for pedestrian
and bicycle crossings. Any crossings should be part of a larger bicycle/pedestrian system
and designed to provide safe crossing opportunities without compromising arterial mobility.ii
Major arterial streets in Waukee include Hickman Rd/Highway 6 and Grand Prairie Parkway/
Alice’s Road.
Typical Cross Section
Page : 7 of 30Waukee Brand Standards and Style GuidePreferred Version:Use this layout when possible.Horizontal Version:This alternative treatment is available when space limitations exist.
Standalone Mark:
The W “ball” can be used alone where
appropriate within the city limits on signage,
banners, monument signs, badges, pins,
promotional items and apparel.
Sans Positioning Statement:
It is acceptable to use the City logo without the
positioning statement when faced with spacing
or size constraints. Contact the Marketing &
Communications Department for preferred and
horizontal logos with no positioning statement.
Page 2
Page 3
Minor Arterial Streets
Definition
Minor arterial streets connect with and augment the major arterial streets system by
increasing access to private land, neighborhoods and streets of a lower classification level
while maintaining some limits on access points. The spacing of minor arterials may vary
from ⅛ to ½ mile spacing in urban areas and up to 2 - 3 mile spacing on suburban fringes.iii
Signalized access should be spaced at least every ¼ mile.
General arterial speed limits in Waukee are currently posted at 35 MPH, with limited
opportunities for pedestrian and bicycle crossings. Crossing opportunities should be
adequately spaced and designed to allow for safe opportunities for bicycling and
pedestrian users.iv
Waukee examples of minor arterial streets include University Avenue, Westown Parkway
and SE LA Grant Parkway.
Typical Cross Section
Page 4
Street Design Guide
Page : 7 of 30Waukee Brand Standards and Style GuidePreferred Version:Use this layout when possible.Horizontal Version:This alternative treatment is available when space limitations exist.
Standalone Mark:
The W “ball” can be used alone where
appropriate within the city limits on signage,
banners, monument signs, badges, pins,
promotional items and apparel.
Sans Positioning Statement:
It is acceptable to use the City logo without the
positioning statement when faced with spacing
or size constraints. Contact the Marketing &
Communications Department for preferred and
horizontal logos with no positioning statement.
Page 4
Page 5
Major Collector Streets
Definition
The collector street system provides both land access and traffic circulation within residential
neighborhoods, commercial and industrial areas. Unlike arterial systems, collector streets
penetrate residential neighborhoods, channeling trips to and from the arterial network. A
major collector street connects arterial streets with minor collectors while also collecting
traffic from local streets, residential and commercial areas. Through movement is prioritized
over direct land access on major collectors.
A major collector has control of access to abutting properties with a majority of access at
local street connections.
Speed limits on major collector streets in Waukee range between 25 – 35 MPH. Future
considerations may include standardizing speed limits to be 30 MPH across the community.
Crossing opportunities for pedestrians and bicyclists should be regular, adequately spaced
and designed to allow for safe opportunities for bicycling and pedestrian users, especially
on roads that are currently posted at 25 MPH.
Waukee examples of a major collector include NE Dartmoor Drive and SE Brick Drive.
Typical Cross Section
Page 6
Street Design Guide
Page : 7 of 30Waukee Brand Standards and Style GuidePreferred Version:Use this layout when possible.Horizontal Version:This alternative treatment is available when space limitations exist.
Standalone Mark:
The W “ball” can be used alone where
appropriate within the city limits on signage,
banners, monument signs, badges, pins,
promotional items and apparel.
Sans Positioning Statement:
It is acceptable to use the City logo without the
positioning statement when faced with spacing
or size constraints. Contact the Marketing &
Communications Department for preferred and
horizontal logos with no positioning statement.
Page 6
Page 7
Traffic Calming Designs
Traffic calming devices are used to encourage motorists to adhere to posted speed limits
and create a safer roadway environment for all users, motorists, cyclists and pedestrians.
A number of traffic calming measures are available to collector streets given lower travel
speeds of motorists and the emphasis placed on neighborhood penetration. Additional
information on each of the following traffic calming measures may be found in the “Traffic
Calming” section of this report, but listed below are measures appropriate for Major
Collector streets include:
Choker
Corner Extension
Median Islands
Mini Roundabouts
Roundabouts
Speed Table / Raised
Crosswalk
Page 8
Street Design Guide
Minor Collector Streets
Definition
A minor collector provides movement between major collectors, residential, commercial
and local streets while providing access to abutting properties. Through movement of traffic
and direct land access are weighed evenly when considering allowing access points to
minor collector streets. Signalized access should be spaced at least every ¼ mile.
Speed limits on minor collector in Waukee are 25 MPH and should provide regular opportunities
for pedestrian and bicycle crossings. Crossing opportunities should be adequately spaced
and designed to allow for safe opportunities for bicycling and pedestrian users.
Waukee examples of Minor Collector streets include SE Florence Drive, SE Pleasant View
Drive and NE Boston Parkway.v
Typical Cross Section
Traffic Calming Designs
Traffic calming devices are used to encourage motorists to adhere to posted speed limits
and create a safer roadway environment for all users, motorists, cyclists and pedestrians.
A number of traffic calming measures are available to collector streets given lower travel
speeds of motorists and the emphasis placed on neighborhood penetration. Additional
information on each of the following traffic calming measures may be found in the “Traffic
Calming” section of this report, but listed below are measures appropriate for Minor
Collector streets include:
Choker
Corner Extension
Mini Roundabouts
Median Islands
On-Street Parking
Roundabouts
Speed Tables / Raised
Crosswalks
Page : 7 of 30Waukee Brand Standards and Style GuidePreferred Version:Use this layout when possible.Horizontal Version:This alternative treatment is available when space limitations exist.
Standalone Mark:
The W “ball” can be used alone where
appropriate within the city limits on signage,
banners, monument signs, badges, pins,
promotional items and apparel.
Sans Positioning Statement:
It is acceptable to use the City logo without the
positioning statement when faced with spacing
or size constraints. Contact the Marketing &
Communications Department for preferred and
horizontal logos with no positioning statement.
Page 8
Page 9
Local Streets
Definition
Local streets allow direct access to abutting land and provide connections to higher order
street systems. They provide the lowest level of mobility and should deliberately discourage
major through traffic movements. Examples of local streets in Waukee include the majority
of residential streets throughout the community.
Local streets in Waukee have a maximum speed limit of 25 MPH and allow for pedestrian
and bicycle accommodations on, along, or crossing local roads at any needed location.
Typical Cross Section
Traffic Calming Designs
Traffic calming devices are used to encourage motorists to adhere to posted speed limits
and create a safer roadway environment for all users, motorists, cyclists and pedestrians.
Traffic calming devices on local streets may also discourage “cut-through” traffic that is
more appropriate for collector streets.
A number of traffic calming measures are available to local streets given lower travel speeds
of motorists and the emphasis placed on neighborhood access. Additional information
on each of the following traffic calming measures may be found in the “Traffic Calming”
section of this report, but listed below are measures appropriate for local streets include:
Choker
Corner Extension
Mini Roundabouts
Median Islands
On-Street Parking
Roundabouts
Speed Tables / Raised
Crosswalks
Page 10
Street Design Guide
Traffic Calming Measures
Traffic calming devices are used to encourage motorists to adhere to posted speed limits and
create a safer roadway environment for all users, motorists, cyclists and pedestrians. Traffic
calming measures are a combination of road features and interventions that reduce the
negative effects of motor vehicle use, alter driver behavior and improve conditions for non-
motorized street users. By increasing pedestrian and cyclist safety, traffic calming measures
may even encourage additional pedestrian and bicycling activity on and along roadways.
Traffic calming measures can be retroactively applied to existing streets or may be integrated
into original construction or reconstruction design guidelines and may be implemented at an
intersection, street, neighborhood, or area-wide level.
When applied to Waukee, the following type of traffic calming measures may be considered:
Choker
A Choker is a lateral horizontal extension of the parkway into the street that, through the
narrowing of the roadway, encourages lower motorist speed through the pinch point.
When located mid-block, this feature is known as a “choker,” whereas an intersection
placement renames this feature as a “corner extension.” This feature should be placed
near streetlights, should be at least 20 feet long, can be used on one-way and two-way
streets and can coexist with on-street parking facilities. If used in conjunction with a mid-
block crossing, a choker will reduce crossing distance for pedestrians and cyclists. Typical
costs (2020 dollars) for this feature can be between $12,000 to $15,000 depending on length
and width of barriers.
Emergency response concerns include retaining sufficient street width for ease of use for
emergency vehicles.
Chokers may modify existing streets or be integrated into the design of new or reconstructed
streets and are appropriate for Major Collectors, Minor Collectors and Local streets.
Corner Extension/Bulb-Out
A Corner Extension is a choker placed at an intersection rather than at a mid-block location.
Typical costs (2020 dollars) for this feature can be between $12,000 to $15,000 depending
on length and width of barriers.
Emergency response concerns include retaining sufficient width for ease of emergency
vehicles and that a shortened curb radii may require large turning vehicles to cross
centerlines.
Similar to Chokers, Corner Extensions and Bulb-Outs may modify existing streets or be
integrated into the design of new or reconstructed streets and are appropriate for Major
Collectors, Minor Collectors and Local streets.
Page : 7 of 30Waukee Brand Standards and Style GuidePreferred Version:Use this layout when possible.Horizontal Version:This alternative treatment is available when space limitations exist.
Standalone Mark:
The W “ball” can be used alone where
appropriate within the city limits on signage,
banners, monument signs, badges, pins,
promotional items and apparel.
Sans Positioning Statement:
It is acceptable to use the City logo without the
positioning statement when faced with spacing
or size constraints. Contact the Marketing &
Communications Department for preferred and
horizontal logos with no positioning statement.
Page 10
Page 11
Median Island
A Median Island is a raised island located along the street centerline to narrow travel lanes
mid-block or at intersections. Raised islands may also serve as pedestrian refuge islands at
crossing points for marked crosswalks or shared-use trails. Typical costs (2020 dollars) for this
feature range between $12,000 to $15,000.
Median Islands are appropriate along primary emergency vehicle streets that provide
access to hospitals/emergency medical services as long as sufficient width is retained for
ease of use by emergency vehicles.
Median Islands may modify existing streets or be integrated into the design of new or
reconstructed streets and are appropriate for Major Collectors, Minor Collectors and Local
streets.
Speed Table / Raised Crosswalk
A Speed Table is a long, raised (three to four inches) speed hump with a flat section in the
middle with ramps on the end that may be placed mid-block or at intersection and may
feature crosswalks. Speed Tables work well in conjunction with curb extensions, textured
crosswalks and curb radius reductions. Speed Tables are appropriate for one- or two-way
streets, are best placed on roads with posted limits of 35 MPH or less and are not appropriate
for roads with 85th percentile speeds of 45 MPH or more. Typical costs (2020 dollars) for this
feature range between $20,000 to $25,000 for concrete tables.
Speed Tables are typically preferred by fire departments over Speed Humps, but may not
be appropriate for placement on primary emergency vehicle routes. The typical delay
experienced by fire trucks is three seconds per Speed Table.
Speed Tables may modify existing streets or be integrated into the design of new or
reconstructed streets and are appropriate for Major Collectors, Minor Collectors and Local
streets.
On-Street Parking
On-Street Parking requires the allocation of paved space to parking spaces, reducing the
amount of available travel lanes and introducing side friction to traffic flow. The parking
spaces can be oriented parallel or angled to the curb-line, but parallel is preferred for
maximum speed reductions. On-Street Parking may be combined with other traffic calming
measures like chicanes and chokers, but should be avoided near roundabouts and should
not be placed adjacent to median islands. In addition to the costs for associated traffic
calming elements installed with on-street parking, there are typically no additional costs
above the addition of appropriate signage.
There are no emergency response concerns for the installment of On-Street Parking, but care
should be exercised when placing On-Street parking near hydrants or other emergency
features.
Page 12
Street Design Guide
On-Street Parking may modify existing streets or be integrated into the design of new or
reconstructed streets and are appropriate for Minor Collectors and Local streets.
Roundabout
A Roundabout is a raised island placed in an unsignalized intersection forcing traffic to
circulate to continue through the intersection or access the intersecting road. Motorists
are required to yield to vehicles already within the Roundabout. The Roundabout will force
drivers to reduce their speeds to comfortably maneuver, but will also require additional
physical separation measures for pedestrian and bicycle facilities for safe access and
street crossings.vi Construction costs for roundabouts vary due to intersection context, but
are typically in excess of $250,000.
Emergency response vehicles may traverse the Roundabout Apron when navigating the
Roundabout intersection.
Roundabouts are only appropriate for new or reconstructed intersections and are
appropriate for Minor Arterials, Major Collectors, Minor Collectors and Local streets.
Mini Roundabout
A Mini Roundabout is a raised island placed in an unsignalized intersections of local and/
or collector streets. A Mini Roundabout should only have one lane of each intersection
entering the roundabout and should not be used on intersections with a high volume
of trucks or buses turning left. Typical costs (2020 dollars) for this feature range between
$50,000 and $300,000 depending on the size, treatment of splitter islands, and amount of
intersection reconstruction required.
Emergency response vehicles can maneuver the Mini Roundabout in the same manner as
a personal automobile or by driving over the center island at slow speeds.
Mini Roundabouts may modify existing intersections or be integrated into the design of new
or reconstructed intersections and are appropriate for Major Collectors, Minor Collectors
and Local streets.
For additional information on the design and function of roundabouts and mini roundabouts,
refer to the FHWA roundabouts website at https://safety.fhwa.dot.gov/intersection/
innovative/roundabouts/.
Page : 7 of 30Waukee Brand Standards and Style GuidePreferred Version:Use this layout when possible.Horizontal Version:This alternative treatment is available when space limitations exist.
Standalone Mark:
The W “ball” can be used alone where
appropriate within the city limits on signage,
banners, monument signs, badges, pins,
promotional items and apparel.
Sans Positioning Statement:
It is acceptable to use the City logo without the
positioning statement when faced with spacing
or size constraints. Contact the Marketing &
Communications Department for preferred and
horizontal logos with no positioning statement.
Page 12
Page 13
Choker
Reduces Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Corner Extension /
Bulb – Out
Reduces Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Lateral Shift
Lane Shift
Retrofit / New
Minor Collectors, Local
Median Island
Lane Shift / Reduces
Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Mini Roundabout
Speed Reduction /
Traffic Control
New
Major Collectors,
Minor Collectors, Local
Roundabout
Speed Reduction /
Traffic Control
New
Major Collectors,
Minor Collectors, Local
Choker
• Reduces Lane Width
• Retrofit / New
• Major Collectors, Minor
Collectors, Local
• $12,000 to $15,000
Choker
Reduces Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Corner Extension /
Bulb – Out
Reduces Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Lateral Shift
Lane Shift
Retrofit / New
Minor Collectors, Local
Median Island
Lane Shift / Reduces
Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Mini Roundabout
Speed Reduction /
Traffic Control
New
Major Collectors,
Minor Collectors, Local
Roundabout
Speed Reduction /
Traffic Control
New
Major Collectors,
Minor Collectors, Local
Corner Extension/Bulb–
Out
• Reduces Lane Width
• Retrofit / New
• Major Collectors, Minor
Collectors, Local
• $12,000 to $15,000
Choker
Reduces Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Corner Extension /
Bulb – Out
Reduces Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Lateral Shift
Lane Shift
Retrofit / New
Minor Collectors, Local
Median Island
Lane Shift / Reduces
Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Mini Roundabout
Speed Reduction /
Traffic Control
New
Major Collectors,
Minor Collectors, Local
Roundabout
Speed Reduction /
Traffic Control
New
Major Collectors,
Minor Collectors, Local
Median Island
• Lane Shift / Reduces
Lane Width
• Retrofit / New
• Major Collectors, Minor
Collectors, Local
• $12,000 to $15,000
On-Street Parking
Reduces Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Speed Cushion
Vertical Deflection
Retrofit
Local
Speed Hump
Vertical Deflection
Retrofit
Local
Speed Table /
Raised Crosswalk
Vertical Deflection
Retrofit / New
Minor Collectors, Local
Speed Table/Raised
Crosswalk
• Vertical Deflection
• Retrofit / New
• Major Collectors, Minor
Collectors, Local
• $20,000 to $25,000
Page 14
Street Design Guide
On-Street Parking
• Reduces Lane Width
• Retrofit / New
• Minor Collectors, Local
On-Street Parking
Reduces Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Speed Cushion
Vertical Deflection
Retrofit
Local
Speed Hump
Vertical Deflection
Retrofit
Local
Speed Table /
Raised Crosswalk
Vertical Deflection
Retrofit / New
Minor Collectors, Local
Choker Reduces Lane Width Retrofit / New Major Collectors, Minor Collectors, Local Corner Extension / Bulb – Out Reduces Lane Width Retrofit / New Major Collectors, Minor Collectors, Local Lateral Shift Lane Shift Retrofit / New Minor Collectors, Local Median Island Lane Shift / Reduces Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Mini Roundabout
Speed Reduction /
Traffic Control
New
Major Collectors,
Minor Collectors, Local
Roundabout
Speed Reduction /
Traffic Control
New
Major Collectors,
Minor Collectors, Local
Roundabout
• Speed Reduction /
Traffic Control
• New
• Minor Arterials, Major
Collectors, Minor
Collectors, Local
• $250,000+
Choker Reduces Lane Width Retrofit / New Major Collectors, Minor Collectors, Local Corner Extension / Bulb – Out
Reduces Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Lateral Shift
Lane Shift
Retrofit / New
Minor Collectors, Local
Median Island
Lane Shift / Reduces
Lane Width
Retrofit / New
Major Collectors,
Minor Collectors, Local
Mini Roundabout
Speed Reduction /
Traffic Control
New
Major Collectors,
Minor Collectors, Local
Roundabout
Speed Reduction /
Traffic Control
New
Major Collectors,
Minor Collectors, Local
Mini Roundabout
• Speed Reduction / Traffic
Control
• Retrofit / New
• Major Collectors, Minor
Collectors, Local
• $50,000 to $300,000
Page : 7 of 30Waukee Brand Standards and Style GuidePreferred Version:Use this layout when possible.Horizontal Version:This alternative treatment is available when space limitations exist.
Standalone Mark:
The W “ball” can be used alone where
appropriate within the city limits on signage,
banners, monument signs, badges, pins,
promotional items and apparel.
Sans Positioning Statement:
It is acceptable to use the City logo without the
positioning statement when faced with spacing
or size constraints. Contact the Marketing &
Communications Department for preferred and
horizontal logos with no positioning statement.
Page 14
Page 15
Access Spacing Criteria
The efficiency and safety of a street or highway depends largely upon the amount and
character of interruptions to the movement of traffic. Access priority should be ranked to
preserve the core functionality of the system; to provide for a supporting street and circulation
system; to preserve the functional areas of planned intersections and interchanges; and to
limit the number of conflict points along the corridor. If found to be in conflict, a lower ranked
consideration should not be allowed to infringe upon that of a more highly ranked community
priority.
The following general priorities should guide access requests to preserve the safety and
efficiency of the subject roadway:
• Safety to the traveling public including considerations of vehicle safe stopping distance
and the reduction of conflict areas;
• Preservation of the traffic-carrying capacity of the roadway and intersection functional
areas;
• The impact upon the economy of the area; and,
• Balance the safety of the public with public road access by property owners
The number of access points per mile has a direct relation to the number of expected crashes
and should be controlled in the interest of public safety and roadway efficiency. Refer to the
current SUDAS guidance for more details on access management.
Beyond limiting the number of access points and interaction opportunities, the placement of
access points are important considerations. The following spacing table provides guidance
on access placement that minimizes conflict frequency and considers necessary stopping
distance for a number of roadway categories:
Street (Posted Speed)Centerline to Centerline Full Access Spacing (Feet)
Centerline to ROW Line of Street Corner Clearance Spacing (Feet)
Local (25 MPH)
Residential 50 75
Commercial 75 100
Minor Collector (25 MPH)
Residential 50 75
Commercial 100 150
Major Collector (30 MPH)300 (1501)300 (2501)
Minor Arterial (35 MPH)600 (3001)600 (4252, 3003)
Major Arterial (45 MPH)1,320 (6001)1,320 (6002,3)
1 Right-In-Right-Out allowed at this spacing
2 For Right-In-Right-Out located upstream of intersection
3 For Right-In-Right-Out located downstream of intersection
Page 16
Street Design Guide
Intersection Selection Guidance
When two or more roads intersect, there is potential for conflict between vehicles and
between various modes of travel. A priority in the design of at-grade intersections is to reduce
the potential severity of conflicts and at the same time, assure the convenience and ease of
all users in making the necessary maneuvers.
Intersection Type Recommendation Table
The following table is meant only as a general guide for potential intersection treatments.
The appropriate intersection type for each location should be influenced by:
• Functional class of intersecting
streets
• Traffic volumes, patterns and speeds
• Design level of traffic
• All modes to be accommodated
• Number of intersecting legs
• Availability of right of way
• Topography
• Desired type of operation
• Access requirements
Type of
Intersecting Street Local Minor
Collector
Major
Collector
Minor
Arterial
Major
Arterial
Local Uncontrolled
Stop Control
Mini- roundabout
Stop Control
Additional Turn Lanes
Roundabout
Right-in-Right-Out Right-in-Right-Out
Minor Collector
Stop Control
Mini-
roundabout
Stop Control
Mini-
roundabout
Stop Control
Additional Turn Lanes
Roundabout
Additional
Turn Lanes
Roundabout
Signalized
Right-in-Right-Out
Major Collector
Stop Control
Additional
Turn Lanes
Roundabout
Stop Control
Additional
Turn Lanes
Roundabout
Additional Turn Lanes
Roundabout
Signalized
Additional Turn Lanes
Roundabout
Signalized
Additional Turn Lanes
Signalized
Minor Arterial Right-in-
Right-Out
Additional Turn Lanes
Roundabout
Signalized
Additional Turn Lanes
Roundabout
Signalized
Additional Turn Lanes
Roundabout
Signalized
Additional
Turn Lanes
Signalized
Major Arterial Right-in-
Right-Out
Right-in-
Right-Out
Additional
Turn Lanes
Signalized
Additional
Turn Lanes
Signalized
Additional
Turn Lanes
Signalized
Page : 7 of 30Waukee Brand Standards and Style GuidePreferred Version:Use this layout when possible.Horizontal Version:This alternative treatment is available when space limitations exist.
Standalone Mark:
The W “ball” can be used alone where
appropriate within the city limits on signage,
banners, monument signs, badges, pins,
promotional items and apparel.
Sans Positioning Statement:
It is acceptable to use the City logo without the
positioning statement when faced with spacing
or size constraints. Contact the Marketing &
Communications Department for preferred and
horizontal logos with no positioning statement.
Page 16
Page 17
Right Turn Lane Guidance
Dedicated right turn lanes can provide increased efficiency and safety at major driveways
located on the arterial and major collector roadway networks by separating vehicles that
are slowing to complete a right turn from the vehicles travelling through the intersection.
Drawbacks to the addition of right turn lanes include additional crosswalk length across the
arterial street (if a crosswalk is provided) and potential sight distance concerns for motorists
exiting a side street or driveway when a significant volume of right turning vehicles are present.
Dedicated right turn lanes should be considered on arterial and major collector streets when
significant traffic generators have direct access to the arterial roadway network. NCHRP
Report 457 provides widely accepted guidance to determine when a dedicated right turn
lane should be considered. The variables to consider include the volume of right turning traffic
as well as the total volume of traffic in the direction of the right turning vehicles.
Offset right turn lanes (providing a buffer space between the turn lane and the adjacent
through lane) should be considered for side-street stop controlled intersections where there
are significant volumes of both entering and exiting traffic occurring at the same time.
Traffic Impact Studies
City staff will determine if a traffic impact study should be completed on a case by case
basis and will work with the site developer on the specific scope of work to be included in the
study. If a traffic impact study is required by the Iowa DOT due to proposed access changes
on Hickman Road (US 6), the Iowa DOT Guidelines for Traffic Impact Analysis will need to be
followed.
Page 18
Street Design Guide
Sources
i. https://intrans.iastate.edu/app/uploads/sites/15/2018/09/5B-1.pdf
ii. Waukee Comprehensive Plan 7-80.
iii. https://intrans.iastate.edu/app/uploads/sites/15/2018/09/5B-1.pdf
iv. Waukee Comprehensive Plan 7-80.
v. https://intrans.iastate.edu/app/uploads/sites/15/2018/09/5B-1.pdf
vi. http://library.ite.org/pub/2c675061-fb27-c4e8-0d89-e5cc99a3ca7b
I 80R-22Highway 6
6th St300th St
A s h w o r t h R dT AveUte AveNW 10th St340th TrS AveU PlE Hickman Rd
Meredith Dr
310th St
U LnSE University AveV AveSE Olson DrNE Alice's Rd4th StAshworth Dr
Wendover RdGrand Prairie Pkwy280th St
U AveV CtN Warrior Ln270th St
92nd St156th St142nd St184th St88th StW Hickman Rd
Berks
hire
PkwyS Warrior Ln3 3 5 t h S t
C h a l k S tSE Brick DrRichland PlSE La Grant PkwySEW
a
c
o
PlBishop Dr3rd St90thStSE Alice's Rd8th StH a wthorn Dr
10th StNE Venture Dr
Northview Dr
Ch R 16/ R AveSpruce St
S E W e s t o w n P k w y7th StBostonP kw y
NEWestgateDr2nd St260th St
Laurel St NEDart
mo
o
r
Dr160th StI ndian R i d g e D r3 1 2 t h P l SE Waddell Way328th Pl
Daybreak Dr
W i ld wood D r
Wendover Ln1st St322nd Rd
S E T a l l g r a s s L n
S h e r i d a n A v e
93rd StCedar St
SE L au r el S t
SE Westgate Dr9th StSE Waco Pl/ 98th StSE Pleasant View Dr
N E Bowman Dr
Bel Aire Dr
N E Dougla s P kwy
161stStK in g man Dr
L a k e v iewD rPark Rd Collins DrNW 164th St338th Ct SE Willowbrook DrTe
rraceDr
G r a y A v e11th StI n te rs tate Pkwy
C o t t o n w o o d D r 91st St89th StCh F64 322nd Rd
N apaV alley D rSE Crabapple DrC o d y D rNW152ndStWildenDrBrodieStSE Oxford DrNWSun r i s e D rO xfordDrCh R30 170th StRose w oodD rNE Fox Run Trl
N E B o b c a t D r
Wilson St
Westow n PkwySE Florence DrAidan St
284th Ln
330th WayA bigail
L
nSE Brentwood DrS E EskerRidgeDr
University Ave
Maple St
Corene Ave
X AveHannahLnHunter Hollow Rd162nd StNW 159th StWaukee Ave Melro
seDr NEBadgerLnNE Horizon Dr
Jordan Creek PkwyS E Bell D r NW 158th StR o m a n R d
NE Dellwood Dr
Summit DrTanglewoodDr
NWStr atfordD r
SE Boone DrNW 157th StNE Boston Pkwy
G r e e n s p i r e D r
NineIron
DrWo o d c res t D r
SE Carefree LnN E Su nriseDr
Serenity DrS EW es t b ranchDr5th StS E P r a i r i e P a r k L nSE Whitetail LnChat
eau TrNW 6th StSugar St
S i l v e r l e a f L n
C a n y o n S t
Broderick Dr
K im b a llLnKaylin DrP r a ir ie D r
SE BishopDr NW 144th StSE Booth Ave NW 167th StNWLittleWal nut Creek Dr
D a k o t a D r
SEHawthorne RidgeDr
E P T r u e P k w ySugar Creek DrLinden Dr
S E Walnu tR id ge
DrSEIndigoLnSE B e l fry Dr
SE Harper DrSugarCreekLn163rd St84t
hStLake Dr
C e d a rw o o d D rP a r k v i e w D r
Elm St
PaintedWoodsDr Celtic DrR e d S u n s e t Dr
Christie LnBel
montBlvd
SE Bristol Dr
O akbrook
DrSEWoodcrestDrBaxter DrSouthview Dr S E S o u th b r a n c h D r
BaileyCir SESagewoodCirIltis Ct
N E W o lfp a c k D r
Westwind CtS E M a d r o n e L n
Woodcreek Ln
Wi
l
dwood CtAlpine CtHickory Hollow LnForest Ct
W i n s t o n C t
NW Jamestown LnSE Trillium Dr Airline Dr159t
h St
Vintage Pt Phoenix DrS c a r l e t D rNW 166th CtElmcrest CtSE Deerfield LnS E B l a c k t h o r n D r
Dellwood Dr
SE Dogwood LnSE Finch Cir160th CirS E L a u r e l S t
3rd StMaple St
Bel Aire DrS AveT AveS Warrior LnNorthview DrR-22N Warrior LnLaurel St
NE Douglas Pkwy
Ute AveMaple St
SWarriorLnSE Esker Ridge Dr
University Ave
0 1,700850
Feet
FILE PATH: V:\Projects\2019\119.1192.01\GIS\JBW_Waukee_2020-02-28.mxd
SOURCES: Source: Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community
Major Streets PlanWaukee, Iowa
6/4/2020
2040 Future Land Use& Road C lassifications
Future Major Collector Streets
Future Minor Collector Streets
Future Minor Arterial Streets
Major Collector Streets
Minor Collector Streets
Minor Arterial Streets
Major Arterials
Interstate
Racoon River Trail
Railroad_Tracks
Waukee City Limits
Local
Urban Reserve
Rural Residential
Single Family Residential
Medium Density Residential
High Density Residential
Neighborhood Commercial
Community Commercial
Regional Commercial
Mixed Use
Business Park
Light Industrial Office
Technology Center
Institutional
Park
Open Space
Wetland
ROW