HomeMy WebLinkAboutWork Session Roadway Design Parameterswar®�x
CITY OF IOWA CITY
Roadway Design Parameters
City Council Work Session
April 2, 2018
Roadway Design Parameters
• General Project Considerations
• American Legion Road
• Foster Road
• McCollister Boulevard
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CITY OF IOWA CITY
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General Project Considerations CITY IOWA CITY
• Utility improvements included with projects
• Complete Streets Policy
— "...all current and projected users of the public right-of-way are
intended to conveniently reach their destinations via public
rights-of-way, regardless of their chosen mode of
transportation...
— ... provide for the needs of all users and abilities in all planning,
design, construction, reconstruction, retrofit, operations, and
maintenance activities and products within the public right-of-
way..."
— Provide transportation options
General Project Considerations
• Design Considerations
— Arterial Streets
• Intended to handle regional and local traffic
• Includes anticipated heavy vehicles and
transit users
• Anticipated to address traffic concerns for
nearby streets:
— Foster Road — Linder Road, Kimball Road and Brown
Street
— McCollister Boulevard — Langenberg Avenue
— Bicycle Master Plan
— Lane Widths
• NACTO: "For designated truck or transit
routes, one travel lane of 11 feet may be
used in each direction."
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CITY OF IOWA CITY
General Project Considerations
• Design Considerations
• Standard bus vehicle width and
buffer
• Single travel lane in each direction
• Travel lanes only
— 22'-24' recommended
• Half street (single direction)
— 15' minimum
— 17' desired minimum
— 18' proposed (Foster Road)
— 17' proposed (American Legion Road)
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CITY OF IOWA CITY
Images source: nacto.org
General Project Considerations
• Recent City Projects
— Lower Muscatine Road (2014)
• 15' travel lanes (two-lane section)
• 13' travel lanes (three -lane section)
— Sycamore Street (2015)
• 11' travel lanes (two-lane section)
— First Avenue Grade Separation (2017)
• 11.5' to 12' travel lanes
— Washington Street (2017)
• 11.5' travel lanes
— Dubuque Street (anticipated 2018)
0 11' — 12' travel lanes
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CITY OF IOWA CITY
General Project Considerations
Design Considerations
— Design Speed
• 35 mph
— Arterials
— Fringe Areas
— McCollister (Mormon Trek — Old Hwy 218): 45 mph
Current Proposed Designs
— Design Considerations
— Stakeholder Input
— Opportunity for Input
— Upcoming Design Standard Revisions
(SU DAS)
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CITY OF IOWA CITY
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American Legion Road Improvements �:�;:;Mi
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• Complete Reconstruction from Scott Boulevard to Taft Avenue
• Conversion from a rural to an urban cross-section w/sidewalks
• Single lane roundabout at Scott Boulevard and American Legion Road
• Pedestrian underpass (West of Barrington Road near the new Hoover School)
American Legion Road Improvements
West End
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Muscatine Avenue
• 31' Pavement Width
Scott Boulevard
• 31' Pavement Width
American Legion Road Improvements
East End
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CITY OF IOWA CITY
American Legion Road
• 22' Pavement Width
Taft Avenue
• 24' Pavement Width
(North of American
Legion Road)
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American Legion Road Improvements X1""7
Pedestrian Underpass CITY IOWA CITY
Pedestrian Underpass
Supports Safe Routes to School Initiative
Enhances regional trail network
Allows alternate pedestrian crossing of
American Legion Road
Existing topography accommodates
underpass
Bicycle Network
With Proposed Facility Types IV
Legend
On -Street Bicycle Facilities
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American Legion Road Improvements�;►;�
Estimated Project Costs & Schedule CITY, IOWA CITY
Schedule
• Design Development
• ROW Acquisition
• Private Utility Relocations
• Bid Letting
• Construction
Estimated Project Costs
• Construction $61900,000
• ROW & Easements $940,000
• Engineering $580,000
• Observation & Admin. $580,000
April 2018 — Nov. 2018
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April 2020 — Nov. 2020
Total $9,000,000
Foster Road Extension
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CITY OF IOWA CITY
Overall
Extension of Foster Road from east of Dubuque Street to Prairie Du Chien Road
Existing City property/alignment
Foster Road Extension
West End
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Foster Road
• 36' Pavement Width (east of Dubuque Street)
• 31' Pavement Width (west of Dubuque Street)
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CITY OF IOWA CITY
Foster Road Extension
East End
Prairie du Chien Road
• 28' Pavement Width
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CITY OF IOWA CITY
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Prairie du Chien Road
• 28' Pavement Width
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CITY OF IOWA CITY
Bicycle Network
With Proposed Facility Types°
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Foster Road Extension
Estimated Project Costs & Schedule
Schedule*
• Design Development
• Construction
CITY OF IOWA CITY
Estimated Project Costs*
• Construction $2,645,000
• ROW & Easements $5,000
• Engineering $300,000
• Observation & Admin. $250,000
January 2018 —April 2018
2018-2019
Total $3,200,000
*Note: Project completed as part of Forest Hill Estates Subdivision, pending development
agreement
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McCollister Boulevard Extension �;� mph
Overall
• Extension of McCollister Boulevard from east of Covered Wagon Drive to Sycamore Street
0 Tie into existing roundabout on Sycamore Street
Overall
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• Extension of McCollister Boulevard from east of Covered Wagon Drive to Sycamore Street
0 Tie into existing roundabout on Sycamore Street
McCollister Boulevard Extension
West End
McCollister Boulevard
• 34' Pavement Width
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CITY OF IOWA CITY
McCollister Boulevard Extension
East End
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CITY IOWA CITY
Sycamore Street Roundabout
• 34' Pavement Width — 11' Travel Lanes and 5.5' Bike Lanes
McCollister Boulevard Extension
Opticos Report
• Connectivity in the South District Area, at all levels of
travel modes
• Bus service challenges
• Bike infrastructure interconnectivity
• Relief for neighborhood streets currently being used as
arterials
• Improved walkability
McCollister Boulevard Extension
Potential Cross Section
Potential Typical Section
• Urban cross section, including curb and
gutter
• 11' travel lanes
• On -street (protected?) bike lanes
• McCollister corridor to the west
• 8' sidewalk (north side) and 5' sidewalk
(south side)
• 100' proposed right-of-way
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CITY OF IOWA CITY
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CITY OF IOWA CITY
Questions and Discussion