Warrenville Road Reconstruction Project

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Warrenville RoadReconstruction Project

• Permeable Concrete Brick Pavers

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Phase I Completed
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Scope of Project

• Approximately 1-mile stretch of residential
  roadway reconstructed from a rural cross section
  to an urban cross section
• Project construction in three phases over a
  3-year period
• Phase I constructed in 2007 - 1600 linear feet
• Phase II construction in 2008 - 1300 linear feet
• Phase III construction in 2009 - 2000 linear feet
• Estimated total project cost - 4,700,000.00
• Warrenville Road is considered a community
  collector street

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Cross Section Permeable Surface
3/8 JOINTS
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3/8 Gaps Between Bricks
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Brick Laying Machine
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Storm Sewer Installation
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Excavation and Stone Base
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Benefits of Permeable Brick System

• Reduced or eliminated storm water runoff from
  pavement surface
• Filtration of rain water prior to entering
  sub-drain storm sewer
• Storm water detention
• Road surface not susceptible to the freeze/thaw
  cycle
• No ponding of water on the surface
• Traffic calming
• Charm and character
• Acceptance by long-time residents

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Cost ComparisonAsphalt versus Permeable Bricks

• Costs can vary significantly from project to
  project.
• Warrenville Road retrofit (rural to urban) was
  designed with a storm sewer sized to accommodate
  a 10-year average rainfall event.
• Warrenville Road was constructed with a
  structural number of 3.7
• 15 increase of a project comparison
• 60 increase on a surface to surface comparison

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Lessons Learned - Benefits

• Traffic calming effect much more significant than
  anticipated
• Long-time residents accepting of such a drastic
  change
• Permeability benefits much greater than
  anticipated low areas do not collect water
• No freeze/thaw cycle adds to the long-term
  structure of the roadway
• Aesthetic value high
• Leadership of community recognized

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Lessons Learned - Challenges

• Not easy for snow and ice to melt because salt
  brine drains into cracks
• Heat from ground (as predicted) does not keep
  road clear of ice
• Steel plow must be used
• Some grass growing between cracks
• Sweeper must be a vacuum technology, not just a
  brush

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Advice

• This is a significantly different type of roadway
  in terms of cost, aesthetics, function and
  project length
• Take the time to work with the residents
• Share information
• Have public meetings
• Answer questions
• Walk the road

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Phase II Completed
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Ripple Effect

• Sequestria Subdivision 11 homes, 2000
  cul-de-sac
• School District new middle school parking lot
  100 spaces

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