Cold Planing & Micro Milling

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Cost Benefits

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  • Allows surface removal vs. full reconstruction
  • Eliminates adjustments to utility structures, guardrail, driveways and intersecting roadways
  • Milled RAP has greater value than excavated RAP since it is already partially processed
  • Removing asphalt with CP is quicker than conventional methods saving time, traffic control costs and disruption to the traveling public

Factors that may Impact Cost

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Choppy projects with complicated traffic patterns are less efficient than continuous projects
  • Size of project
  • Project Phasing: Multiple location projects vs. single location projects (5-mile job on 1 road vs. 1-mile job in 5 different places)
  • Traffic maintenance (closed local traffic only vs. alternate traffic patterns through the project)
  • Urban work (manholes / catch basins, intersection control add to cost) vs. rural work
  • Night work (costs more for labor but less traffic disruptions)
  • Bidding/Tender date vs. completion date, number of working days

 


Decrease Cost Without Affecting Quality

  • Perform preconstruction testing and evaluation (drainage, subgrade, structure, paving fabric, etc.)
  • Early bidding/tender closing (ideally Oct-Dec for the next year’s work)
  • Clear, constructible specifications
  • Fair assignment of risk