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Summer Roadwork

  • Transportation’s Pavement Maintenance Program treats select streets during the summer using different types of road repair, depending on the condition of the surface. 

  • Road repair methods

  • Chip seal

    Hot tar is poured into or above a crack in the pavement to prevent water from entering the base layer. 

    Newly applied chip seal will shed rock for several weeks; this is normal and street sweeping will remove the excess gravel.

     At first, chip seal has a rougher surface than asphalt, but it will get smoother over time as vehicles drive on it and will look and feel like asphalt.


    • Extends the life of the road
    • Improves traction
    • Helps reduce water damage
    • Adds durability to the surface
    • Cost effective


    Notification and street closures 

    • Residents living on streets scheduled for chip seal will receive information and instructions in the mail.
    • Signs are placed 24 hours in advance of chip seal work.
    • On-street parking is not allowed the day a street is scheduled for chip seal.
    • Street-parked vehicles will be towed at the owner’s expense on construction days. 
    • Towed vehicle information is handled through the Gresham Police Department: 503-618-2318.

    Inlay is used when the road has a solid foundation, but needs new layers of asphalt.   Inlay replaces failed streets by grinding down the top asphalt layers using a milling machine.  The ground asphalt is removed using dump trucks and hauled to recycling or other disposal sites.  New asphalt is then laid by paving machines and rolled into place. Once complete, the road surface provides many years of serviceability.

      • Removes any cracks, ruts and imperfections
      • Restores and extends the life of the road
      • Helps the road last longer by preventing damage to the road base
      • Smooth road surface 
      Slurry seal

      A slurry seal protects, preserves and extends pavement life.

      • A slurry seal is a liquid mixture of asphalt and aggregate spread over the surface of the street.
      • Slurry seal is weather-dependent and may be rescheduled if conditions are not dry.


      • Extends the life of the road
      • Corrects loss of asphalt surface
      • Fills minor voids and depressions

      Construction details 

      Advance notice of slurry work in the neighborhood is mailed to residents and businesses.

      • Slurry seal is applied during the day, Monday through Friday.
      • The City hires independent contractors to do the work.
      • Streets will be closed to all traffic until the seal is completely cured. Curing takes two to five hours depending on weather conditions.
      • No Parking barricades will be set up 24-48 hours before slurry seal work. 
      Micro surfacing

      Micro surfacing is a preventative treatment that covers the surface of the road with a thin layer of liquid asphalt mixture.

      • It is a quick drying treatment often used on arterials and high traffic volume roads to keep traffic delays to a minimum.
      • The procedure is weather dependent and is often scheduled during dryer months.


      • Extends life of the road
      • Increases skid resistance
      • Fills ruts and minor imperfections
      • Improves the surface
      • Minimal traffic disruption
      • Cost effective

      Construction details 

      • The City hires an independent contractor to do the work.
      • The contractor will need unrestricted access to the street.
      • Garbage pick-up and mail delivery may be adjusted to allow for unrestricted access to the street.
      • The street will remain closed until the street has cured completely.
      • Street parking will not be allowed during the micro surfacing treatment. No-parking signs will be placed on affected streets 24 hours in advance.  Vehicles will be towed at the owner’s expense.
      • Towed vehicle information is handled through the Gresham Police Department: 503-618-2318.
      Full depth reclamation

      Full depth reclamation is a construction method to rebuild failed streets by recycling the materials of the existing road. 

      Because the materials are used on-site, the cost is 25% to 50% less than the traditional method of removing and replacing building materials.


      • Saves time and money
      • Improves pavement structure and travel quality
      • Conserves resources and is environmentally friendly
      • Reduces traffic impact on the community

      For more information, watch our full depth reclamation video 

    • Life of a road

      Roads have a life span and the life cycle of a road is affected by many factors, including weather, traffic volume and the maintenance efforts that go into preserving the road as long as possible.  When a road reaches the end of its life – when surface damage becomes so severe that the road bed is destroyed – it becomes necessary to replace the road, which costs up to $120 per square yard.