Asphalt Overlay

A common pavement maintenance practice that extends pavement life and provides a good driving surface. The City of Oak Harbor is responsible for the maintenance of 71 centerline miles of roadway. Asphalt surfaces should last between 15 to 20 years (varies depending on traffic). Roads are reviewed annually to determine if pavement preservation is required. Contractors are hired through a bidding process to perform the work. 

Difference Between Asphalt & Chip Seals

The construction method. Asphalt overlays are created by heating liquid asphalt and mixing it with aggregate to form a road

  • Chip sealing ingredients are similar but construction is different
  • Overlays cost more but last longer than chip seals

Asphalt Overlays Provide

  • Additional structure and service life of the road
  • Smoother surface compared to chip seals

Process for Installation

Detailed information is available on the Island County Asphalt Overlays Fact Sheet.