• AC Overlay 1

2018 Storm Damage - Full Depth Reclamation and Overlays

Project # M18059

Status: Complete

Project Description

The work to be done consists, in general, of placement of full depth reclamation and/or an asphalt concrete overlay on various County Roads, together with associated flagging, metal beam guard rail, traffic control and preparation required to construct the work, along with delineation of the new pavement surface, and such other items or details, not mentioned above, that are required by the Standard Specifications, or these Special Provisions shall be performed, placed, constructed or installed.

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Project Locations

Full-Depth Reclamation

  • Canfield Road, from Blank Road to Bloomfield Road
  • Green Valley Road, from Highway 116, south to Postmile 11.05
  • Millbrae Avenue, from Stony Point Road to Rohnert Park City Limit
  • Trenton Road, from River Road to Trenton-Healdsburg Road
  • Willowside Road, from Hall Road to Guerneville Road

Asphalt Concrete Overlay

  • Austin Creek Road, from Highway 116 to Postmile 11.66
  • Fort Ross Road, from Meyers Grade Road to Niestrath Road
  • Franz Valley School Road, from Franz Valley Road to County Line
  • Gehricke Road, from Brazil Street, North to End
  • Harrison Grade Road, from Graton Road to Green Valley Road
  • Millbrae Avenue, from Taylor Avenue to Stony Point Road
  • West Dry Creek Road, from Yoakim Bridge Road, North to End
  • West Soda Rock Lane, from Alexander Valley Road to Postmile 10.77 

About the Treatment Types

Full-Depth Reclamation

Full-Depth Reclamation is a type of complete road reconstruction where the old pavement and base materials are not removed. Instead, they are processed on-site. During this process, the old materials are pulverized, mixed, and treated with a stabilizing agent (such as cement or asphalt emulsion) to produce a like-new road base. Typically, the roadway is then re-surfaced with an overlay of new asphalt. There’s no need to haul in aggregate or haul out old material for disposal. Truck traffic is reduced, and there is little or no waste. Due to reduced transportation, costs far less than the conventional approach to reconstruction. Can provide up to 30 years of additional life.

Asphalt Concrete Overlay

Asphalt Concrete (AC) consists of mineral aggregate bound together with asphalt, laid in layers, and compacted. The most common type used on streets and highways is Hot Mix Asphalt (commonly abbreviated as HMA). Hot Mix Asphalt Overlay is regarded by most road departments as a standard for road maintenance and restoration, and has been for several decades. It produces durable, long-lasting results, and can increase pavement life by 15 years or more. Combined with other processes, such as milling or grinding of old pavement, an AC overlay can transform a tattered road surface into a like-new condition.

See more information about pavement treatments

Contact Information

Business Hours
Monday – Friday
8:00 AM – 5:00 PM
Contact us by Phone
Office Location
La Plaza B
2300 County Center Drive
Suite B 100
Santa Rosa, CA 95403
38.462023, -122.725381

Standard Plans

Construction Standards for County Roads


Standard plans for construction of roads and related structures.