• Chip Seal 1

2017-2018 Pavement Preservation
Chip Seals & Overlays

Project Description

The work to be done consists, in general of placement of an asphalt concrete overlay and chip seals 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.

View/Download Bid Tabulation

Project Locations

Chip Seals

  • FERGUSON RD, from Bodega Hwy to Mill Station Road (Road ID 69049, from postmile 10.00 to 11.31)
  • FURLONG RD, from Bodega Hwy to Occidental Road (69052, from postmile 10.00 to 11.73)
  • POPLAR AVE, from Railroad Ave to Cypress Avenue (58041, from postmile 10.00 to 11.00)


  • BOHEMIAN HIGHWAY, from Graton Road to Main Street, (Road ID 6002D, from postmile 13.92 to 18.78)
  • GROVE STREET, from White Alder to Arnold Drive (Road ID 56023, from postmile 11.79 to 13.87)
  • RIVER RD, from Crocker to Washington School Road (Road ID 1001B, from postmile 30.00 to 34.21)

About the Treatment Types

Chip Seals

A Chip Seal is liquid asphalt is sprayed onto the pavement followed immediately by spreading on a thin layer of uniformly sized aggregate chips. The new surface is then rolled to embed the chips in the asphalt. Once the asphalt has cured (usually taking about 24 hours or less) any loose chips are swept up.

Chip seals are relatively inexpensive, as compared to conventional hot mix asphalt overlays, and are fast and easy process (usually completed in 24 hours or less). A chip seal can extend pavement life by 5 to 7 years.

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.