Pavement Management Program
As part of the Contra Costa County Public Works Department’s Pavement Management Program, each year selected roads throughout unincorporated Contra Costa County receive a surface treatment between June and October. The County Public Works Department has found that a program of preventive maintenance using surface treatments is the most cost effective way to extend the useful life of the County’s road network.
Surface treatments protect pavements from the damaging effects of water and air infiltration and sunlight exposure that can rapidly deteriorate a road. In many cases the use of a surface treatment will eliminate the need to do expensive pavement patching and will add years to the life of the existing pavement. Surface treatments typically used by the County Public Works Department are single chip seal, double chip seal, slurry seal, cape seal, and microsurface seal.
Chip Seal Information and Schedule
Slurry Seal Information and Schedule
Cape Seal Information and Schedule
Chip seal schedule information can be viewed by clicking the link above, or by phoning (925) 313-7000. Scheduling information regarding the contracted slurry seal, cape seal, and microsurface seal application can be obtained by contacting the Public Works Department's Construction Division at (925) 313-2320 or clicking the Construction Division link above.
Prior to the surface treatment application County Public Works Department maintenance crews will prepare the streets for the surface treatment. The preparation work can include crack sealing, the application of pavement reinforcing fabric and the removal/replacement of broken pavement. Preparation work is typically performed in the fall and in the spring after the winter weather.
Several months before the surface treatment application is applied the Public Works Department Maintenance Division mails notification letters to residents whose roads are scheduled to be surface treated. Residents are also notified the day prior to the surface treatment and the day prior to sweeping, requesting that vehicles be parked off the road to avoid oil spray and allow the workers to treat and clean the entire pavement surface.
Click here to see a copy of the notice sent to residents informing them of upcoming road work.
- Trim your trees so branches don't hang lower than 14 feet, 6 inches above the roadway to prevent damage to the trees and our equipment.
- To see a detailed sheet of our trimming specifications, please click here.
- Keep your children and pets away from the streets while we are performing these treatments. Several large pieces of equipment are involved.
- Drive slowly; the pavement can be slippery because of the loose rock. Do not drive on the treatments until the lanes have been reopened to traffic.
- Warn your children to be careful while riding their bicycles. It would be preferable if they refrained altogether until the loose rock is swept up.
- Continue to park your car off the road or cover it until the initial sweeping is completed. Loose rock thrown up by speeding vehicles could damage your car's paint.
- Check your shoes before walking into your house. The loose rocks can be picked up and tracked onto the carpets or scratch wood floors.