PUBLIC WORKSPavement Preservation Program

231 MILES TOTAL184 MILES SURFACED 47 MILES GRAVEL

Clatsop County Overview

Three Districts: District 1 Astoria 8 Employees District 2 Knappa 4 Employees District 3 Jewell 3 Employees 1,085 Sq. miles

Drainage work Vegetation Work

Road Preparations

Chip Seals On The Oregon Coast

Weather usually unpredictable!

High Temps average in the upper 60s.

Oiling windows can be very short with rain showers, heavy fog, and cold roads till mid day.

Scheduling oil deliveries, and crews difficult.

Know when to hold ‘em

Clatsop County's methods to maintaining the road structure.

¼ 10 chip seal ,and fog seal.

6 year cycle time of road resurfacing.

Looking at fog sealing to extend cycle times.

No major base failure

Know when to fold ‘em

Clatsop County secured stable funding in 1989 with road district 1 tax.A lot of roads were built with minimal to no base rock.Heavy traffic, Resource roads, roads not built to handle current traffic loads.Are we applying chip seals to roads with base, or drainage failures, beyond repair.

Road Reclaiming

• Pulverization uses 100 % of existing materials.

• Allows us to correct problems, and increases the load-bearing strength of the base.

• ATB or CTB the existing base.

• Allows for reshaping of the road surface.

Fog Seal

CSS-1H Dilute mixed at a 60-40 ratio, giving us a little faster cure time than a 50/50 mix. Timing this process with warm temperatures and direct sun light is key to fast dry times. Times vary from 15 to 30 minutes on a hot day to 45 to 90 minutes on cooler shady areas.

Key Factors To Success

Consistent high quality oil products.

A good quality rock source, and getting the rock in the vicinities of the work areas.

The right equipment for the job.

Team work, and quality control, from road preparations to the finished product.