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PUBLIC WORKS

PUBLIC WORKS. Pavement Preservation Program. Clatsop County Overview. 231 MILES TOTAL 184 MILES SURFACED 47 MILES GRAVEL. Three Districts: District 1 Astoria 8 Employees District 2 Knappa 4 Employees District 3 Jewell 3 Employees 1,085 Sq. miles.

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PUBLIC WORKS

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  1. PUBLIC WORKS Pavement Preservation Program

  2. Clatsop County Overview 231 MILES TOTAL 184 MILES SURFACED 47 MILES GRAVEL Three Districts: District 1 Astoria 8 Employees District 2 Knappa 4 Employees District 3 Jewell 3 Employees 1,085 Sq. miles

  3. Road Preparations Drainage work Vegetation Work

  4. 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.

  5. 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

  6. 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.

  7. 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.

  8. 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.

  9. 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.

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