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Pavement Preservation in South Carolina

Pavement Preservation in South Carolina. J. C. “Clem” Watson, P.E. Chief Engineer for Operations South Carolina Department of Transportation . Why is pavement preservation important to SCDOT?. Money and Miles. Miles. SCDOT maintains the 5 th largest road system in the nation.

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Pavement Preservation in South Carolina

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  1. Pavement Preservation in South Carolina J. C. “Clem” Watson, P.E. Chief Engineer for Operations South Carolina Department of Transportation

  2. Why is pavement preservation important to SCDOT? Money and Miles

  3. Miles • SCDOT maintains the 5th largest road system in the nation. • Approximately 41,500 centerline miles • Over 90,000 lane miles

  4. Money • Lowest receipts per mile in the nation • SCDOT receives $31,685 per mile • National average is $128,538

  5. What does this have to do with preservation? • Economics – preservation is cheaper to perform with more bang for your buck

  6. Treatment Comparison

  7. Keys to Success • Roads have to be in good condition • Use the right treatment on the right road at the right time • Must have a well-qualified contractor • Should have dedicated funding

  8. Challenges • Getting away from worst first • Educating the public • Industry resistance

  9. Optimize Treatment Selection • Find the optimal combination of Reconstruction, Rehabilitation, and Preservation Treatments • Goal is to increase the Remaining Service Life (RSL) of the system while addressing some of the really bad roads and minimizing the amount becoming really bad

  10. Bucky the Beaver

  11. SCDOT’s Strategy • Use Pavement Management data to categorize road candidates • Distribute the maintenance funding to each category based on the estimated cost of need for that category

  12. Example of SCDOT’s Federal Aid System

  13. Types of Preservation Surface Treatments used by SCDOT • Crack Seal • Chip Seal • Microsurfacing • Ultra-Thin Asphalt Overlays

  14. Which treatment? • Pavement condition • Traffic volumes • The location of the road (rural or urban) • The availability of materials and approved contractors • The cost effectiveness of the treatment • Volume of work

  15. Table 7: Treatment Selection Matrix

  16. Life Cycle Cost *If milling of the pavement is required these costs will increase

  17. Summary • SCDOT could not adequately maintain our large system with the limited resources available without a pavement preservation program • Without preservation, it’s easy to see how quickly our system would deteriorate • Treatment selection critical for success

  18. Questions?

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