PAVEMENT CONDITION STUDIES--REGION 6

INCREASED USE OF PAVED BITUMINOUS ROADWAY SURFACES IN REGION 6 FORESTS HAS RESULTED IN THE NEED FOR AN OBJECTIVE, QUANTITATIVE METHOD FOR EVALUATING PAVEMENT PERFORMANCE. THE ECONOMIC BENEFITS OF EXTENSIVE USE OF PAVED FOREST ROADS CAN ONLY BE EVALUATED AS EXPERIENCE WHEN THE COSTS INVOLVED IS DOCUMENTED. REAL COSTS WILL ONLY BE KNOWN WHEN PAVEMENT LIFE IS KNOWN. THE STUDY DESCRIBED IN THIS REPORT WAS UNDERTAKEN FOR TWO PRINCIPAL REASONS. FIRST, IT WAS IMPERATIVE THAT A BASE OR REFERENCE RATING OF A REPRESENTATIVE NUMBER OF PAVED ROADS BE MADE SO THAT FUTURE RATINGS WOULD PROVIDE CONCLUSIONS CONCERNING PAVEMENT PERFORMANCE OVER A MEASURED TIME PERIOD. AT THE SAME TIME, SOME CONCLUSIONS CONCERNING PAVEMENT PERFORMANCE REGION-WIDE COULD BE OBTAINED. SECOND, SOME EXPERIENCE WITH A RATING SYSTEM NEEDED TO BE DEVELOPED. THE REGION HAS NO SUCH STANDARD PROCEDURES. TO ESTABLISH AN OBJECTIVE, VALID SYSTEM SOME CONSIDERATION OF SPECIAL USE CONDITIONS FOR FOREST SERVICE ROADS WAS IN ORDER. ACCORDINGLY, THE WORK CONSIDERED THE QUESTION OF THE VALIDITY OF THE RATING SYSTEM ITSELF. THE STUDY BEGAN WITH A BRIEF REVIEW OF RATING METHODS AND INSTRUMENTATION USED BY OTHER AGENCIES. THE SYSTEM EVENTUALLY USED WAS MODELED AFTER THAT CURRENTLY EMPLOYED BY THE WASHINGTON STATE HIGHWAY DEPARTMENT. THE FINAL REPORT INCLUDES RATINGS ON SOME 465 LANE MILES OF ROAD IN 15 FORESTS IN WASHINGTON AND OREGON. THE RATINGS ARE BASED UPON EVALUATION OF EACH PAVEMENT IN ONE-HALF MILE INCREMENTS. SOME PAVEMENTS WERE RATED IN BOTH DIRECTIONS OF TRAVEL. CERTAIN OTHER INFORMATION CONCERNING PAVEMENT AGE, CONDITION AND CONSTRUCTION WAS OBTAINED FROM INDIVIDUAL FORESTS. THESE FACTORS WERE ANALYZED TO ARRIVE AT CONCLUSIONS RELATIVE TO THE STUDY PURPOSE.

  • Supplemental Notes:
    • 1 APP
  • Corporate Authors:

    US Forest Service

    1400 Independence Avemue, SW
    Washington, DC  United States  20250
  • Authors:
    • Schroeder, W L
  • Publication Date: 1972-9

Media Info

  • Features: Figures; Tables;
  • Pagination: 16 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00206089
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 20 1974 12:00AM