A STUDY OF ANNUAL COSTS OF FLEXIBLE AND RIGID PAVEMENTS FOR STATE HIGHWAYS IN CALIFORNIA

THE SELECTION OF PAVEMENT, RIGID OR FLEXIBLE, IS THE BASIC REQUIREMENT FOR THE ECONOMIC DESIGN AND CONSTRUCTION OF HIGH-TYPE PAVEMENTS FOR INTERSTATE AND STATE HIGHWAYS. THE EFFECT AND SIGNIFICANCE OF EACH OF SIX VARIABLES IN THE BASIC FORMULA FOR MAKING PAVEMENT COST COMPARISONS WAS ESTABLISHED. THESE VARIABLES ARE' /1/ SUBGRADE QUALITY FOR SIX SUBGRADE RESISTANCE VALUES, /2/ TRAFFIC INDEXES FOR LIGHT, MEDIUM, AND HEAVY TRAFFIC, /3/ CONTRACT BID PRICES FOR ALL STATE HIGHWAY PAVEMENT CONSTRUCTION IN CALIFORNIA IN 1958 AND 1960 IN THE LOW RANGE /10 PERCENTILE VALUE/, IN THE HIGH RANGE /90 PERCENTILE VALUE/, AND FOR THE ARITHMETIC MEAN OF ALL BID PRICES, /4/ INTEREST RATES OF 3 PERCENT AND 6 PERCENT, /5/ A SERVICE LIFE OF INITIAL PAVEMENT OF 13 YEARS AND 18 YEARS WAS USED FOR FLEXIBLE PAVEMENTS AND 18 YEARS AND 26 YEARS FOR RIGID PAVEMENTS AND A SERVICE LIFE OF 13 YEARS FOR THE FIRST AND SECOND ASPHALT CONCRETE RESURFACING WAS USED FOR BOTH FLEXIBLE AND RIGID PAVEMENTS, /6/ THE ANNUAL COSTS WERE COMPUTED FOR ANALYSIS PERIODS OF 26 YEARS AND 35 YEARS, /7/ AVERAGE MAINTENANCE COSTS FOR CALIFORNIA FLEXIBLE AND RIGID PAVEMENTS WERE USED IN THE PRIMARY STUDY AND THE EFFECT OF DOUBLING AND TRIPLING THE MAINTENANCE OF FLEXIBLE PAVEMENTS VERSUS NO CHANGE IN THESE COSTS FOR RIGID PAVEMENTS WAS DETERMINED ON A SAMPLING BASIS, AND /8/ A TOTAL SHOULDER WIDTH OF 22 FT AND A 2-LANE PAVEMENT WIDTH OF 24 FT WAS USED IN THE PRIMARY STUDY AND AN ANALYSIS OF THE EFFECT OF REDUCED SHOULDER WIDTH FOR 6-LANE AND 8-LANE FREEWAYS WAS MADE ON A SAMPLING BASIS. THE INITIAL CONSTRUCTION COST WAS FOUND TO BE THE MOST DECISIVE FACTOR IN A COMPARISON OF ANNUAL COST OF PAVEMENTS. THESE COSTS CONSTITUTED 85 TO 95 PERCENT OF THE TOTAL ANNUAL COST WHILE THE MAINTENANCE COST AMOUNTED TO LESS THAN 10 PERCENT. THE ANNUAL COSTS OF RIGID AND FLEXIBLE PAVEMENTS DESIGNED FOR POOR SOIL CONDITIONS WERE MOSTLY WITHIN THE SAME PRICE BRACKET, BUT THE COSTS OF THE RIGID PAVEMENTS DESIGNED FOR EXCELLENT SOIL CONDITIONS WERE 25 TO 40 PERCENT HIGHER THAN THOSE OF FLEXIBLE PAVEMENTS. AN ANALYSIS OF THE COSTS OF FLEXIBLE PAVEMENTS WITH THREE DIFFERENT TYPES OF BASE CONSTRUCTION INDICATED THAT UNDER CERTAIN SPECIFIC TRAFFIC AND SOIL CONDITIONS EACH TYPE OF BASE PROVIDED A DEFINITE COST ADVANTAGE. THE IMPORTANCE WAS DEMONSTRATED OF MAKING PAVEMENT COST COMPARISONS ON A PROJECT-BY-PROJECT BASIS USING THE STRUCTURAL DESIGN, TRAFFIC AND COST DATA WHICH APPLY TO THE PARTICULAR AREA AND PROJECT UNDER CONSIDERATION. ESTIMATES FOR FUTURE RESURFACING COSTS SHOULD BE MADE WITH CONSIDERATION FOR ALL RESURFACING COST FACTORS RECOMMENDED FOR MAKING PAVEMENT COST COMPARISONS.

  • Record URL:
  • Supplemental Notes:
    • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
  • Authors:
    • Moyer, Ralph A
    • Lampe, Josef E
  • Publication Date: 1965

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 133-172
  • Monograph Title: Engineering economy 1963
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00201120
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Dec 12 1994 12:00AM