REPORT OF THE COMMITTEE ON MAINTENANCE COSTS
THE RISE IN THE MAINTENANCE COST INDEX DURING THE PAST 20 YEARS IS REVIEWED. THE FORMULA DEVISED FOR THE ALLOCATION OF FUNDS ON PORTLAND CEMENT HIGHWAYS IS PRESENTED. THIS FORMULA TAKES INTO ACCOUNT SUCH FACTORS AS THE AGE OF THE PAVEMENT, THE WIDTH OF THE PAVEMENT, THE TRAFFIC ON THE SECTION, THE SOIL CONDITIONS, AND THE WIDTH OF RIGHT-OF-WAY. THIS FORMULA AS IT APPLIED TO CONCRETE ROADS WAS CHECKED AGAINST THE ACTUAL EXPENDITURES ON THE CONCRETE SURFACED SECTIONS. THE EXPERIENCE IN LOUISIANA POINTS TO THE NEED OF KNOWING THE EXACT HIGHWAY MAINTENANCE WORK LOAD BOTH IN TOTAL AND BY CONTROL SECTIONS. USING THE DATA OBTAINED OVER THE PAST YEARS, REGARDING THE VARIANCE IN MAINTENANCE COST WITH TRAFFIC AND OTHER FACTORS, TWO SEPARATE METHODS HAVE BEEN DEVISED WHICH WILL PREDETERMINE THE COST OF SURFACE MAINTENANCE ON SPECIFIC SECTIONS OF HIGHWAY. THE FIRST OF THESE METHODS USES THE BASIC DESIGN FACTORS TO PREDETERMINE THE AVERAGE COST OF MAINTENANCE OVER A PERIOD OF YEARS. FOUR BASIC FACTORS ARE CONSIDERED: (1) THE TRAFFIC ON THE SECTION MEASURED IN VEHICLES PER DAY PER TWO LANES OF PAVEMENT, (2) THE TYPE OF SUBGRADE SOIL, (3) THE THICKNESS OF THE SURFACE, AND (4) THE THICKNESS OF THE BASE AND/OR SUBBASE. THE MAINTENANCE REFERENCE INDEX NUMBER REPRESENTS THE MAINTENANCE REFERENCE REQUIRED UNDER VARYING DESIGN FACTORS. THE SECOND METHOD OF ESTIMATING SURFACE MAINTENANCE COSTS IS BASED ON THE FOLLOWING FOUR FACTORS: (1) THE OBSERVED PHYSICAL CONDITION OF THE SURFACE, (2) THE SURFACE WIDTH, (3) THE TRAFFIC EXPRESSED IN VEHICLES PER DAY PER TWO LANES OF PAVEMENT, AND (4) THE SURFACE TYPE. THIS METHOD INVOLVES THE ESTABLISHING OF A BASIC COST FOR THE MAINTENANCE OF A PARTICULAR SURFACE TYPE AND THEN MODIFYING THAT BASIC COST IN ACCORDANCE WITH THE KNOWN CONDITIONS EXISTENT ON THE PARTICULAR SECTION. AFTER OBTAINING THE FOUR SURFACE TYPE FACTORS, THEY ARE MULTIPLIED TOGETHER AND THE RESULT IS THE COMPOSITE SURFACE FACTOR. THIS FACTOR IS THEN MULTIPLIED BY THE BASIC MAINTENANCE COST. THE RESULT IS THE ESTIMATED COST PER MILE OF MAINTAINING THE SURFACE OF THE SECTION BEING INVESTIGATED.
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Supplemental Notes:
- No 155, pp 1-9, 7 FIG, 2 TAB 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.
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Authors:
- Radzikowski, H A
- Publication Date: 1957
Media Info
- Media Type: Digital/other
- Pagination: 9p
- Monograph Title: Highway maintenance studies
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Serial:
- Highway Research Board Bulletin
- Issue Number: 155
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Age; Base course (Pavements); Concrete pavements; Highway maintenance; Maintenance management; Pavements; Portland cement concrete; Soils; Subgrade materials; Surface course (Pavements); Thickness; Traffic; Width
- Uncontrolled Terms: Fund allocations; Maintenance costs; Right of way; Soil conditions
- Old TRIS Terms: Pavement width; Thickness design
- Subject Areas: Geotechnology; Highways; Maintenance and Preservation; Operations and Traffic Management; Pavements;
Filing Info
- Accession Number: 00218494
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Jul 7 1994 12:00AM