OHIO DEPARTMENT OF HIGHWAYS MAINTENANCE COST STUDY INTERIM REPORT

THE MAINTENANCE COST DATA GATHERED DURING A FIVE-YEAR PERIOD ARE PRESENTED IN THE FORM OF SUMMARY TABLES BY CLASS OF HIGHWAY AND TYPE OF PAVEMENT. TABLES OF MAINTENANCE COST LIST INDIVIDUAL WORK OPERATIONS WITH CORRESPONDING VALUES OF MEAN ANNUAL TOTAL COST PER MILE. BECAUSE OF THE LIMITED NUMBER OF TEST SECTIONS USED DURING THE FIVE YEARS COVERED BY THIS REPORT, READERS ARE CAUTIONED AGAINST TAKING SAMPLE MEAN VALUES GIVEN HEREIN TO BE ANYTHING BUT APPROXIMATIONS OF STATEWIDE MEAN VALUES. CONFIDENCE INTERVALS ARE SHOWN IN THE COST SUMMARY TABLES WHICH CONFIRM THE DECISION MADE A YEAR BEFORE TO INCREASE THE NUMBER OF COST TEST SECTIONS, THE SAMPLE, IN ORDER TO INCREASE THE PRECISION OF THE ESTIMATES OF STATEWIDE MEAN VALUES OF UNIT MAINTENANCE COSTS. A METHOD OF OBTAINING RELIABLE ESTIMATES OF MEAN VALUES OF MAINTENANCE COST WAS DEVELOPED EARLIER AND IS DESCRIBED IN A REFERENCE. THE PRESENT REPORT IS AN EXAMPLE OF THE METHOD OF TABULATING AND REDUCING THE COST DATA TO A USABLE FORM. BY MEANS OF THE PROCEDURES DEVELOPED BY THE PROJECT, UTILIZING A COMPUTER PROGRAM TO TABULATE COSTS AND COMPUTE MEAN VALUES AND CONFIDENCE INTERVALS, RELIABLE UNIT COSTS WILL BE AVAILABLE WHEN DATA FROM LATER YEARS ARE PROCESSED. THE COSTS SHOWN IN THIS REPORT ARE DIRECT COSTS ONLY. NO INDIRECT COSTS ARE SHOWN OR INCLUDED IN ANY OF THE COST SUMMARIES GIVEN IN THIS REPORT. /AUTHOR/

  • Corporate Authors:

    Ohio Department of Highways

    Columbus, OH  USA  43210
  • Publication Date: 1967-7

Subject/Index Terms

Filing Info

  • Accession Number: 00201776
  • Record Type: Publication
  • Source Agency: Traffic Systems Reviews & Abstracts
  • Files: TRIS
  • Created Date: Jul 27 1970 12:00AM