LIFE CHARACTERISTICS OF HIGHWAY SURFACES

ESTIMATES OF AVERAGE LIVES OF SURFACES WERE OBTAINED FROM STATISTICAL ANALYSES INVOLVING THE USE OF SURVIVOR CURVES AND SHOW AVERAGE LIVES VARYING FROM 4.5 YEARS FOR LOWER TYPE SURFACES TO 27 YEARS FOR THE HIGHER TYPES PAVED SURFACES. ON THE BASIS OF THE SERVICE LIFE DATA, FORECASTS WERE PREPARED OF THE PROBABLE MILEAGES REMAINING IN SERVICE. OF THE MILEAGES IN SERVICE ON JANUARY 1, 1946, IT IS ESTIMATED THAT 94 PERCENT OF LOW TYPE, 74 PERCENT OF THE INTERMEDIATE TYPE, AND 44 PERCENT OF THE HIGH TYPE SURFACES WILL REQUIRE REBUILDING BY JANUARY 1, 1956. AN ANALYSIS OF 92,565 MILES OF RETIREMENTS THROUGH 1945 ACCORDING TO METHOD OF RETIREMENT SHOWS THAT 58.0 PERCENT WAS RESURFACED, 29.8 PERCENT RECONSTRUCTED, 2.4 PERCENT ABANDONED, AND 9.8 PERCENT TRANSFERRED TO THE COUNTIES OR OTHER PUBLIC AUTHORITIES. DURING THE WAR PERIOD THE PERCENTAGE OF RESURFACING OF THE HIGH TYPES INCREASED NOTICEABLY. PRELIMINARY SALVAGE VALUE STUDIES AFFORD AN INDICATION OF THE AVERAGE LIFE OF THE DOLLARS INVESTED IN HIGHWAY SURFACES. BECAUSE OF SALVAGE AT RETIREMENT THE AVERAGE LIFE OF DOLLARS INVESTED IN SURFACES EXCEEDS THE AVERAGE SERVICE LIFE OF THE SURFACE ON A MILAGE BASIS. SALVAGE VALUE STUDIES AFFORD AN INDICATION OF THE AVERAGE LIFE OF THE DOLLARS INVESTED IN HIGHWAY SURFACES. BECAUSE OF SALVAGE RETIREMENT THE AVERAGE LIFE OF DOLLARS INVESTED IN SURFACES EXCEEDS THE AVERAGE SERVICE LIFE OF THE SURFACE ON A MILEAGE BASIS. SALVAGE VALUE STUDIES ON GRAVEL SURFACES CONSTRUCTED IN WISCONSIN FROM 1920 TO 1925 SHOW THE LIFE OF DOLLARS WAS 8.6 YR., WHEREAS THE AVERAGE SERVICE LIFE ON A MILEAGE BASIS WAS 5.6 YR. /AUTHOR/

  • Supplemental Notes:
    • Vol 24, pp 40-52, 2 FIG, 11 TAB
  • Authors:
    • Ferrell, F B
    • Paterick, H R
  • Publication Date: 1949

Media Info

  • Monograph Title: Proceedings of the Twenty-Eighth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 7-10, 1948
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00207323
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 19 1971 12:00AM