SHOULDER EXPERIENCE IN ILLINOIS

IN THE CONSTRUCTION OF CAM, PAM AND BAM STABILIZED SHOULDERS, A DENSE-GRADED TRENCHED GRANULAR SUBBASE WAS USED UNDER THE PAVEMENT. THE PROBLEM OF WINTER HEAVING OF THE SHOULDERS ABOVE THE PAVEMENT WAS PARTIALLY ALLEVIATED BY THE USE OF CEMENTED SUBBASE AND ALSO BY THE USE OF OPEN-GRADED MATERIAL WHICH EXTENDED TO THE SIDE SLOPE. LONGITUDINAL UNDERDRAINS ON THE PAVEMENT EDGE MAY SERVE AS AN ALTERNATE FOR THE OPEN-GRADED SUBBASE IN REMOVING UNWANTED WATER. GRAVEL OR CRUSHED STONE WEDGE AT THE PAVEMENT EDGE TO BRING THE SHOULDER UP TO THE DERIVED GRADE, HAS BEEN USED FOR BITUMINOUS CONCRETE RESURFACING WORK. EIGHTEEN-INCH THICK BITUMINOUS CONCRETE WAS USED TO MOVE THE UNPAVED SHOULDER AREA OUT FROM THE MAINLINE WHEEL PATHS. EDGE-STRIPING IS USED TO HELP RE- TAIN TRAFFIC IN THE PAVEMENT AREA. IT IS OBSERVED THAT AL- THOUGH SHOULDER STRUCTURE ITSELF CAN BE A LIGHTER SECTION THAN THE MAINLINE PAVEMENT, DURABILITY AND UNDER-DRAINAGE REQUIREMENTS ARE SUCH THAT LOWER COSTS HAVE NOT BEEN REAL- IZED.

• Record URL:
  https://onlinepubs.trb.org/Onlinepubs/trcircular/142/142-006.pdf
• 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.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Burke, J E
• Publication Date: 1973-4

Media Info

• Media Type: Digital/other
• Pagination: p. 12-13
• Serial:
  • Highway Research Circular
  • Issue Number: 142
  • Publisher: Highway Research Board (HRB)

Subject/Index Terms

• TRT Terms: Alkali aggregate reactions; Asphalt concrete; Bituminous aggregates; Costs; Dense graded aggregates; Granular materials; Gravel; Open graded aggregates; Pozzolan; Road shoulders; Striping; Subbase materials; Subdrains
• Uncontrolled Terms: Edges; Heaving
• Subject Areas: Finance; Highways; Pavements;

Filing Info

• Accession Number: 00207557
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 31 1973 12:00AM