FIELD STUDY OF EROSION CONTROL DEVICES IN OKLAHOMA

A FIELD SURVEY WAS MADE OF THE EROSION CONTROL DEVICES CONSTRUCTED SINCE 1962 IN OKLAHOMA. SEVERAL HUNDRED SITES AT WHICH ROADSIDE CONTROL DEVICES HAD BEEN CONSTRUCTED WERE EXAMINED TO MAKE A QUALITATIVE APPRAISAL OF CONDITION. A QUANTITATIVE SURVEY WAS MADE AT SOME FIFTY SITES TO DETERMINE CONDITION, HYDRAULIC PROPERTIES, AND ECONOMICS OF THE STRUCTURES IN PLACE. NO PAVED DITCH INSTALLATIONS WERE FOUND WHICH WERE UNSATISFACTORY IN EITHER OPERATION OR CONDITION. THE PAVED SECTION WAS FITTED WELL TO THE GROUND CONTOURS SO THAT DITCHSIDE EROSION WAS REDUCED TO A MINIMUM. A NUMBER OF SITES WERE OBSERVED AT WHICH ONE OR MORE SECTIONS OF THE INSTALLATION HAD BEEN OVERSIZED FOR THE DISCHARGE WHICH THE DITCH WOULD BE REQUIRED TO HANDLE. IT IS RECOMMENDED THAT THE DRAINAGE-AREA CURVES GRAPHED IN "SOIL EROSION STUDIES IN OKLAHOMA" BE USED FOR THE DETERMINATION OF THE WATERSHED DISCHARGE AT A DESIGN SECTION. THE OKLAHOMA STATE HIGHWAY DESIGN NUMBER 1 PAVED DITCH APPEARS TO OFFER A REASONABLE COMPROMISE BETWEEN SAFETY, ECONOMY, AND HYDRAULIC EFFICIENCY WHEN USED IN A ROADWAY DITCH ADJACENT TO THE TRAVEL LANES. FROM THE STANDPOINT OF SAFETY, THE OKLAHOMA STATE HIGHWAY DESIGN 2 B PAVED DITCH (12 INCHES IN DEPTH) GIVES A VERTICAL DROP IN THE DITCH SECTION WHICH APPEARS TO BE TOO DEEP FOR CONTROL OF A VEHICLE MOVING INTO IT. IF PAVED DITCHES ARE CONSTRUCTED DURING THE GRADING OPERATIONS, CARE SOULD BE TAKEN TO LEAVE NO BALDING RIDGES ALONG THE SHOULDER EDGE DURING THE TIME BETWEEN GRADING AND PAVING.

  • Supplemental Notes:
    • 63 Pp, 4 FiG, PHOT, 1 APP
  • Corporate Authors:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Keeley, J W
  • Publication Date: 1967

Subject/Index Terms

Filing Info

  • Accession Number: 00204255
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: Jul 6 1970 12:00AM