USE OF GABIONS FOR LOW WATER CROSSINGS ON PRIMITIVE OR SECONDARY FOREST ROADS

DURING THE PAST THREE YEARS, THE MODOC NATIONAL FOREST, IN NORTHERN CALIFORNIA, HAS BEEN CONSTRUCTING GABION LOW WATER CROSSINGS WITH VERY SATISFACTORY RESULTS. ONE OF THESE DESIGNS HAS PROVEN TO BE BOTH ECONOMICAL AND AESTHETICALLY PLEASING ON SECONDARY AND PRIMITIVE ROADS. BASICALLY, THE ROAD AT THE WATER CROSSING IS DESIGNED TO GIVE GOOD LINE AND GRADE THROUGH THE STREAM. THE FINAL ELEVATION OF THE LOW POINT OF THE PARABOLIC GRADE LINE IS USUALLY SIX TO 12 INCHES ABOVE THE STREAM BED ELEVATION AT THE DOWNSTREAM EDGE OF THE ROAD. GABIONS 6'-6" X 3'-3" X 3'-3" ARE PLACED AT THE FINAL GRADE LINE WITH THE UPSTREAM EDGE OF THE GABION ALONGSIDE THE DOWNSTREAM EDGE OF THE ROAD. THE GABIONS ARE BACKFILLED AND STREAM GRAVEL IS PUSHED UP BEHIND THE GABIONS TO FORM THE RUNNING SURFACE. ESSENTIALLY, THE GABIONS FORM A SIX TO 12-INCH HIGH POROUS DAM WHICH RETAINS THE STREAM GRAVEL.

  • Corporate Authors:

    Field Notes

    ,    
  • Authors:
    • Leydecker, A D
  • Publication Date: 1973-5

Media Info

  • Pagination: p. 13-6
  • Serial:
    • Volume: 5
    • Issue Number: 5&6

Subject/Index Terms

Filing Info

  • Accession Number: 00210005
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 12 1974 12:00AM