This study demonstrated the use of fiberglass roving with vegetation for erosion control of severly eroding slopes. A total of three sites were treated. Route 50, Camino and Route 41, Creston were treated in November 1977, and Route 101, Asti was treated in January 1978. The sites were selected on the basis of varying soil types and different climatological conditions. Four additional sites that were previously treated under other projects were also evaluated. The test sites were monitored with photographs, sediment troughs to determine erosion rates, field observation for vegetation emergence, and precipitation measurements during a period from the fall of 1977 to the summer of 1978. Aesthetic evaluations were performed at the Camino site on Route 50 by a review team composed of representatives from Caltrans, Department of Conservation, Division of Mines and Geology and FHWA. The fiberglass roving with vegetation was effective in reducing erosion at all the sites. Grasses, seeded prior to treatment, emerged through the fiberglass mat with little difficulty. The installed cost of the treatment is high (approximately $4,500 per acre) and should only be sued in problem areas and special cases. /FHWA/

  • Supplemental Notes:
    • This study was conducted in cooperation with the Federal Highway Administration.
  • Corporate Authors:

    California Department of Transportation

    Transportation Laboratory
    5900 Folsom Boulevard
    Sacramento, CA  United States  95819
  • Authors:
    • Nolan, M E
    • Spring, R J
    • Howell, R B
  • Publication Date: 1978-10

Media Info

  • Pagination: 101 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00189479
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-CA-78-4 Final Rpt.
  • Contract Numbers: F-5-18
  • Created Date: Apr 12 1979 12:00AM