GEOLOGY AND LANDSLIDE MAPPING ALONG HIGHWAY CORRIDORS IN CALIFORNIA: FACTORS INFLUENCING LANDSLIDE POTENTIAL

Geologists with the California Geological Survey have mapped landslides long four highway corridors: Highway 50 in the Sierra Nevada, Highway 101 in the northern Coast Ranges, Highway 1 along the Big Sur Coast and Highway 60 across the San Timoteo Badlands of Riverside County. Additional studies are underway in the northern Coast Ranges and in the Transverse Ranges. For each highway corridor, they prepared a geologic map and a landslide inventory map, then prepared a map showing those landslides most likely to affect the highway and descriptions of the types of movement that could be expected. Bedrock geology is compiled from previous maps and modified, commonly with Quaternary geology and landslides added. The landslide map classifies each landslide by type, recency of activity, and confidence of interpretation. The mapping shows that the number, activity, and type of landslides are related to the underlying geology, climate and slope steepness.

• Supplemental Notes:
  • Unlike most groups and organizations that meet on a regular basis, the Highway Geology Symposium has no central headquarters, no annual fees, and no formal membership requirements. The governing body of the Symposium is a Steering Committee. Recent proceedings may be obtained from the Treasurer of the Symposium, Mr. Russell Glass.
• Corporate Authors:

  Mr. Russell Glass

  100 Wolf Cove Road
  Asheville, NC  United States  28804
• Authors:
  • Wills, C J
  • Manson, M W
  • Wagner, D L
• Conference:
  • Better Highways Through Applied Geology. 53rd Annual Highway Geology Symposium
  • Location: San Luis Obispo, California
  • Date: 2002-8-13 to 2002-8-16
• Publication Date: 2002

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 183-194

Subject/Index Terms

• TRT Terms: Climate; Geology; Highway corridors; Landslides; Mapping
• Uncontrolled Terms: Slope steepness
• Geographic Terms: California
• Subject Areas: Geotechnology; Highways; I41: General Soil Surveys; I42: Soil Mechanics; I43: Rock Mechanics;

Filing Info

• Accession Number: 00962022
• Record Type: Publication
• Report/Paper Numbers: CD-ROM
• Files: TRIS
• Created Date: Aug 8 2003 12:00AM