Environmentally Friendly Elimination of Moss from Open-Graded Asphalt Pavement

The California Department of Transportation (Caltrans) has discovered moss growing on highways in heavily forested areas in northern coastal California (District 1). In District 1, Caltrans has used in some instances an open-graded asphalt pavement mix with few fines to provide a more porous surface that quickly drains surface water to reduce hydroplaning. The roadway segments with moss growth adjacent to the traveled way have passed skid tests, which indicate an acceptable coefficient of friction. This Preliminary Investigation sought to identify cost effective, environmentally sensitive best practices but found no published research on moss control for open-graded pavements. It reports anecdotal evidence as well as treatment options which may be applicable to such pavements.

• Record URL:
  • http://www.dot.ca.gov/newtech/researchreports/preliminary_investigations/docs/elimination_of_moss_pi_04142011.pdf
• 
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/747571624
• Supplemental Notes:
  • Preliminary Investigation requested by Deborah Harmon, California Department of Transportation, District 1.
• Corporate Authors:

  CTC & Associates LLC

  4805 Goldfinch Drive
  Madison, WI  United States  53714

  California Department of Transportation

  Division of Research and Innovation
  1227 O Street, MS-83
  Sacramento, CA  United States  94273-0001
• Publication Date: 2011-4-14

Language

• English

Media Info

• Media Type: Web
• Features: References; Tables;
• Pagination: 17p

Subject/Index Terms

• TRT Terms: Asphalt pavements; Environmental protection; Open graded aggregates; Skidding; State of the practice; Vegetation control
• Identifier Terms: California Department of Transportation
• Uncontrolled Terms: Moss
• Geographic Terms: California
• Subject Areas: Environment; Highways; Pavements; Safety and Human Factors; I15: Environment; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01352458
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: CALTRANS, TRIS, STATEDOT
• Created Date: Sep 23 2011 7:27AM