Caltrans has announced that a sand seal treatment applied to a test section of Highway 1 has resulted in a smoother surface. A sand seal is a sprayed application of asphalt emulsion followed by a covering of clean sand or fine aggregate.
Construction on this resurfacing project was completed in November 2013.
The selection of this surface treatment follows work by the UC Davis Pavement Research Center and Caltrans that tested eight sections of surface treatment on State Route 198 in Monterey County. A sand seal was applied to one of the test sections and resulted in an improvement on the highway, according to feedback from cyclists and specialized equipment used to measure the texture of the highway.
- "UC Davis Pavement Researchers to Attend SLO Bicycle Advisory Committee Meeting on Nov. 12"
Caltrans Public Affairs, November 6, 2013
- "UC Davis Pavement Research Center releases technical memo for Highway 1 resurfacing project"
Caltrans Public Affairs, October 25, 2013
- "Resurfacing begins on rough stretch of Hwy. 1 north of Cambria"
The Tribune, October 15, 2013
- "Cyclists await results after test-ride of paving options for Hwy. 1"
The Tribune, July 16, 2013
- "Local Cyclists to test out new surface options for Hwy. 1"
The Tribune, July
- "Riding Highway 1's rough road"
The Cambrian, June 8, 2013
- "Caltrans hires company to test repairs for rough pavement on Hwy. 1"
The Cambrian, May 8, 2013
- "What went wrong on Highway 1? Caltrans explains what happened and what's next"
The Cambrian, April 11, 2013
District 5 Public Information Officer
District 5 Public Affairs Chief
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