20/21 Surface Treatment Project

The project we’re presenting meets the safety and sustainability needs of California’s San Luis Obispo County visitors and residents. Through the course of this work, we’ve upgraded or installed 29 ADA-compliant curb ramps, improved 9 ADA-compliant parking stalls, and resurfaced 60 miles of roadway, some of that including bike lanes, making this a truly inclusive, multi-modal success story.
The County of San Luis Obispo maintains over 1,100 miles of paved road. Our 5-year Pavement Management Program (PMP) plans 55-60 miles of road to be surface-treated each year.
The County has several cost-effective options that allow us to be proactive in rehabilitating roads rather than reacting to deterioration requiring complete reconstruction. Micro-surfacing is one of the most versatile tools we currently use for road maintenance due to its cost-effectiveness and long-lasting results.
In the 20/21 surface-treatment project, partnerships with property owners, county staff, other government agencies, community advisory groups, and private contractors were key to our success.
County crews filled potholes and sealed cracks in the pavement in preparation for resurfacing. The contractor removed raised pavement markings, applied the micro surfacing, re-striped the road, re-installed raised pavement markings and added back centerline rumble strips. This combination is part of our PMP maintenance strategy to increase the overall miles of roadway treated each year.
The work area included 18.5 miles in the Paso Robles Area, 6.8 miles in the Templeton Area, 0.4 miles in Morro Bar Area and 34.4 miles in the Cayucos and Morro Bay area, including entire historical downtown Cayucos.
The County applied a Type II micro-surface treatment, with an application rate of 20lbs/SY to the community of Cayucos. The contract was approximately $924,000 in Cayucos, or $55,662 per mile to raise the average Pavement Condition Index from 52 to 82 over 16.6 miles.
We involved the Cayucos Advisory Committee early in the design process. One of the biggest concerns was that improvements would eliminate prime street parking in downtown. Starting with a clean slate, and using efficient, consistent standards, the project increased the overall parking count by 2 stalls.
In alignment with the county’s ADA Transition Plan for Public Rights of Way, this contract upgraded 26 existing ADA curb ramps at road intersections. We also improved 9 existing ADA parking stalls and installed 3 new curb ramps for the ADA parking stalls.
This project installed a screen device that catches trash 5mm or larger flowing from the street into storm drainage on N. Ocean Avenue in Cayucos. It is the county’s first full-capture treatment system, consistent with the County’s Trash Implementation Plan.
All this work was possible because of partnerships with Cayucos Advisory Committee, private contractors and property owners, Cayucos Water Company, County Parks and Recreation, and other county construction projects.