SLO 166 CAPM

The SLO 166 Capital Preventive Maintenance project, managed by Caltrans District 5, focuses on the preservation of State Route 166 in San Luis Obispo County from postmile 8.9 to 16.0. The scope of work includes the asphalt pavement overlay of 14.2 lane miles of Class 3 pavement, the restoration of three drainage systems, and the upgrading of five guardrail locations to meet Manual for Assessing Safety Hardware standards. The project is classified as a Type III project under 23 Code of Federal Regulations 772, meaning it does not involve substantial realignment or capacity-increasing features. Construction is anticipated to begin in 2028 and conclude in 2030, with estimated construction costs ranging from 14,970,000 dollars to an escalated cost of 17,574,000 dollars. The project must adhere to strict environmental and technical standards, including Caltrans Standard Specifications for noise control, which limits nighttime equipment noise to 86 A-weighted decibels at 50 feet, and specific solid waste disposal and recycling regulations. Environmental clearance has been established via a Mitigated Negative Declaration and a Categorical Exclusion, with Lucas Marsalek serving as the primary environmental analysis contact.