Solano State Route 12 Pavement Preservation (04-0AA53)

The Solano State Route 12 Pavement Preservation project (EA 04-0AA53) is a Caltrans District 4 initiative located in Solano County, California, spanning State Route 12 between postmiles 14.10 and 20.68. With a total programmed cost of approximately 37.388 million dollars, the project focuses on comprehensive roadway improvements including pavement dig-outs, cold planing, asphalt concrete overlay, and the installation of AC dikes. Additional scope elements include shoulder widening, drainage improvements, the upgrade of metal beam guardrails, traffic signing panel updates, and the installation of centerline and shoulder rumble strips and pavement delineation. The project is governed by the 2025 Caltrans Standard Specifications, with specific requirements for job site management and the handling of hazardous waste and contamination. Environmental compliance is a primary focus, as evidenced by a Mitigated Negative Declaration under CEQA and the requirement for various permits, including a 1602 Lake and Streambed Alteration Agreement and a Section 401 Clean Water Act Permit. Strict protocols are in place for the delineation of Environmentally Sensitive Areas using high-visibility markings and the implementation of biological inspection measures for pipes, culverts, and open trenches. The project also adheres to Title VI of the Civil Rights Act and the Americans with Disabilities Act to ensure non-discrimination and accessibility.