Salt Creek Canyon

The California Department of Transportation (Caltrans), District 3, is initiating a geotechnical investigation for the Salt Creek Canyon Safety Improvements Project along State Route 20 in Colusa County, targeting subsurface characterization to support the design of soldier pile walls with ground anchors or soil nail walls at specific post miles, along with associated roadway widenings and embankments. The investigation will include drilling, visual logging, in-situ testing, and sampling of soil and rock at proposed locations to inform engineering decisions for slope stabilization and earthwork construction. The project scope extends from the Colusa/Lake County line (PM 0.0) to Interstate 5 (PM R22.1), encompassing roadway improvements such as shoulder widening, pavement rehabilitation, drainage upgrades, installation of rock slope protection and bioswales, MASH-compliant guardrail end treatments, rumble strips, and updated signing and striping to enhance safety and environmental compliance. All work must align with Caltrans standards, the Manual for Assessing Safety Hardware (MASH), and state environmental regulations under CEQA, including protection of cultural resources and implementation of stormwater controls. The place of performance is designated as Williams, California, with primary activity concentrated along SR-20 in Colusa County, and all deliverables are subject to on-site inspection and acceptance by Caltrans. The solicitation number is 03-0L000, and while the contract type, estimated value, and pricing details are not disclosed, the project is currently in a forecast phase, with public review and environmental documentation in progress. Submissions for public input were due by July 7, 2026, and correspondence should be directed to Thaleena Bhattal or Jordan Schmidt at Caltrans District 3 in Marysville, with supporting documents including a location map referenced as Attachment A. No FAR clauses, special contract requirements, evaluation factors, packaging specifications, or offeror certifications are specified in the available materials, and there is no indication of a formal contract award or detailed performance timeline beyond the environmental review schedule.