Parkville Road at Ash Creek Bridge (No. 06-0220) Replacement Project

The Parkville Road at Ash Creek Bridge Replacement Project involves replacing the existing bridge with a new single-span, 102-foot-long by 27.5-foot-wide reinforced concrete cast-in-place post-tensioned box girder bridge to meet current design standards set by Shasta County and the American Association of State Highway and Transportation Officials. The project includes widening the bridge and roadway approaches, replacing railings with steel, and adding approach guardrails to accommodate current traffic volumes and enhance safety. Construction is scheduled for a brief period between December 18, 2025, and January 16, 2026, with all in-water work strictly limited to June 15 through October 15 to protect aquatic species and habitats in Ash Creek. The project is led by the Shasta County Department of Public Works and funded through the FHWA Highway Bridge Program, with environmental compliance overseen by Caltrans District 2. Strict environmental mitigation measures are required, including stormwater pollution prevention plans, dust and spill control, use of non-toxic hydraulic fluids, and proper handling and disposal of hazardous materials such as lead-contaminated soil, treated wood waste, and asbestos. All work must adhere to Caltrans Standard Specifications (2025 Edition), California Test No. 227 for gravel cleanness, and regulations under the Clean Water Act, Endangered Species Act, and California Code of Regulations Title 22. Contractors must obtain permits from the California Department of Fish and Wildlife and the U.S. Army Corps of Engineers and comply with wildfire prevention protocols requiring spark arresters on all internal combustion engines. In the event human remains are discovered, all work must stop immediately and be reported to the Shasta County Sheriff-Coroner and the Native American Heritage Commission. Final inspection and acceptance are conducted on-site by Shasta County, with oversight of environmental compliance handled by Caltrans personnel, and no formal contract pricing, payment details, or procurement evaluation factors are provided in the available documentation.