Mountain road 50 PM 4 to 10 (county location 179) DIG out slide material to extent of failure and fill with aggregate material getting finer as the F

The Federal Highway Administration (FHWA) awarded $299,330.00 to the California Department of Transportation (Caltrans) under the Highway Planning and Construction program (CFDA 20.205) on June 20, 2025. The project grant funds roadway stabilization and repair work on Mountain Road 50, County Location 179, in California. The specific deliverables include excavation and removal of failed slide material along the designated segment (post mile 4 to 10), backfilling the excavated area with appropriately graded aggregate material that transitions from coarser to finer materials approaching the roadway grade, and removal of incidental debris and boulders resulting from the roadway failures.

This project represents a critical infrastructure preservation effort addressing slope stability and roadway integrity concerns. The Highway Planning and Construction program supports state transportation departments in maintaining and improving highway infrastructure through formula and discretionary funding mechanisms authorized under the Infrastructure Investment and Jobs Act (IIJA). Caltrans, as the state's primary transportation agency, is responsible for executing the design and construction activities necessary to restore safe roadway conditions and prevent future failures in this area.

Project description

Mountain road 50 PM 4 to 10 (county location 179) DIG out slide material to extent of failure and fill with aggregate material getting finer as the fill rises to approach roadway grade. Remove any incidental debris and boulders from roadway from failures.