Project Details
- Location
- San Bernardino County, CA
- Contract Cost
- $12,849,500.00
- Date of Commencement
- December 2024
- Date of Completion
- In progress
- Project Owner
- Department of Transportation (DOT) - Caltrans
- Contract Number
- 08-1J3304
- Type of Contract
- Design Bid Build (DBB)
Project Description
TSI Engineering delivered comprehensive building and site improvements at the Valley Wells Safety Roadside Rest Area (NB and SB) along Interstate 5 near Mountain Pass. The project modernized facility infrastructure, site circulation, utilities, and safety systems under a federally funded Caltrans building-construction contract.
Construction included full automation of the wastewater treatment facility at the rest area with chemical dosing, biological treatment, recirculating filtration, PLC-based automation, fiber communications and SCADA integration and existing building plumbing upgrades.
Scope Highlights
- Installation of Sludge Contact Tanks, Media Tanks, Recirculation Tanks, Recirculating Sand Filter, Anoxic Treatment Filter, Effluent Storage Tank and Leach Field Disposal System.
- Installation of an Alkalinity Feed System for pH stabilization and biological process control
- Electrical upgrades included installation of a motor control center, PLC control panels, ethernet and fiber communication and cellular communication hardware
- Pavement delineation, signage, and painted pavement markings
- Temporary traffic control and water pollution control implementation
- ADA accessibility, curb, dike, and site layout improvements
- Installation of new plumbing fixtures for comfort stations
Performance
- Managed multi-discipline coordination (building, utilities, traffic, landscape)
- Achieved compliance with federal-aid requirements (ACIMG-0153(049) E)
- Executed work adjacent to active Interstate 5 corridor




