Puget Sound Precast manufactures precast concrete underground utilities products like catch basins, light pole bases and manholes.
Washington State Department of Transportation Certified
"The strength of precast concrete gradually increases over time. Other materials can deteriorate, experience creep and stress relaxation, lose strength and/or deflect over time. The load-carrying capacity of precast concrete is derived from its own structural qualities and does not rely on the strength or quality of the surrounding backfill materials."
- National Precast Concrete Association