01/16/2026
In December 2025, we wrapped up an important private road creek crossing upgrade and stream restoration project in Tumwater, WA—improving long-term access for residents while restoring natural stream function for better fish passage and connectivity.
Our crews built a temporary gravel access road, removed the existing 9-foot-diameter CMP culvert, more than 120 eco blocks, large concrete slabs, and associated fill and armoring, and installed a 90-foot-long aluminum structural plate underpass provided by the contracting agency. The stream channel was reconstructed through the new structure with pools, meander bars, and habitat features, and supplemented with rootwad logs downstream. Following installation, the structure was backfilled, the private road was rebuilt, temporary access was removed, and disturbed areas were fully restored.
This project required tight sequencing, strong erosion and sediment control, and constant adjustments due to limited access and record-breaking rain events that increased flows during construction. Congratulations to our project team for delivering quality work under tough conditions while keeping safety first—this is true East Slope quality, built the right way.