US 550 Retaining Wall and Tunnel Repairs - Soil Nail Drilling.jpeg
Soil nail drilling at wall repair site on US 550 in August 2026
https://www.codot.gov/projects/us550walltunnelrepairs/photo-gallery/us550redmountainwall-tunnelrepairs_soilnaildrillingmp88-6_august2026.jpeg/view
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US 550 Retaining Wall and Tunnel Repairs - Soil Nail Drilling.jpeg
Soil nail drilling at wall repair site on US 550 in August 2026
