Columbia River Bridge
Through truss bridge over Columbia River on US 101
Open to traffic
Built 1966

Elk Prairie Road Bridge
Concrete arch bridge over Fern Creek on Elk Prairie Road
Open to traffic
Built 1916

Fork Creek Bridge
Concrete arch bridge over Fork Creek on WA 6
Open to traffic
Built 1918; rehabilitated 1939

Fort Columbia Tunnel
Tunnel on US 101
Open to traffic
Built 1932

Halfmoon Creek Bridge
Concrete arch bridge over Halfmoon Creek on WA 6 in Lebam
Open to traffic
Built 1917; rehabilitated 1939

Heckard Road Bridge
Concrete arch bridge over Slough on Heckard Road
Open to traffic
Built 1916

Lebam Road Bridge
Concrete arch bridge over Willapa River on Lebam Road in Lebam
Open to traffic
Built 1917

Stauffer Road Bridge
Concrete arch bridge over Green Creek on Stauffer Road
Open to traffic
Built 1917

Trap Creek Bridge
Concrete arch bridge over Trap Creek on WA 6
Open to traffic
Built 1918; rehabilitated 1939

Willapa River Bridge
Through truss bridge over Willapa River on WA 6
Open to traffic
Built 1929