Arch Cape Creek Bridge
Wooden bridge over Arch Cape Creek on US 101
Open to traffic
Built 1937

Arch Cape Tunnel
Tunnel under Arch Cape on US 101
Open to traffic
Built 1937

Astoria-Megler Bridge
Through truss bridge over Columbia River on US 101 in Astoria
Open to traffic
Built 1966

Austins Point Half Viaduct
Wooden bridge over Austins Point on US 101
Open to traffic
Built 1933

Broadway Bridge
Concrete arch bridge over Necanicum River on W. Broadway in Seaside
Open to traffic
Built 1924

East Fork Humbug Creek Bridge
Wooden bridge over East Fork Humbug Creek on US 26
Open to traffic
Built 1934

Lewis & Clark River Bridge
Bascule bridge over Lewis & Clark River on HWY 105
Open to traffic
Built 1924

Neawanna Creek Bridge
Concrete deck girder bridge over Neawanna Creek on U.S. 101 in Seaside
Open to traffic
Built 1930

Nehalem River Bridge
Concrete arch bridge over Nehalem River on US 26
Open to traffic
Built 1939

New Youngs Bay Bridge
Vertical lift bridge over Youngs Bay on US 101 in Astoria
Open to traffic
Built 1964

North Fork Nehalem River Bridge
Deck truss bridge over North Fork Nehalem River on OR 53
Open to traffic
Built 1937

Skiberene Bridge
Stringer bridge over Necanicum River on U.S. 101/U.S. 26
Open to traffic
Built 1930

Soapstone Creek Bridge
Concrete arch bridge over Soapstone Creek on OR 53
Open to traffic
Built 1928

West Fork Humbug Creek Bridge
Wooden bridge over West Fork Humbug Creek on US 26
Open to traffic
Built 1934

Willuski River Bridge
Vertical lift bridge over Willuski River on OR 202
Open to traffic
Built 1980

Youngs Bay Bridge
Bascule bridge over Youngs Bay on HWY 105
Open to traffic
Built 1921