Battery Willapa-1 (1919-1932) - Battery Willapa-1 was a reinforced concrete, World War I 6 inch coastal gun battery on Willapa Military Reservation, Washington. The battery was unnamed. Battery construction started in Jul 1918, was completed in Sep 1918 and transferred to the Coast Artillery for use 6 Oct 1919 at a cost of $ 6,429.19. Deactivated in 1932.
World War I (1917-1918)
Part of the Harbor Defense of Willapa Harbor.
Originally built as a World War I concrete coastal gun battery with two 6" M1900 guns mounted on M1900 pedestal Barbette carriages.
The emplacements reportedly fell onto the beach in the 1940s, and by the 1960s were covered with water.