Bonneville Dam fulfilled campaign promise when FDR dedicated it Sept. 28, 1937

President Franklin D. Roosevelt fulfilled a campaign promise when construction on the $88.4 million project started in 1934.

Named for Army Capt. Benjamin Bonneville, an early explorer of what became the Oregon Trail, Bonneville Dam boasted some unique engineering designs.

Colonial-revival-style architecture was featured in the administration buildings.

The powerhouse on the Washington side opened in 1981 and the modern navigation lock in 1993. The 97-acre district around the dam was added to the National Register of Historic Places in 1986. Read more.