Grand Coulee Bridge Grand Coulee Bridge The Grand Coulee Bridge, or Columbia River Bridge at Grand Coulee Dam, is a steel thru cantilever truss bridge built in 1934-1935. It carries Washington State Route 155 across the Columbia River immediately below Grand Coulee Dam, near the city of Grand Coulee, Washington. It was added to the National Register of Historic Places in 1982. The bridge was built to transport heavy equipment across the Columbia river during the construction of the dam, and thereafter as permanent highway bridge. As such, it was designed to carry a heavier load than was typical. The bridge is supported
Coulee Coulee </div> Coulee, or coulée ( or ) is a term applied rather loosely to different landforms, all of which refer to a kind of valley or drainage zone. The word "coulee" comes from the Canadian French "coulée", from the French word "couler" meaning "to flow". The term is often used interchangeably in the Great Plains for any number of water features, from ponds to creeks. In southern Louisiana the word "coulée" (also spelled "coolie") originally meant a gully or ravine usually dry or intermittent but becoming sizable during rainy weather. As stream channels were dredged or canalized, the term