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The Columbia River ( Upper Chinook: Wimahl or Wimal; Sahaptin: Nch’i-Wàna or Nchi wana; Sinixt dialect swah'netk'qhu) is the largest river in the Pacific Northwest region of North America. [11] The river forms in the Rocky Mountains of British Columbia, Canada. It flows northwest and then south into the U.S. state of Washington, then turns west to form most of the border between Washington ...
The Lewis and Clark Bridge is a cantilever bridge that spans the Columbia River between Longview, Washington, and Rainier, Oregon. At the time of its completion, it had the longest cantilever span in the United States. [1] The bridge was opened on March 29, 1930, as a privately owned bridge named the Longview Bridge.
This is a list of bridges and other crossings of the Columbia River from the Pacific Ocean upstream to its source.
The Columbia River, Klamath River in northern California, Pit River in northern California, and Fraser River in southern British Columbia are the only four rivers connecting the watersheds on the east side of the Cascade Range to the Pacific Ocean. Each river has carved out a gorge through the Cascades. The Columbia River Gorge marks the state line between Oregon and Washington, and its wide ...
Longview is generally about 7 °F (4 °C) cooler than Portland. Located about 80 miles (130 km) inland across a stretch of relatively flat ground, the Longview skies can be overcast due to moisture from the Pacific Coast marine layer. The Columbia River gorge permits an exchange of air between eastern and western Washington.
The Columbia River Estuary is situated on the Oregon – Washington border and the Pacific Coast of the United States. It was traditionally inhabited by the Chinook Native Americans and discovered by settlers in 1788. The Estuary plays host to a plethora of species of marine and terrestrial flora and fauna, and multiple conservation ...
Astoria–Megler Bridge. The Astoria–Megler Bridge is a steel cantilever through- truss bridge in the Pacific Northwest region of the United States that spans the lower Columbia River. It carries a section of U.S. Route 101 from Astoria, Oregon, to Point Ellice near Megler, Washington. Opened in 1966, it is the longest continuous truss bridge ...
Map of the Columbia drainage Basin with the Columbia River highlighted and showing the major tributaries