Historic Columbia River Highway, Sandy River Bridge at Troutdale, Hist...
Significance: First modern bridge constructed on what became the Historic Columbia River Highway. Designed by the premier bridge engineering firm of Waddell and Harrington, which also created the 1912 Steel Br... More
Historic Columbia River Highway, Sandy River Bridge at Troutdale, Hist...
Significance: First modern bridge constructed on what became the Historic Columbia River Highway. Designed by the premier bridge engineering firm of Waddell and Harrington, which also created the 1912 Steel Br... More
Historic Columbia River Highway, Sandy River Bridge at Troutdale, Hist...
Significance: First modern bridge constructed on what became the Historic Columbia River Highway. Designed by the premier bridge engineering firm of Waddell and Harrington, which also created the 1912 Steel Br... More
Historic Columbia River Highway, Sandy River Bridge at Troutdale, Hist...
Significance: First modern bridge constructed on what became the Historic Columbia River Highway. Designed by the premier bridge engineering firm of Waddell and Harrington, which also created the 1912 Steel Br... More
Historic Columbia River Highway, Sandy River Bridge at Troutdale, Hist...
Significance: First modern bridge constructed on what became the Historic Columbia River Highway. Designed by the premier bridge engineering firm of Waddell and Harrington, which also created the 1912 Steel Br... More
Historic Columbia River Highway, Sandy River Bridge at Troutdale, Hist...
Significance: First modern bridge constructed on what became the Historic Columbia River Highway. Designed by the premier bridge engineering firm of Waddell and Harrington, which also created the 1912 Steel Br... More
Historic Columbia River Highway, Sandy River Bridge at Troutdale, Hist...
Significance: First modern bridge constructed on what became the Historic Columbia River Highway. Designed by the premier bridge engineering firm of Waddell and Harrington, which also created the 1912 Steel Br... More