Significance: One of two nearly identical reinforced-concrete girder trestles on the Historic Columbia River Highway and one of four extant structures on the route that have a distinctive cap and arch concrete More
Significance: One of four tunnels on the Historic Columbia River Highway. Survey number: HAER OR-36-L Building/structure dates: 1914 Initial Construction Building/structure dates: 1948 Subsequent Work Build More
Mural artists: Dwayne Harty and Tammy Callens. Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part o More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Built through the Columbia River Gorge between 1913 and 1922, this was the first planned scenic roadway in the United States, acclaimed by the American Society of Civil Engineers as a "destination unto itself." More
Built through the Columbia River Gorge between 1913 and 1922, this was the first planned scenic roadway in the United States, considered by the American Society of Civil Engineers to be a "destination unto itse More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
The name is a takeoff on the "Tippecanoe" battlefield site name in Indiana during the Indian Wars of the early 1800s. The American forces' commander, "Old Tippecanoe" William Henry Harrison," later won the Amer More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Title, date and keywords based on information provided by the photographer. Purchase; Carol M. Highsmith Photography, Inc.; 2018; (DLC/PP-2016:103-12) Forms part of Carol M. Highsmith's America Project in the C More
Significance: One of two nearly identical reinforced-concrete girder trestles on the Historic Columbia River Highway and one of four extant structures on the route that have a distinctive cap and arch concrete More
Significance: One of two nearly identical reinforced-concrete girder trestles on the Historic Columbia River Highway and one of four extant structures on the route that have a distinctive cap and arch concrete More
Significance: One of two nearly identical reinforced-concrete girder trestles on the Historic Columbia River Highway and one of four extant structures on the route that have a distinctive cap and arch concrete More
Significance: One of two nearly identical reinforced-concrete girder trestles on the Historic Columbia River Highway and one of four extant structures on the route that have a distinctive cap and arch concrete More
Significance: A half-viaduct designed to carry pedestrians around the outer edge of a spiral section of roadway around the top of a 725' promontory on the Historic Columbia River Highway. Ingenious use of rein More
Significance: A half-viaduct designed to carry pedestrians around the outer edge of a spiral section of roadway around the top of a 725' promontory on the Historic Columbia River Highway. Ingenious use of rein More
Significance: A half-viaduct designed to carry pedestrians around the outer edge of a spiral section of roadway around the top of a 725' promontory on the Historic Columbia River Highway. Ingenious use of rein More
Significance: A half-viaduct designed to carry pedestrians around the outer edge of a spiral section of roadway around the top of a 725' promontory on the Historic Columbia River Highway. Ingenious use of rein More
Significance: A half-viaduct designed to carry pedestrians around the outer edge of a spiral section of roadway around the top of a 725' promontory on the Historic Columbia River Highway. Ingenious use of rein More
Significance: A half-viaduct designed to carry pedestrians around the outer edge of a spiral section of roadway around the top of a 725' promontory on the Historic Columbia River Highway. Ingenious use of rein More
Survey number: HAER OR-36-D Building/structure dates: 1914 Initial Construction Building/structure dates: 1918 Subsequent Work Building/structure dates: 1930 Subsequent Work National Register of Historic Pl More
Survey number: HAER OR-36-D Building/structure dates: 1914 Initial Construction Building/structure dates: 1918 Subsequent Work Building/structure dates: 1930 Subsequent Work National Register of Historic Pl More
Survey number: HAER OR-36-D Building/structure dates: 1914 Initial Construction Building/structure dates: 1918 Subsequent Work Building/structure dates: 1930 Subsequent Work National Register of Historic Pl More
Survey number: HAER OR-36-D Building/structure dates: 1914 Initial Construction Building/structure dates: 1918 Subsequent Work Building/structure dates: 1930 Subsequent Work National Register of Historic Pl More
Survey number: HAER OR-36-D Building/structure dates: 1914 Initial Construction Building/structure dates: 1918 Subsequent Work Building/structure dates: 1930 Subsequent Work National Register of Historic Pl More
Survey number: HAER OR-36-D Building/structure dates: 1914 Initial Construction Building/structure dates: 1918 Subsequent Work Building/structure dates: 1930 Subsequent Work National Register of Historic Pl More
Survey number: HAER OR-36-D Building/structure dates: 1914 Initial Construction Building/structure dates: 1918 Subsequent Work Building/structure dates: 1930 Subsequent Work National Register of Historic Pl More
Survey number: HAER OR-36-D Building/structure dates: 1914 Initial Construction Building/structure dates: 1918 Subsequent Work Building/structure dates: 1930 Subsequent Work National Register of Historic Pl More
Survey number: HAER OR-36-D Building/structure dates: 1914 Initial Construction Building/structure dates: 1918 Subsequent Work Building/structure dates: 1930 Subsequent Work National Register of Historic Pl More
Survey number: HAER OR-36-D Building/structure dates: 1914 Initial Construction Building/structure dates: 1918 Subsequent Work Building/structure dates: 1930 Subsequent Work National Register of Historic Pl More
Survey number: HAER OR-36-D Building/structure dates: 1914 Initial Construction Building/structure dates: 1918 Subsequent Work Building/structure dates: 1930 Subsequent Work National Register of Historic Pl More
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
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
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
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
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
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
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
Significance: The only stone-veneered reinforced-concrete arch bridge and one of only eight arch spans on the Historic Columbia River Highway. It is the last bridge in the Multnomah County section of the Histo More
Significance: The only stone-veneered reinforced-concrete arch bridge and one of only eight arch spans on the Historic Columbia River Highway. It is the last bridge in the Multnomah County section of the Histo More
Significance: The only stone-veneered reinforced-concrete arch bridge and one of only eight arch spans on the Historic Columbia River Highway. It is the last bridge in the Multnomah County section of the Histo More
Significance: A reinforced-concrete arch pedestrian bridge over the Lower Multnomah Falls. One of the few bridges constructed on the highway strictly for pedestrian use. Survey number: HAER OR-36-I Building/ More
Significance: A reinforced-concrete arch pedestrian bridge over the Lower Multnomah Falls. One of the few bridges constructed on the highway strictly for pedestrian use. Survey number: HAER OR-36-I Building/ More
Significance: A reinforced-concrete arch pedestrian bridge over the Lower Multnomah Falls. One of the few bridges constructed on the highway strictly for pedestrian use. Survey number: HAER OR-36-I Building/ More
Significance: One of the oldest steel truss highway bridges in Oregon and the second oldest steel truss constructed on the Historic Columbia River Highway. Provided a vital link across the Sandy River at the b More
Significance: One of the oldest steel truss highway bridges in Oregon and the second oldest steel truss constructed on the Historic Columbia River Highway. Provided a vital link across the Sandy River at the b More
Significance: One of the oldest steel truss highway bridges in Oregon and the second oldest steel truss constructed on the Historic Columbia River Highway. Provided a vital link across the Sandy River at the b More
Significance: One of the oldest steel truss highway bridges in Oregon and the second oldest steel truss constructed on the Historic Columbia River Highway. Provided a vital link across the Sandy River at the b More
Significance: One of the oldest steel truss highway bridges in Oregon and the second oldest steel truss constructed on the Historic Columbia River Highway. Provided a vital link across the Sandy River at the b More
Significance: This 400' half-viaduct was an engineer's solution to aligning the Historic Columbia River Highway between a steep unstable slope and the Oregon Washington Railroad and Navigation Company main line More
Significance: This 400' half-viaduct was an engineer's solution to aligning the Historic Columbia River Highway between a steep unstable slope and the Oregon Washington Railroad and Navigation Company main line More
Significance: This 400' half-viaduct was an engineer's solution to aligning the Historic Columbia River Highway between a steep unstable slope and the Oregon Washington Railroad and Navigation Company main line More
Significance: This 860' half-viaduct was an engineer's solution to aligning the Historic Columbia River Highway between a steep unstable slope and the Oregon Washington Railroad and Navigation Company main line More
Significance: This 860' half-viaduct was an engineer's solution to aligning the Historic Columbia River Highway between a steep unstable slope and the Oregon Washington Railroad and Navigation Company main line More
Significance: This 860' half-viaduct was an engineer's solution to aligning the Historic Columbia River Highway between a steep unstable slope and the Oregon Washington Railroad and Navigation Company main line More
Significance: This 860' half-viaduct was an engineer's solution to aligning the Historic Columbia River Highway between a steep unstable slope and the Oregon Washington Railroad and Navigation Company main line More
Significance: This 860' half-viaduct was an engineer's solution to aligning the Historic Columbia River Highway between a steep unstable slope and the Oregon Washington Railroad and Navigation Company main line More
Significance: This 860' half-viaduct was an engineer's solution to aligning the Historic Columbia River Highway between a steep unstable slope and the Oregon Washington Railroad and Navigation Company main line More
Significance: Site constraints forced Multnomah County and the Oregon State Highway Commission to select a skewed reinforced-concrete deck girder span for this location. The span's angled bents and its tall an More
Significance: Site constraints forced Multnomah County and the Oregon State Highway Commission to select a skewed reinforced-concrete deck girder span for this location. The span's angled bents and its tall an More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More
Significance: The only set of highway tunnels with adits or windows in Oregon. One of the few examples of this type of tunnel in the United States. Survey number: HAER OR-36-T Building/structure dates: 1920 More