historic columbia river highway, multnomah

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Historic Columbia River Highway, Wahkeena Falls Footbridge, Spanning Wahkeena Creek near Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Wahkeena Falls Footbridge, Spanning W...

Survey number: HAER OR-36-F Building/structure dates: 1914 Initial Construction National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Horsetail Falls Bridge, Spanning Horsetail Falls Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Horsetail Falls Bridge, Spanning Hors...

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

Historic Columbia River Highway, Oneonta Tunnel, Adjacent to Historic Columbia River Highway through Oneonta Point, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Oneonta Tunnel, Adjacent to Historic ...

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

Historic Columbia River Highway - Multnomah Falls

Historic Columbia River Highway - Multnomah Falls

The original finding aid described this photograph as: Original Caption: The viewing bridge across the lower falls with the lovely long fall against the cliffs behind make a perfect photo. Location: Location:... More

Historic Columbia River Highway - Benson Bridge at Multnomah Falls

Historic Columbia River Highway - Benson Bridge at Multnomah Falls

The original finding aid described this photograph as: Original Caption: This delicate-looking but strong bridge provides an opportunity for photographing the falls. Location: Location: Oregon (45.576° N 122.... More

Historic Columbia River Highway - Parking Area Beside Roadway at Multnomah Falls

Historic Columbia River Highway - Parking Area Beside Roadway at Multn...

The original finding aid described this photograph as: Original Caption: The Byway runs between the parking area and the falls at Multnomah Falls. Location: Location: Oregon (45.578° N 122.118° W) Status: Pu... More

Historic Columbia River Highway - Visiting Multnomah Falls

Historic Columbia River Highway - Visiting Multnomah Falls

The original finding aid described this photograph as: Original Caption: Visitors at Multnomah Falls look up at the water hurtling down the sheer cliff. Location: Location: Oregon (45.576° N 122.115° W) Stat... More

Historic Columbia River Highway - Sunrise over Multnomah Falls

Historic Columbia River Highway - Sunrise over Multnomah Falls

The original finding aid described this photograph as: Original Caption: Sunlight glints through the forest above Multnomah Falls, August 2001 Location: Location: Oregon (45.576° N 122.116° W) Status: Public... More

Historic Columbia River Highway, Oneonta Gorge Creek Bridge, Spanning Oneonta Gorge Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Oneonta Gorge Creek Bridge, Spanning ...

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

Historic Columbia River Highway, Oneonta Gorge Creek Bridge, Spanning Oneonta Gorge Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Oneonta Gorge Creek Bridge, Spanning ...

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

Historic Columbia River Highway, Oneonta Gorge Creek Bridge, Spanning Oneonta Gorge Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Oneonta Gorge Creek Bridge, Spanning ...

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

Historic Columbia River Highway, Oneonta Gorge Creek Bridge, Spanning Oneonta Gorge Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Oneonta Gorge Creek Bridge, Spanning ...

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

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista House at Crown Point, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista...

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

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista House at Crown Point, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista...

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

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista House at Crown Point, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista...

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

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista House at Crown Point, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista...

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

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista House at Crown Point, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista...

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

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista House at Crown Point, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point Viaduct, Encircling Vista...

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

Historic Columbia River Highway, Crown Point, East of Corbett, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point, East of Corbett, Troutda...

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

Historic Columbia River Highway, Crown Point, East of Corbett, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point, East of Corbett, Troutda...

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

Historic Columbia River Highway, Crown Point, East of Corbett, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point, East of Corbett, Troutda...

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

Historic Columbia River Highway, Crown Point, East of Corbett, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point, East of Corbett, Troutda...

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

Historic Columbia River Highway, Crown Point, East of Corbett, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point, East of Corbett, Troutda...

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

Historic Columbia River Highway, Crown Point, East of Corbett, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point, East of Corbett, Troutda...

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

Historic Columbia River Highway, Crown Point, East of Corbett, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point, East of Corbett, Troutda...

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

Historic Columbia River Highway, Crown Point, East of Corbett, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point, East of Corbett, Troutda...

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

Historic Columbia River Highway, Crown Point, East of Corbett, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point, East of Corbett, Troutda...

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

Historic Columbia River Highway, Crown Point, East of Corbett, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point, East of Corbett, Troutda...

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

Historic Columbia River Highway, Crown Point, East of Corbett, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Crown Point, East of Corbett, Troutda...

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

Historic Columbia River Highway, Multnomah Creek Bridge, Historic Columbia River Highway spanning Multnomah Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Multnomah Creek Bridge, Historic Colu...

Survey number: HAER OR-36-H Building/structure dates: 1914 Initial Construction National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Multnomah Creek Bridge, Historic Columbia River Highway spanning Multnomah Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Multnomah Creek Bridge, Historic Colu...

Survey number: HAER OR-36-H Building/structure dates: 1914 Initial Construction National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Toothrock Tunnel, Interstate 84, eastbound, through Toothrock, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Toothrock Tunnel, Interstate 84, east...

Survey number: HAER OR-36-O National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Toothrock Tunnel, Interstate 84, eastbound, through Toothrock, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Toothrock Tunnel, Interstate 84, east...

Survey number: HAER OR-36-O National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Mosier Creek Bridge, Spanning Mosier Creek carrying Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Creek Bridge, Spanning Mosier ...

Survey number: HAER OR-36-U National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Mosier Creek Bridge, Spanning Mosier Creek carrying Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Creek Bridge, Spanning Mosier ...

Survey number: HAER OR-36-U National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Mosier Creek Bridge, Spanning Mosier Creek carrying Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Creek Bridge, Spanning Mosier ...

Survey number: HAER OR-36-U National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Mosier Creek Bridge, Spanning Mosier Creek carrying Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Creek Bridge, Spanning Mosier ...

Survey number: HAER OR-36-U National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Mosier Creek Bridge, Spanning Mosier Creek carrying Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Creek Bridge, Spanning Mosier ...

Survey number: HAER OR-36-U National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Sandy River Bridge at Troutdale, Historic Columbia River Highway spanning Sandy River, Troutdale, Multnomah County, OR

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, Historic Columbia River Highway spanning Sandy River, Troutdale, Multnomah County, OR

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, Historic Columbia River Highway spanning Sandy River, Troutdale, Multnomah County, OR

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, Historic Columbia River Highway spanning Sandy River, Troutdale, Multnomah County, OR

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, Historic Columbia River Highway spanning Sandy River, Troutdale, Multnomah County, OR

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, Historic Columbia River Highway spanning Sandy River, Troutdale, Multnomah County, OR

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, Historic Columbia River Highway spanning Sandy River, Troutdale, Multnomah County, OR

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, Eagle Creek Bridge, Spanning Eagle Creek on Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Eagle Creek Bridge, Spanning Eagle Cr...

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

Historic Columbia River Highway, Eagle Creek Bridge, Spanning Eagle Creek on Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Eagle Creek Bridge, Spanning Eagle Cr...

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

Historic Columbia River Highway, Eagle Creek Bridge, Spanning Eagle Creek on Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Eagle Creek Bridge, Spanning Eagle Cr...

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

Historic Columbia River Highway, Multnomah Falls Footbridge, Spanning Multnomah Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Multnomah Falls Footbridge, Spanning ...

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

Historic Columbia River Highway, Multnomah Falls Footbridge, Spanning Multnomah Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Multnomah Falls Footbridge, Spanning ...

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

Historic Columbia River Highway, Multnomah Falls Footbridge, Spanning Multnomah Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Multnomah Falls Footbridge, Spanning ...

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

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic Columbia River Highway at Eagle Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic...

Survey number: HAER OR-36-Q National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic Columbia River Highway at Eagle Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic...

Survey number: HAER OR-36-Q National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic Columbia River Highway at Eagle Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic...

Survey number: HAER OR-36-Q National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic Columbia River Highway at Eagle Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic...

Survey number: HAER OR-36-Q National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic Columbia River Highway at Eagle Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic...

Survey number: HAER OR-36-Q National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic Columbia River Highway at Eagle Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Eagle Creek Recreation Area, Historic...

Survey number: HAER OR-36-Q National Register of Historic Places NRIS Number: 83004168

Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy River on Stark Street at Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy R...

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

Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy River on Stark Street at Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy R...

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

Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy River on Stark Street at Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy R...

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

Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy River on Stark Street at Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy R...

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

Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy River on Stark Street at Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy R...

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

Historic Columbia River Highway, West Multnomah Falls Viaduct, West of Multnomah Falls on Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, West Multnomah Falls Viaduct, West of...

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

Historic Columbia River Highway, West Multnomah Falls Viaduct, West of Multnomah Falls on Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, West Multnomah Falls Viaduct, West of...

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

Historic Columbia River Highway, West Multnomah Falls Viaduct, West of Multnomah Falls on Historic Columbia River Highway, Troutdale, Multnomah County, OR

Historic Columbia River Highway, West Multnomah Falls Viaduct, West of...

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

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of Multnomah Falls, Troutdale, Multnomah County, OR

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of...

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

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of Multnomah Falls, Troutdale, Multnomah County, OR

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of...

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

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of Multnomah Falls, Troutdale, Multnomah County, OR

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of...

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

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of Multnomah Falls, Troutdale, Multnomah County, OR

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of...

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

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of Multnomah Falls, Troutdale, Multnomah County, OR

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of...

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

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of Multnomah Falls, Troutdale, Multnomah County, OR

Historic Columbia River Highway, East Multnomah Falls Viaduct, East of...

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

Historic Columbia River Highway, Bridal Veil Falls Bridge, Spanning Bridal Veil Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Bridal Veil Falls Bridge, Spanning Br...

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

Historic Columbia River Highway, Bridal Veil Falls Bridge, Spanning Bridal Veil Creek, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Bridal Veil Falls Bridge, Spanning Br...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, Troutdale, Multnomah County, OR

Historic Columbia River Highway, Mosier Twin Tunnels, East of Mosier, ...

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

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