Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD
Significance: The federal section of the Baltimore-Washington Parkway was constructed to provide a dignified entrance to the nation's capital. The parkway also provided a new traffic artery that relieved conge... More
Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD
Significance: The federal section of the Baltimore-Washington Parkway was constructed to provide a dignified entrance to the nation's capital. The parkway also provided a new traffic artery that relieved conge... More
Baltimore-Washington Parkway, Greenbelt, Prince George's County, MD
Significance: The federal section of the Baltimore-Washington Parkway was constructed to provide a dignified entrance to the nation's capital. The parkway also provided a new traffic artery that relieved conge... More
Crater Lake National Park Roads, Klamath Falls, Klamath County, OR
Significance: The primary roads in Crater Lake National Park were designed and constructed to provide visitor access to the park's scenic features, which are largely concentrated along the rim of Crater Lake. ... More
Wind Cave Roads & Bridges, Hot Springs, Fall River County, SD
Significance: The Wind Cave National Park road system reflects the combined efforts of the National Park Service, the South Dakota State Highway Commission, and the Bureau of Public Roads to provide vehicular a... More
Wind Cave Roads & Bridges, Hot Springs, Fall River County, SD
Significance: The Wind Cave National Park road system reflects the combined efforts of the National Park Service, the South Dakota State Highway Commission, and the Bureau of Public Roads to provide vehicular a... More
Shiloh National Military Park Tour Roads, Shiloh, Hardin County, TN
Significance: Shiloh National Military Park is one of the earliest national battlefield parks. The 3,972 acre park is located in rural Hardin County in southwestern Tennessee. It was established in 1894, makin... More
Shiloh National Military Park Tour Roads, Shiloh, Hardin County, TN
Significance: Shiloh National Military Park is one of the earliest national battlefield parks. The 3,972 acre park is located in rural Hardin County in southwestern Tennessee. It was established in 1894, makin... More
Shiloh National Military Park Tour Roads, Shiloh, Hardin County, TN
Significance: Shiloh National Military Park is one of the earliest national battlefield parks. The 3,972 acre park is located in rural Hardin County in southwestern Tennessee. It was established in 1894, makin... More
Hawaii Volcanoes National Park Roads, Volcano, Hawaii County, HI
See Thurston Lava Tube, HALS HI-6, for additional documentation. Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosyst... More
Hawaii Volcanoes National Park Roads, Volcano, Hawaii County, HI
See Thurston Lava Tube, HALS HI-6, for additional documentation. Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosyst... More
Hawaii Volcanoes National Park Roads, Volcano, Hawaii County, HI
See Thurston Lava Tube, HALS HI-6, for additional documentation. Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosyst... More
Hawaii Volcanoes National Park Roads, Volcano, Hawaii County, HI
See Thurston Lava Tube, HALS HI-6, for additional documentation. Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosyst... More
Chattanooga National Military Park Tour Roads, Chattanooga, Hamilton C...
Significance: The Chickamauga and Chattanooga National Military Park tour roads provide access to select areas of the park that commemorate and interpret the conflict between Union and Confederate forces over c... More
Chattanooga National Military Park Tour Roads, Chattanooga, Hamilton C...
Significance: The Chickamauga and Chattanooga National Military Park tour roads provide access to select areas of the park that commemorate and interpret the conflict between Union and Confederate forces over c... More
Chattanooga National Military Park Tour Roads, Chattanooga, Hamilton C...
Significance: The Chickamauga and Chattanooga National Military Park tour roads provide access to select areas of the park that commemorate and interpret the conflict between Union and Confederate forces over c... More
Rocky Mountain National Park Roads & Bridges, Estes Park, Larimer Coun...
Significance: The road system of Rocky Mountain National Park contains the highest continuous highway in the United States and the highest elevation roads in the National Park Service system. The roads were co... More
Vicksburg National Military Park Roads & Bridges, Vicksburg, Warren Co...
Significance: The Vicksburg National Military Park tour roads provide access to areas of interest in the park, which commemorates and interprets the siege and defense of Vicksburg in 1863 during the Civil War. ... More
Vicksburg National Military Park Roads & Bridges, Vicksburg, Warren Co...
Significance: The Vicksburg National Military Park tour roads provide access to areas of interest in the park, which commemorates and interprets the siege and defense of Vicksburg in 1863 during the Civil War. ... More
Vicksburg National Military Park Roads & Bridges, Vicksburg, Warren Co...
Significance: The Vicksburg National Military Park tour roads provide access to areas of interest in the park, which commemorates and interprets the siege and defense of Vicksburg in 1863 during the Civil War. ... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Canyon Bridge, North Rim Trail spanning Jay Creek, Lake, Teton County,...
Significance: The Canyon Bridge and its predecessor provided vehicular access to the North Rim of the Grand Canyon of the Yellowstone via the historic road alignment. Spanning often-dry Jay Creek, the bridge c... More
Lassen Park Road, Mineral, Tehama County, CA
Significance: The Lassen Park Road a thirty mile stretch of scenic mountain road through Lassen Volcanic National Park is a classic example of early twentieth century park road design. The road, which is the so... More
Lassen Park Road, Mineral, Tehama County, CA
Significance: The Lassen Park Road a thirty mile stretch of scenic mountain road through Lassen Volcanic National Park is a classic example of early twentieth century park road design. The road, which is the so... More
Lassen Park Road, Mineral, Tehama County, CA
Significance: The Lassen Park Road a thirty mile stretch of scenic mountain road through Lassen Volcanic National Park is a classic example of early twentieth century park road design. The road, which is the so... More
Crater Rim Drive, Volcano, Hawaii County, HI
Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosystems and archaeological sites. It represents the traditional NPS ... More
Haleakala National Park Roads, Pukalani, Maui County, HI
STORED OFF SITE AND ON SITE. mchr Significance: The Haleakala National Park road system provides access to the summit and crater of the dormant volcano, Haleakala, showcasing striking views and native Hawaiian... More
Haleakala National Park Roads, Pukalani, Maui County, HI
STORED OFF SITE AND ON SITE. mchr Significance: The Haleakala National Park road system provides access to the summit and crater of the dormant volcano, Haleakala, showcasing striking views and native Hawaiian... More
Haleakala National Park Roads, Pukalani, Maui County, HI
STORED OFF SITE AND ON SITE. mchr Significance: The Haleakala National Park road system provides access to the summit and crater of the dormant volcano, Haleakala, showcasing striking views and native Hawaiian... More
Haleakala National Park Roads, Pukalani, Maui County, HI
STORED OFF SITE AND ON SITE. mchr Significance: The Haleakala National Park road system provides access to the summit and crater of the dormant volcano, Haleakala, showcasing striking views and native Hawaiian... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Crater Lake National Park Roads, Klamath Falls, Klamath County, OR
Significance: The primary roads in Crater Lake National Park were designed and constructed to provide visitor access to the park's scenic features, which are largely concentrated along the rim of Crater Lake. ... More
Wind Cave Roads & Bridges, Hot Springs, Fall River County, SD
Significance: The Wind Cave National Park road system reflects the combined efforts of the National Park Service, the South Dakota State Highway Commission, and the Bureau of Public Roads to provide vehicular a... More
Wind Cave Roads & Bridges, Hot Springs, Fall River County, SD
Significance: The Wind Cave National Park road system reflects the combined efforts of the National Park Service, the South Dakota State Highway Commission, and the Bureau of Public Roads to provide vehicular a... More
Wind Cave Roads & Bridges, Hot Springs, Fall River County, SD
Significance: The Wind Cave National Park road system reflects the combined efforts of the National Park Service, the South Dakota State Highway Commission, and the Bureau of Public Roads to provide vehicular a... More
Wind Cave Roads & Bridges, Hot Springs, Fall River County, SD
Significance: The Wind Cave National Park road system reflects the combined efforts of the National Park Service, the South Dakota State Highway Commission, and the Bureau of Public Roads to provide vehicular a... More
Wind Cave Roads & Bridges, Hot Springs, Fall River County, SD
Significance: The Wind Cave National Park road system reflects the combined efforts of the National Park Service, the South Dakota State Highway Commission, and the Bureau of Public Roads to provide vehicular a... More
Crater Lake National Park Roads, Goodbye Creek Bridge, Spanning Goodby...
Significance: This is one of the earliest examples of glue-laminate bridge work in America. Survey number: HAER OR-107-A Building/structure dates: 1954 Initial Construction
Crater Lake National Park Roads, Goodbye Creek Bridge, Spanning Goodby...
Significance: This is one of the earliest examples of glue-laminate bridge work in America. Survey number: HAER OR-107-A Building/structure dates: 1954 Initial Construction
Crater Lake National Park Roads, Goodbye Creek Bridge, Spanning Goodby...
Significance: This is one of the earliest examples of glue-laminate bridge work in America. Survey number: HAER OR-107-A Building/structure dates: 1954 Initial Construction
Mauna Loa Road, Volcano, Hawaii County, HI
Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosystems and archaeological sites. It represents the traditional NPS ... More
Shiloh National Military Park Tour Roads, Shiloh, Hardin County, TN
Significance: Shiloh National Military Park is one of the earliest national battlefield parks. The 3,972 acre park is located in rural Hardin County in southwestern Tennessee. It was established in 1894, makin... More
Shiloh National Military Park Tour Roads, Shiloh, Hardin County, TN
Significance: Shiloh National Military Park is one of the earliest national battlefield parks. The 3,972 acre park is located in rural Hardin County in southwestern Tennessee. It was established in 1894, makin... More
Shiloh National Military Park Tour Roads, Shiloh, Hardin County, TN
Significance: Shiloh National Military Park is one of the earliest national battlefield parks. The 3,972 acre park is located in rural Hardin County in southwestern Tennessee. It was established in 1894, makin... More
Chattanooga National Military Park Tour Roads, Chattanooga, Hamilton C...
Significance: The Chickamauga and Chattanooga National Military Park tour roads provide access to select areas of the park that commemorate and interpret the conflict between Union and Confederate forces over c... More
Chattanooga National Military Park Tour Roads, Chattanooga, Hamilton C...
Significance: The Chickamauga and Chattanooga National Military Park tour roads provide access to select areas of the park that commemorate and interpret the conflict between Union and Confederate forces over c... More
Chain of Craters Road, Volcano, Hawaii County, HI
Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosystems and archaeological sites. It represents the traditional NPS ... More
Vicksburg National Military Park Roads & Bridges, Vicksburg, Warren Co...
Significance: The Vicksburg National Military Park tour roads provide access to areas of interest in the park, which commemorates and interprets the siege and defense of Vicksburg in 1863 during the Civil War. ... More
Vicksburg National Military Park Roads & Bridges, Vicksburg, Warren Co...
Significance: The Vicksburg National Military Park tour roads provide access to areas of interest in the park, which commemorates and interprets the siege and defense of Vicksburg in 1863 during the Civil War. ... More
Vicksburg National Military Park Roads & Bridges, Vicksburg, Warren Co...
Significance: The Vicksburg National Military Park tour roads provide access to areas of interest in the park, which commemorates and interprets the siege and defense of Vicksburg in 1863 during the Civil War. ... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Lassen Park Road, Mineral, Tehama County, CA
Significance: The Lassen Park Road a thirty mile stretch of scenic mountain road through Lassen Volcanic National Park is a classic example of early twentieth century park road design. The road, which is the so... More
Golden Gate Viaduct, Spanning a ravine at Grand Loop Road, Kingman Pas...
Significance: The present Golden Gate Viaduct occupies the location of several historic viaducts. The original structure at Golden Gate was built in 1885 by the U.S. Army Corps of Engineers, which was responsi... More
Haleakala National Park Roads, Pukalani, Maui County, HI
STORED OFF SITE AND ON SITE. mchr Significance: The Haleakala National Park road system provides access to the summit and crater of the dormant volcano, Haleakala, showcasing striking views and native Hawaiian... More
Haleakala National Park Roads, Pukalani, Maui County, HI
STORED OFF SITE AND ON SITE. mchr Significance: The Haleakala National Park road system provides access to the summit and crater of the dormant volcano, Haleakala, showcasing striking views and native Hawaiian... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Natchez Trace Parkway, Located between Natchez, MS & Nashville, TN, Tu...
Significance: A regional Good Roads movement championed by the Natchez Trace Military Highway Association in 1916 continued an effort initiated by the Mississippi Daughters of the American Revolution (DAR) to c... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plain...
Significance: The Bronx River Parkway Reservation was the first public parkway designed explicitly for automobile use. The project began as an environmental restoration and park development initiative that aim... More
Crater Lake National Park Roads, Klamath Falls, Klamath County, OR
Significance: The primary roads in Crater Lake National Park were designed and constructed to provide visitor access to the park's scenic features, which are largely concentrated along the rim of Crater Lake. ... More
Corkscrew Bridge, Old East Entrance Road, Sylvan Pass, Lake, Teton Cou...
Significance: The Corkscrew Bridge employed an unusual engineering technique to change elevation rapidly on a steep section of the East Entrance Road near Sylvan Pass. By 1929, when it was bypassed with a road... More
Wind Cave Roads & Bridges, Hot Springs, Fall River County, SD
Significance: The Wind Cave National Park road system reflects the combined efforts of the National Park Service, the South Dakota State Highway Commission, and the Bureau of Public Roads to provide vehicular a... More
Wind Cave Roads & Bridges, Hot Springs, Fall River County, SD
Significance: The Wind Cave National Park road system reflects the combined efforts of the National Park Service, the South Dakota State Highway Commission, and the Bureau of Public Roads to provide vehicular a... More
Wind Cave Roads & Bridges, Hot Springs, Fall River County, SD
Significance: The Wind Cave National Park road system reflects the combined efforts of the National Park Service, the South Dakota State Highway Commission, and the Bureau of Public Roads to provide vehicular a... More
Wind Cave Roads & Bridges, Hot Springs, Fall River County, SD
Significance: The Wind Cave National Park road system reflects the combined efforts of the National Park Service, the South Dakota State Highway Commission, and the Bureau of Public Roads to provide vehicular a... More
Mauna Loa Road, Volcano, Hawaii County, HI
Significance: The Hawaii Volcanoes National Park road system provides access to active volcanoes and related landscapes along with varied ecosystems and archaeological sites. It represents the traditional NPS ... More
Shiloh National Military Park Tour Roads, Shiloh, Hardin County, TN
Significance: Shiloh National Military Park is one of the earliest national battlefield parks. The 3,972 acre park is located in rural Hardin County in southwestern Tennessee. It was established in 1894, makin... More
Chattanooga National Military Park Tour Roads, Chattanooga, Hamilton C...
Significance: The Chickamauga and Chattanooga National Military Park tour roads provide access to select areas of the park that commemorate and interpret the conflict between Union and Confederate forces over c... More
Vicksburg National Military Park Roads & Bridges, Vicksburg, Warren Co...
Significance: The Vicksburg National Military Park tour roads provide access to areas of interest in the park, which commemorates and interprets the siege and defense of Vicksburg in 1863 during the Civil War. ... More
Vicksburg National Military Park Roads & Bridges, Vicksburg, Warren Co...
Significance: The Vicksburg National Military Park tour roads provide access to areas of interest in the park, which commemorates and interprets the siege and defense of Vicksburg in 1863 during the Civil War. ... More
Vicksburg National Military Park Roads & Bridges, Vicksburg, Warren Co...
Significance: The Vicksburg National Military Park tour roads provide access to areas of interest in the park, which commemorates and interprets the siege and defense of Vicksburg in 1863 during the Civil War. ... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Melan Arch Bridges, ...
Significance: The nine Melan arch viaducts on Union Avenue were an integral part of the overall tour route through Vicksburg National Military Park, providing visitors safe and easy access to points of interest... More
Vicksburg National Military Park Roads & Bridges, Halls Ferry Bridge, ...
Significance: Constructed over five months in 1936-1937, the Confederate Avenue bridge spanning Halls Ferry Road is the only extant bridge of its type in the state of Mississippi. The bridge was included in th... More