Horse Trail Underpass, Beneath Going-to-the-Sun Road Northeast of West...
Significance: The Horse Trail Underpass is one of approximately seventeen prominent masonry and concrete structures on Going-to-the-Sun Road in Glacier National Park. The 51-mile stretch of scenic road is sign... 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
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
Colonial Parkway, C&O Railroad Underpass, Milepost 12.54 of Colonial P...
Significance: The C&O Railroad Underpass represents a typical 1930s brick-faced arch reinforced concrete bridge constructed on the Colonial Parkway. Charles Peterson based his design of this bridge on the 1860... More
Greenbelt, Maryland. Federal housing project. Most street crossings ar...
Picryl description: Public domain image of children of farmers, migrant workers, Great Depression era, economic conditions, free to use, no copyright restrictions.
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
Colonial Parkway, C&O Railroad Underpass, Milepost 12.54 of Colonial P...
Significance: The C&O Railroad Underpass represents a typical 1930s brick-faced arch reinforced concrete bridge constructed on the Colonial Parkway. Charles Peterson based his design of this bridge on the 1860... More
Arroyo Seco Parkway, Solano Avenue Underpass, Milepost 25.09, Los Ange...
Survey number: HAER CA-265-H Public domain photograph of train tracks, railroad works, free to use, no copyright restrictions image - Picryl description
Arroyo Seco Parkway, Solano Avenue Underpass, Milepost 25.09, Los Ange...
Survey number: HAER CA-265-H Public domain photograph - historical image of California, United States, free to use, no copyright restrictions image - Picryl description
Arroyo Seco Parkway, Solano Avenue Underpass, Milepost 25.09, Los Ange...
Survey number: HAER CA-265-H Public domain photograph - historical image of California, United States, free to use, no copyright restrictions image - Picryl description
Colonial Parkway, C&O Railroad Underpass, Milepost 12.54 of Colonial P...
Significance: The C&O Railroad Underpass represents a typical 1930s brick-faced arch reinforced concrete bridge constructed on the Colonial Parkway. Charles Peterson based his design of this bridge on the 1860... More
Twentieth Street Underpass, At Railroad Reservation, Twentieth Street ...
Survey number: HAER AL-68 Public domain photograph - historical image of Alabama, United States, free to use, no copyright restrictions image - Picryl description
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
Colonial Parkway, C&O Railroad Underpass, Milepost 12.54 of Colonial P...
Significance: The C&O Railroad Underpass represents a typical 1930s brick-faced arch reinforced concrete bridge constructed on the Colonial Parkway. Charles Peterson based his design of this bridge on the 1860... 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
Colonial Parkway, C&O Railroad Underpass, Milepost 12.54 of Colonial P...
Significance: The C&O Railroad Underpass represents a typical 1930s brick-faced arch reinforced concrete bridge constructed on the Colonial Parkway. Charles Peterson based his design of this bridge on the 1860... 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
Arroyo Seco Parkway, Solano Avenue Underpass, Milepost 25.09, Los Ange...
Survey number: HAER CA-265-H Public domain photograph - historical image of California, United States, free to use, no copyright restrictions image - Picryl description
Colonial Parkway, C&O Railroad Underpass, Milepost 12.54 of Colonial P...
Significance: The C&O Railroad Underpass represents a typical 1930s brick-faced arch reinforced concrete bridge constructed on the Colonial Parkway. Charles Peterson based his design of this bridge on the 1860... More
Colonial Parkway, C&O Railroad Underpass, Milepost 12.54 of Colonial P...
Significance: The C&O Railroad Underpass represents a typical 1930s brick-faced arch reinforced concrete bridge constructed on the Colonial Parkway. Charles Peterson based his design of this bridge on the 1860... 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
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
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
Colonial Parkway, C&O Railroad Underpass, Milepost 12.54 of Colonial P...
Significance: The C&O Railroad Underpass represents a typical 1930s brick-faced arch reinforced concrete bridge constructed on the Colonial Parkway. Charles Peterson based his design of this bridge on the 1860... 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
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
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
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
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
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
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
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
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
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
Richmond, Fredricksburg & Potomac Railroad Underpass, Spanning GWMP at...
Picryl description: Public domain image of a bridge, water, historic structure, free to use, no copyright restrictions.
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
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
Underpasses mean safety for children at Greenbelt, Maryland
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
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
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
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
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