K Street Bridge, Spanning Rock Creek & Potomac Parkway, Washington, Di...
Significance: K Street was the site of the second crossing between Georgetown and Washington, with a bridge built here in 1792. The present bridge is an important link in the transportation artery that connect... More
Mount Vernon Memorial Highway, Alexandria Avenue Bridge, Mount Vernon ...
Significance: The Alexandria Avenue Bridge, also known as the Welling Underpass, was one of the first group of parkway bridges to be operated and maintained by the U.S. Government. The appearance of this bridg... More
Eagle Lake Bridge, Spanning Carriage Road on Eagle Lake Road (Route 23...
Significance: The Eagle Lake Road Bridge provides a grade separation between its namesake road (now Maine Route 3) and a carriage road connector. Such structures help ensure traffic efficiency while eliminating... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... 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
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... 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
Mount Vernon Memorial Highway, Alexandria Avenue Bridge, Mount Vernon ...
Significance: The Alexandria Avenue Bridge, also known as the Welling Underpass, was one of the first group of parkway bridges to be operated and maintained by the U.S. Government. The appearance of this bridg... More
K Street Bridge, Spanning Rock Creek & Potomac Parkway, Washington, Di...
Significance: K Street was the site of the second crossing between Georgetown and Washington, with a bridge built here in 1792. The present bridge is an important link in the transportation artery that connect... More
Mount Vernon Memorial Highway, Alexandria Avenue Bridge, Mount Vernon ...
Significance: The Alexandria Avenue Bridge, also known as the Welling Underpass, was one of the first group of parkway bridges to be operated and maintained by the U.S. Government. The appearance of this bridg... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... More
K Street Bridge, Spanning Rock Creek & Potomac Parkway, Washington, Di...
Significance: K Street was the site of the second crossing between Georgetown and Washington, with a bridge built here in 1792. The present bridge is an important link in the transportation artery that connect... More
Eagle Lake Bridge, Spanning Carriage Road on Eagle Lake Road (Route 23...
Significance: The Eagle Lake Road Bridge provides a grade separation between its namesake road (now Maine Route 3) and a carriage road connector. Such structures help ensure traffic efficiency while eliminating... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... 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
K Street Bridge, Spanning Rock Creek & Potomac Parkway, Washington, Di...
Significance: K Street was the site of the second crossing between Georgetown and Washington, with a bridge built here in 1792. The present bridge is an important link in the transportation artery that connect... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... 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
Eagle Lake Bridge, Spanning Carriage Road on Eagle Lake Road (Route 23...
Significance: The Eagle Lake Road Bridge provides a grade separation between its namesake road (now Maine Route 3) and a carriage road connector. Such structures help ensure traffic efficiency while eliminating... 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
K Street Bridge, Spanning Rock Creek & Potomac Parkway, Washington, Di...
Significance: K Street was the site of the second crossing between Georgetown and Washington, with a bridge built here in 1792. The present bridge is an important link in the transportation artery that connect... More
K Street Bridge, Spanning Rock Creek & Potomac Parkway, Washington, Di...
Significance: K Street was the site of the second crossing between Georgetown and Washington, with a bridge built here in 1792. The present bridge is an important link in the transportation artery that connect... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... More
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... 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
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... 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
Mount Vernon Memorial Highway, Alexandria Avenue Bridge, Mount Vernon ...
Significance: The Alexandria Avenue Bridge, also known as the Welling Underpass, was one of the first group of parkway bridges to be operated and maintained by the U.S. Government. The appearance of this bridg... 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
Eagle Lake Bridge, Spanning Carriage Road on Eagle Lake Road (Route 23...
Significance: The Eagle Lake Road Bridge provides a grade separation between its namesake road (now Maine Route 3) and a carriage road connector. Such structures help ensure traffic efficiency while eliminating... 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
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
Willow Run Expressway Bridge No. R01, Spanning Conrail Railway, eastbo...
Significance: This pair of bridges created a grade separation between the Willow Run Expressway and a railroad line serving the Willow Run Bomber plant (1942). The Willow Run Expressway, the first substantial ... 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