Amy Ross

Significance: The only operable creek crossing in Rock Creek Park, Milkhouse Ford survives as a reminder of the days when fords were plentiful in the area, and were the only means of traversing the creek. Regu More

Significance: The only operable creek crossing in Rock Creek Park, Milkhouse Ford survives as a reminder of the days when fords were plentiful in the area, and were the only means of traversing the creek. Regu More

Significance: The only operable creek crossing in Rock Creek Park, Milkhouse Ford survives as a reminder of the days when fords were plentiful in the area, and were the only means of traversing the creek. Regu More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: The Polley Lane Bridge is representative of Pratt overhead trusses built between 1895 and 1910. These bridges are a transitional group, between the wagon bridge of the mid-to-late nineteenth cent More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More

Significance: Designed by prominent engineer George B. Morison, Connecticut Avenue Bridge was described at the time of its construction as the largest concrete arch in the world. This seven-arch span was erect More