Delaware River Drive was created in 1911.
Delaware River Port Authority was created in 1951.
Delaware River Basin Commission was created in 1961.
Martholme Viaduct was created in 1877.
Varda Viaduct was created in 1916.
Topolog Viaduct was created in 1989.
Lethbridge Viaduct was created in 1909.
Altenbeken Viaduct was created in 1853.
Schmittentobel Viaduct was created in 1903.
Bloomington Viaduct was created in 1851.
Neidpath Viaduct was created in 1863.
Patterson Viaduct was created in 1829.