Joe Cerrone, Inspector, Industrial Waste Unit, PWD, enters storm drain to search for source of oil spill, 1989
Sewer worker Anthony Holston enters sewer, 1990
Manholes like this give access to city’s sewer system, 1961
Sewer Inspections: Vintage Images
Wood truss drawbridge, Orthodox Street over Frankford Creek, 1899 [Detail]
Bridge Street, intermediate pier, ca. 1896 [Detail]
Bridge Street Draw, intermediate pier, ca. 1896 [detail]
Bridge Street Draw, intermediate pier, ca. 1896
Bridge Street Draw, construction of piers, ca. 1896
Bridge Street Draw, Cofferdam, ca 1896 [Detail]