The monumental blast furnaces forged the steel that built the Golden Gate, George Washington, and Verazzano-Narrows Bridges; the Empire State Building, Rockefeller Center, and the World Trade Center; and the Hoover Dam

Opened in 1925, the silos stored grain for trans-shipment between freighter and rail car. It is massive! In 1935, the elevator was taken over by Cargill, a company that owned more than 100 elevators, silos and warehouses for grain and would go on to become one of the largest food conglomerates and the largest privately held corporation in the U. S. The opening of the St. Lawrence Seaway in 1959 provided freighters direct access to the Great Lakes ending the need for the transfer facility and it closed in 1965.

Lawrence, Massachusetts was one of the first and most successful planned industrial towns in the United States. The mile-long canal, dug primarily by Irish immigrant laborers, powered massive mill buildings in which young immigrnat women tended to the spinning and weaving of wool and cotton textiles. Each mill had a sluice gate through which water poured from the canal to provide force to turbines that powered the machines and generators.

The lift bridge was built after Icy conditions led to a freak accident that destroyed an earlier bridge constructed in 1930.

Steel lift bridge carrying Route 7 across the Hackensack River between Jersey City and Kearney. Constructed between 1927 and 1930. The bridge was designed by Sigvald Johannesson, designer of the nearby Pulaski Skyway. Named after H. Otto Wittpenn - a politiical rival of Woodrow Wilson and mayor of Jersey City when the Lincoln Highway was mapped through the town.

Built in 1914, the 8th Street Bridge was a bascule automobile bridge (an electric-operated counterweighted draw bridge) crossing the Passaic River just below the highest navigable point at the Clifton falls.

Housatonic is a mill town on the Housatonic River near Great Barrington. Built between 1850 and 1866, the mills produced cotton yarns and woven jacquards, primarily bedspreads. The com