Review Category : Iconic Structures

The story of the Sloss Furnace Company is more than a story about a historic manufacturing plant. Like most structures, the iron-producing furnaces were built to generate income for the owners by filling a product need produced at a competitive price that utilized locally available raw materials and human capital.

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One of America’s greatest bridges, carrying the heaviest traffic in Northern California.

The San Francisco–Oakland Bay Bridge (henceforth, Bay Bridge), completed November 12, 1936, during the Great Depression, remains one of the world’s greatest bridges. Together with its neighbor, the Golden Gate Bridge, it represents the culmination of more than 100 years of bridge engineering development in the US. After its opening, the bridge, which connects San Francisco and Oakland, soon became known as the “workhorse of Northern California,” carrying the heaviest traffic in the region. As part of Interstate 80, it remains the busiest traffic link in Northern California carrying on its two decks up to 280,000–300,000 vehicles per day, or more than 13,000 per peak hour.

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The most famous bridge in the world, a symbol of San Francisco and American ingenuity.

The Golden Gate Bridge is one of the world’s most famous and admired structures. Spanning the picturesque Golden Gate Strait north of San Francisco, the bridge transforms the strait into a more beautiful and dramatic setting. This unique site and its bridge are a graceful and majestic entry into the San Francisco Bay, a breathtaking sight welcoming vessels from all over the Pacific.

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Safety renovations for the Statue of Liberty.

When Keast & Hood, Structural Engineers were contacted one day in April 2009 and asked to be at the Statue of Liberty the following Monday, the authors had yet to learn what to expect. What followed was a four-year journey that would take them to nearly every interior corner of the iconic National Monument and UNESCO World Heritage Site. That journey, with a design team led by Mills + Schnoering Architects working under the auspices of the National Park Service, resulted in significant life-safety improvements to the Monument as described in the June 2014 Structure article Designing Life Safety Renovations for the Statue of Liberty.

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Othmar Ammann’s George Washington Bridge, NYC

The many 19th century engineering design-proposals to span the Hudson River between New York City and New Jersey reveal a progressive shift from heavy rail-bridge designs to lighter bridges, as the era burst into the vehicle age in the 1920s. Before then, ferries and car floats transferred freight, horse-drawn carriages, goods, and a few “horseless carriages” across the Hudson River to and from Manhattan, to connect with various rail companies to complete the land transport. With suburban development, combined with the popularity of the automobile, a public outcry developed for the expansion of roads and bridges.

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