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The bridge was the first concrete-steel composite deck arch bridge built in the United States, [5] and incorporates the widest concrete arch in the Western Hemisphere. At 890 feet (270 m) above the Colorado River, it is the second highest bridge in the United States after the Royal Gorge Bridge near Cañon City, Colorado.
The bridge structure is built out of a series of panels and other steel elements, joined by rivets, and its deck consists of I-beam stringers covered by a concrete base. [ 2 ] The bridge was built in 1911, its trusses built by the American Bridge Company to a design by John W. Storrs, a prolific local bridge engineer.
It transfers the load from the superstructure, through the cap, down to the footer. The footer is the structure that transfers the loads into the ground. There are two primary types of systems: a spread footer, which is a simple concrete slab resting on bedrock; or a piling cap, which utilizes steel piles to reach sound bedrock that may be deep ...
Falsework parallel truss bridges temporarily supporting deck segment box structures Overpass under construction over Interstate 5 in Burbank, California, in July 2021 [4] [5] Sixth Street Viaduct Falsework - Bent 11 Jump Span. Shown in the background is a concrete Y-Arm.
A wave-dissipating concrete block is a naturally or manually interlocking concrete structure designed and employed to minimize the effects of wave action upon shores and shoreline structures, such as quays and jetties. One of the earliest designs is the Tetrapod, invented in 1950.
Large Xblocs (8.0 m 3 or 280 cu ft) on a trial placement area. An Xbloc is a wave-dissipating concrete block (or "armour unit") designed to protect shores, harbour walls, seawalls, breakwaters and other coastal structures from the direct impact of incoming waves.
They also repair and renovate old structures using reinforced concrete and steel. Ironworkers may work on factories, steel mills, and utility plants. A structural/ornamental ironworker fabricates and erects (or even dismantles) the structural steel framework of pre-engineered metal buildings , single and multi-story buildings, stadiums, arenas ...
The bridge's three spans are steel deck girders; the center span has girders of varying depth while the approach spans have uniform-depth girders. [3] The center bascule span is 70 feet (21 m) long, flanked by two 42-foot-long (13 m) spans. [4] The approach span road surface is a mixture of asphalt and concrete while the center span is a steel ...
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