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The original Bidwell Bar Bridge was the first steel suspension bridge in California. The $35,000, 240-foot-long (73 m) original was completed in December 1855, and was built of materials transported from Troy, New York , via Cape Horn .
The bridge connects the two parts of the city of Mostar, spanning the Neretva River. It consists of a single humpbacked arch with a 27-meter span, 4 meters in width, and 30 meters in length. The bridge was constructed using advanced architectural techniques and materials, enabling it to withstand centuries of conflict, except for the most ...
The bridge originally featured lanterns on the buttresses at either end of the bridge. [2] It replaced an earlier bridge, referred to as "the little red bridge." [4] The Ahwahnee Bridge was built in 1928 across the Merced with three arches, one spanning 42 feet (13 m) and the others spanning 39 feet (12 m), for a total length of 122 feet (37 m ...
Upon completion, the Rio Vista bridge won an American Institute of Steel Construction class IV (movable bridges) prize bridge award in 1960. [ 7 ] The main lift span weighs 750 short tons (680 t), with an equal amount in counterweights, so the lift mechanism operates 1,500 short tons (1,400 t) using two 30-horsepower (22 kW) electric motors ...
Later, seismic problems made the 1927 span unsafe in case of an earthquake, and led to the construction, and 2003 opening, of a replacement: a suspension bridge officially named the Alfred Zampa Memorial Bridge, in memory of iron worker Al Zampa, who played an integral role in the construction of numerous San Francisco Bay Area bridges. The ...
The Doran Memorial Bridge was originally known as the San Mateo Creek Bridge according to Caltrans plans. [1] [2] [3] It was named the Eugene A. Doran Memorial Bridge in 1969, after the Hillsborough police officer who was killed near the site on August 5, 1959; [4] [5] Doran's widow attended the ribbon-cutting ceremony on May 28, 1969. [6]
The California Powder Works Bridge is located about 2 miles (3.2 km) north of downtown Santa Cruz, spanning the San Lorenzo River just downstream of Henry Cowell Redwoods State Park. The bridge carries Keystone Way, a private road in the residential development known as the Paradise Park Masonic Club.
The exterior of the bridge is finished in vertical board siding, with a metal roof. [4] 2004 HAER photo. The bridge, the second to stand on the site, was built in 1862–63, after the first bridge (built 1856) was swept away during the Great Flood of 1862. Because of this flood, the new bridge was built on higher piers. [4]