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The Duluth Aerial Lift Bridge Claude Allen Porter Turner (July 4, 1869 – January 10, 1955) was an American structural engineer who designed a number of buildings and bridges, particularly in the midwestern U.S. states of Iowa , Minnesota , and Wisconsin .
A masonry arch bridge, typically designated as a masonry bridge, stone bridge, or vaulted bridge, represents a specific construction technique.However, it is primarily regarded as a prominent category of bridges, employed from antiquity until the early 20th century.
The James E. Roberts Memorial Bridge is a 1,400 foot two-lane highway bridge along the California State Route 120/California State Route 49 concurrency, in Tuolumne County, California. The bridge spans the Tuolumne River just north of Lake Don Pedro , near the community of Chinese Camp .
Charles Henry Purcell (27 January 1883 – 7 September 1951) [1] was one of the most distinguished civil engineers in the United States during the 20th century. He was the chief engineer of the San Francisco - Oakland Bay Bridge, which was his most notable design.
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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]
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 ...
Construction work has expanded and continued into 2015 as part of the overall $197-million Route 79/Braga Bridge Improvement Project. [6] Construction-related detours and delays were expected through at least the summer of 2016. [7] In October 2016, all lanes of the bridge were open for travel and construction was finished.