LosAngeles River down town bridges

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Information about LosAngeles River down town bridges

Published on December 29, 2007

Author: cooper

Source: authorstream.com

The First, Fourth, Sixth, and Seventh:  The First, Fourth, Sixth, and Seventh By Grace Pak Getty Intern August 2007 Why build a bridge?:  Why build a bridge? The bridges of Los Angeles began in conjunction with the rest of the country’s city beautiful movement. What is city beautiful? --> Cities like Washington D.C. and Chicago made a push to beautify their poverty stricken city with grand architectures and renovations of civic centers. Los Angeles joined in the race to clean up and beautify. In Style:  In Style Like the city of Chicago, Los Angeles used the beux arts style to unify their monuments. (top right) Warner Brothers Hollywood Theatre. Italian renaissance. (bottom right) Security Trust & Savings Building. Italian renaissance revival. Beaux Arts?:  Beaux Arts? In French, the term beaux arts means fine arts. Based on ideas taught at the legendary École des Beaux-Arts in Paris, the Beaux Arts style flourished between 1885 and 1920. Combining ancient Greek and Roman forms with Renaissance ideas, Beaux Arts is an eclectic Neoclassical style. Colossal masonry buildings are highly ornamented with garlands, flowers or shields. Often you'll find a profusion of columns, pilasters, balustrades and window balconies. Because of the size and grandiosity of these buildings, Beaux Arts became the favored style for court houses, museums, railroad terminals and government buildings. #1 Please.:  #1 Please. First Street Bridge:  First Street Bridge height of 1,300ft(Cut Elev) length of 2,032 ft Overseen by Merrill Butler and completed in 1929 during the first big wave of bridges. The first large wave of bridges came in the ten year span between 1920-30 with the completion of 20 bridges (44%). Concrete vaulting Retrofitted in 1996 And seen in The Last Action Hero (1993) Neo Classical:  Neo Classical Revival of the Neo Classical style. What makes a bridge Neo classical? Napoleon to the First street Bridge:  Napoleon to the First street Bridge Neoclassical:  Neoclassical Revival of the classics - late baroque and renaissance. Geometric, symmetrical, exact, grid like. Popularized in the mid 18th century and reaching its height during the Napoleon era (c. 1800) Slide10:  Four! Fourth Street Bridge:  Fourth Street Bridge 1,890 ft (Cut Elev) length of 1300 ft long Completed in 1931 in the second largest wave of bridges. 33% of the bridges were built in the ten year span of 1930-40. In 1941 it replaced the last remaining wooden bridge. Gothic Style - Movement following the Romanesque. Accented with heavy concrete architecture and pointed arches. Fourth Cont’d:  Fourth Cont’d Think Frankenstein With a “pointed arch hat” Slide13:  And if Frankenstein had to choose a bridge to walk on… Slide15:  (To the top right) lancet arched pylons (Bottom) A view from afar but look really carefully and you can see the trefoil railing. How Gothic? Maroon 5:  Maroon 5 6:  6 Sixth Street Bridge:  Sixth Street Bridge Finished in 1932 3,546 ft (Cut Elev) and a length of over 3000ft Cost 2.3 million dollars Has a roadway 46 feet wide, with sidewalks on either side. In 1986, the Caltrans’ bridge survey found the 6th Street Viaduct eligible for inclusion in the National Register of Historic Places (NRHP). Iron man:  Iron man It is composed of three independent structures: the reinforced concrete on the west portion the central steel arch section over the Los Angeles River and the reinforced concrete east on the portion And starring…the Sixth Street Bridge:  And starring…the Sixth Street Bridge An ILL bridge:  An ILL bridge Alkali-Silica Reaction aka ASR is when the silica in the sand and the gravel used to make concrete reacts with the alkali in the cement. This often produces a gel like substance that expands when exposed to the water, creating cracks on the concrete. 70% chance of collapsing if hit by an earth quake. Lucky #7:  Lucky #7 The seventh street bridge is maybe not the most attractive of the downtown bridges, but it’s definitely the weirdest. -Lewis MacAdams Reminds me of the…:  Reminds me of the… Ponte Vecchio Not the Ponte Vecchio:  Not the Ponte Vecchio 5,300 ft long 1,530 ft (Cut Elev) was built on top of an existing bridge, in 1927 Lower level was used as a railway. Upper level was added for automobiles. Only the top is navigable. Slide25:  So long Bridges…

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