George Washington Bridge Construction
The George Washington Bridge stands high above the Hudson River, its eastern end resting on the shores of Manhattan, its western end embedded in the wooded bluffs of New Jersey's Palisades. Twice as long as any previous suspension bridge, it was the marvel of its time and, to some, it will always be the noblest of all bridges. Spanning the river to link New York City and New Jersey had challenged planners and engineers for over 100 years before Othmar Ammann, the brilliant, Swiss-born architect and engineer, proposed a bridge design in 1923 that ultimately was chosen above all others. The Port Authority, with Ammann as its new chief engineer, began construction in October of 1927. Ammann's design, bold and foresighted, was an engineering tour de force, with an extraordinary 3, 500-foot center span suspended between two 570-foot steel towers, and the strength to carry two levels of roadway or rail.
The physical construction of the bridge is itself a marvel of engineering. The four main cables are each composed of a single strand carried back and forth across the river 61 times. Each strand-itself a bundle of 434 individual wires-wraps around a strand shoe in the anchorage before looping back toward the opposite shore. Each shoe connects to a bar sunk deep into the anchorage that holds the strand in place.
The two towers were built first. Once the towers were in place, the four main cables, each a yard in diameter, were strung from shore to shore up over the top of each tower. Next, steel suspenders were hung from the main cables, to support the roadway. Finally, the bridgemen built the road itself, foot by foot, out from the shores, hanging it from the steel suspenders as they went.
The New York anchorage, into which the main cables are anchored, consists of 110, 000 cubic yards of concrete weighing 260, 000 tons. On the New Jersey side, the main cables are tied directly into the rock of the Palisades fronting the Hudson River. At the time, this required the excavation of 200, 000 cubic yards of solid rock.
The George Washington Bridge was first opened to traffic in 1931. During the first full year of operation in 1932 more than 5.5 million vehicles used the original six-lane roadway. As traffic demand increased, additional construction became necessary. The two center lanes of the bridge, which had been left unpaved in the original construction, were opened to traffic in 1946, increasing capacity of the bridge by one-third. The six lanes of the lower roadway were completed in 1962.What does mod pizza stand for? How to use a speed square? What are the results of the california recall election? What does prestigious mean? What does otp mean in a text message? What are test tubes? What does ezekiel 37 mean for us today? How to get a passport fast? How to do a burnout? What does jurisdiction mean? What does a high glucose level mean? How to dispose of old paint? what is web helper? What is a youth lyrics meaning? what does it means to be a good helper in counselling How to make lemon zest? What does it mean to be vanilla? What does a point guard do? What does release mean? What is mantra mean? What is the meaning of diss? What does proverbs 17 17 mean? What does ymca mean? How to sear beef tips for slow cooker? How to make moon water? What are dreads? How many didn't meaning? Which of the following tips should be followed in business writing? What is strength training? Tips on how to build a motor on nitrous oxide? What does work compensation mean? What does the cw stand for? How many days after period is safe to avoid pregnancy? How to get on family feud? What is the meaning of gps? How to help an alcoholic? What dose afk mean? What you are seeking is seeking you meaning? How to breastfeed? What is the best way to dye the tips of your hair? What does inconceivable mean? How to deal with grief? What does ot stand for? Why are my adonit pixel tips tearing? What does mahu mean in hawaiian? How to make money on twitch? what is a helper called in construction What does the different color hearts mean? What is the meaning of howl? How to see tips on uber eats? How to train a border collie to do tricks? You make a living by what you get quote meaning? What does wyll mean in texting? Main protagonist who uses clever tricks? What does ? mean on snapchat? What countries are in africa? What does narcissistic mean? What does your sun sign mean? What is the meaning of disposition in legal terms? Where to hit que ball for tricks? When you get scared does your mind play tricks? How to change macbook wallpaper? How to make water elevator in minecraft? What kind of friend are you? How to get a corporate sponsor 9 tips? What does cracker mean? What does till valhalla mean? How up earlier tips becoming person? What time is the eclipse today? How to study for a test? What does 4c hair look like? Tips on how to read a book faster youtube? How to evolve inkay? How to get a divorce? How to make oobleck? What awards are on tonight? 6 tips on how to plan a successful smash the cake photoshoot partify? What are tech tips? What me worry song meaning? How long does it take for broken ribs to heal? What does taliban mean? How to tell if papaya is ripe? how to download youtube videos using savefrom.net helper What channel is tbs? how to use usb helper for dlc How to get undrunk? Why wouldthe tips of your fingers turn black? how hinton helper caused the civil war What do the tips of a phylogenetic tree represent? What does net income mean? What is tbi mean? How to clear phlegm from throat? How to get rid of tricks and treats debuff wow? Tips in how to get pregnant? How can tips becoming morning person? Best tips when visiting mexico? What percentage does ebay take? How to get rid of bagworms? What is the meaning of noodles?