Hoover Dam on the Colorado River, Arizona-Nevada, U.S., seen from above on the upstream (reservoir) side. A bypass bridge (background) crosses Black Canyon just downstream.. Today, as a result of a drought the Colorado River basin has experienced for the past decade-and-a-half, Lake Mead has dropped to its lowest level since it was first filled in the 1930s. Hoover Dam History. Dam Maro Dam Movie Download. Fireworks on Brooklyn Bridge is an Animated Wallpaper by EleFun Multimedia devoted to the Independence Day of USA Discover the most compact Hoover stick in the range. Light & manoeuvrable with impressive Hoover has teamed up with Chef Simon Rimmer to give you ideas and inspiration to help you cook the way..
Hoover Dam Bridge Creeping closer, 900 above the Colorado River, the two sides of a $160 million Hoover Dam Bridge - PowerPoint PPT Presentation. To view this presentation, you'll need to allow.. This is a model of the Hoover Dam Bypass Bridge Now you can easily and quickly add contacts from your email account (such as Gmail, Hotmail, Yahoo etc.), or just manually add the email addresses you'd like to keep in your contact list.
Infinity Bridge: Facts and Information. Hoover Dam: Facts and Information. Amazon River Dolphin Facts New Hoover Dam BridgeNew Hoover Dam BridgeBetween Nevada and ArizonaBetween Nevada and Arizona. Hoover dam bridge construction by Himanshu Patel 10799 views 1. The dam’s name was a source of controversy. Surveyors originally recommended the dam be constructed at Boulder Canyon, leading the initiative to be called the Boulder Canyon Dam Project. Even when Black Canyon later was deemed a better location for the new structure, it continued to be referred to as the Boulder Dam. However, on September 17, 1930, at a ceremony in Nevada to mark the start of construction on a railroad line to the dam site, U.S. Secretary of the Interior Ray Lyman Wilbur announced the dam would be named for his boss, President Herbert Hoover, who had been inaugurated in 1929. In 1933, Hoover was succeeded in the White House by Franklin Roosevelt, and the new secretary of the interior, Harold Ickes, no fan of Hoover, declared the structure would once again be called Boulder Dam. By that point, the name Herbert Hoover also had taken on negative associations for a number of Americans, who blamed him for the Great Depression.
Hoover Dam is framed in the newly completed by-pass bridge spanning the Colorado River (AP) [PA]. The 1,900ft engineering wonder perched 890ft above the Colorado River is expected to slash travel.. The new Hoover Dam Bypass will include approximately 3.5 miles of new four-lane highway and a 1 The new bridge will span the Black Canyon (about 1,600ft south of the Hoover Dam), connecting the.. Оригинальное название: Hoover Dam Connecting People through News. All-you-can-read digital newsstand with thousands of the world's most popular newspapers and magazines. Vast selection of top stories in full-content format available.. En este vídeo, podemos ver unas imágenes de la construcción del New Hoover Dam Bridge
Hoover Dam, Nevada (1936) It was designed to do the impossible: stop the mighty Colorado River dead in its tracks and provide water and power for the growing cities of Southern California In addition, the Hoover Dam provides low-cost hydroelectric power for Nevada, Arizona, and California. The dam generates more than four billion kilowatt-hours of electricity per year and it is one of the largest hydropower facilities in the U.S. Revenue generated from power sold at Hoover Dam also pays for all of its operating and maintenance costs.Hoover Dam is also a major tourist destination as it is located only 30 miles (48 km) from Las Vegas and is along U.S. Highway 93. Since its construction, tourism was taken into consideration at the dam and all visitor facilities were built with the best materials available at the time. However, due to security concerns after the September 11, 2001, terrorist attacks, concerns about vehicle traffic on the dam initiated the Hoover Dam Bypass project completed in 2010. The Bypass consists of a bridge and no through traffic will be allowed across. The Hoover Dam Bypass is definitely a sight to behold. 3. Bus tours include guided tour of the Hoover Dam (plus the turbine room), and then a helicopter flyover of the bridge
The most spectacular bridge, the Seven Mile Bridge in the Lower Keys, has been frequently used I have been very lucky to visit Vegas, and to have flown over the Hoover Dam and the Grand Canyon new hoover dam bridge ibrahim baykan pps ppt. Tags: Baykan , Bridge , Dam , Hoover , Ibrahim Hoover Dam Bridge technical information. Designer : T. Y. Lin International () 1988 finished the Hoover Dam was built after 1930 Great Depression, it was a project to increased job for American.. .C. For 41 years between 1931 and 1972 the Empire State.. Hoover Dam is 726 feet (221 metres) high and 1,244 feet (379 metres) long at the crest. It contains 4,400,000 cubic yards (3,360,000 cubic metres) of concrete. Four reinforced-concrete intake towers located above the dam divert water from the reservoir into huge steel pipes called penstocks. The water, after falling some 500 feet (150 metres) through the pipes to a hydroelectric power plant in the base of the dam, turns 17 Francis-type vertical hydraulic turbines, which rotate a series of electric generators that have a total power capacity of 2,080 megawatts. Nearly half of the generated electric power goes to the Metropolitan Water District of Southern California, the city of Los Angeles, and other destinations in southern California; the rest goes to Nevada and Arizona. The dam, power plant, and reservoir are owned and managed by the U.S. Department of the Interior’s Bureau of Reclamation.
, New York's Triborough Bridge, and the Other Depression-era public works include La Guardia Airport, the Lincoln Tunnel, and Hoover Dam Часть 2 поездки по западу США — дамба Гувера и пустыня Мохаве Take a cruise on San Francisco Bay, tour Alcatraz, drive over the Golden Gate Bridge, wander around Fisherman's Wharf, or hop on a street car to explore the city sites
In the ensuing years, Hoover Dam and Boulder Dam were used “interchangeably, the preference often depending on the political leanings of the speaker,” according to Michael Hiltzik, author of “Colossus: Hoover Dam and the Making of the American Century.” Finally, in April 1947, President Harry Truman approved a congressional resolution that officially confirmed the dam would carry Hoover’s name. .15.14, reviewjournal.com , Man dies in jump from Hoover Dam Bypass Bridge, By ANNALISE.. May also interest you: 4:28 This LEGO House Is a Child's Dream Turned Into Reality
Examples: the Golden Gate Bridge the Grand Canyon a Russian song a Shakespearean sonnet a Freudian slip. Natural and manmade landmarks Mount Everest, the Hoover Dam When two of the tunnels were finished, excavated rock and gravel were dumped into the river to form a temporary coffer dam, which began diverting the Colorado’s flow into those tunnels on November 14, 1932. Permanent coffer dams were then built, one upstream (98 feet high and 510 feet long) and one downstream (66 feet high and 350 feet long). The “construction stiffs,” as Fortune magazine referred to the workers, now were free to attack the canyon walls. Making an average 68 cents an hour, they were lowered over the canyon rim in safety belts or bosun chairs, then used steel bars to knock down any and all loose material, and 44-pound jackhammers to drill powder holes. By the summer of 1933, so many “high scalers,” as they were known, had been killed by rock slides and falling objects that the men took to making improvised hard hats by coating their cloth hats with coal tar, which proved extremely effective.With water diverted and the river bed dry, excavation began for the dam, the powerplants that sit at its toe, and the twin set of graceful intake towers, which stand prominently on the reservoir side of the dam. Using huge power shovels, men labored in shifts, 24 hours a day, removing mud, silt, and rock to reach solid bedrock. Abutments had to be shaped properly and cuts made in the canyon walls to ensure the dam could carry the forthcoming load of more than 41 billion tons. Category:Hoover Dam. From Wikimedia Commons, the free media repository. (ta); diga di Hoover (it); Hooveri pais (et); Hoover Dam (nl); Represa Hoover (pt); 胡佛水坝 (zh-hans); Hooverdammen..
New bridge and bypass highway at Hoover Dam. The Mike O'Callaghan-Pat Tillman Memorial Bridge is an arch bridge in the United States that spans the Colorado River between the states of Arizona.. ..as the Hoover Dam Bypass Bridge, was the first concrete-steel composite arch bridge built in the side of the bridge, is spectacular for viewing and photographing the magnificence of the Hoover Dam.. Like Life, Travel and Places can be an exhilarating. Expect a few hiccups along the way but don't let that derail your adventure Building Hoover Dam was a monumental undertaking. Construction required 5 million barrels of cement and 45 million pounds of reinforcement steel. The mass of concrete used weighed 6.6 million tons and would pave a road stretching from San Francisco to New York City. Hoover Dam’s spillways could float a battleship, and Lake Mead, when filled to capacity, contains enough water to cover Connecticut 10 feet deep. It would take a maximum of 5,218 men (employed in any one month) a total of five years to build the dam, which actually was completed ahead of schedule. The construction contract went to a combination of six prominent contracting firms that pooled their resources and incorporated as Six Companies Inc. of San Francisco, for the express purpose of building Hoover Dam. Six Companies’ low bid of nearly $49 million, awarded on March 11, 1931, was the largest construction contract let by the U.S. government up to that time. Housing and feeding workers was a huge task, as well. The government designed and built the still thriving Boulder City, six miles from the dam site. A state-of-the-art hospital anticipated the many injuries to come (the official death toll is 96 men), while a fully stocked department store, recreation hall, laundry, and amenities from a school to a post office rounded out the town. Married men and their families lived in 758 cottages, while single men lived in one of nine dormitories. The men paid $1.60 a day for room and board at the domitories, but they received a private room, transportation to and from the construction site, and all-they-could-eat meals. Beef, veal, lamb, and pork came in 20,000-pound lots shipped from Reno. With no dairies in southern Nevada, Boulder City’s food contractor purchased a 160-acre farm at Mesquite, Nevada, where 200 cows provided fresh milk, cream, and butter. Less wholesome was the road to Vegas, where bars and brothels sprang up miles before the workers with pay in their pockets could make it to what in the 1930s was a Las Vegas of only 5,000 people. While gambling had existed illegally there for years, the town secured a legal thumbs up from the Nevada Legislature in 1931, the same year construction began on Hoover Dam. While gambling was legal, drinking was not. In Boulder City, officers seized eight stills and arrested 72 people before Prohibition was repealed in early 1933.
When you climb up to this dam which is 726.4 ft tall, you can do a simple experiment. Try to pour some water out of a bottle. The liquid won't flow down as usual, but it will fly up With the official opening of the Hoover Dam Bypass Bridge (Mike O'Callaghan - Pat Tillman Memorial Bridge) in October 2010, vehicles travelling on U.S. Highway 93 no longer cross Hoover Dam Today, Hoover Dam is used as a means of flood control on the lower Colorado River. Storage and delivery of the river's waters from Lake Mead is also an integral part of the dam's usage in that it provides reliable water for irrigation in both the U.S. and Mexico as well as municipal water uses in areas like Las Vegas, Los Angeles, and Phoenix.
2. An entire city was created for people working on the dam. In the early 1930s, Boulder City, Nevada, was constructed to house 5,000 dam project workers. Before the city was built, many jobless men and their families who’d converged on the dam site, hoping to find employment in the midst of the Great Depression, had lived in squatters’ settlements. Boulder City was situated on federally owned land and had no elected officials. The city was run by an employee of the U.S. Bureau of Reclamation (the agency responsible for the dam project), who had the authority to evict residents as he saw fit. Among the local rules, alcohol and gambling were banned. The Boulder Dam Hotel was erected to host dignitaries coming to see the dam’s construction; famous figures from Bette Davis to the future Pope Pius XII visited in the 1930s. After nearly 30 years, the federal government relinquished control of Boulder City, which was incorporated in 1960.Visit the National Park Service Travel Bureau of Reclamation's Historic Water Projects to learn more about dams and powerplants. Early engineers built walls, roads, bridges, dams and levees; they dug wells, irrigation ditches and trenches. As larger groups of people began living together in towns and cities, these populations.. Americans have had 80 years to celebrate Hoover Dam's high-rolling hydroelectric chutzpah. But the lesser-known O'Callaghan-Tillman Bridge is a new player at the public works poker table
Hoover Dam Bypass Bridge: highest and longest arched concrete bridge in the western hemisphere. Second highest bridge in the US and 14th in the world. World's tallest concrete columns Hoover Dam in Nevada. Other Attractions worth visiting are Grand Canyon, Golden Gate Bridge, Yellowstone National Park, Statue of Liberty, Central Park, National 9/11 Memorial & Museum, The.. Costs at Hoover Dam 30 minute Powerplant Tour - $15 for adults, $12 for seniors and $12 for kids 4-16 1 hour Hoover Dam Tour - $30 for everyone; kids 8 and under not allowed The Pat Tilman walking bridge is a must see! It's a terrific new bridge. As someone with a great..
Download this free picture about Hoover Dam Bridge from Pixabay's vast library of public domain images and videos Hoover Dam is named in honour of Herbert Hoover, the U.S. president during whose administration (1929–33) construction began on the dam and whose work as commerce secretary in the 1920s secured agreements necessary for the project to proceed. Erected during the Great Depression, the dam was a major endeavour that employed thousands of workers; around 100 fatalities occurred during its construction. Although legislation passed by Congress in 1931 officially named the dam for Hoover, officials in the succeeding administrations of Franklin D. Roosevelt and Harry S. Truman referred to it as Boulder Dam, its name during the planning stages before construction. In 1947 Truman signed a congressional resolution restoring the structure’s formal name to official use. Детектив Нэш Бриджес (сериал, 1996 - 2001) Nash Bridges Hoover Dam Guard (в титрах: Jesse Johnson) 13- Bridge of Sighs in Venice, Italy. Sighs Köprüsü, Venedik, İtalya. 14- Hoover Dam Bypass, Nevada, ABD
Hoover Dam, formerly called Boulder Dam, dam in Black Canyon on the Colorado River, at the Arizona-Nevada border, U.S. Constructed between 1930 and 1936, it is the highest concrete arch dam in the United States. It impounds Lake Mead, which extends for 115 miles (185 km) upstream and is one of the largest artificial lakes in the world. The dam is used for flood and silt control, hydroelectric power, agricultural irrigation, and domestic water supply. It is also a major sightseeing destination, with some seven million visitors a year, almost one million of whom go on tours through the dam.Hoover Dam is a large arch-gravity dam located on the border of the states of Nevada and Arizona on the Colorado River in its Black Canyon. It was constructed between 1931 and 1936 and today it provides power for various utilities in Nevada, Arizona, and California. It also provides flood protection for numerous areas downstream and it is a major tourist attraction as it is close to Las Vegas and it forms the popular Lake Mead reservoir.• The Hoover Dam was built after the 1930 Great Depression, the project was meant to provide jobs for thousands of unemployed Americans • Dam type: Concrete gravity-arch dam • Top width: 45 ft. (14 m), Base width: 660 ft. (200 m) • Height: 726 ft. (230 m), Length: 1245 ft. (380 m) • Construction began in 1931 and ended in 1936 • Cost: $49 million • Reservoir: 28,537,000 Acre ft. (35,200 Kilo cubic meter) • Power annual generation: 4.2 Billion kWh • Hoover Dam is a popular tourist site – annually visited by more than a million people
Millau Bridge Мегамосты. Самый длинный мост в Мире / Megabridges. The World's Longest Bridge Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. It was constructed between 1931 and 1936 during..
You may know that the Three Gorges Dam slowed down the earth, but what else do you know about The Three Gorges Dam is one of the most ambitious and equally controversial projects on the planet ..Memorial Bridge [at Hoover Dam] in the hope that they will deter future tragic occurrences, said the It's certainly not the first self-inflicted death at the Hoover Dam; in fact, Papayoti is the seventh.. Find the perfect hoover dam bridge stock photo. Huge collection, amazing choice, 100+ million high quality, affordable RF and RM images. No need to register, buy now The Brooklyn Bridge was originally envisioned by John Roebling, who had built suspension bridges of shorter spans across the Ohio River and at other locations. The project in Brooklyn and Manhattan led..
Hoover Dam represents an engineering feat that some believed couldn't happen. Its construction required resources and techniques that had never been tried before. For example, setting concrete.. 3. Hoover Dam created America’s largest reservoir. Formed by the damning of the Colorado River, Lake Mead, the nation’s largest reservoir, covers about 248 square miles and is capable of holding some 28.9 million acre-feet of water (an acre-foot is equivalent to about 325,000 gallons). The creation of Lake Mead (named for Elwood Mead, commissioner of the U.S. Bureau of Reclamation when the dam was being planned and built) flooded the community of St. Thomas, Nevada, and turned it into a ghost town. The last resident of the town, which was settled by Mormon pioneers in 1865, rowed away from his home in 1938. Today, the reservoir supplies water to farms, businesses and millions of people in Nevada, Arizona, California and Mexico. Lake Mead also is a popular site for boating, fishing and swimming; America’s first national recreation area was established there in 1964.After the dam was authorized, thousands of workers came to southern Nevada to work on the dam. Las Vegas grew considerably and Six Companies Inc. built Boulder City, Nevada to house the workers. The requested URL was rejected. Please consult with your administrator. Your support ID is: 5422140982768983497 Opened in 2010, it was the key component of the Hoover Dam Bypass project, which rerouted US 93 from its previous routing along the top of Hoover Dam and removed several hairpin turns and blind curves from the route.
Dam. Raises the water level of the river to create falling water. Maybe the dam is used to provide water to irrigate farmlands or maybe it was built to make a lake for recreation Hoover Dam Bermuda Triangle Leaning Tower Of Pisa Arc De Triomphe Golden Gate Bridge The Renaissance is a period from the 14th to the 17th century, considered the bridge between the Middle..
Hoover Dam’s power plant was the world’s largest hydroelectric station from 1939 to 1949. It has an installed capacity of 2,080 megawatts (MW) and currently generates around 4 billion kilowatt-hours (kWh) of hydroelectric power annually, for homes and business in Nevada, Arizona and California. China’s Three Gorges Dam, which started generating electricity in 2003 and became fully functional nine years later, is considered the planet’s largest hydroelectric dam, with a capacity of 22,500 megawatts. In 2014, Three Gorges broke the global record for annual hydroelectric power production, generating 98.8 billion KWh of electricity. The biggest hydropower producer in the U.S., Washington State’s Grand Coulee Dam, completed in 1941 (a third power station was added in 1974), has a capacity of 6,809 MW and generates about 21 billion kWh of electricity each year. BOULDER CITY, Nv. (WHSV) — UPDATE (4:35 p.m. EST): The suspect police said had blocked traffic on the Hoover Dam bridge with an armored vehicle has been taken into custody From the time of the dam’s construction, a federal highway traversed the dam’s crest, serving both visitors to the dam and travelers between Nevada and Arizona. As the dam and surrounding Lake Mead recreation area rose in popularity, traffic increased; traffic problems became especially severe under the security restrictions imposed after the attacks of September 11, 2001. Construction began in January 2005 on a long-planned Hoover Dam Bypass Project, and in October 2010 a concrete arch bridge with a 1,060-foot (322-metre) span—the longest in North America for that type of bridge—opened for through traffic within view of Hoover Dam. The old road along the crest is reserved for use by visitors to the dam. Itaipu Dam. Panama Canal. The Seven Wonders of the Industrial World. Brooklyn Bridge. First Transcontinental Railroad. Hoover Dam. London Sewerage System Young Woman on Rialto Bridge in Venice, Italy. Driving Over The Golden Gate Bridge in Sunset. More images like this. Bridesmaid with Blue Dress
CableCrane - Hoover Dam bridge. Konstruktion und Bereitstellung des Laufwerks mit Haken und slack carrier für die beiden oszillierenden Seilkräne zur Errichtung der Umfahrungsbrücke des.. Pat Tillman – (Born Nov. 6, 1976) A famous NFL football player from Arizona, he gave up his well-paid job and joined the army. He was killed by friendly fire in Afghanistan on April 22, 2004. Hi I'm coming to AU this year. Is anyone going on a vist to the Wes Pollnow Hoover Dam Bridge I would love to come along. Dave Growcott | Hoover Dam was built during the Great Depression, beginning in 1931 and ending in1936. Hoover Dam is located on the border of Nevada and Arizona in the United States, in the Black Canyon of the..
The term I like is the Hoover Dam Bypass Bridge, which I Now, you indeed can enjoy fantastic views of the Dam from the bridge, and you can enjoy Hoover Dam with little or no traffic and very few.. Gobi has increased DAM and much higher Crit DAM over the Sniper Rifle; * That Gun - That Gun is They will still turn hostile if you shoot them too much though; * Two vending machines in Hoover Dam..
Hoover Dam. China Faces Problems With Drinking Water. engineer = person who plans and makes roads, bridges etc.. environment = the world around us A man who was reportedly armed blocked traffic going both ways on the Hoover Dam near Las Vegas, eventually getting arrested on the Arizona side, the This is what is looks like near the Hoover Dam
The Hoover Dam Bypass Bridge was completed in 2010. It spans the Colorado River from Arizona to Nevada The bridge crosses the river approximately 1,500 feet (460 m) downstream of Hoover Dam Mike O'Callaghan – (Sept. 10, 1929 – Mar. 5, 2004) Joined the Marines at sixteen, in 1952 he lost part of his left leg in the battle of Korean War, from 1971 to 1979 he was Governor of Nevada, later he was the Executive Editor at the Las Vegas Sun newspaper.Hoover Dam was officially dedicated as Boulder Dam on September 30, 1935. President Franklin D. Roosevelt was present and most of the work on the dam (with the exception of the powerhouse) was completed at the time. Congress then renamed the dam Hoover Dam after President Herbert Hoover in 1947.As early as 1901, manmade canals diverted Colorado River water to the Imperial Valley’s fruit and vegetable fields. But the Colorado was a mighty river, gouging rock mesas as it went, including the most famous gorge of all--the Grand Canyon. The Colorado could grow angry, swelling to a torrent, flooding land for miles around, clogging irrigation canals with sediment, and washing away small earth dams. In 1905, the Colorado broke out of its banks at an irrigation canal head works and ran wild for months, sending its entire flow into the Salton Sink--creating the Salton Sea. As the Colorado destroyed homes and crops, and damaged highways and railroads, its name turned to mud, much like the landscape it destroyed.To engineers at the U.S. Bureau of Reclamation, the solution was clear: a large, multipurpose dam that not only would control floods, but harness the Colorado for irrigation and hydroelectric power. Years of debate followed as opponents questioned the economic feasibility and engineering know-how for such an enormous project. Furthermore, six of the seven states in the Colorado River drainage area (Colorado, Wyoming, Utah, New Mexico, Arizona, and Nevada) expressed fears that California would get the lion’s share of the water. Then-Secretary of Commerce Herbert Hoover stepped up as the man of the hour when he oversaw a compromise in 1922 that became the Colorado River Compact. This compact divided the seven states into the Upper and Lower Basins, established a set amount of river water to be consumed annually, and left the apportionment percentages for the states to work out among themselves.On December 21, 1928, President Calvin Coolidge signed an act authorizing the Boulder Canyon Project, so named because a study originally had recommended the Boulder Canyon of the Colorado, not the nearby Black Canyon, as the site of the dam. On July 3, 1930, then-President Herbert Hoover signed the first appropriation bill. It was during dedication ceremonies on September 17, 1930, that Secretary of the Interior Ray L. Wilbur, while driving a silver spike for the railroad spur that would run to the construction site, announced that the name of the colossal structure was to be Hoover Dam. However, the soon-to-be-elected Democratic administration of Franklin Roosevelt continued to use the name Boulder Dam. It wasn’t until April 30, 1947, that a resolution of Congress made Hoover Dam the official name.
..bridge at the Hoover Dam slowly takes shape The bridge will carry a new section of US Route 93 past the bottleneck of the old road which can be seen twisting & winding around & across the dam Buildings and bridges are often the first structures to come to mind, because they are the most obvious engineering creations. But civil engineers are also responsible for less visible creations and..
A four-year-long legal spat over Hoover Dam Bridge project's collapsed cableways has come to a close with a private settlement stemming from an April 20 arbitration ruling Once the Colorado River was diverted, two cofferdams were constructed to prevent flooding in the area where men would be building the dam. Once completed, excavation for the foundation of Hoover Dam and the installation of columns for the arch structure of the dam began. The first concrete for Hoover Dam was then poured on June 6, 1933 in a series of sections so that it would be allowed to dry and cure properly (if it had been poured all at once, heating and cooling during day and night would have caused the concrete to cure unevenly and take 125 years to cool completely). This process took until May 29, 1935, to complete and it used 3.25 million cubic yards (2.48 million m3) of concrete. Hoover Dam is a concrete gravity-arch dam in the Black Canyon of the Colorado River, on the border between Arizona and Nevada. The dam, located 48 kilometers (30 miles) southeast of Las Vegas, is named after Herbert Hoover, who played an instrumental role in its construction Vacuum cleaners from Hoover featuring the best new and reconditioned models, including powerful upright Genuine Hoover parts, filters, and vacuum cleaner accessories shipped direct to you The Hoover Dam is one of the greatest marvels of architecture in the modern era. Even with relatively modern construction equipment, this massive structure took 14 years to build, and cost $700 million..