Suspension bridges were important before 1940 and are still important today. Major cities such as San Francisco, and Manhattan both have a suspension bridge. Suspension bridges are,” a bridge having a deck suspended from cables anchored at their extremities and usually raised on towers” (dictionary.com). Due to the fact that suspension bridges are not completely supported throughout the length of the bridge, past bridges were unsafe. For example, the Tacoma Narrows Bridge was a suspension bridge opened on July 1st, 1940 (Mark Ketchum). This bridge marked a huge point in suspension bridge safety and engineering, because in collapsed approximately four months after it was opened (Parsons). The collapse caused such a shock, that suspension bridges had to be re-evaluated and re-designed to be safer. Currently, suspension bridges are safe because the collapse of the Tacoma Bridge.
On December 29, 1876, a train was crossing over a railroad bridge spanning the Ashtabula River when the entire bridge collapsed, sending most of the train into the frigid water below. This disaster would be the deadliest bridge disaster in the United States. Investigators quickly tried to determine why this bridge, after eleven years of service, collapsed. The investigators would ultimately place the blame on the president of the Ashtabula Railroad Company, Amasa Stone. The bridge was constructed with many flaws, both known and unknown. This disaster would lead to people realizing the need for structural standards for bridges and qualified engineers.
In the early 1900's, settlers of the San Francisco Bay Area considered the San Francisco-Oakland Bay Bridge, which spans over eight miles long and 500 feet above the water at its highest point, an impossible feat. However, with only a few complications, the bridge was completed by November, 1936. The San Francisco-Oakland Bay Bridge consists of two bridge types. The east section is a cantilever bridge, and the west, a suspension bridge.
In 2009, Some problems about infrastructure arisen in the United States. It has been called “one of the most decrepit and potentially dangerous bridge” . The engineers reported that the claims about the bridge are true. The bridge did not planed with long-term durability. So, this situation cause new plans to repair bridge or construct a new bridge or tunnel.
According to Suspension bridges: Concepts and various innovative techniques of structural evaluation, “During the past 200 years, suspension bridges have been at the forefront in all aspects of structural engineering” (“Suspension”). This statement shows that suspension bridges have been used for over 200 years, and that people are still using them today because they are structurally better bridges. This paper shows four arguments on the advantages of suspension bridges, and why you should use one when building a bridge. When deciding on building a suspension bridge, it has many advantages such as; its lightness, ability to span over a long distance, easy construction, cost effective, easy to maintain, less risk
At the time of its construction in 1929, the Ambassador Bridge was the largest spanned suspension bridge at 564 meters until the George Washington Bridge was built. It was an engineering masterpiece at the time. The total bridge length is 2,286 meters and rises to 118 meters above the river. Suspension cables support the main span of the Ambassador Bridge and the main pillars under the bridge are supported by steel in a cantilever truss structure. In total, the McClintic-Marshall masterpiece is comprised of 21,000 tons of steel. The immense socio-economical impact that the Ambassador Bridge has on transportation and trade is imperative for daily interaction between the Un...
Over the East River in New York City stands the Brooklyn Bridge, connecting the Brooklyn and Manhattan boroughs. From end to end, the bridge spans 6,016 feet and weighs a heavy 14,680 tons. Ever since construction on the Brooklyn Bridge was completed in 1883, the bridge has offered a safe route with scenic views to tens of thousands of tourists and commuters who have traveled it via train, car, pushcart, and bicycle. The history behind the Brooklyn Bridge is definitely intriguing as well as important because many fatalities occurred in the construction process, including one which occurred before construction on the bridge even started. Also, a lot of workers, time and money were used in building the bridge. In addition,
Construction of The Peace Bridge in Buffalo New York
What can construction do for an area? The construction of an office building may bring in a firm, corporation, or company. The construction of a sporting arena may keep a team where it currently is, or bring a new team to that area. For example, the construction of the HSBC Arena kept the Sabres in Buffalo. The construction of a casino may bring in tourists, or people who live in the outlying suburbs.
Structural Steel Bridge was master piece of engineer James Buchanan in 1874 across the Mississippi river. This type of construction was something unseen
It's been amazing driving above the East River which connects the boroughs of Manhattan and Brooklyn in New York City. Of course, it is Brooklyn Bridge. It is beautiful to visit in the day but looks more beautiful and glamorous at night. Brooklyn Bridge is one of the oldest bridges in the United States which attracts the visitor's attraction. This a big achievement for the USA which completed early in 1883 after 14 years of hard work. The biggest thing is, it is the first steel-wire suspension bridge. It's a safe passage for millions of travelers, tourists, trains, cars, bicycles, and other transportations. For its outstanding historical significance, in 1964, it was designated a National Historic Landmark and a National Historic Civil Engineering