Rainbow Bridge History

Initially, suspension bridges before 1940 were made of piers, towers, wires, anchorages, and roadways. Piers were the main foundation for the suspension bridges. There usually were two of them, which were made out of cement and were entrenched in ground underneath the body of water that the bridge was spanned across. Towers were built on top of the piers to provide a means of connection for the roadways and wires. Wires were connected to the towers, roadways, and anchorages to provide tension support for the weight of the bridge. The anchorages were large cement platforms that were planted into the ground on either side of the land so that the wires could be connected to it. Lastly, the roadways were the main point of the suspension bridge. They usually were wide enough to provide four lanes of traffic and stretched from one side of the bridge to the other. This was the basic design of the suspension bridges

For anyone wondering, there is plenty of park to be explored. It’s not as crowded as it sounds or as crowded as you think it would be. For there is over 384 miles of thinly laced mountain roads that you can drive on. You can pull to the side of the road any time that you want and start walking and exploring the way you want. You’ll never explore the whole park in one day or even one week for there is eight hundred miles of hiking trails, from a half-mile to 70 miles long.

There are many differences between our bridge and other bridges. One being location. Another one being that thing that was sacrificed for it. Another one being cost. Also another difference would be weight and capacity, and the size or length.

Bridges are a vital part of people’s everyday life and without them people would not be able to do nearly as much as is possible today. The weather in the outer banks of North Carolina is very rough and can be very detrimental to the various structures on them. When hurricanes come near North Carolina the outer banks are hit the worst. Bridges on the outer banks keep being destroyed by weather and so the people there have to think about the cost, the effectiveness, and the need between a strong expensive bridge that will be able to handle rough weather or a cheap quick to build bridges that may fall with any extreme weather.

Building a bridge over water is difficult, but building a bridge made of water is nearly impossible. Just over a century ago, a massive water way was constructed in the country that is now called Panama. This canal dramatically reduced shipping time and helped America’s Navy ships move swiftly from sea to sea. The Panama Canal is a spectacular feat in engineering that connects two oceans through fifty miles of land boosting worldwide economy, especially in the shipping industry.

More than two decades before Evergreen Point, in 1940, Washington completed the construction of the Lake Washington Floating Bridge. While shorter, the bridge uses the same design concept that would be used for Evergreen Point, floating pontoons that provide support as opposed to more costly foundations into the deep, soft lakebed of Lake Washington. Later renamed the Lacey V. Murrow Memorial Bridge, Lake Washington’s first floating bridge became part of Interstate 90 under President Dwight D. Eisenhower when the Interstate Highway System was created (FWHA/USDOT, 2013). Like Evergreen Point, this bridge required an upgrade, a new parallel bridge structure in 1989. In contrast to Evergreen Point, the old bridge was never slated for removal; it was repaired and is still in use for one direction of the crossing (WSDOT,

The Memorial Bridge opened in the early 1920’s making it a historical bridge, which at the time of the analysis

The Lift Bridge is a stupendous bridge that gets much attention from tourists. The past, structure, and the visitors all make up what is special about the Lift Bridge. History of the Lift Bridge starts off with the span beginning its life as an extremely rare transporter bridge. It was originally built in 1905. The Lift Bridge was then upgraded in 1929 to a vertical lift bridge, which is rather uncommon to most, and continues to

One thing that was pretty interesting which was captured by the photographer over the course of the construction of this bridge was the complexity of it. The bridge from an aesthetic standpoint looks pretty simple, but based on blueprints and photographs developing it and installing it was very difficult. Knowing how difficult it was to construct this bridge and looking at photographs of its progress adds to how impressive the bridge looks simplistically.

Despite acquiring most of the permits necessary for its completion, the pipeline has faced major opposition from environmental groups and Native American tribes, specifically the Standing Rock Sioux tribe. Standing Rock raises cultural objections and claims that the pipeline would cut directly through sacred ancestral burial grounds. Environmental groups and scientists also oppose the pipeline because the lack

This bridge is a fine example of a town’s great and enduring past being changed, for better or for worse. The Washington Avenue Bridge was built all the way back in 1934, which was exactly 82 years ago. That is probably the reason behind its remodeling, since a bridge that old may be a little unsturdy for people to drive across. Although it took way too long to fix, we can finally say that the bridge are back in

Although many negatives derived from the Tacoma Narrows Bridge, it was an important event in the world of engineering. It allowed for the start of research in wind effects on suspension bridges and potentially prevented the building of many more suspension bridges would could have easily have encountered the same problem. It was the start of a new era into bridge design, making them safer and more economical. The new Tacoma Narrows bridge was built in 1950, with the appropriate changes made and still stands today.

Natural Bridges State Beach is a beach known for its viewing points of shore birds, migrating whales, seals, and otters. Its tide pools, which give a glimpse of colorful ocean life such as sea stars, crabs, and sea anemones, can be explored, and large area of coastal scrub and grasslands bring native wildflowers in the spring. Natural Bridges is named for the naturally occurring mudstone bridges that were carved by the Pacific Ocean into cliffs that bulged out into the sea. They were formed over a million years ago when silt, clay, and diatoms were solidified into a mixture of stone that originally formed three arches on the beach. However, of the three arches, only one remains to this day as the other two collapsed during two different storms.

This bridge was designed in 1844 by father and son Caleb and Thomas Pratt from Boston. Caleb, who was was the father, was an architect and Thomas, who was the son, was an engineer. The Pratt Truss bridge was built after the Truss Design made by William Howe. The reason for creating the bridge was because it was needed a bridge that was strong to carry trains over rivers and because

The Golden Gate Bridge The Golden Gate Bridge is a suspension bridge; it is one of the longest bridges in the world, an influential and graceful human structure in an evenly gorgeous natural site, built between the city of San Francisco on the northern tip of the San Francisco Peninsula and Sausalito on the south-facing Marin County headlands. The construction of the bridge started on January 5, 1933 under the support of the Works Projects Administration (WPA), a program commenced by Franklin Delano Roosevelt to make public works through federal funds and reduce the effects of the Great Depression Construction of the bridge took four and one-half years and the work initiated on January 5, 1933. The resulting duration has been much admired for its size and its graceful beauty. At mid-span the bridge is 220 feet beyond the waters of the Golden Gate; it is almost a mile across and there is merely one pier in the water which, incidentally, was constructed under most disappointing conditions, as Engineer Strauss could give evidence. This pier is only 1,125 feet from shore; the distance between the two towers that hold up the cables which, sequentially, hold up the floor of the bridge, is 4,200 feet. These two cables are 361/2 inches in diameter, the largest bridge cables ever made. Each cable is 7,659 feet long and contains 27,572 parallel wires, sufficient to surround the world more than three times at the equator. Luckily, solid rock was discovered at each end of the Gate and