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A viaduct is a specific type of bridge that consists of a series of arches, piers or columns supporting a long elevated railway or road. Typically a viaduct connects two points of roughly equal elevation, allowing direct overpass across a wide valley, road, river, or other low-lying terrain features and obstacles.
The Selvatura Adventure Park, or Monteverde Nature Center, Sloth habitat and Butterfly Gardens is a nature center in Monteverde, northwestern Puntarenas Province, Costa Rica. It is located in the Cordillera de Tilarán mountain range, close to the village of Santa Elena .
A plank road is a road composed of wooden planks or puncheon logs, which were commonly found in the Canadian province of Ontario as well as the Northeast and Midwest of the United States in the first half of the 19th century. They were often built by turnpike companies. The Plank Road Boom was an economic boom that happened in the United States.
The United States government had funded and constructed improvements along its coastline beginning with the founding of the United States Army Corps of Engineers during the revolution, and many politicians wanted them to contribute to construction of works "of a civil nature" as well. Before 1800, the Corps supervised the construction of ...
The largest masonry bridge in the United States is the James J. Hill Bridge over the Mississippi River, built in 1883 by railroad magnate James J. Hill, who wanted to impress his fellow citizens by building a structure that would honor him. It is 752.5 meters long and has 23 limestone arches with a full arch span of 23.49 meters.
Even though the original bridge was replaced in the 2000s, the new bridge also has a draw span, albeit with more vertical clearance resulting in fewer openings than the old bridge—about 65 per year, an average of about one every six days. I-695 has a drawbridge over Curtis Creek, south of Baltimore and just west of the Francis Scott Key ...
Internal improvements is the term used historically in the United States for public works from the end of the American Revolution through much of the 19th century, mainly for the creation of a transportation infrastructure: roads, turnpikes, canals, harbors and navigation improvements. [1]
An example of a Fink truss bridge It is identified by the presence of multiple diagonal members projecting down from the top of the end posts at a variety of angles. These diagonal members extend to the bottom of each of the vertical members of the truss with the longest diagonal extending to the center vertical member. [ 4 ]