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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.
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.
A lightweight box crib Hardwood railway sleepers used as a box crib, North Australian Railway, 1975 Bailey Island Bridge, Harpswell, Maine. The only granite cribstone bridge in the world. A box crib or cribbing is a temporary wooden structure used to support heavy objects during construction, relocation, vehicle extrication and urban search and ...
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 Bridge to Nowhere is an arch bridge that was built in 1936 north of Azusa, California, United States in the San Gabriel Mountains. It spans the East Fork of the San Gabriel River and was meant to be part of a road connecting the San Gabriel Valley with Wrightwood, California .
The world's longest beam bridge is Lake Pontchartrain Causeway in southern Louisiana in the United States, at 23.83 miles (38.35 km), with individual spans of 56 feet (17 m). [28] Beam bridges are the simplest and oldest type of bridge in use today, [29] and are a popular type. [30] Truss bridge
Attempts have been made to increase the safety of bridges with pin and hanger assemblies by adding some form of redundancy to the assembly. Retrofits that add redundancy to pin and hanger assemblies include adding a "catcher's mitt"—a short steel beam attached to the bottom of the cantilevered girder that extends out beneath the suspended girder to "catch" the suspended girder should ...