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Courtesy Wikipedia/Charvex
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The park system encouraged planned land use, raised real estate values, and provided incentives for quality residential developments.
Era_date_from:
1915
1974
The tower was designed to rest on a continuous reinforced concrete mat, 4 feet thick, with the base of the slab 24 feet below street level.
What makes the Texas Commerce Bank Building revolutionary in the civil engineering world is not so much the building itself, but its foundation. Initial studies for the type of foundation to be used began in the fall of 1927. William E. Simpson, the building's chief structural engineer, suggested using a mat foundation, something new for Houston's multistory buildings.
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Courtesy Wikipedia/Reagan Rothenberger
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The Texas Commerce Bank Building, now called the JP Morgan Chase Building, had a reinforced concrete mat foundation that was revolutionary at the time.
Era_date_from:
1929
1997
In the years following the Civil War, the land west of the Mississippi River was being settled and the Pacific Northwest explored. There remained, however, a large portion of Montana, Idaho, and Washington that contained enormous quantities of timber and minerals, but was not accessible by rail. By far the most grueling stretch was the Stevens Pass area in the Cascade Mountains.
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Courtesy Wikipedia/Seattleretro
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Railroad development in Stevens Pass made accessible a timber and mineral rich region of Montana, Idaho, and Washington.
Era_date_from:
1900
1993
San Antonio's River Walk, a catalyst for abundant commercial and tourism enterprise, is generally regarded by cities and urban planners throughout the world as a prototype for the development of urban riverfront sites. The River Walk's success, however, would not have been possible without a series of flood-control and architecture projects completed in the first half of the 20th century that relied heavily on civil-engineering expertise.
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Image Credit:
Courtesy Flickr/Tim Pearce (CC BY 2.0)
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San antonio texas river walk 2011 riverwalk
Era_date_from:
1929
1996
After more than 50 years of contention and debate, dredging began in 1911 on an eight-mile channel connecting Puget Sound, Seattle's gateway to the Pacific, to two inland freshwater lakes, Lake Washington and Lake Union. With the completion of the Lake Washington ship channel and Chittenden locks, coal and logs from the interior had a dedicated water route to the ocean, and the city's 4 1/2 miles of coastal harbor burgeoned into 100 miles of commercial, industrial and recreational piers and wharves.
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Courtesy Flickr/gb_packards (CC BY-ND 2.0)
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Lake Washington ship channel and Chittenden locks allowed for the transport of coal and logs and revitalized the coastal harbor.
Era_date_from:
1917
1997
"May God continue the unity of our Country as this Railroad unites the two great Oceans of the world."
- Inscription on the ceremonial Golden Spike
The symbolic Golden Spike, staked in Promontory, Utah in 1869, marked the completion of the first transcontinental railroad, joining the Union Pacific Railroad from the East and the Central Pacific Railroad from the west.
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Courtesy of the National Park Service
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A crowd of 1,500 assembled in Promontory for the ceremony to join the rails and, symbolically, the nation.
Era_date_from:
1869
This bridge is recognized as the first iron bridge in the world. This rural region of England was an important industrial area thanks to coal deposits near the surface. In 1776 the nearest bridge that enabled people and goods to pass over the River Severn was two miles away at Buildwas. There was a ferry crossing, but the trip was difficult and dangerous especially in winter. In 1776, an Act to build a bridge to remedy this situation received Royal Assent.
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Image Credit:
Courtesy Wikipedia/Jasonjsmith
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This bridge is recognized as the first iron bridge in the world.
Era_date_from:
1779
The Watervliet arsenal complex originally was built to house and manufacture weapons for the War of 1812. During the Civil War, it specialized in gun cartridges and artillery carriages. The facility today is a primary site for making state-of-the-art tank cannon, howitzers, mortars, and recoilless rifles.
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Image Credit:
Courtesy Wikipedia/US Army
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The 1859 cast iron storehouse at the U.S. Army's Watervliet Arsenal is a unique example of early prefabricated construction technology.
Era_date_from:
1859
William Emory was an 1831 graduate of the U.S. Military Academy at West Point. When the Mexican War broke out, he was assigned as chief engineer officer to General Stephen Kearny, whose army traversed largely unknown territories in the West. The U.S. War Department would later print 10,000 copies of Emory's Notes of a Military Reconnaissance, which made a significant contribution to understanding the geography and topography of the Southwest.
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The easternmost boundary marker along the Mexico–United States border, just west of the Rio Grande. The photograph is taken from the northeastern corner, in the United States. The northern side of the obelisk contains a plaque in English; the eastern side of the obelisks contains a plaque in English and Spanish; the southern side of the obelisk presumably contains a plaque in Spanish.
Era_date_from:
1855
This is the oldest and most extensive use of terraces in the world. The 20,000 hectares of terraces represent a rearrangement of the Cordillera Mountain Range from bedrock to topsoil. The engineering principles of hydrology, sustainable development, and efficient use of water resources and irrigation are all embodied in the careful design of this ancestral land management program.
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Image Credit:
Courtesy Wikipedia/Agricmarketing
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Using only the simplest tools, the first inhabitants of Ifugao began the construction of 20,000 hectares of the oldest and most extensively used terraces.
Era_date_from:
BC 100
For more than 174 years, the Canton Viaduct has stood as a dominating structure on the New England landscape. When completed in 1835, the slightly curved, granite masonry bridge - 615 feet long, 70 feet high, and 22 feet wide - carried a single track of the Boston and Providence Railroad,…
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The Old Cape Henry Light house was the first construction project authorized by the First Congress. Constructed by John McComb, Jr. of New York City, this project set the stage for all subsequent public works projects of the Federal Government. In addition, this specific lighthouse was a vital…
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The idea of a canal eliminating the costly and dangerous sea trip around the Massachusetts peninsula of Cape Cod was envisioned as early as 1623 by Pilgrim leader Miles Standish. It was not until financier August Belmont became involved in 1906, however, that sufficient funds for the project…
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The Atlantic Ocean's northward-flowing Gulf Stream meets the southward-flowing Labrador Current at a point marked approximately by North Carolina's Outer Banks. Since the earliest days of United States commerce, shifting tides, inclement weather, treacherous shoals, and a low-lying shoreline…
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The fort was constructed of coquina rock. Unique to Florida, the rock consists of millions of seashells cemented together. It proved highly durable and easily absorbed the force of many cannon balls.
The Castillo de San Marcos was the first permanent European settlement in the…
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In 1894, Catawba County, North Carolina commissioners asked local landowners to build and maintain an 85-foot-long bridge across Lyles Creek. The community hired Andy L. Ramsour, who served as keeper of the Horseford covered bridge over the Catawba River in Hickory, North Carolina.
…
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Requests for public power in Seattle began in the late 1890s and lead to the voter approval for building the Cedar Falls Water Supply hydroelectric dam plant in 1902. The first municipally developed and owned hydroelectric plant in the United States began operation in October 1904. The facility…
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Clarifying the turbid waters of the Mississippi River for use as drinking water was a formidable challenge. The Chain of Rocks Water Purification Plant provided the first application of a system of flocculation, sedimentation, and rapid sand filtration for water purification.
The system…
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The Carrollton Viaduct over Gwynn's Falls was the first masonry railroad viaduct constructed in the United States. This structure proved the feasibility of using a viaduct to transport railway vehicles across wide and deep valleys.
The concept for the viaduct came from international…
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The Cheesman Dam was the first major dam in the U.S. to incorporate the gravity arch, and upon completion it was the highest gravity arch stone masonry dam in the world. It is the key structure in Denver's water supply.
Three years into original construction, flooding swept away the…
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The Chesapeake & Delaware Canal is the only canal built in 19th-century America that still operates today as a major shipping route. Connecting the Port of Baltimore and Upper Chesapeake Bay with the mouth of the Delaware River and the Port of Philadelphia, the canal was one of the first…
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The Choate Bridge of Essex County, completed in 1764, is the oldest documented two-span masonry arch bridge in the United States. Named after Colonel John Choate, who supervised the construction, the bridge is located on South Main Street and spans the Ipswich River. Originally, the bridge…
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Constructed on 1,040 acres just 10 miles southwest of the city center, the Cleveland Hopkins Airport was the first major airport in the world to provide an integrated system of paved landing surfaces, lighted runways, and a terminal complex consisting of hangars and operating facilities.…
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Stretching 242 miles from the Colorado River on the California-Arizona border to its final holding reservoir near Riverside, California, the Colorado River Aqueduct consists of more than 90 miles of tunnels, nearly 55 miles of cut-and-cover conduit, almost 30 miles of siphons, and five…
A project that combined great engineering ambition and burgeoning civic pride, the Columbia River Highway was built at the dawn of the automobile age out of a desire to bring greater attention to the growing population and natural beauty of the Pacific Northwest. By the time of its completion in…
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The total length of the Columbia-Wrightsville Bridge is 7,374 feet. Its construction required 100,000 cubic yards of concrete and 8 million pounds of steel reinforcing rods.
Consisting of 28 arches, each 185 feet long, the Columbia-Wrightsville Bridge carrying automobile traffic…
"This is the first Portland cement concrete street built in the United States ... Here started the better roads movement which has given our citizens from coast to coast swift and sure transportation."
- Historic marker, Bellefontaine, Ohio, celebrating the 50th anniversary of…
When a new road bridge was constructed alongside it, plans were made to demolish the Conwy Suspension Bridge. There was a national outcry and, since 1958, the bridge has been in the care of the National Trust and closed to vehicular traffic.
Designed by Thomas Telford in the…
Built by Robert Stephenson to carry the Chester and Holyhead Railway across the River Conwy, this bridge was erected between 1846 and 1848. It consists of a single span 400 feet long, formed by two parallel rectangular wrought iron tubes, each weighing 1300 tons. Masonry towers were built on the…
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The Cornish-Windsor Covered Bridge is the longest wooden bridge in the United States and the longest two-span, covered bridge in the world. It is also a classic example of wooden bridge-building in 19th-century America. With copious supplies of timber at hand and a generous reserve of carpentry…
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