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Devil's Canyon Bridge
The Devil's Canyon Bridge (located in Pinal County, Arizona) was built in 1921 and listed on the National Register of Historic Places in 1988. It is an historic abandoned section of U.S. Route 60 over Devil's Canyon.Google maps, and pic info at Commons.wikimedia.org. Described as a medium-span, filled-spandrel arch, with a moderate arch barrel rise, a roadway which cantilevered over the arches on both sides, a corbeled arch ring and paneled concrete parapets with steel pipe guardrails. Under the supervision of AHD Resident Engineer H.B. Wright, a force account labor crew constructed the Devil's Canyon Bridge in 1921–22 for a total cost of $23,780. It carried traffic until its replacement in 1941. The Devil's Canyon Bridge now stands abandoned beside U.S. 60. The Devil's Canyon Bridge is historically significant as an integral part fone of the state's most important early highway projects. Additionally, this structure is technologically important as an early example of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superior, Arizona
Superior (Western Apache: Yooʼ Łigai) is a town in Pinal County, Arizona. According to the 2020 census, the population of the town is 2,407. Superior was founded as a mining town for the Silver King and the later Magma mines; silver was mined at first, and then transitioned to copper. Currently, exploitation of the huge Resolution Copper deposit is being explored. History Like nearby Globe, Ray, and Clifton, Arizona, Superior was once part of a huge Apache reservation, but after silver and copper deposits were discovered, those areas were withdrawn from the reservation and returned to the public domain. In 1872, at the height of the American Indian Wars, a band of raiding Apache horsemen were ambushed by a United States Cavalry force from Picket Post Mountain. After losing 50 men, the Apache retreated up the mountain later named "Apache Leap". According to local legend, the remaining Apache accepted defeat and leapt to their death rather than being captured by the cavalr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinal County, Arizona
Pinal County is in the central part of the U.S. state of Arizona. According to the 2020 census, the population of the county was 425,264, making it Arizona's third-most populous county. The county seat is Florence. The county was founded in 1875. Pinal County contains parts of the Tohono Oʼodham Nation, the Gila River Indian Community and the San Carlos Apache Indian Reservation, as well as all of the Ak-Chin Indian Community. Pinal County is included in the Phoenix–Mesa– Scottsdale, Arizona Metropolitan Statistical Area. Suburban growth southward from greater Phoenix has begun to spread into the county's northern parts; similarly, growth northward from Tucson is spreading into the county's southern portions. Pinal County has five cities: Maricopa, Casa Grande, Apache Junction, Eloy, and Coolidge. There are also many unincorporated areas, which have shown accelerated growth patterns in recent years; such suburban development is likely to continue for the foreseeable fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Register Of Historic Places
The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic value". A property listed in the National Register, or located within a National Register Historic District, may qualify for tax incentives derived from the total value of expenses incurred in preserving the property. The passage of the National Historic Preservation Act (NHPA) in 1966 established the National Register and the process for adding properties to it. Of the more than one and a half million properties on the National Register, 95,000 are listed individually. The remainder are contributing resources within historic districts. For most of its history, the National Register has been administered by the National Park Service (NPS), an agency within the U.S. Department of the Interior. Its goals are to help property owners and inte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Devil's Canyon (Pinal County, Arizona)
Devil's Canyon may refer to: Arts and entertainment * ''Devil's Canyon'' (1935 film), a 1935 Western film produced by Anthony J. Xydias * ''Devil's Canyon'' (1953 film), a 1953 3-D Western film * ''Rustlers of Devil's Canyon'', a 1947 Western film * ''Devil's Canyon'' (album), a 1996 album by Molly Hatchet Places United States Devil's Canyon may refer to many canyons in the United States, including: * Devil's Canyon (Kiowa County, Oklahoma) * Devil's Canyon (Canadian County, Oklahoma) * Devils Canyon (Jacumba Mountains), San Diego County, California * Devil Canyon, San Bernardino Mountains, California * Devil's Canyon and Devil's Canyon Trail in San Gabriel Wilderness, Los Angeles County, California * Devil's Canyon Wilderness - A federally designated wilderness area on the western edge of the San Rafael Swell in Emery County, Utah * Devil's Canyon - north of the Lower Monumental Dam on the Snake River in Franklin County, Washington Other places * Devil's Canyon (''Cañ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corbeled Arch
A corbel arch (or corbeled / corbelled arch) is an arch-like construction method that uses the architectural technique of corbeling to span a space or void in a structure, such as an entranceway in a wall or as the span of a bridge. A corbel vault uses this technique to support the superstructure of a building's roof. A corbel arch is constructed by offsetting successive horizontal courses of stone (or brick) beginning at the springline of the walls (the point at which the walls break off from verticality to form an arc toward the apex at the archway's center) so that they project towards the archway's center from each supporting side, until the courses meet at the apex of the archway (often, the last gap is bridged with a flat stone). For a corbeled vault covering, the technique is extended in three dimensions along the lengths of two opposing walls. Although an improvement in load-bearing efficiency over the post and lintel design, corbeled arches are not entirely self-support ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parapets
A parapet is a barrier that is an extension of the wall at the edge of a roof, terrace, balcony, walkway or other structure. The word comes ultimately from the Italian ''parapetto'' (''parare'' 'to cover/defend' and ''petto'' 'chest/breast'). Where extending above a roof, a parapet may simply be the portion of an exterior wall that continues above the edge line of the roof surface, or may be a continuation of a vertical feature beneath the roof such as a fire wall or party wall. Parapets were originally used to defend buildings from military attack, but today they are primarily used as guard rails, to conceal rooftop equipment, reduce wind loads on the roof, and to prevent the spread of fires. In the Bible the Hebrews are obligated to build a parapet on the roof of their houses to prevent people falling (Deuteronomy 22:8). Parapet types Parapets may be plain, embattled, perforated or panelled, which are not mutually exclusive terms. *Plain parapets are upward extensions of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Force Account Labor
In physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity (e.g. moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newton (N). Force is represented by the symbol (formerly ). The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time. If the mass of the object is constant, this law implies that the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object. Concepts related to force include: thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque, whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luten Arch
A Luten arch is a patented concrete arch design for bridges, designed by Daniel B. Luten, of Indianapolis. Luten was awarded more than 30 patents for his improvements of the Luten arch design. The Luten arch improves upon preceding concrete arch designs by strategic use of reinforcement where needed to address tension of load upon the bridge. This enables bridges to be considerably lighter. The Luten Bridge Company was one seller of the designs. The Topeka Bridge & Iron Co. was a western seller of the designs. According to Luten, by 1919 he had designed more than 17,000 Luten arch bridges, and there were examples in all but three US states.P.A.C. Spero & Co. and Louis Berger Associates (1995)Concrete Arch Bridges in Chapter IX of ''Historic Highway Bridges in Maryland: 1631-1960, Historic Context Report'', Maryland State Highway Administration, Maryland Department of Transportation The Maryland Department of Transportation (MDOT) is an organization comprising five bus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Spandrel Arch
An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct (a long bridge) may be made from a series of arches, although other more economical structures are typically used today. History Possibly the oldest existing arch bridge is the Mycenaean Arkadiko Bridge in Greece from about 1300 BC. The stone corbel arch bridge is still used by the local populace. The well-preserved Hellenistic Eleutherna Bridge has a triangular corbel arch. The 4th century BC Rhodes Footbridge rests on an early voussoir arch. Although true arches were already known by the Etruscans and ancient Greeks, the Romans were – as with the vault and the dome – the first to fully realize the potential of arches for bridge construction. A list of Roman bridges compiled by the engineer Colin O'Connor features ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daniel Luten
Daniel B. Luten also known as Daniel Benjamin Luten (Dec. 26, 1869-July 3, 1946) was an American bridge builder and engineer based in Indianapolis, Indiana. Career He designed and patented the Luten arch, a type of concrete arch bridge. He obtained more than 30 patents eventually, including various refinements of design that used transverse and other reinforcement which allowed bridges to be lighter. "By 1919, Luten claimed to have designed some 17,000 arches, and stated that examples of his designs could be found in all but three states of the Union. Indiana alone had some 2,000 Luten arches." He was born in Grand Rapids, Michigan in 1869. He graduated from the University of Michigan in 1894, in civil engineering. He was an instructor, in architectural and sanitary engineering, for Purdue University from 1895 to 1900. He resigned in 1900 to conduct the bridge company work. List of Bridges A number of historic bridges, some of which are listed on the U.S. National Regis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lynx Creek Bridge
A lynx is a type of wild cat. Lynx may also refer to: Astronomy * Lynx (constellation) * Lynx (Chinese astronomy) * Lynx X-ray Observatory, a NASA-funded mission concept for a next-generation X-ray space observatory Places Canada * Lynx, Ontario, an unincorporated place and railway point * Lynx Mountain, in the Canadian Rockies * Lynx Lake (Northwest Territories) * Lynx Formation, a stratigraphical unit in western Canada United States * Lynx, Ohio, a census-designated place * Lynx Lake (Arizona), a reservoir Antarctica * Lynx Rocks, South Shetland Islands, Antarctica Transport Vehicles * Leyland Lynx, a model of single-decker bus produced by British Leyland in the 1980s and 1990s * Mercury Lynx, a model of car * Mitsubishi Lynx, a 1993 Mitsubishi Motors concept car * GWR no. 2109 Lynx, a South Devon Railway Eagle class steam locomotive * ''Lynx'' (tall ship), an interpretation of the 1812 privateer schooner, launched in 2001 * Lynx (snowmobile), a brand of snowmobil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verde River Bridge
The Verde River Bridge near Paulden, Arizona, was built in 1922. It was listed on the National Register of Historic Places in 1988. It is a filled spandrel arch bridge with a span.P. E-13 It is located on Sullivan Lake Rd., what is now labelled on maps as N. Old Highway 89., about half a mile from the current crossing of Verde River by Arizona State Route 89. See also * Perkinsville Bridge The Perkinsville Bridge over the Verde River was established in 1936 when it was moved from the San Carlos Indian Reservation over the Gila River. The current structure was constructed from spans of the San Carlos Bridge which was built in 1913 a ..., also spanning Verde River, also NRHP-listed * Verde River Sheep Bridge, also NRHP-listed References {{National Register of Historic Places Road bridges on the National Register of Historic Places in Arizona Bridges completed in 1922 Buildings and structures in Yavapai County, Arizona 1922 establishments in Arizona National Regis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
