Crab Run Lane Truss Bridge
Crab Run Lane Truss Bridge is a historic Truss bridge located on State Route 645 in McDowell, Highland County, Virginia. It was built in 1896, by the West Virginia Bridge Works of Wheeling, West Virginia. It is a single-span, four-panel pony truss measuring long, wide, and tall. Much of the bridge is constructed of bent and straight steel railroad rails. The bridge was taken out of service for vehicular traffic in 1994; it is now used to carry pedestrian and bicycle traffic. an''Accompanying four photos''/ref> The bridge was listed on the National Register of Historic Places in 2009. See also *List of bridges on the National Register of Historic Places in Virginia This is a list of bridges and tunnels on the National Register of Historic Places in the U.S. state of Virginia. References {{NRHP bridges Virginia Bridges Bridges A bridge is a structure built to span a physical obstacle (such a ... References Road bridges on the National Register of Histo ...
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Virginia State Route 645 (Highland County)
State Route 645 (SR 645) in the U.S. state of Virginia is a secondary route designation applied to multiple discontinuous road segments among the many counties. The list below describes the sections in each county that are designated SR 645. List References External links {{commonscat, Virginia State Route 645 645 __NOTOC__ Year 645 ( DCXLV) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. The denomination 645 for this year has been used since the early medieval period, when the Anno Domini calendar era ...

McDowell, Virginia
McDowell is an unincorporated community in Highland County, Virginia, United States. McDowell is southeast of Monterey, Virginia on U.S. Route 250. It is in the Bullpasture Valley near the mouth of Crab Run on the Bullpasture River. The community was named after James McDowell, governor of Virginia from 1843 to 1846. McDowell is the location of the May 8, 1862 Battle of McDowell during the American Civil War. The community has a post office with ZIP code 24458 that was established in 1828. The Crab Run Lane Truss Bridge, Mansion House, and McClung Farm Historic District are listed on the 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 .... RiverRun Farm, a sheep, wool and lamb producing farm is located just south if the conflunce of Cr ...
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Truss Bridge
A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements, usually forming triangular units. The connected elements (typically straight) may be stressed from tension, compression, or sometimes both in response to dynamic loads. The basic types of truss bridges shown in this article have simple designs which could be easily analyzed by 19th and early 20th-century engineers. A truss bridge is economical to construct because it uses materials efficiently. Design The nature of a truss allows the analysis of its structure using a few assumptions and the application of Newton's laws of motion according to the branch of physics known as statics. For purposes of analysis, trusses are assumed to be pin jointed where the straight components meet, meaning that taken alone, every joint on the structure is functionally considered to be a flexible joint as opposed to a rigid joint with strength to maintain its own shape, and th ...
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Highland County, Virginia
Highland County is a county located in the Commonwealth of Virginia. As of the 2020 census, the population was 2,232. Its county seat is Monterey. Known as "Virginia's Switzerland" or "Virginia's Little Switzerland", Highland County is the least populous jurisdiction in Virginia, including counties and independent cities. Highland lays claim to being one of the least populous counties and one of the highest average elevations east of the Mississippi River. History Settlement of this portion of the Colony of Virginia by Europeans began around 1745. Located west of the Tidewater and Piedmont regions in Virginia and also west of the Shenandoah Valley, this area is beyond (known in old Virginia as the "Transmountaine") the Blue Ridge Mountains. Rather than cross such a formidable physical barrier, most early settlers came southerly up the Valley across the Potomac River from Maryland and Pennsylvania. Many followed the Great Wagon Road, also known as the Valley Pike ( U.S. Route ...
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Wheeling, West Virginia
Wheeling is a city in the U.S. state of West Virginia. Located almost entirely in Ohio County, of which it is the county seat, it lies along the Ohio River in the foothills of the Appalachian Mountains and also contains a tiny portion extending into Marshall County. Wheeling is located about 60 miles (96 km) west of Pittsburgh and is the principal city of the Wheeling metropolitan area. As of the 2020 census, the metro area had a population of 145,205, and the city itself had a population of 27,062. Wheeling was originally a settlement in the British colony of Virginia, and later the second-largest city in the Commonwealth of Virginia. During the American Civil War, Wheeling was the host of the Wheeling Conventions that led to the formation of West Virginia, and it was the first capital of the new state. Due to its location along major transportation routes, including the Ohio River, National Road, and the B&O Railroad, Wheeling became a manufacturing center in the late n ...
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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 ...
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List Of Bridges On The National Register Of Historic Places In Virginia
This is a list of bridges and tunnels on the National Register of Historic Places in the U.S. state of Virginia. References {{NRHP bridges Virginia Bridges Bridges A bridge is a structure built to Span (engineering), span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, whic ...

Road Bridges On The National Register Of Historic Places In Virginia
A road is a linear way for the conveyance of traffic that mostly has an improved surface for use by vehicles (motorized and non-motorized) and pedestrians. Unlike streets, the main function of roads is transportation. There are many types of roads, including parkways, avenues, controlled-access highways (freeways, motorways, and expressways), tollways, interstates, highways, thoroughfares, and local roads. The primary features of roads include lanes, sidewalks (pavement), roadways (carriageways), medians, shoulders, verges, bike paths (cycle paths), and shared-use paths. Definitions Historically many roads were simply recognizable routes without any formal construction or some maintenance. The Organization for Economic Co-operation and Development (OECD) defines a road as "a line of communication (travelled way) using a stabilized base other than rails or air strips open to public traffic, primarily for the use of road motor vehicles running on their own wheels", which i ...
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Bridges Completed In 1896
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations. Designs of bridges vary depending on factors such as the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, and the material used to make it, and the funds available to build it. The earliest bridges were likely made with fallen trees and stepping stones. The Neolithic people built boardwalk bridges across marshland. The Arkadiko Bridge (dating from the 13th century BC, in the Peloponnese) is one of the oldest arch bridges still in existence and use. Etymology The ''Oxford English Dictionary'' traces the origin of the ...
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Buildings And Structures In Highland County, Virginia
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artistic ...
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National Register Of Historic Places In Highland County, Virginia
__NOTOC__ This is a list of the National Register of Historic Places listings in Highland County, Virginia. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Highland County, Virginia, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in an online map. There are 8 properties and districts listed on the National Register in the county. Current listings See also * List of National Historic Landmarks in Virginia * National Register of Historic Places listings in Virginia References {{Highland County, Virginia Highland Highlands or uplands are areas of high elevation such as a mountainous region, elevated mountainous plateau or high hills. Generally speaking, upland (or uplands) refers to ranges of hills, typically from up to while highland (or highlands) is ...

Truss Bridges In The United States
A truss is an assembly of ''members'' such as beams, connected by ''nodes'', that creates a rigid structure. In engineering, a truss is a structure that "consists of two-force members only, where the members are organized so that the assemblage as a whole behaves as a single object". A "two-force member" is a structural component where force is applied to only two points. Although this rigorous definition allows the members to have any shape connected in any stable configuration, trusses typically comprise five or more triangular units constructed with straight members whose ends are connected at joints referred to as ''nodes''. In this typical context, external forces and reactions to those forces are considered to act only at the nodes and result in forces in the members that are either tensile or compressive. For straight members, moments (torques) are explicitly excluded because, and only because, all the joints in a truss are treated as revolutes, as is necessary for t ...
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