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Poffenberger Road Bridge
The Poffenberger Road Bridge, near Jefferson, Maryland, is a wrought iron bridge by the Wrought Iron Bridge Company of Canton, Ohio. The bridge is similar to the Fourpoints Bridge The Fourpoints Bridge, near Emmitsburg, Maryland is a wrought iron bridge by the Wrought Iron Bridge Company of Canton, Ohio. The bridge crosses Toms Creek and is similar to the Poffenberger Road Bridge The Poffenberger Road Bridge, near Je ... elsewhere in Frederick County. The bridge is a single-span double-intersection Pratt truss. It was built ''circa'' 1878 and remains in daily use. It was listed on the National Register of Historic Places in 1978. See also * List of bridges documented by the Historic American Engineering Record in Maryland * List of bridges on the National Register of Historic Places in Maryland References External links *, including photo in 1977, at Maryland Historical Trust * Wrought iron bridges in the United States Road bridges on the National Register ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middletown, Maryland
Middletown is a town in Frederick County, Maryland, United States. The population was 4,136 as of the 2010 census. Located in the Middletown Valley that stretches between the Catoctin Mountains on the east and South Mountain on the west, the town reportedly gained its name from its location midway between those ranges. History A young Lieutenant George Washington, while surveying the South Mountain area, reported that the valley to the east was one of the most beautiful places he had ever seen. Later, as a colonel in 1755, he was to accompany General Braddock on the old Indian Trail that ran through the valley on his way to Fort Cumberland. The early German and English settlers started to arrive in the valley in the 1730s. Among them was Michael Jesserong, who paid £66 for . He named his property Middletown and sold the first lots there in 1767, the date officially marked as that of the town's founding. The history of Middletown is a mirror on the nation's development. Main Str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Bridges Documented By The Historic American Engineering Record In Maryland
__NOTOC__ This is a list of bridges documented by the Historic American Engineering Record in the US state of Maryland. Bridges See also *List of bridges on the National Register of Historic Places in Maryland This is a list of bridges and tunnels on the National Register of Historic Places in the U.S. state of Maryland. References {{NRHP bridges Bridges on the National Register of Historic Places in Maryland, Lists of bridges on the Nationa ... * List of covered bridges in Maryland * List of tunnels documented by the Historic American Engineering Record in Maryland References {{HAER list, structure=bridge Bridges in Maryland, *List Historic American Engineering Record in Maryland, *List Lists of bridges documented by the Historic American Engineering Record, Maryland Lists of buildings and structures in Maryland, Bridges Maryland transportation-related lists, Bridges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Historic American Engineering Record In Maryland
History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the History of writing#Inventions of writing, invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well as the memory, discovery, collection, organization, presentation, and interpretation of these events. Historians seek knowledge of the past using historical sources such as written documents, oral accounts, art and material artifacts, and ecological markers. History is not complete and still has debatable mysteries. History is also an Discipline (academia), academic discipline which uses narrative to describe, examine, question, and analyze past events, and investigate their patterns of cause and effect. Historians often debate which narrative best explains an event, as well as the significance of different causes and effects. Historians also debate the historiography, nature of history as an end in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 1878
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 wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges In Frederick County, Maryland
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 wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridges On The National Register Of Historic Places In Maryland
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrought Iron Bridges In The United States
Wrought is the archaic form of "worked," the more commonly used past tense and past participle of work. Wrought may also refer to: * Metalworking, the process of working with metals to create individual parts, assemblies, or large-scale structures. ** Wrought iron Wrought iron is an iron alloy with a very low carbon content (less than 0.08%) in contrast to that of cast iron (2.1% to 4%). It is a semi-fused mass of iron with fibrous slag Inclusion (mineral), inclusions (up to 2% by weight), which give it a ..., iron with a very low carbon content that has been wrought (hammered) by hand. See also * * Wright (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Bridges On The National Register Of Historic Places In Maryland
This is a list of bridges and tunnels on the National Register of Historic Places in the U.S. state of Maryland. References {{NRHP bridges Bridges on the National Register of Historic Places in Maryland, Lists of bridges on the National Register of Historic Places by state, Maryland Maryland transportation-related lists, Bridges Lists of buildings and structures in Maryland, Bridges ... [...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] |
Wrought Iron Bridge Company
The Wrought Iron Bridge Company was a bridge fabrication and construction company based in Canton, Ohio, United States. It specialized in the fabrication of iron truss bridges and was a prolific bridge builder in the late 19th century. It was one of the 28 firms consolidated by J. P. Morgan into the American Bridge Company in 1900. Many of its bridges have been listed on the National Register of Historic Places. Products The Wrought Iron Bridge Company specialized in relatively short-span iron truss bridges. Most were built for highway use, as the railroads were all privately owned at the time and employed their own engineers. The company supplied a catalog of bridge designs and mass-produced the parts to build these designs. Once a bridge was ordered, the pieces were shipped by train to the nearest station. Thus, local contractors were able to assemble a bridge very quickly, much like a model. 1882 pamphlet An illustrated pamphlet, dated 1882, is availablonline In this pamphle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratt Truss
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederick County, Maryland
Frederick County is located in the northern part of the U.S. state of Maryland. At the 2020 U.S. Census, the population was 271,717. The county seat is Frederick. Frederick County is included in the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area. Like other outlying sections of the Washington metropolitan area, Frederick County has experienced a rapid population increase in recent years. It borders the southern border of Pennsylvania and the northeastern border of Virginia. The county is the location of Catoctin Mountain Park (encompassing the presidential retreat Camp David) and the U.S. Army's Fort Detrick. Etymology The namesake of Frederick County and its county seat is unknown, but it was probably either Frederick, Prince of Wales, or Frederick Calvert, 6th Baron Baltimore. History Frederick County was created in 1748 by the Province of Maryland from parts of Prince George's County and Baltimore County. In 1776, following US independence, F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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