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Dalton Covered Bridge
The Dalton Covered Bridge, also called the Dalton Bridge, is a historic covered bridge that carries Joppa Road over the Warner River in Warner, New Hampshire. Its name refers to a nearby resident (first "Mrs. Dalton", then "Widow Dalton") at the time of its construction. The bridge was built in 1853 by Joshua Sanborn, and its original abutments were built by George Sawyer and Webster Davis; all were local residents. The bridge has a span of , with a total bridge length (including portals and roof) of . The bridge is wide, with a road bed width of , although guard rails have reduced its usable width to just under . The bridge uses a combination of truss types to support the load, following a patent issued in 1837 to Stephen Long, who also patented the Long truss. Its primary support mechanism is a king post truss, in which a vertical post is joined to chord members by iron bolts. This primary support is supplemented by a queen post truss system that flank the king truss wal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warner, New Hampshire
Warner is a town in Merrimack County, New Hampshire, United States. The population was 2,937 at the 2020 census. The town is home to Magdalen College of the Liberal Arts, Rollins State Park and Mount Kearsarge State Forest. The town's central village, where 453 people resided at the 2020 census, is defined as the Warner census-designated place (CDP) and is located along New Hampshire Route 103 and the Warner River. The town also includes the communities of Davisville, Lower Village, Melvin Mills, and Waterloo. History The town was granted in 1735 as "Number One" by Massachusetts Governor Jonathan Belcher to petitioners largely from Amesbury, Massachusetts. Called "New Amesbury", it was part of a line of settlements running between the Merrimack and Connecticut rivers intended to help defend Massachusetts against New France's predations. It was regranted by the Masonian Proprietors in 1749, when it was settled with four houses and a sawmill. Called "Jennesstown", it was a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Covered Bridge
A covered bridge is a timber-truss bridge with a roof, decking, and siding, which in most covered bridges create an almost complete enclosure. The purpose of the covering is to protect the wooden structural members from the weather. Uncovered wooden bridges typically have a lifespan of only 20 years because of the effects of rain and sun, but a covered bridge could last over 100 years. In the United States, only about 1 in 10 survived the 20th century. The relatively small number of surviving bridges is due to deliberate replacement, neglect, and the high cost of restoration. European and North American truss bridges Typically, covered bridges are structures with longitudinal timber-trusses which form the bridge's backbone. Some were built as railway bridges, using very heavy timbers and doubled up lattice work. In Canada and the U.S., numerous timber covered bridges were built in the late 1700s to the late 1800s, reminiscent of earlier designs in Germany and Switzerland. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warner River
The Warner River is a river located in central New Hampshire in the United States. It is a tributary of the Contoocook River, part of the Merrimack River watershed. The Warner River begins at the outlet of Todd Lake in Bradford, New Hampshire, 300 meters upstream of the confluence of the West Branch. The river flows east, receiving the outlet of Lake Massasecum, and enters the town of Warner. The small river has a long whitewater section in western Warner, passing under the Waterloo Covered Bridge next to an old railroad station, then reaches Interstate 89, after which the river flattens and meanders over gravel bars. A small waterfall at Davisville interrupts the flatwater, which resumes to the river's end, just north of the village of Contoocook, New Hampshire, in the town of Hopkinton. New Hampshire Route 103 follows the Warner River for most of the river's length. See also *List of rivers of New Hampshire This is a list of rivers and significant streams in the U.S. state ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long 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 (mechanics), tension, compression (physical), 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
King Post
A king post (or king-post or kingpost) is a central vertical post used in architectural or bridge designs, working in tension to support a beam below from a truss apex above (whereas a crown post, though visually similar, supports items above from the beam below). In aircraft design a strut called a king post acts in compression, similarly to an architectural crown post. Usage in mechanical plant and marine engineering differs again, as noted below. Architecture A king post extends vertically from a crossbeam (the tie beam) to the apex of a triangular truss. The king post, itself in tension, connects the apex of the truss with its base, holding up the tie beam (also in tension) at the base of the truss. The post can be replaced with an iron rod called a king rod (or king bolt) and thus a king rod truss. The king post truss is also called a "Latin truss". In traditional timber framing, a crown post looks similar to a king post, but it is very different structurally: whereas th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queen Post
A queen post is a tension member in a truss that can span longer openings than a king post truss. A king post uses one central supporting post, whereas the queen post truss uses two. Even though it is a tension member, rather than a compression member, they are commonly still called a post. A queen post is often confused with a queen strut, one of two compression members in roof framing which do not form a truss in the engineering sense. The double punch truss appeared in Central Europe during the Renaissance. Architecture A queen-post bridge has two uprights, placed about one-third of the way from each end of the truss. They are connected across the top by a beam and use a diagonal brace between the outer edges. The central square between the two verticals is either unbraced (on shorter spans), or has one or two diagonal braces for rigidity. A single diagonal reaches between opposite corners; two diagonal braces may either reach from the bottom of each upright post to the cente ... [...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] |
List Of Bridges On The National Register Of Historic Places In New Hampshire ...
This is a list of bridges on the National Register of Historic Places in the U.S. state of New Hampshire. Current listings Former listing See also *List of covered bridges in New Hampshire Notes References {{National Register of Historic Places in New Hampshire New Hampshire Bridges Bridges 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 someth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Covered Bridges In New Hampshire
This is a list of New Hampshire covered bridges, old, new, and restored. There are 58 historic wooden covered bridges currently standing and assigned official numbers by the U.S. state of New Hampshire. There are additional covered bridges extant in the state, some of which are on private property and not accessible to the public. The newest covered bridge known to have been constructed in the state is the Chester Covered Bridge, built in 2011. Standing covered bridges Some bridges go by two or more names; this list uses the name posted on the bridge. Lost covered bridges :''This is a partial list of other covered bridges that once stood in New Hampshire.'' ;Notable * Bedell Covered Bridge ( Haverhill, destroyed 1979) * County Farm Bridge (Dover, burned 1981) *Goffstown Covered Railroad Bridge ( Goffstown, burned 1976) * New Henniker Bridge ( West Hopkinton, dismantled 1936) ;Others * Androscoggin River Covered Bridge ( Errol) *Clear Stream Covered Bridge (Errol) * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Register Of Historic Places Listings In Merrimack County, New Hampshire
This is a list of the National Register of Historic Places listings in Merrimack County, New Hampshire. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Merrimack County, New Hampshire, Merrimack County, New Hampshire, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in a map. There are 88 properties and districts listed on the National Register in the county, including 2 National Historic Landmarks. Current listings See also * List of National Historic Landmarks in New Hampshire * National Register of Historic Places listings in New Hampshire References * {{DEFAULTSORT:National Register Of Historic Places Listings In Merrimack County, New Hampshire Lists of National Register of Historic Places in New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 1853
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges In Merrimack County, New Hampshire
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] |
_bridge%2C_entrance%2C_circa_1877_-_DPLA_-_d729e9efdd48d34d1fce20fb80c6bd89.jpeg "Click for more on -> Covered Bridge")
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