Dalton Covered Bridge
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The Dalton Covered Bridge, also called the Dalton Bridge, is a historic covered bridge that carries Joppa Road over the
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, 3 ...
in
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 centra ...
. 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 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), tensi ...
. 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 walls. The trusses are mounted on abutments that are primarily fieldstone, but were capped in concrete in the 20th century. The mounting is secured by iron tension rods. The exterior walls of the bridge are vertical boarding with four windows; this finish was also rehabilitated in the 1960s. The gabled roof is made of corrugated metal. The bridge was 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 v ...
in 1976.


See also

*
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 Histo ...
* List of covered bridges in New Hampshire *
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 H ...


References


External links

{{NRHP in Merrimack County, New Hampshire Bridges completed in 1853 Bridges in Merrimack County, New Hampshire Covered bridges on the National Register of Historic Places in New Hampshire Queen post truss bridges in the United States National Register of Historic Places in Merrimack County, New Hampshire Warner, New Hampshire Road bridges on the National Register of Historic Places in New Hampshire Wooden bridges in New Hampshire