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List Of Bridges On The National Register Of Historic Places In Oregon
This is a list of bridges and tunnels on the National Register of Historic Places in the U.S. state of Oregon. It includes a number of viaducts which are considered bridges. A list of bridges, tunnels, and viaducts of the Historic Columbia River Highway is included. __TOC__ Gray shading indicates that a structure has been removed from the Register. Often the road listed in the "location" column now parallels the bridge on a new one, and the old bridge is closed to traffic. Bridges and tunnels besides in Historic Columbia River Highway Historic Columbia River Highway bridges and tunnels These are contributing structures in the Historic Columbia River Highway, which was listed on the National Register of Historic Places in 1983, and was further designated a National Historic Landmark District in 2000. With See also *List of Oregon covered bridges *List of bridges in the United States References * (does not include places no longer listed)Oregon National Register List No ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridge
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belknap Bridge Exterior End P1850
Belknap may refer to: Places United States *Belknap, Illinois, a village *Belknap, Indiana, an unincorporated community *Belknap, Louisville, Kentucky, a neighborhood * Belknap, Montana, a census-designated place *Belknap, Rhode Island, a village * Belknap, Texas, a ghost town *Belknap County, New Hampshire **Belknap Mountains ***Belknap Mountain *Belknap Crater, a volcanic feature in Oregon *Belknap Hill, in Grand Rapids, Michigan *Belknap Springs, Oregon * Belknap Township, Pottawattamie County, Iowa * Belknap Township, Michigan *Fort Belknap Indian Reservation, Montana Antarctica *Belknap Nunatak, Ellsworth Land American structures on the National Register of Historic Places *Fort Belknap (Texas), built in 1851 to protect the Texas frontier against raids by the Kiowa and Comanche *Belknap School, Belknap, Rhode Island, a former schoolhouse *Belknap House, Carson City, Nevada *Belknap Stone House, Newburgh, New York *Belknap Bridge, Oregon In the military *, more than one United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portland, Oregon
Portland (, ) is a port city in the Pacific Northwest and the largest city in the U.S. state of Oregon. Situated at the confluence of the Willamette and Columbia rivers, Portland is the county seat of Multnomah County, the most populous county in Oregon. Portland had a population of 652,503, making it the 26th-most populated city in the United States, the sixth-most populous on the West Coast, and the second-most populous in the Pacific Northwest, after Seattle. Approximately 2.5 million people live in the Portland metropolitan statistical area (MSA), making it the 25th most populous in the United States. About half of Oregon's population resides within the Portland metropolitan area. Named after Portland, Maine, the Oregon settlement began to be populated in the 1840s, near the end of the Oregon Trail. Its water access provided convenient transportation of goods, and the timber industry was a major force in the city's early economy. At the turn of the 20th century, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broadway Bridge (Portland)
The Broadway Bridge is a Rall-type bascule bridge spanning the Willamette River in Portland, Oregon, United States, built in 1913. It was Portland's first bascule bridge, and it continues to hold the distinction of being the longest span of its bascule design type in the world. It was added to the National Register of Historic Places in November 2012. History and description The bridge was anticipated to be the world's longest bascule bridge and there was competition between the Strauss, Scherzer, and Rall bascule design patent holders. The "Rall" was selected based on cost. Ralph Modjeski designed the structure, which opened on April 22, 1913, at a cost of $1.6 million. It was the world's longest double-leaf bascule bridge, of any bascule type, at the time. The bridge's name derives from the street it carries, Broadway, but at the time of the bridge's construction that street name was in use only east of the river. The westside portion of what is now Broadway had been named 7th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bowstring Arch
A tied-arch bridge is an arch bridge in which the outward horizontal forces of the arch(es) caused by tension at the arch ends to a foundation are countered by equal tension of its own gravity plus any element of the total deck structure such great arch(es) support. The arch(es) have strengthened chord(s) that run to a strong part of the deck structure or to independent tie-rods below the arch ends. Description Thrusts downwards on a tied-arch bridge deck are translated, as tension, by vertical ties between the deck and the arch, tending to flatten it and thereby to push its tips outward into the abutments, like for other arch bridges. However, in a tied-arch or bowstring bridge, these movements are restrained not by the abutments but by the strengthened chord, which ties these tips together, taking the thrusts as tension, rather like the string of a bow that is being flattened. Therefore, the design is also called a bowstring-arch or bowstring-girder bridge. The elimination o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florence, Oregon
Florence is a coastal city in Lane County, in the U.S. state of Oregon. It lies at the mouth of the Siuslaw River on the Pacific Ocean and about midway between Newport and Coos Bay along U.S. Route 101. As of the 2020 census, the city had a total population of 8,921. History The Florence area was originally inhabited by the Siuslaw tribe of Native Americans. Some claim that the city was named after state senator A. B. Florence, who represented Lane County from 1858 to 1860; another claim is that Florence was named after a French vessel that was wrecked at the mouth of the Siuslaw River on February 17, 1875. Exploding whale On November 12, 1970, Florence was the site of a famous scene, when town authorities used 20 cases of explosives to try to blow up a dead beached whale, with unintended consequences.Report by Paul Linnman (KATU TV), transcribed by Hackstadt, J.; Hackstadt, SAnnotated transcript of the video theexplodingwhale.com. Retrieved January 8, 2007. In 2020 r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Creek (Lane County, Oregon)
Big Creek is a stream that enters the Pacific Ocean along the coast of Lane County in the U.S. state of Oregon. Beginning at Saddle Mountain Spring in the Central Oregon Coast Range, it flows generally west through the Siuslaw National Forest to the ocean north of Heceta Head. Near its mouth, it passes under Big Creek Bridge, which carries U.S. Route 101. The creek's two named tributaries are Panther Creek and, further downstream, Fryingpan Creek. Upstream of Panther Creek is the Big Creek Campground, a Lane County park with four sites for tents. Amenities include toilets but no drinking water, and the campground provides access to fishing, hiking, and hunting. See also * List of rivers of Oregon This is a partial listing of rivers in the state of Oregon, United States. This list of Oregon rivers is organized alphabetically and by tributary structure. The list may also include streams known as creeks, brooks, forks, branches and prongs, a ... References Rivers of Orego ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US 101 (OR)
U.S. Route 101 (US 101), is a major north–south U.S. Highway in Oregon that runs through the state along the coastline near the Pacific Ocean. It runs from the California border, south of Brookings, to the Washington state line on the Columbia River, between Astoria, Oregon, and Megler, Washington. US 101 is designated as the Oregon Coast Highway No. 9 (''see Oregon highways and routes''), as it serves the Oregon Coast region. Much of the highway runs between the Pacific Ocean and the Oregon Coast Range, thus US 101 is frequently mountainous in character. For most of its length it is a two-lane undivided highway. Many parts of the highway are subject to closure due to landslides caused by excessive rainfall, and in many parts of the coast, US 101 is the only viable route connecting certain coastal communities. Thus, in many cases when landslides block US 101, the detour requires traveling inland over the Coast Range to alternative north–sout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Creek Bridge No
Big or BIG may refer to: * Big, of great size or degree Film and television * ''Big'' (film), a 1988 fantasy-comedy film starring Tom Hanks * '' Big!'', a Discovery Channel television show * ''Richard Hammond's Big'', a television show presented by Richard Hammond * ''Big'' (TV series), a 2012 South Korean TV series * '' Banana Island Ghost'', a 2017 fantasy action comedy film Music * '' Big: the musical'', a 1996 musical based on the film * Big Records, a record label * ''Big'' (album), a 2007 album by Macy Gray * "Big" (Dead Letter Circus song) * "Big" (Sneaky Sound System song) * "Big" (Rita Ora and Imanbek song) * "Big", a 1990 song by New Fast Automatic Daffodils * "Big", a 2021 song by Jade Eagleson from ''Honkytonk Revival'' *The Notorious B.I.G., an American rapper Places * Allen Army Airfield (IATA code), Alaska, US * BIG, a VOR navigational beacon at London Biggin Hill Airport * Big River (other), various rivers (and other things) * Big Island (disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Howe Truss
A Howe truss is a truss bridge consisting of chords, verticals, and diagonals whose vertical members are in tension and whose diagonal members are in compression. The Howe truss was invented by William Howe in 1840, and was widely used as a bridge in the mid to late 1800s. Development The earliest bridges in North America were made of wood, which was abundant and cheaper than stone or masonry. Early wooden bridges were usually of the Towne lattice truss or Burr truss design. Some later bridges were McCallum trusses (a modification of the Burr truss). About 1840, iron rods were added to wooden bridges. The Pratt truss used wooden vertical members in compression with diagonal iron braces. The Howe truss used iron vertical posts with wooden diagonal braces. Both trusses used counter-bracing, which was becoming essential now that heavy railroad trains were using bridges. In 1830, Stephen Harriman Long received a patent for an all-wood parallel chord truss bridge. Long's bridge con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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