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Doran Memorial Bridge
The Doran Memorial Bridge is the twin pair of steel girder bridges that carry eight lanes of road traffic on Interstate 280 over San Mateo Creek near Hillsborough, California in San Mateo County. History The Doran Memorial Bridge was originally known as the San Mateo Creek Bridge according to Caltrans plans. It was named the Eugene A. Doran Memorial Bridge in 1969, after the Hillsborough police officer who was killed near the site on August 5, 1959; Doran's widow attended the ribbon-cutting ceremony on May 28, 1969. In 2004, the bridge was rededicated as the Officer Eugene A. Doran and Marine Lance Corporal Patrick M. Doran Memorial Bridge to include his son, Patrick, who died in Vietnam on February 18, 1967 while serving in the United States Marine Corps. Prior to the opening ceremony on May 28, 1969, a "Pedestrian Day" was held on May 25, with more than 30,000 crossing the new span on foot. It won the Medium Span, High Clearance category in the 1970 AISC steel bridges cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Mateo Creek (San Francisco Bay Area)
San Mateo Creek (''Spanish for'': St. Matthew Creek) is a perennial stream whose watershed includes Crystal Springs Reservoir, for which it is the only natural outlet after passing Crystal Springs Dam. History After discovering San Francisco Bay from Sweeney Ridge on November 4, 1769, the Portolà expedition descended what Portolà called the ''Cañada de San Francisco'', now San Andreas Creek (or possibly San Mateo Creek). "Laguna Grande" is where the party camped (now covered by the Upper Crystal Springs Reservoir). The Laguna Grande place name is also shown on the 1840s diseño del Rancho Cañada de Raymundo and an 1856 plat. The campsite is marked by California Historical Marker No. 94 "Portola Expedition Camp". They camped here a second time on November 12, on their return trip. Padre Palóu, on an expedition from Mission San Carlos Borromeo (Carmel) to explore the western side of San Francisco Bay led by Captain Fernando Rivera, renamed Portola's ''Cañada de San Franci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verrazano-Narrows Bridge
The Verrazzano-Narrows Bridge ( ) is a suspension bridge connecting the New York City boroughs of Staten Island and Brooklyn. It spans the Narrows, a body of water linking the relatively enclosed New York Harbor with Lower New York Bay and the Atlantic Ocean. It is the only fixed crossing of the Narrows. The double-deck bridge carries 13 lanes of Interstate 278: seven on the upper level and six on the lower level. The span is named for Giovanni da Verrazzano, who in 1524 was the first European explorer to enter New York Harbor and the Hudson River. Engineer David B. Steinman proposed a bridge across the Narrows in the late 1920s, but plans were deferred over the next twenty years. A 1920s attempt to build a Staten Island Tunnel was aborted, as was a 1930s plan for vehicular tubes underneath the Narrows. Discussion of a tunnel resurfaced in the mid-1930s and early 1940s, but the plans were again denied. In the late 1940s, urban planner Robert Moses championed a bridge across t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel Bridges In The United States
Steel is an alloy made up of iron with added carbon to improve its strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels that are corrosion- and oxidation-resistant typically need an additional 11% chromium. Because of its high tensile strength and low cost, steel is used in buildings, infrastructure, tools, ships, trains, cars, machines, electrical appliances, weapons, and rockets. Iron is the base metal of steel. Depending on the temperature, it can take two crystalline forms (allotropic forms): body-centred cubic and face-centred cubic. The interaction of the allotropes of iron with the alloying elements, primarily carbon, gives steel and cast iron their range of unique properties. In pure iron, the crystal structure has relatively little resistance to the iron atoms slipping past one another, and so pure iron is quite ductile, or soft and easily formed. In steel, small amounts of carbon, other ele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridges In California
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", whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Girder Bridges
A girder bridge is a bridge that uses girders as the means of supporting its deck. The two most common types of modern steel girder bridges are plate and box. The term "girder" is often used interchangeably with "beam" in reference to bridge design. However, some authors define beam bridges slightly differently from girder bridges. A girder may be made of concrete or steel. Many shorter bridges, especially in rural areas where they may be exposed to water overtopping and corrosion, utilize concrete box girder. The term "girder" is typically used to refer to a steel beam. In a beam or girder bridge, the beams themselves are the primary support for the deck, and are responsible for transferring the load down to the foundation. Material type, shape, and weight all affect how much weight a beam can hold. Due to the properties of the second moment of area, the height of a girder is the most significant factor to affect its load capacity. Longer spans, more traffic, or wider spacing o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges In San Mateo County, California
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] |
The Flintstone House
The Flintstone House is a free-form, single-family residence in Hillsborough, California overlooking and easily seen from the Doran Memorial Bridge carrying Interstate 280 (California), Interstate 280 over San Mateo Creek (San Francisco Bay Area), San Mateo Creek. History Design The house was designed by architect William Nicholson (architect), William Nicholson and built in 1976 as one of several experimental domed buildings using new materials. It was constructed by spraying shotcrete onto steel rebar and wire mesh frames over inflated aeronautical balloons. It has approximately of living space including three bedrooms, one accessed via a spiral staircase inspired by an ice cream cone that at the top is the same diameter as the room, and two bathrooms, and has a two-car garage. All the interior surfaces are rounded, and the master bathroom has a floor of rocks instead of tiles. Originally off-white in color, the house was repainted deep orange in 2000, and one of the domes was la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crystal Springs Dam
Crystal Springs Dam is a gravity dam constructed across the San Mateo Creek which is in San Mateo County, California. It impounds water to form the Lower Crystal Springs Reservoir which sits atop the San Andreas Fault in a rift valley created by the fault. The dam itself is located about 300 yards (273 meters) east of the fault. It was among the first concrete gravity dams built in the western United States. Skyline Boulevard runs over the dam, which also forms the trailhead of the popular Sawyer Camp Trail. History The structure was completed in 1888. At the time of its completion, it was the largest concrete structure in the world. The designer was Hermann Schussler, Chief Engineer of the Spring Valley Water Company. The dam was constructed by separately pouring large blocks of the structure in place, and allowing them to set before pouring the adjoining blocks. An important design feature is that neither the horizontal nor the vertical joints line up. This helps the struc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gothic Arch
A pointed arch, ogival arch, or Gothic arch is an arch with a pointed crown, whose two curving sides meet at a relatively sharp angle at the top of the arch. This architectural element was particularly important in Gothic architecture. The earliest use of a pointed arch dates back to bronze-age Nippur. As a structural feature, it was first used in Islamic architecture, but in the 12th century it began to be used in France and England as an important structural element, in combination with other elements, such as the rib vault and later the flying buttress. These allowed the construction of cathedrals, palaces and other buildings with dramatically greater height and larger windows which filled them with light. Early arches Crude arches pointed in shape have been discovered from the Bronze Age site of Nippur dated earlier than 2700 BC. The palace of Nineveh also has pointed arched drains but they have no true keystone. File:Trivikram Temple Ter 1.jpg, Temple of Trivikrama in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doran Bridge Model (CHPW May-Jun 1964)
Doran may refer to: People * Abbas Doran (1950–1982d), Iranian IRIAF fighter pilot * Ann Doran (1911–2000), American character actress * Beauchamp Doran (1860–1943), British Army officer during the First World War * Bill Doran (other) * Charles Guilfoyle Doran (1835–1909), Irish leading figure in the Irish Republican Brotherhood (IRB) and the Fenian Brotherhood * Chris Doran (born 1979), Irish singer * Colleen Doran, American writer-artist and cartoonist * Daryl Doran (born 1963), U.S. indoor soccer player. * Frank Doran (other) * Gerry Doran (1877–1943), Irish rugby union international * Henrietta Doran-York (born 1962), Sint Maartener politician * Jamie Doran, Irish-Scottish independent documentary filmmaker * John Doran (other) * John James Doran (1864–1904), Boatswain's Mate, 2nd Class in the United States Navy during the Spanish–American War * Juno Doran, British visual and sound artist * Kelly Doran (born 1957), American bus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cowlitz River Bridge
Cowlitz may refer to: People * Cowlitz people, an indigenous people of the Pacific Northwest ** Cowlitz language, member of the Tsamosan branch of the Coast Salish family of Salishan languages * Cowlitz Indian Tribe, a federally recognized tribe of Cowlitz people Places * Cowlitz County, Washington * Cowlitz Falls Dam, a 70 megawatt hydroelectric dam in Lewis County, Washington * Cowlitz Chimneys * Cowlitz Glacier * Cowlitz Landing, Washington, former name of Toledo, Washington * Cowlitz River, a tributary of the Columbia River * Cowlitz–Natches Road Other * Columbia and Cowlitz Railroad * Cowlitz Black Bears The Cowlitz Black Bears is an amateur baseball team located in Longview, Washington. They play in the West Coast League, a collegiate summer baseball league. The league comprises teams from Canada, Oregon, and Washington Washington commonly r ..., baseball team * ''Cowlitz'' (HBC vessel), see Hudson's Bay Company vessels {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chesapeake Bay Bridge-Tunnel
Chesapeake often refers to: *Chesapeake people, a Native American tribe also known as the Chesepian * The Chesapeake, a.k.a. Chesapeake Bay *Delmarva Peninsula, also known as the Chesapeake Peninsula Chesapeake may also refer to: Populated places In Virginia * Chesapeake, Virginia, city * Chesapeake City, a.k.a. Phoebus, Virginia * Chesapeake, Northampton County, Virginia, unincorporated community * Chesapeake colony, a.k.a. Jamestown, Virginia In other U.S. states *Chesapeake, Indiana, defunct *Chesapeake, Missouri *Chesapeake, Ohio * Chesapeake, Tennessee, a neighborhood of Nashville *Chesapeake, West Virginia Schools * Chesapeake High School, Anne Arundel County, Maryland * Chesapeake High School, Baltimore, Maryland * Chesapeake College, public community college based in Wye Mills, Maryland Ships * United States lightship ''Chesapeake'' (LV-116), a lightvessel * USS ''Chesapeake'' (1799), an American frigate captured by HMS ''Shannon'' in 1813 * USS ''Patapsco'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
