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Port Deposit Bridge
The Port Deposit Bridge (also known as the Susquehanna River Bridge or Rock Run Toll Bridge) was the earliest bridge crossing of the Susquehanna River below Columbia, Pennsylvania, providing the first reliable link between the northern and southern United States. The bridge was also the fifth and last of Theodore Burr's Susquehanna crossings. The wooden covered bridge was constructed just north of Port Deposit, Maryland, between 1817 and 1818 and lasted until 1857. It was built and operated by the Susquehanna Bridge and Bank Company. History The site for the bridge was surveyed in 1813. The bridge crossed from north of Port Deposit to just below Rock Run stream in Harford County. The bridge crossed Steel, Roberts and Wood Islands. Construction of the bridge was started in 1817. The bridge was constructed by Theodore Burr, who had just completed work on four Susquehanna bridges in Pennsylvania. The bridge design used his Burr arch truss. "This ultimate achievement of Bur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Susquehanna River
The Susquehanna River (; Lenape: Siskëwahane) is a major river located in the Mid-Atlantic region of the United States, overlapping between the lower Northeast and the Upland South. At long, it is the longest river on the East Coast of the United States. By watershed area, it is the 16th-largest river in the United States,Susquehanna River Trail Pennsylvania Fish and Boat Commission, accessed March 25, 2010.Susquehanna River , Green Works Radio, accessed March 25, 2010. and also the longest river in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Susquehanna State Park (Maryland)
Susquehanna State Park is a public recreation area located on the banks of the lower Susquehanna River north of the city of Havre de Grace, Maryland. The state park's main area is on the west bank of the river; the park also manages land on the river islands and east bank. The park offers fishing, boating, camping, and trails for hiking and equestrian use. It is managed as a complex with Rocks State Park and Palmer State Park by the Maryland Department of Natural Resources. History The park saw its genesis in 1958 when the former president of the Baltimore Museum of Art, J. Gilman D’Arcy Paul, offered to donate 300 acres to the state. The state began its acquisition of land for the park in 1960. Features The park's Rock Run Historical Area includes: the Rock Run Grist Mill; the 1804 Carter-Archer Mansion, which was once the home of mill owner John Archer; remnants of the Susquehanna and Tidewater Canal; and the restored Jersey Toll House, where fees were collected for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Former Toll Bridges In Maryland
A former is an object, such as a template, gauge or cutting die, which is used to form something such as a boat's hull. Typically, a former gives shape to a structure that may have complex curvature. A former may become an integral part of the finished structure, as in an aircraft fuselage, or it may be removable, being using in the construction process and then discarded or re-used. Aircraft formers Formers are used in the construction of aircraft fuselage, of which a typical fuselage has a series from the nose to the empennage, typically perpendicular to the longitudinal axis of the aircraft. The primary purpose of formers is to establish the shape of the fuselage and reduce the column length of stringers to prevent instability. Formers are typically attached to longerons, which support the skin of the aircraft. The "former-and-longeron" technique (also called stations and stringers) was adopted from boat construction, and was typical of light aircraft built until the ad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridges 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wooden Bridges In Maryland
Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or it is defined more broadly to include the same type of tissue elsewhere such as in the roots of trees or shrubs. In a living tree it performs a support function, enabling woody plants to grow large or to stand up by themselves. It also conveys water and nutrients between the leaves, other growing tissues, and the roots. Wood may also refer to other plant materials with comparable properties, and to material engineered from wood, or woodchips or fiber. Wood has been used for thousands of years for fuel, as a construction material, for making tools and weapons, furniture and paper. More recently it emerged as a feedstock for the production ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 1818
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 Over The Susquehanna River
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] |
Covered Bridges In Maryland
Cover or covers may refer to: Packaging * Another name for a lid * Cover (philately), generic term for envelope or package * Album cover, the front of the packaging * Book cover or magazine cover ** Book design ** Back cover copy, part of copywriting * CD and DVD cover, CD and DVD packaging * Smartphone cover, a mobile phone accessory that protects a mobile phone People * Cover (surname) Arts, entertainment, and media Music Albums ;Cover * ''Cover'' (Tom Verlaine album), 1984 * ''Cover'' (Joan as Policewoman album), 2009 ;Covered * ''Covered'' (Cold Chisel album), 2011 * ''Covered'' (Macy Gray album), 2012 * ''Covered'' (Robert Glasper album), 2015 ;Covers * ''Covers'' (Beni album), 2012 * ''Covers'' (Regine Velasquez album), 2004 * ''Covers'' (Placebo album), 2003 * ''Covers'' (Show of Hands album), 2000 * ''Covers'' (James Taylor album), 2008 * ''Covers'' (Fayray album), 2005 * ''Covers'' (Deftones album), 2011 * ''Covers'' (Cat Power album), 2022 * ''Cove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Crossings Of The Susquehanna River
List of Susquehanna River crossings proceeding upstream from the river mouth at the Chesapeake Bay in Maryland, United States, generally northward through Pennsylvania toward the main branch headwaters in New York. The West Branch crossings are listed afterward. This list includes active road, railroad, foot, and trail bridges, dams, fords, ferries, and historic crossings. Presently it does not include historic ferry crossings. Railroad lines are generally as shown on the USGS topographic maps, which may not have been updated to reflect the creation of Conrail in the 1970s, which absorbed many lines in this area. Main Branch Main Branch crossings are listed from the mouth of the river in the Chesapeake Bay up to the source at Otsego Lake in Cooperstown, New York. In a geological sense, the Chesapeake Bay is just the ria, submerged valley, of the Susquehanna River. In that sense the Chesapeake Bay Bridge Tunnel and the Chesapeake Bay Bridge crossings precede those in the conve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conowingo Bridge
Several incarnations of the Conowingo Bridge crossed the Susquehanna River at the original location of Conowingo, Maryland, United States, about two miles upstream of the Conowingo Dam, which replaced it. History The original Conowingo Bridge was a seven-span, , covered bridge built between 1818 and 1820 by Louis Wernwag, who also worked on the Rock Run Bridge. (Another source lists 1844.) That bridge was destroyed, in 1846 or 1847, by a flood. A new wooden covered bridge opened in 1859. This crossing was an important link between Maryland and northern states in the 19th century. During the American Civil War it was guarded on its southern approach and some of the bridge decking removed to prevent surreptitious crossing. On June 6, 1907, "firebugs" set fire to the 1859 bridge using kerosene. About three-quarters of a mile of it burned. The bridge was rebuilt as a steel structure in 1909. In 1911 the state of Maryland bought the bridge and ended the tolls. With the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Deposit, Maryland
Port Deposit is a town in Cecil County, Maryland, United States. It is located on the east bank of the Susquehanna River near its discharge into the Chesapeake Bay. The population was 653 at the 2010 census. Geography Port Deposit is located at (39.610915, -76.100172). According to the United States Census Bureau, the town has a total area of , of which is land and is water. It is the westernmost incorporated municipality in Cecil County, as well as in the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area, better known as the Delaware Valley. History Early history The first recorded European visits to the area were the 1608 and 1609 expeditions led by Captain John Smith up the Chesapeake Bay. He sailed about up the Susquehanna River to the present location of Port Deposit, and gave the name of "Smythe Fayles" to the rapids just above the future town. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burr Arch Truss
The Burr Arch Truss—or, simply, Burr Truss or Burr Arch—is a combination of an arch and a ''multiple kingpost'' truss design. It was invented in 1804 by Theodore Burr, patented on April 3, 1817, and used in bridges, usually covered bridges. Design The design principle behind the Burr arch truss is that the arch should be capable of bearing the entire load on the bridge while the truss keeps the bridge rigid. Even though the kingpost truss alone is capable of bearing a load, this was done because it is impossible to evenly balance a dynamic load crossing the bridge between the two parts. The opposite view is also held, based on computer models, that the truss performs the majority of the load bearing and the arch provides the stability. Either way, the combination of the arch and the truss provides a more stable bridge capable of supporting greater weight than either the arch or truss alone. Gallery The U.S. state of Indiana has a large collection of Burr Truss bridge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
