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Saint Croix–Vanceboro Bridge
The Saint Croix–Vanceboro Bridge is an international bridge, which connects the communities of Saint Croix, New Brunswick in Canada and Vanceboro, Maine in the United States, across the St. Croix River. The bridge consists of three reinforced concrete slab spans for a total length of , which carries a two lane roadway across the river. The bridge was constructed in 1927 as a concrete T-beam structure, and opened in 1928. The original bridge was replaced with the current deck in 1997. Transport Canada estimated the bridge's traffic at 66,635 vehicles annually in 2006. Border crossing The Vanceboro - St. Croix Border Crossing connects the towns of Vanceboro, Maine and Saint Croix, New Brunswick on the Canada–United States border The border between Canada and the United States is the longest international border in the world. The terrestrial boundary (including boundaries in the Great Lakes, Atlantic, and Pacific coasts) is long. The land border has two sections: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deck 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, 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 strength to maintain its own shape, and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reinforced Concrete
Reinforced concrete (RC), also called reinforced cement concrete (RCC) and ferroconcrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel bars ( rebar) and is usually embedded passively in the concrete before the concrete sets. However, post-tensioning is also employed as a technique to reinforce the concrete. In terms of volume used annually, it is one of the most common engineering materials. In corrosion engineering terms, when designed correctly, the alkalinity of the concrete protects the steel rebar from corrosion. Description Reinforcing schemes are generally designed to resist tensile stresses in particular regions of the concrete that might cause unacceptable cracking and/or structural failure. Modern reinforced concrete can contain varied reinforcing materials made of ... [...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] |
Saint Croix, New Brunswick
St. Croix is a rural community in York County, New Brunswick, Canada. The community derives its name from the St. Croix River which flows along its western boundary; this river also forms the Canada–United States border and the community is opposite Vanceboro, Maine to the west. St. Croix is located 8 kilometres west of the village of McAdam. The western terminus of Highway 4 is at the border on the Saint Croix-Vanceboro Bridge over the St. Croix River, where it connects with the eastern terminus of Highway 6 in Maine. The New Brunswick Southern Railway crosses the river using the Saint Croix-Vanceboro Railway Bridge. The Canada Border Services Agency maintains a customs station in St. Croix immediately east of the bridge. History Railway history During the 1800s, St. Croix developed as an isolated lumbering settlement, however in the 1860s the community was selected for the crossing point for the European & North American Railway (Western Extension) which was con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vanceboro, Maine
Vanceboro is a town in Washington County, Maine, United States. The town was named after landowner William Vance. The main village in town is located at the eastern terminus of Maine State Route 6. Vanceboro is across the St. Croix River from St. Croix, New Brunswick, Canada, to which it is connected by the Saint Croix–Vanceboro Bridge. Vanceboro is also connected to St. Croix by the Saint Croix–Vanceboro Railway Bridge which is used by the New Brunswick Southern Railway. The population was 102 at the 2020 census. History Vanceboro was selected as the border crossing for the European and North American Railway (E&NA) between Bangor, Maine, and Saint John, New Brunswick, during surveys in the 1860s. This line was opened by U.S. President Ulysses S. Grant and Governor General of Canada Lord Lisgar during a ceremony at the border in October 1871. In 1882, the E&NA's rail line from Vanceboro to Bangor was leased by the Maine Central Railroad. In 1889, the MEC's rail lin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
T-beam
A T-beam (or tee beam), used in construction, is a load-bearing structure of reinforced concrete, wood or metal, with a -shaped cross section. The top of the -shaped cross section serves as a flange or compression member in resisting compressive stresses. The web (vertical section) of the beam below the compression flange serves to resist shear stress. When used for highway bridges the beam incorporates reinforcing bars in the bottom of the beam to resist the tensile stresses which occur during bending. The T-beam has a big disadvantage compared to an I-beam (with shape) because it has no bottom flange with which to deal with tensile forces. One way to make a T-beam more efficient structurally is to use an inverted T-beam with a floor slab or bridge deck joining the tops of the beams. Done properly, the slab acts as the compression flange. History A T-beam is a structural element able to withstand large loads by resistance in the beam or by internal reinforcements. In some r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transport Canada
Transport Canada (french: Transports Canada) is the department within the Government of Canada responsible for developing regulations, policies and services of road, rail, marine and air transportation in Canada. It is part of the Transportation, Infrastructure and Communities (TIC) portfolio. The current Minister of Transport is Omar Alghabra. Transport Canada is headquartered in Ottawa, Ontario. History The Department of Transport was created in 1935 by the government of William Lyon Mackenzie King in recognition of the changing transportation environment in Canada at the time. It merged three departments: the former Department of Railways and Canals, the Department of Marine, and the Civil Aviation Branch of the Department of National Defence (c. 1927 when it replaced the Air Board) under C. D. Howe, who would use the portfolio to rationalize the governance and provision of all forms of transportation (air, water and land). He created a National Harbours Board and Trans-C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada–United States Border
The border between Canada and the United States is the longest international border in the world. The terrestrial boundary (including boundaries in the Great Lakes, Atlantic, and Pacific coasts) is long. The land border has two sections: Canada's border with the contiguous United States to its south, and with the U.S. state of Alaska to its west. The bi-national International Boundary Commission deals with matters relating to marking and maintaining the boundary, and the International Joint Commission deals with issues concerning boundary waters. The agencies currently responsible for facilitating legal passage through the international boundary are the Canada Border Services Agency (CBSA) and U.S. Customs and Border Protection (CBP). History 18th century The Treaty of Paris of 1783 ended the American Revolutionary War between Great Britain and the United States. In the second article of the Treaty, the parties agreed on all boundaries of the United States, including, but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McAdam, New Brunswick
McAdam is a village located in the southwestern corner of York County, New Brunswick, Canada. The village covers and had a population of 1,151 as of 2016. An independent study was executed early 2018, and the results found that the population of McAdam had grown to 1,225. Turning the tide of a shrinking population, this is the first time the community's population grew since 1956. The area was first settled in the mid-to-late 19th century as a group of small lumber camps. The area further developed due to its advantageous location as an important railway junction between the main line of the Canadian Pacific Railway from the Maritime provinces to New England and central Canada and branch lines to St. Stephen, St. Andrews and Woodstock. The town was an important servicing stop for many passenger and freight trains, as well as military trains during the World Wars. A large railway station was built to accommodate travelers and a roundhouse and yard were located in the village. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Bridges In New Brunswick
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", ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 1928
A bridge is a structure built to Span (engineering), 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
