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84-580: Blackfriars Bridge in London, Ontario , Canada is a wrought iron bowstring arch through truss bridge , crossing the North Thames River . The bridge was constructed in 1875 and carries single-lane vehicles, bicycles and pedestrians from Blackfriars Street to Ridout Street North. At 216 feet (66 meters) it is the longest working span of that kind in North America. The Blackfriars Bridge

168-485: A July average of 21.0 °C (69.8 °F), and temperatures above 30 °C (86 °F) occur on average 11 days per year. In 2016, however, temperatures rose above this temperature on more than 35 days, and in 2018, four heatwaves led to a peak humidex of 46 °C (115 °F). The city is affected by frequent thunderstorms due to hot, humid summer weather, as well as the convergence of breezes originating from Lake Huron and Lake Erie . The same convergence zone

252-539: A centre of strong Tory support during the Upper Canada Rebellion of 1837, notwithstanding a brief rebellion led by Charles Duncombe . Consequently, the British government located its Ontario peninsular garrison there in 1838, increasing its population with soldiers and their dependents, and the business support populations they required. London was incorporated as a town in 1840. On 13 April 1845,

336-461: A distinct sense of place . In 1897, London West was annexed to London. London's eastern suburb, London East, was (and remains) an industrial centre, which also incorporated in 1874. It was founded as Lilley's Corners by Charles Lilley in 1854. Oil was discovered in the Petrolia area and Lilley's Corners was chosen as the refining site because it was close to the railroad. The Ontario Car Works,

420-421: A fire destroyed much of London, which was then largely constructed of wooden buildings. One of the first casualties was the town's only fire engine. The fire burned nearly 30 acres (12 ha) of land, destroying 150 buildings, before it burned itself out later that day. One fifth of London was destroyed in the province's first million-dollar fire. John Carling , Tory MP for London, gave three events to explain

504-770: A mixed use complex that blends retail, office, businesses, and education providers. Alongside Citi Cards Canada's offices, in November 2016, CBC announced plans to move its expanded operations into the building. There are many large Real Estate Development firms based in London which are active across Southwestern Ontario . These include Sifton Properties, Drewlo Holdings, Old Oak Properties, Tricar Developments, York Developments, Farhi Holdings and Westdell Developments. Combined, they own or operate over 300 million square feet of commercial and residential real estate . On 11 December 2009, Minister of State Gary Goodyear announced

588-495: A new $ 11-million cargo terminal at the London International Airport . Tied-arch bridges 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

672-464: A new hotel (Delta London Armouries, 1996) in its place, preserving the shell of the historic building. In the 1950s, two reserve battalions amalgamated and became London and Oxford Rifles (3rd Battalion), The Royal Canadian Regiment . This unit continues to serve today as 4th Battalion, The Royal Canadian Regiment . The Regimental Headquarters of The Royal Canadian Regiment remains in London at Wolseley Barracks on Oxford Street. The barracks are home to

756-406: A number of gardens and conservatories. In the 2021 Census of Population conducted by Statistics Canada , London had a population of 422,324 living in 174,657 of its 186,409 total private dwellings, a change of 10% from its 2016 population of 383,822 . With a land area of 420.5 km (162.4 sq mi), it had a population density of 1,004.3/km (2,601.2/sq mi) in 2021. At

840-443: A number of musical and artistic exhibits and festivals, which contribute to its tourism industry, but its economic activity is centered on education , medical research , manufacturing , financial services , and information technology . London's university and hospitals are among its top ten employers. London lies at the junction of Highways 401 and 402 , connecting it to Toronto , Windsor , and Sarnia . These highways also make

924-496: A platform to advertise and sell their services to those looking for voiceover work. Other tech companies located in London include AutoData, Carfax Canada , HRDownloads, Mobials, Northern Commerce and Paystone which recently raised $ 100M. The London Life Insurance Company was founded there, as was Canada Trust (in 1864), Imperial Oil , GoodLife Fitness , and both the Labatt and Carling breweries. The Libro Financial Group

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1008-529: A single span, two tied-arches are placed in parallel alongside the deck, so the deck lies in between the arches. Axial tied-arch or single tied-arch bridges have at most one tied-arch per span that is usually centered in the middle of the bridge deck. An example for this is Hoge Brug in Maastricht. Since it has hinged hangers it might also classify as a Nielsen bridge who held a patent on tied-arch bridges with hinged hangers from 1926. Some designs tilt

1092-795: A subtribe of the Lenape or Delaware people), expelled from their homeland in Modern New Jersey and Eastern Pennsylvania after the creation of the United States . The Oneida Nation of the Thames , Chippewas of the Thames First Nation , and Munsee-Delaware Nation reserves are located south-west of the city. The current location of London was selected as the site of the future capital of Upper Canada in 1793 by Lieutenant-Governor John Graves Simcoe , who also named

1176-536: A tied-arch; however, the bowstring truss behaves as truss , not an arch . The visual distinction is a tied-arch bridge will not have substantial diagonal members between the vertical members. In a 1978 advisory issued by the Federal Highway Administration (FHWA), the FHWA noted that tied-arch bridges are susceptible to problems caused by poor welds at the connection between the arch rib and

1260-531: Is politically separate from Middlesex County , though it remains the county seat. London and the Thames were named after the English city and river in 1793 by John Graves Simcoe , who proposed the site for the capital city of Upper Canada . The first European settlement was between 1801 and 1804 by Peter Hagerman. The village was founded in 1826 and incorporated in 1855. Since then, London has grown to be

1344-613: Is a bridge with incomparable beauty and appeal. Among the rarest and oldest bridges in Canada is this breathtaking iron bowstring truss. Keystone Columns form the top chord. A sidewalk on the south side appears to be original. It has been designated a historic structure under Part IV of the Ontario Heritage Act . The bridge was closed to all traffic on 13 May 2013, for the purpose of extensive infrastructural assessment and repair, with plans to re-open it by August 2013. Due to

1428-655: Is also the site of the Flame of Hope, which is intended to burn until a cure for diabetes is discovered. London's role as a military centre continued into the 20th century during the two World Wars, serving as the administrative centre for the Western Ontario district. In 1905, the London Armoury was built and housed the First Hussars until 1975. A private investor purchased the historic site and built

1512-591: Is currently the eleventh-largest urban area in Canada , eleventh-largest census metropolitan area in Canada , and the sixth-largest city in Ontario. On Victoria Day , 24 May 1881, the stern-wheeler ferry SS Victoria capsized in the Thames River close to Cove Bridge in West London. Approximately 200 passengers drowned in the shallow river, making it one of the worst disasters in London's history, and

1596-637: Is dominated by medical research , financial services , manufacturing , and information technology . Much of the life sciences and biotechnology related research is conducted or supported by the University of Western Ontario (partly through the Robarts Research Institute ), which adds about C$ 1.5 billion to the London economy annually. Private companies in the industry like PolyAnalytik , Alimentiv , KGK Sciences and Sernova are also based in London. The largest employer in London

1680-634: Is in a hosiery factory, and Arcane Digital moved into a 1930s industrial building in 2015. The Historic London Roundhouse, a steam locomotive repair shop built in 1887, is now home to Royal LePage Triland Realty, rTraction and more. Its redesign, which opened in 2015, won the 2015 Paul Oberman Award for Adaptive Re-Use from the Architectural Conservancy of Ontario. London is also home to StarTech.com , Diply , video game companies like Digital Extremes , Big Blue Bubble and Big Viking Games, and Voices.com , which provides voiceover artists

1764-513: Is now dubbed " The Victoria Day Disaster ". At the time, London's population was relatively low; therefore it was hard to find a person in the city who did not have a family member affected by the tragedy. Two years later, on 12 July 1883, the first of the two most devastating floods in London's history killed 17 people. The second major flood, on 26 April 1937, destroyed more than a thousand houses across London, and caused over $ 50 million in damages, particularly in West London. On 3 January 1898,

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1848-455: Is responsible for spawning funnel clouds and the occasional tornado. Spring and autumn in between are not long, and winters are cold but with frequent thaws. Annual precipitation averages 1,011.5 mm (39.82 in). Its winter snowfall totals are heavy, averaging about 194 cm (76 in) per year, although the localized nature of snow squalls means the total can vary widely from year to year as do accumulations over different areas of

1932-655: Is the Fremont Bridge in Portland, Oregon which is the second-longest tied-arch bridge in the world and also classifies as a through arch bridge . The Chaotianmen Bridge in Chongqing is a tied-arch, through arch and a truss arch bridge . Contrarily, the Hart Bridge uses a cantilevered trussed arch, it is self-anchored , but its arch is non-tied. In particular the bridge deck is suspended, but does not tie

2016-665: Is the London Health Sciences Centre , which employs 10,555 people. Since the economic crisis of 2009, the city has transitioned to become a technology hub with a focus on the Digital Creative sector. As of 2016, London is home to 300 technology companies that employ 3% of the city's labour force. Many of these companies have moved into former factories and industrial spaces in and around the downtown core, and have renovated them as modern offices. For example, Info-Tech Research Group 's London office

2100-481: Is the northernmost and oldest of a company of eight bridges of different ages, constructions and uses, surrounding the confluence of the North Thames and Thames rivers, which fixes the historic center of London. The significance of the bridge is due to the age, type, material and rarity. According to bridge historian Nathan Holth, Bowstring bridges are one of the rarest types of truss bridges , and most date in

2184-465: Is the oldest wrought iron bridge in North America still used for vehicular traffic. The construction of the bridge is made in a bowstring truss design that uses pin connections and lattice girders. The deck surface is presently of renewable planking: a double file of approximately 1,500 8 ft 2'x4' each, on edge, upon a framework of nine longitudinally laid stringers of 1 ft iron I-beams, topped with bolted-on wooden cladding, whose ends rest on

2268-561: The Blackfriars Street Bridge , was constructed. It replaced a succession of flood-failed wooden structures that had provided the city's only northern road crossing of the river. A rare example of a wrought iron bowstring arch through truss bridge , the Blackfriars remains open to pedestrian and bicycle traffic, though it was temporarily closed indefinitely to vehicular traffic due to various structural problems and

2352-677: The Detroit-Windsor , Port Huron-Sarnia , and Niagara Falls border crossings with the United States easily accessible. The city also has railway stations and bus stations and is home to the London International Airport . A series of archaeological sites throughout southwestern Ontario , named for the Parkhill Complex excavated near Parkhill , indicate the presence of Paleo-Indians in the area dating back approximately 11,000 years. Just prior to European settlement,

2436-604: The Fremont Bridge in Portland, Oregon and the first "computer-designed" bridge of this type, the Fort Pitt Bridge in Pittsburgh, Pennsylvania . Both the tied-arch bridge and the self-anchored suspension bridge place only vertical loads on the anchorage, and so are suitable where large horizontal forces are difficult to anchor. Some tied-arch bridges only tie a segment of the main arch directly and prolong

2520-557: The Sifton Bog , as well as some of the most agriculturally productive areas of farmland in Ontario. The Thames River dominates London's geography. The North and South branches of the Thames River meet at the centre of the city, a location known as "The Forks" or "The Fork of the Thames". The North Thames runs through the man-made Fanshawe Lake in northeast London. Fanshawe Lake was created by Fanshawe Dam, constructed to protect

2604-741: The census metropolitan area (CMA) level in the 2021 census, the London CMA had a population of 543,551 living in 222,239 of its 235,522 total private dwellings, a change of 10% from its 2016 population of 494,069 . With a land area of 2,661.48 km (1,027.60 sq mi), it had a population density of 204.2/km (529.0/sq mi) in 2021. As per the 2021 census, the most common ethnic or cultural origins in London are English (21.9%), Scottish (17.4%), Irish (16.8%), Canadian (12.1%), German (9.3%), French (6.6%), Dutch (5.0%), Italian (4.5%), British Isles (4.3%), Indian (3.7%), Polish (3.6%), and Chinese (3.0%). Indigenous people made up 2.6% of

Blackfriars Street Bridge - Misplaced Pages Continue

2688-399: The 1870s. They fell out of favor due to the limited weight they could support. Any bowstring truss bridge that survives today is a miracle. Truss bridges are always intricate structures, but bowstring trusses are even more so. There [are] lattice , v-lacing, and members all over. This large amount of complexity is balanced by the simple, graceful appearance of the arched top chord. The result

2772-488: The 1900–1930 era. The London Technical and Commercial High School came under heavy attack from the city's social and business elite, which saw the school as a threat to the budget of the city's only academic high school, London Collegiate Institute. The Banting House , a National Historic Site of Canada, is where Frederick Banting developed the ideas that led to the discovery of insulin . Banting lived and practiced in London for ten months, from July 1920 to May 1921. London

2856-453: The First Hussars militia regiment as well. London annexed many of the surrounding communities in 1961, including Byron and Masonville, adding 60,000 people and more than doubling its area. After this amalgamation, suburban growth accelerated as London grew outward in all directions, creating expansive new subdivisions such as Westmount, Oakridge, Whitehills, Pond Mills, White Oaks and Stoneybrook. On 1 January 1993, London annexed nearly

2940-623: The Great Western Gasworks and the London Street Railroad all had their headquarters in Lilley's Corners. In 1872, Lilley's Corners became a village. It was annexed to London in 1885. Attaining the status of town in 1881, it continued as a separate municipality until concerns over expensive waterworks and other fiscal problems led to amalgamation in 1885. The southern suburb of London, including Wortley Village,

3024-520: The London area was the site of several Attawandaron , Odawa , and Ojibwe villages. The Lawson Site in northwest London is an archaeological excavation and partial reconstruction of an approximately 500-year-old Neutral Iroquoian village, estimated to have been home to 2,000 people. These groups were driven out by the Iroquois by c.  1654 in the Beaver Wars . The Iroquois abandoned

3108-463: The Province of Ontario for maintaining its old iron bridges. Regarding the nearby, larger pony-truss Kensington Bridge he praises the city for "keeping the Thames River looking wild and natural," even near its center, with the look of "a rural bridge in an urban environment, which further enhances the beauty of the bridge", a remark that would apply as well to the Blackfriars. With recent improvement of

3192-590: The School of Military Instruction in London. Established by Militia General Order in 1865, the school enabled Officers of Militia or Candidates for Commission or promotion in the Militia to learn Military duties, drill and discipline, to command a Company at Battalion Drill, to Drill a Company at Company Drill, the internal economy of a Company and the duties of a Company's Officer. The school was not retained at Confederation, in 1867. In 1875, London's first iron bridge,

3276-720: The Thames (then known as the Escunnisepe ) to Upper Canada. London was part of the Talbot Settlement , named for Colonel Thomas Talbot , the chief administrator of the area, who oversaw the land surveying and built the first government buildings for the administration of the western Ontario peninsular region. Together with the rest of southwestern Ontario, the village benefited from Talbot's provisions not only for building and maintaining roads but also for assignment of access priorities to main routes to productive land. Crown and clergy reserves then received preference in

3360-698: 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 of horizontal forces at the abutments allows tied-arch bridges to be constructed with less robust foundations; thus they can be situated atop elevated piers or in areas of unstable soil . In addition, since they do not depend on horizontal compression forces for their integrity, tied-arch bridges can be prefabricated offsite, and subsequently floated, hauled or lifted into place. Notable bridges of this type include

3444-692: The arch ends. Tied arch bridges may consist of successively lined up tied arches in places where a single span is not sufficient. An example for this is the Godavari Arch Bridge in Rajahmundry, India. It has four separate supports on each pier and carries the South Central Railway Line of India. It was designed for 250 km/h rail services. Like for multi-span continuous beam bridges the tying chord continually spans over all piers. The arches feet coincide (fuse) at

Blackfriars Street Bridge - Misplaced Pages Continue

3528-413: The arches outward or inward with respect to the axis running along the bridge deck. In analogy to twin bridges , two tied arch bridges erected side by side to increase traffic capacity, but structurally independent, may be referred to by tied arch twin bridges . Each in return may use a single- or multi-span, discrete or continuous tied-arch design. A bowstring truss bridge is similar in appearance to

3612-413: The arches. Contrarily each abutment on the riverbanks supports a single arch end only, in the middle of the deck. The tying chord(s) consist of a composite deck structure. Four post tensioned coil steel cables, two to each side of the walking deck, are locked in place by orthogonally run steel beams every 7.5 meters. The hangers are joined to each of these beams between each cable pair. Since the beams extend

3696-402: The beauty and appeal of the bridge is its appearance of floating (from many profile views up and downstream on both banks of the gently winding river). That is owed to its strung-bow shape and its light placement at its very tips upon modest granite abutments — a feature rare among more modern tied-arch bridges . These abutments bear the passive vertical load of the open structure itself. However,

3780-463: The bridge piers. A good visual indication are shared supports at the piers. Dynamic loads are distributed between spans. This type may be combined with the shouldered tied-arch design discussed above. An example for this is Dashengguan Bridge in Nanjing, China. Its two main arches are shouldered by short auxiliary arches. It is both, a (rigid) tied-arch and a cantilevered trussed arch design. Because

3864-521: The bridge's west is the lower ground of the previous town of Petersville, protected by an extensive dike embankment, due to a history of flooding; to its east a terrace rises above the North Thames River to central London. The river there is bordered on both sides by extensive bicycle and walking paths, and the Bridge is well framed by a variety of second-growth trees. The Blackfriars Bridge

3948-431: The building's construction were fined $ 400,000, with The Ministry of Labour, Immigration, Training and Skills Development declaring the companies had failed to "provide proper information, instruction and supervision, specifically on the use of proper concrete measuring techniques on the project." The area was formed during the retreat of the glaciers during the last ice age , which produced areas of marshland , notably

4032-523: The casualties of the economic crisis in 2011, the site will soon be home to a major Amazon distribution center employing 2,000 workers by 2023. London's city centre mall was first opened in 1960 as Wellington Square with 400,000 sq ft (37,000 m ) of leasable area, with Eaton's and Woolworths as anchors. From 1986 to 1989, Campeau expanded Wellington Square into Galleria London with 1,000,000 sq ft (93,000 m ) of leasable area and 200 stores including The Bay and Eaton's. However,

4116-623: The city. GDLS has a 14-year $ 15-billion deal to supply light armored vehicles and employs over 2,400 people. McCormick Canada , formerly Club House Foods, was founded in 1883 and currently employs more than 600 Londoners. A portion of the city's population work in factories outside of the city limits, including the General Motors automotive plant CAMI , and a Toyota plant in Woodstock . A Ford plant in Talbotville became one of

4200-439: The city. Some of the snow accumulation comes from lake effect snow and snow squalls originating from Lake Huron, some 60 km (37 mi) to the northwest, which occurs when strong, cold winds blow from that direction. From 5 December 2010, to 9 December 2010, London experienced record snowfall when up to 2 m (79 in) of snow fell in parts of the city. Schools and businesses were closed for three days and bus service

4284-440: The deck. Although originally two-lane, due to the weight and frequency of modern traffic, the Blackfriars is at present two-way but single-lane. Because of damage to the wooden deck surface and to the iron structure, it has been closed to automobile traffic since 2013. The Bridge is sited at the east end of a short Blackfriars Street, which turns sharply south and up a slight grade, as the downtown Ridout Street, upon crossing it. To

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4368-533: The development of London in a 1901 speech: the location of the court and administration in London in 1826, the arrival of the military garrison in 1838, and the arrival of the railway in 1853. The population in 1846 was 3,500. Brick buildings included a jail and court house, and large barracks. London had a fire company, a theatre, a large Gothic church, nine other churches or chapels, and two market buildings. The buildings that were destroyed by fire in 1845 were mostly rebuilt by 1846. Connection with other communities

4452-526: The downriver areas from the catastrophic flooding which affected the city in 1883 and 1937. London has a humid continental climate ( Köppen Dfb ), with modestly warm summers, and cold and cloudy winters with frequent snow. Because of its location in the continent, London experiences large seasonal contrast, tempered to a point by the surrounding Great Lakes . The proximity of the lakes also ensure abundant cloud cover, particularly in late Fall and Winter. The summers are usually warm to hot and humid, with

4536-542: The downstream rivers. Financing for this project came from the federal, provincial, and municipal governments. Other natural disasters include a 1984 tornado that led to damage on several streets in the White Oaks area of South London. On 11 December 2020, a partially-constructed apartment building just off of Wonderland Road in southwest London collapsed, killing two people and injuring at least four others. In January 2024, both Oxford County companies involved in

4620-457: The early 1990s recession, following by the bankruptcy of Eaton's in 1999 and then the departure of The Bay in 2000 resulted in only 20 stores left by 2001. Galleria London then began seeking non-retail tenants, becoming the home for London's central library branch, and satellite campuses for both Fanshawe College and Western University . The complex was purchased and renamed to Citi Plaza by Citigroup in 2009. Citi Plaza has been redeveloped as

4704-491: The entire township of Westminster , a large, primarily rural municipality directly south of the city, including the police village of Lambeth . With this massive annexation, which also included part of London township , London almost doubled in area again, adding several thousand more residents. In the present day, London stretches south to the boundary with Elgin County , north and east to Fanshawe Lake , north and west to

4788-558: The extent and cost (approximately $ 3M) of repairs required, the closure was extended indefinitely, and subsequently re-opened to pedestrian traffic in December 2013. Access was restricted to a pedestrian pathway by using temporary fencing, pending an environmental assessment to determine whether it will be feasible to re-open the bridge to vehicular traffic. It was re-opened on December 1, 2018. After being closed again to cars in April 2020, it

4872-509: The floor of the assembly hall at London City Hall collapsed, killing 23 people and leaving more than 70 injured. Testimony at a coroner's inquest described the wooden beam under the floor as unsound, with knots and other defects reducing its strength by one fifth to one third. After repeated floods, the Upper Thames River Conservation Authority in 1953 built Fanshawe Dam on the North Thames to control

4956-500: The largest southwestern Ontario municipality and Canada's 11th largest metropolitan area , having annexed many of the smaller communities that surround it. London is a regional centre of healthcare and education, being home to the University of Western Ontario (which brands itself "Western University"), Fanshawe College , and three major hospitals: Victoria Hospital , University Hospital and St. Joseph's Hospital. The city hosts

5040-660: The major banks. Industries included several tanneries, oil refineries and foundries, four flour mills, the Labatt Brewing Company and the Carling brewery in addition to other manufacturing companies such as EMCO Wheaton . Both the Great Western and Grand Trunk railways had stops here. Several insurance companies also had offices in the city. The Crystal Palace Barracks , an octagonal brick building with eight doors and forty-eight windows built in 1861,

5124-493: The more inclusive "London West", it remained a separate municipality until ratepayers voted for amalgamation with London in 1897, largely due to repeated flooding. The most serious flood was in July 1883, which resulted in serious loss of life and property devaluation. This area retains much original and attractively maintained 19th-century tradespeople's and workers' housing, including Georgian cottages as well as larger houses, and

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5208-561: The official languages, 98% of the population reported knowing English and 7.2% French. In 2021, 48.8% of the population identified as Christian , with Catholics (21.5%) making up the largest denomination, followed by United Church (4.7%), Anglican (4.4%), Orthodox (2.0%), Presbyterian (1.5%), Baptist (1.4%), and other denominations. 37.2% of the population reported no religious affiliation. Others identified as Muslim (8.4%), Hindu (2.1%), Sikh (1.0%), Buddhist (0.9%), Jewish (0.5%), and with other religions. London's economy

5292-655: The population, with most being First Nations (1.9%). Ethnocultural backgrounds in the city included European (68.7%), South Asian (6.5%), Arab (5.3%), Black (4.2%), Latin American (3.0%), Chinese (2.9%), Southeast Asian (1.4%), Filipino (1.4%), West Asian (1.3%), and Korean (1.0%). The 2021 census found English to be the mother tongue of 71.1% of the population. This was followed by Arabic (3.7%), Spanish (2.7%), Mandarin (1.6%), Portuguese (1.3%), French (1.1%), Polish (1.1%), Korean (0.8%), Punjabi (0.8%), Malayalam (0.8%), and Urdu (0.7%). Of

5376-657: The region some 50 years later, driven out by the Ojibwa. An Anishinaabeg community site was described as located near the forks of Thames River (Anishinaabe language: Eshkani-ziibi, "Antler River") in c.  1690 and was referred to as Pahkatequayang ("Baketigweyaang":"At the River Fork" (lit: at where the by-stream is)). Later, in the early 19th century, the Munsee-Delaware Nation (the Munsee are

5460-602: The rest of Ontario. In 1814, the Battle of Longwoods took place during the War of 1812 in what is now Southwest Middlesex , near London. The retreating British Army were staying at Hungerford Hill when they were attacked by the Kentucky Mounted Riflemen. In 1827, a settlement was started Bryon when Cyrenius Hall built a gristmill. In 1832, the new settlement suffered an outbreak of cholera . London proved

5544-606: The rivers, wild nature seems to confirm the point. (See, below, resident Great blue heron in winter.) London, Ontario London is a city in southwestern Ontario , Canada, along the Quebec City–Windsor Corridor . The city had a population of 422,324 according to the 2021 Canadian census . London is at the confluence of the Thames River and North Thames River, approximately 200 km (120 mi) from both Toronto and Detroit ; and about 230 km (140 mi) from Buffalo, New York . The city of London

5628-467: The strengthened chord to tie to the top ends of auxiliary (half-)arches . The latter usually support the deck from below and join their bottom feet to those of the main arch(es). The supporting piers at this point may be slender, because the outward-directed horizontal forces of main and auxiliary arch ends counterbalance. The whole structure is self-anchored . Like the simple case it exclusively places vertical loads on all ground-bound supports. An example

5712-639: The township of Middlesex Centre (the nearest developed areas of it being Arva to the north and Komoka to the west) and east to Nilestown and Dorchester. The 1993 annexation, made London one of the largest urban municipalities in Ontario. Intense commercial and residential development is presently occurring in the southwest and northwest areas of the city. Opponents of this development cite urban sprawl , destruction of rare Carolinian zone forest and farm lands, replacement of distinctive regions by generic malls, and standard transportation and pollution concerns as major issues facing London. The City of London

5796-477: The traffic runs through the structural envelope, it is also a through arch bridge. Guandu Bridge in New Taipei, Taiwan is a non-trussed example with three main arches augmented by two auxiliary arch segments at the bridge portals. The Infinity Bridge uses two arches of different height and span length that both bifurcate before their apex. Above its single, middle-displaced river pier the deck lies between

5880-399: The two abutments. Attached beneath these are 15 transverse floor-beams, from which vertical lattice pillars, under tension, translate the live thrusts of traffic to the bowed upper chord, which transfers this back as tension along the bottom-chord "string" of the bow. This bottom chord consists of two sets of four 10 cm x 3 cm wrought-iron eyebars, running along, outside, both sides of

5964-551: The university, and was not annexed until 1961. Broughdale was named after Reverend Charles C. Brough, the Anglican Archdeacon of London who settled there in 1854. Broughdale started to grow when it was connected to the London Street Railroad in 1901, leading to a real estate bubble. A post office was opened in Broughdale on 1 July 1904 with Charles Watlers as postmaster. Broughdale was initially named Brough, but

6048-469: The varying 'live' thrust forces of traffic downward on its deck are translated by the bowed chord above into horizontal tensions along the longitudinal iron eyebars of the 'string' or bottom chord running parallel to the deck. The Blackfriars Bridge has figured in various artistic works, visual and literary, including a series of stained glass windows by Ted Goodden. Nathan Holth praises the City of London and

6132-469: The village which was founded in 1826. Originally, Simcoe had proposed to call it Georgiana , in honour of George III , the reigning monarch at that time. It did not become the capital Simcoe envisioned. Rather, it was an administrative seat for the area west of the actual capital, York (now Toronto). The London Township Treaty of 1796 with the Chippewa ceded the original town site on the north bank of

6216-474: The width of the post-tensioned concrete deck, the tensing cable pairs remain visible. A close-up of the river pier shows that the structural dead load is tied per span: The larger arch span uses thicker tensing cables and the reflex segments are not suspended from, but supported by steel beams, essentially completing the arches at the river pier. However, for dynamic and non-uniform loads the visually defining arch continuations must not be neglected. Usually, for

6300-429: Was by road, using mainly stagecoaches that ran daily. A weekly newspaper was published and mail was received daily by the post office. Two villages named Petersville and Kensington once stood where downtown London now is. Petersville was founded by Samuel Peters in 1853. Kensington was founded around about 1878. Petersville and Kensigton were amalgamated on 4 March 1881 to form London West. On 1 January 1855, London

6384-586: Was cancelled after the second day of snow. The highest temperature ever recorded in London was 41.1 °C (106 °F) on 6 August 1918. The lowest temperature ever recorded was −32.8 °C (−27 °F) on 9 February 1934. London has a number of parks. Victoria Park in downtown London is a major centre of community events, attracting an estimated 1 million visitors per year. Other major parks include Harris Park, Gibbons Park, Fanshawe Conservation Area ( Fanshawe Pioneer Village ), Springbank Park , White Oaks Park and Westminster Ponds. The city also maintains

6468-462: Was collectively known as "London South". Never incorporated, the South was annexed to the city in 1890, although Wortley Village still retains a distinct sense of place . The area started to be settled in the 1860s. In 1880, Polk's Directory called London South "a charming suburb of the City of London.". By contrast, the settlement at Broughdale on the city's north end had a clear identity, adjoined

6552-598: Was founded in London 1951 and is the second largest credit union in Ontario and employs over 600 people. Downtown London is also home to major satellite offices for each of the Big Five banks of Canada , particularly TD Bank which employees 2,000 people, and the digital challenger bank VersaBank is also headquartered in the city. The headquarters of the Canadian division of 3M are in London. General Dynamics Land Systems (GDLS) builds armoured personnel carriers in

6636-490: Was incorporated as a city (10,000 or more residents). In the 1860s, a sulphur spring was discovered at the forks of the Thames River while industrialists were drilling for oil . The springs became a popular destination for wealthy Ontarians, until the turn of the 20th century when a textile factory was built at the site, replacing the spa. Records from 1869 indicate a population of about 18,000 served by three newspapers, churches of all major denominations and offices of all

6720-482: Was manufactured by the Wrought Iron Bridge Company (WIBC) of Canton, Ohio , although erected by local London contractor Isaac Crouse. There is evidence for its being prototypical for a revised design by WIBC, incorporating a double-panel web. The bridge is the successor to a series of fixed, wooden structures at the site since 1831, which were damaged mainly by spring freshets of the river. It

6804-529: Was once again reopened to vehicular traffic 1 December 2018. The Blackfriars, amidst the river-distance between the Carling Brewery and the historic Tecumseh Park (including a major mill), linked London with its western suburb of Petersville, named for Squire Peters of Grosvenor Lodge. That community joined with the southern subdivision of Kensington in 1874, formally incorporating as the municipality of Petersville. Although it changed its name in 1880 to

6888-521: Was re-opened on November 8, 2021. In 2017, a $ 8.6-million plan was started, for a rebuild of the bridge. On November 27, 2017, the bridge was cut in half, and lifted to the banks of the Thames, for moving to an off site location for refurbishment. After one year of rehabilitation, the Blackfriars Bridge was reopened to pedestrians, motorists and cyclists immediately following a grand opening celebration on Saturday, December 1, 2018. Much of

6972-449: Was renamed Broughdale in 1906 because it sounded better. In 1924, the University of Western Ontario was founded in the former Broughdale. After the founding of the university, Broughdale became more like a city and less like a village. Broughdale was incorporated as a village in 1930. In 1961, Broughdale was annexed to London. Ivor F. Goodson and Ian R. Dowbiggin have explored the battle over vocational education in London, Ontario, in

7056-653: Was used for events such the Provincial Agricultural Fair of Canada West held in London that year. It was visited by Prince Arthur, Duke of Connaught and Strathearn , Governor-General John Young, 1st Baron Lisgar and Prime Minister John A. Macdonald . Long before the Royal Military College of Canada was established in 1876, there were proposals for military colleges in Canada. Staffed by British Regulars, adult male students underwent three-month-long military courses from 1865 at

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