A cantilever spar cable-stayed bridge is a modern variation of the
cable-stayed bridge
A cable-stayed bridge has one or more ''towers'' (or ''pylons''), from which wire rope, cables support the bridge deck. A distinctive feature are the cables or wikt:stay#Etymology 3, stays, which run directly from the tower to the deck, norm ...
. This design has been pioneered by the
structural engineer
Structural engineers analyze, design, plan, and research List of structural elements, structural components and structural systems to achieve design goals and ensure the safety and comfort of users or occupants. Their work takes account mainly of ...
Santiago Calatrava
Santiago Calatrava Valls (born 28 July 1951) is a Spaniards, Spanish-Swiss people, Swiss architect, structural engineer, sculptor and painter, particularly known for his bridges supported by single leaning pylons, and his railway stations, stad ...
in 1992 with the
Puente del Alamillo in Seville, Spain. In two of his designs the force distribution does not depend solely upon the
cantilever
A cantilever is a rigid structural element that extends horizontally and is unsupported at one end. Typically it extends from a flat vertical surface such as a wall, to which it must be firmly attached. Like other structural elements, a cantilev ...
action of the
spar (pylon); the angle of the spar away from the bridge and the weight distribution in the spar serve to reduce the overturning forces applied to the footing of the spar. In contrast, in his swinging
Puente de la Mujer
The Puente de la Mujer ( Spanish for "Woman's Bridge") is a rotating footbridge for Dock 3 of the Puerto Madero commercial district of Buenos Aires, Argentina. It is of the cantilever spar cable-stayed bridge type and is also a swing bridge, bu ...
design (2002), the spar reaches toward the cable supported deck and is counterbalanced by a structural tail. In the
Assut de l'Or Bridge (2008), the curved backward pylon is back-stayed to concrete counterweights.
Of this type by Santiago Calatrava
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Puente del Alamillo, Seville, Spain, 1992 (backward cantilever)
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Trinity Bridge, Manchester, United Kingdom, 1995 (backward cantilever)
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Puente de la Mujer
The Puente de la Mujer ( Spanish for "Woman's Bridge") is a rotating footbridge for Dock 3 of the Puerto Madero commercial district of Buenos Aires, Argentina. It is of the cantilever spar cable-stayed bridge type and is also a swing bridge, bu ...
, Buenos Aires, Argentina, 2002 (forward cantilever with gate-swing opening)
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Sundial Bridge at Turtle Bay
The Sundial Bridge (also known as the Sundial Bridge at Turtle Bay) is a cantilever spar cable-stayed bridge for bicycles and pedestrians that spans the Sacramento River in Redding, California, United States and forms a large sundial. It was de ...
, Redding CA, USA, 2004 (backward cantilever with glass decking)
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Chords Bridge, Jerusalem, Israel, opened 2008,
light rail
Light rail (or light rail transit, abbreviated to LRT) is a form of passenger urban rail transit that uses rolling stock derived from tram technology National Conference of the Transportation Research Board while also having some features from ...
operative since 2011 (single-sided angled cantilever side-spar)
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Assut de l'Or Bridge, Valencia, Spain, opened 12 December 2008 (backward curved pylon, back-stayed cantilever)
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Samuel Beckett Bridge, Dublin, Ireland, opened 10 December 2009 (single-sided forward curved back-stayed pylon, evoking a harp)
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Ponte di San Francesco da Paola,
Cosenza
Cosenza (; Languages of Calabria#Northern Calabrian (Cosentian), Cosentian: ''Cusenza'', ) is a city located in Calabria, Italy. The city centre has a population of approximately 70,000, while the urban area counts more than 200,000 inhabitants. ...
, Italy, opened 26 January 2018 (backward pylon)
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Signature Bridge, New Delhi, India, opened 4 November 2018 (Asymmetrical cable stayed pylon bridge)
Others of this type
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Puente Atirantado (sometimes called ''Puente de la Unidad'' or ''Viaducto de la Unidad''), opened in 2003, is a cable-stayed bridge that crosses the
Río Santa Catarina and joins San Pedro Garza García with
Monterrey
Monterrey (, , abbreviated as MtY) is the capital and largest city of the northeastern Mexican state of Nuevo León. It is the ninth-largest city and the second largest metropolitan area, after Greater Mexico City. Located at the foothills of th ...
. Although impressive and elegant, its construction was highly controversial due to its cost, its design (very similar to the one by
Santiago Calatrava
Santiago Calatrava Valls (born 28 July 1951) is a Spaniards, Spanish-Swiss people, Swiss architect, structural engineer, sculptor and painter, particularly known for his bridges supported by single leaning pylons, and his railway stations, stad ...
), and the fact that the river it crosses is dry.
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Mariánský most – in
Ústí nad Labem
Ústí nad Labem (; ) is a city in the Czech Republic. It has about 91,000 inhabitants and is the capital of the Ústí nad Labem Region. It is a major industrial centre and, besides being an active river port, is an important railway junction.
...
,
Czech Republic
The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...
. (1998)
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Erasmusbrug – by Ben van Berkel, in
Rotterdam Netherlands.
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Signature Bridge, Delhi, India, opened 5 November 2018.(Unique design of cables in a combinations of radial and semi-harp arrangement)
File:Buenos Aires, the Woman's Bridge (123009).jpg, Puente de la Mujer
The Puente de la Mujer ( Spanish for "Woman's Bridge") is a rotating footbridge for Dock 3 of the Puerto Madero commercial district of Buenos Aires, Argentina. It is of the cantilever spar cable-stayed bridge type and is also a swing bridge, bu ...
, Puerto Madero
Puerto Madero, also known within the urban planning community as the Puerto Madero Waterfront, is a Barrios and Communes of Buenos Aires, ''barrio'' of Buenos Aires in the Buenos Aires Central Business District, Central Business District. Occup ...
(Argentina
Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...
)
File:Ágora, Ciudad de las Artes y las Ciencias, Valencia, España, 2014-06-29, DD 57.JPG, Assut de l'Or Bridge, Valencia, Spain
File:Ponte di San Francesco da Paola 1 - Cosenza.jpg, Ponte di San Francesco da Paola, Cosenza, Italy
File:Puenteatirantado001.JPG, El Puente Atirantado. Monterrey, Mexico
File:Samuel Beckett Bridge At Sunset Dublin Ireland (97037639).jpeg, Samuel Beckett Bridge, Dublin, Ireland
File:Ústí nad Labem - Střekov, Mariánský most, pohled z Mariánského vrchu obr01.jpg, Mariánský most, Ústí nad Labem, Czech Republic
See also
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Bridge
A bridge is a structure built to Span (engineering), span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the path underneath. It is constructed for the purpose of providing passage over the obstacle, whi ...
– A directory of bridge types
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Cable-stayed bridge
A cable-stayed bridge has one or more ''towers'' (or ''pylons''), from which wire rope, cables support the bridge deck. A distinctive feature are the cables or wikt:stay#Etymology 3, stays, which run directly from the tower to the deck, norm ...
– The ancestor of this type
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Side-spar cable-stayed bridge
A side-spar cable-stayed bridge may be an otherwise conventional cable-stayed bridge, but its cable support does ''not span the roadway'', and is instead cantilevered from one side. The Esplanade Riel illustrated is located in Winnipeg, Manitob ...
– A related type
References
Bridges by structural type
{{Bridge-type-stub