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 cables support the bridge deck. A distinctive feature are the cables or stays, which run directly from the tower to the deck, normally forming a fan-like pattern ...

. This design has been pioneered by the structural engineer

Santiago Calatrava Santiago Calatrava Valls (born 28 July 1951) is a Spanish architect, structural engineer, sculptor and painter, particularly known for his bridges supported by single leaning pylons, and his railway stations, stadiums, and museums, whose sculp ...

in 1992 with the

Puente del Alamillo The Alamillo Bridge ( es, Puente del Alamillo) is a structure in Seville, Andalucia (Spain), which spans the Canal de Alfonso XIII, allowing access to La Cartuja, a peninsula located between the canal and the Guadalquivir River. The bridge was ...

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 supported at only 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 cant ...

action of the

spar SPAR, originally DESPAR, styled as DE SPAR, is a Dutch multinational that provides branding, supplies and support services for independently owned and operated food retail stores. It was founded in the Netherlands in 1932, by Adriaan van Well, ...

(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, but som ...

design (2002), the spar reaches toward the cable supported deck and is counterbalanced by a structural tail. In the

Assut de l'Or Bridge The Assut de l'Or Bridge (Valencian: ''Pont de l'Assut de l'Or'', Spanish: ''Puente de la Presa del Oro'') is a white single-pylon cable-stayed bridge in the City of Arts and Sciences in Valencia, Spain, designed by Valencian architect and civil en ...

(2008), the curved backward pylon is back-stayed to concrete counterweights.

Of this type by Santiago Calatrava

, Seville, Spain, 1992 (backward cantilever) * Trinity Bridge, Manchester, United Kingdom, 1995 (backward cantilever) *

, Buenos Aires, Argentina, 2002 (forward cantilever with gate-swing opening) * Sundial Bridge at Turtle Bay, Redding CA, USA, 2004 (backward cantilever with glass decking) *

Chords Bridge The Chords Bridge ( he, גשר המיתרים, ''Gesher HaMeitarim''), also called the Bridge of Strings or Jerusalem Light Rail Bridge, is a side-spar cable-stayed bridge in Jerusalem. The structure was designed by the Spanish architect and eng ...

, Jerusalem, Israel, opened 2008, light rail operative since 2011 (single-sided angled cantilever side-spar) *

, Valencia, Spain, opened 12 December 2008 (backward curved pylon, back-stayed cantilever) *

Samuel Beckett Bridge Samuel Beckett Bridge () is a cable-stayed swingbridge in Dublin, Ireland that joins Sir John Rogerson's Quay on the south side of the River Liffey to Guild Street and North Wall Quay in the Docklands area. Design and construction Architect ...

, Dublin, Ireland, opened 10 December 2009 (single-sided forward curved back-stayed pylon, evoking a harp) * Ponte di San Francesco da Paola, Cosenza, Italy, opened 26 January 2018 (backward pylon) * Signature Bridge, New Delhi, India, opened 04 November 2018 (Asymmetrical cable stayed pylon bridge)

Others of this type

* 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. Although impressive and elegant, its construction was highly controversial due to its cost, its design (very similar to the one by

), and the fact that the river it crosses is dry. * Mariánský most - in the

Czech Republic The Czech Republic, or simply Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The ...

. (1998) *

Erasmusbrug The Erasmusbrug (English: "Erasmus Bridge") is a combined cable-stayed and bascule bridge, construction began in 1986 and was completed in 1996. It crosses the Nieuwe Maas in the centre of Rotterdam, connecting the north and south parts of this ci ...

- by Ben van Berkel, in Rotterdam Netherlands. * Signature Bridge, Delhi, India, opened 5 November 2018.(Unique design of cables in a combinations of radial and semi-harp arrangement)

Of this type by Santiago Calatrava

Others of this type

See also