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{{Short description|Bridge over Neva river in Saint Petersburg, Russia}}
{{Use dmy dates|date=May 2017}}
{{Infobox Bridge
| bridge_name = Trinity Bridge<br />Тро́ицкий мост
| image = Trinity Bridge in Saint Petersburg.jpg
| caption =
| official_name =
| carries = 4 lanes of roadway, tram lines
| crosses = [[Neva River]]
| locale = [[Saint Petersburg]]
| maint =
| id =
| design = [[Segmental bridge]], [[bascule bridge]]
| mainspan = 43 meters
| length = 582 meters
| width = 24 meters
| height =
| load =
| clearance =
| below =
| traffic =
| open = 1903, first half
| closed =
| toll =
| map_cue =
| map_image =
| map_text =
| map_width =
| coordinates = {{coord|59|56|55.51|N|30|19|38.66|E}}
| lat =
| long =
}}
'''Trinity Bridge''' ({{lang-ru|Тро́ицкий мост}}, ''Troitskiy Most'') is a [[bascule bridge]] across the [[Neva River|Neva]] in [[Saint Petersburg]], [[Russia]]. It connects [[Kamennoostrovsky Prospect]] with
The bridge takes ==History and construction==
[[Image:Троицкий_мост_через_Неву._2011-04-23.jpg|thumb|left|210px|The Trinity Bridge is a landmark of [[Art Nouveau]] design]]
In 1803 the Voskresensky ponton bridge, which was built in 1786 near Voskresensky Prospected (now Chernyshevsky Prospect), was moved to the [[Summer Garden]]. In 1825, the ponton Suvorovsky Bridge was built to link Suvorovskaya Square with Troitskaya Square. ▼
[[File:Rostral Сolumns of Trinity Bridge SPB.jpg|210px|thumbnail|left|Rostral Сolumns of Trinity Bridge]]
▲In 1803, the Voskresensky ponton bridge, which was built in 1786 near Voskresensky
In 1892, a contest for constructing a permanent Troitsky Bridge was announced. There were 16 entrants from Russian and European engineers, including one from the French engineer [[Gustave Eiffel]], the creator of the famous [[Eiffel Tower]] in [[Paris]]. The winner was the out-of-competition
Construction began on 12 August 1897. [[Félix Faure]], the [[President of the French Republic|president of France]] was present at the ceremony. In the same political spirit, [[Nicholas II of Russia]] laid the foundation stone for the [[Pont Alexandre III]] in [[Paris]], another memorial to the [[Franco-Russian Alliance]]. The bridge was completed in 1903, in time for the 200-year anniversary of Saint Petersburg.<ref name=b1/>
Originally the bridge had nine spans. Five of these were permanent metallic riveted spans, with novel console-arch-beam systems and gradually increasing span length from banks to the middle of the river. A three-arch granite viaduct linked the metallic central section to the right bank, and a two-winged bascule span joined it to the left bank. The design of the central spans, in which single uncut girders bridge more than one span, significantly relieves the stress on the central part of the arches, decreasing the support required in the river and giving the span structures a gentle arch shape. The bridge is decorated with cast iron gratings with artistic [[casting]], [[granite]] pylons with lanterns and metallic three-colour lanterns in the [[
▲Originally the bridge had nine spans. Five of these were permanent metallic riveted spans, with novel console-arch-beam systems and gradually increasing span length from banks to the middle of the river. A three-arch granite viaduct linked the metallic central section to the right bank, and a two-winged bascule span joined it to the left bank. The design of the central spans, in which single uncut girders bridge more than one span, significantly relieves the stress on the central part of the arches, decreasing the support required in the river and giving the span structures a gentle arch shape. The bridge is decorated with cast iron gratings with artistic [[casting]], [[granite]] pylons with lanterns and metallic three-colour lanterns in [[Modernism|Modern]] style.
The obelisks flanking the entrance to the bridge from [[Suvorov Square (Saint Petersburg)|Suvorov Square]] were remodeled in 1955. In
[[File:Trinity Bridge SPB (img4).jpg|thumb|Raised Span of Trinity Bridge]]
It is believed that the Soviet pilot [[Valery Chkalov]] flew his plane under the Trinity Bridge in the 1930s – while there is no documentary proof of this event, his wife has confirmed it.<ref name=chkalov/> In 1940, Evgeny Borisenko repeated this feat several times during the filming of ''[[Valery Chkalov (film)|Valery Chkalov]]''.<ref name=chkalov2/> Chkalov's feat is referenced by [[Boris Grebenshchikov]] in his song "Under the Bridge, like Chkalov" ("Под мостом как Чкалов").<ref name=chkalov3/>
==See also==
▲In 1965-1967 the bascule span was rebuilt as a one-winged, lifting design. Its length was extended to {{m to ft|43}} and its appearance modelled on the other metal spans. A granite arch slope was set on the left bank. During the reconstruction water slopes were enlarged and granite benches were set along left bank abutment.
* [[List of bridges in Saint Petersburg]]
==References==
{{reflist|refs=
<ref name=chkalov>[https://spbarchives.ru/web/group/bridges_3_2 ТРИДЦАТЫЕ И ПРЕДВОЕННЫЕ ГОДЫ (1934–1941)]. spbarchives.ru</ref>
<ref name=chkalov2>[http://spb.mk.ru/article/2013/10/23/935417-poletyi-pod-mostami-v-kino-i-nayavu.html Полеты под мостами в кино и наяву]. spb.mk.ru (23 October 2013)</ref>
<ref name=chkalov3>[http://www.bbc.com/russian/multimedia/2013/11/131119_live_on_the_bbc_1996_pod_mostom_kak_chkalov Борис Гребенщиков. "Под мостом как Чкалов"]. BBC (26 November 2013)</ref>
}}
==External links==
{{Commons category|Trinity Bridge (Saint Petersburg)}}
*[http://www.saint-petersburg.com/bridges/trinity-bridge.asp The Trinity Bridge in Saint Petersburg, Russia].
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[[Category:Bridges completed in 1903]]
[[Category:Bascule bridges]]
[[Category:Neva River]]
[[Category:Cultural heritage monuments of regional significance in Saint Petersburg]]
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