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Trinity Bridge is a bascule bridge across the Neva in Saint Petersburg, Russia. It connects Kamennoostrovsky Prospect with Suvorov Square. It was the third permanent bridge across the Neva, built between 1897 and 1903 by the French firm Société de Construction des Batignolles. It is 582 meters (1,909 ft) long and 23.6 meters (77 ft) wide. The bridge takes its name from the Old Trinity Cathedral which used to stand at its northern end. In the 20th century it was known as Equality Bridge (1918–1934) and Kirovsky Bridge (1934–1999).
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 Art Nouveau style.
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Trinity Bridge is a bascule bridge across the Neva in Saint Petersburg, Russia. It connects Kamennoostrovsky Prospect with Suvorov Square. It was the third permanent bridge across the Neva, built between 1897 and 1903 by the French firm Société de Construction des Batignolles. It is 582 meters (1,909 ft) long and 23.6 meters (77 ft) wide. The bridge takes its name from the Old Trinity Cathedral which used to stand at its northern end. In the 20th century it was known as Equality Bridge (1918–1934) and Kirovsky Bridge (1934–1999).
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 Art Nouveau style.