Semyonovsky Bridge, Metal beam bridge over the Fontanka River in Admiralteysky District, Saint Petersburg, Russia

The Semyonovsky Bridge is a three-span metal beam bridge over the Fontanka River, carrying Gorokhovaya Street between Spassky and Bezymyanny islands. Its welded continuous beam superstructure has six main girders and spans of 18.3, 14.05 and 18.3 metres. The bridge is 54 metres long and 20.1 metres wide, with an asphalt roadway of four lanes, raised sidewalks and cast-iron artistic railings.

Originally built as a wooden bridge in 1733, it was reconstructed in stone in 1788. Later reinforcements and repairs maintained the structure through the centuries.

The bridge takes its name from the Semenovsky Imperial Guard regiment that was stationed nearby. The name reflects the military past that shaped this part of the city.

The bridge offers direct access to both riverbanks and is easy to reach on foot or by vehicle. Visitors should be aware that traffic flows regularly here, especially during peak times.

In 1856–1857 the bridge became the first in Saint Petersburg to span its openings with riveted metal I-beam girders made of wrought iron, when engineer Fyodor Enrold rebuilt the dilapidated stone piers and dismantled the towers. The novelist Nikolai Chernyshevsky mentions the Semyonovsky Bridge in "What Is to Be Done?" to locate where Vera Pavlovna first lived.