Blue Bridge

The Blue Bridge is a 97.3-metre-wide bridge that spans the Moika River in Saint Petersburg, Russia. The Blue Bridge is the widest bridge in Saint Petersburg and is sometimes claimed to be the widest bridge in the world – a claim, however, that has not been recognized by international reference works, such as the Guinness World Records.

The Blue Bridge spans the Moika River and is located in front of the Mariinsky Palace at Saint Isaac's Square in city's historic centre. The first cast iron bridge on the site was designed in 1805 by the architect William Heste, and built in 1818. This bridge was a single-span bridge resting on stone supports, and measured 41 metres across.