Pont de Kérino, Swing bridge in Vannes, France.

The Pont de Kérino connects both sides of Vannes harbor with a central rotating mechanism that allows boats to pass underneath. The rotating section opens and closes to permit maritime traffic while maintaining the bridge as a passage for vehicles and pedestrians when closed.

The Pont de Kérino was inaugurated in 1988, giving the southern part of Vannes its only east-west road link across the harbour channel, downstream of a lock gate. It carried about 15,000 vehicles a day until September 2016, when cars were diverted to the Kérino tunnel, opened in July 2016 and begun in October 2013. The swing span still opens for boats, and by day it stays open two hours before and after high tide.

Since September 2016 the deck has been closed to cars, which use the Kérino tunnel opened in July 2016, so the bridge now opens for boats rather than carrying the 15,000 vehicles it once took daily. Its name comes from the Kérino district at the harbour channel in Vannes.

Since September 2016 cars have been banned from the bridge and must use the Kérino underpass, opened in July 2016. The deck stays open to shipping for two hours before and two hours after high tide during the day, so pedestrians may find the span swung aside at those times. The bridge otherwise opens once or twice a day, at tide-dependent hours, only when boats are waiting.

Since September 2016 the bridge has been closed to cars, which now use the Kérino underpass opened in July 2016. The deck still carries pedestrians and cyclists, and the swing span opens only once or twice a day, on tide-linked times, when boats are waiting.