The only bridge connection for motortraffic with Nøtterøy and further to Tjøme. Folding bridge since 1957. King Håkon Håkonsson was one of those who dug out the canal, so that larger ships could pass through. Height 3.30 m at normal water level. Opening times 15th April to 15th September, daily 9:05 am, 12:05 pm, 2:05 pm, 6:05 pm and 8:05 pm. 16th September to 14th April: Mon-Fri 9:05 am, 12:05 pm and 2:05 pm.
A bridge for pedestrians and cyclists – Kaldnesbrua – was opened in Febr. 2005.