Rapperswil-Jona is one of the most significant traffic junctions in the region, and Rapperswil railway station is a nodal point for the Swiss Federal Railways, Südostbahn and S-Bahn Zürich lines. Zürichsee-Schifffahrtsgesellschaft (commonly abbreviated to "ZSG") operates passenger vessels on the Lake Zürich, connecting surrounding towns between Zürich-Bürkliplatz and Rapperswil. The "Seedamm", a dam across Lake Zürich, links Rapperswil with Hurden (SZ) on the other side of the lake. This connection has been part of old pilgrimage routes. From early centuries, a wooden footbridge led across Lake Zürich. At a later stage, the bridge was replaced by a stone dam. In 2001, a new wooden footbridge was opened alongside the dam for the first 840 meters of the crossing. It was built in the same place as the original bridge and links Rapperswil with the nearby bridge chapel ("Heilig Hüsli") built in 1551.