Seedamm

The Seedamm and the wooden bridge (to the right) between Hurden (foreground) and Rapperswil
The Hurden peninsula on an aerial photo by Walter Mittelholzer (1929), Seedamm in the background
Seedamm as seen from Rapperswil
End of the Seedamm in Rapperswil

The Rapperswil Seedamm is the artificial causeway at the narrowest area of Lake Zurich between Hurden (SZ) and Rapperswil (SG). The structure contains two bridge segments and is approximately 1 kilometre (0.62 mi) long. The Seedamm carries a road (Hauptstrasse 8) and a railway across the lake, with the railway being used by the S5 and S40 services of Zurich S-Bahn and by Südostbahn's Voralpen Express.

The Melide causeway across a narrow section at Lake Lugano is comparable to the Seedamm.