Aach (Arbon) Wikipedia
The Aach is a river in Arbon in Switzerland, formed by the confluence of two rivers, each about 9 kilometres (6 mi) long. It flows through the city of Arbon and after almost two kilometers flows into Lake Constance
The link road Arbon-Landquart crosses the Aach. Built in 1910, the bridge over the river was completely renovated for the first time in April 2006, after more than 90 years.