In former times a mule track led from Hundwil over the Rachentobel, Zweibruggen and the Hundwiler ladder to St. Gallen. The road was in poor condition and when the Hundwiler ladder suffered considerable damage in 1933, the idea of building a bridge became more concrete, and so the Haggenbrücke came into being, celebrating its opening on October 31, 1937. But when the 5600 people stayed at the inauguration on the bridge, this was in threatening vibrations. Since then, the Haggenbrücke is also called Ganggelibrugg. After repairs it was released - but never approved for the original purpose (the car traffic).
In 2010, the bridge was completely renovated. It is 355.50 meters long, 98 meters high, 3.8 meters wide and weighs 350 tons.
Its original function as a motor bridge and important traffic connection between stone and St. Gallen could never fulfill the Haggenbrücke. As a pedestrian bridge, however, it is a popular destination. The spectacular views over the Sitter and Wattbachtobel, the shaking in strong winds or under load and easy access to the community Stein AR for hiking trips give the "Ganggelibrugg" a local significance.