Northwest of Oberstaufen in the Bavarian-Swabian county of Oberallgäu, the Seelesgraben, the Moosmühlbach and the Schwarzenbach streams converge forming the Obere Argen.

Near Gestratz the Obere Argen collects the waters of the Röthenbach coming from the left and forms the Bavarian-Württemberg state border as far as Wangen.

It crosses the Obere Argen in 12 arches at a maximum height of 56 metres (184 ft).

The Obere Argen Viaduct is a 730 metres (2,400 ft) long structure supporting the A 96 motorway.

The autobahn viaduct comprises a cable-stayed bridge in combination with cable-tensioning beneath the roadway - a form of construction that was a first in Germany.