Mittlere Brücke, Stone arch bridge in Basel, Switzerland

Mittlere Brücke is a granite road bridge of 192 metres with seven arches, six over the Rhine and one over the riverside footpath on the Kleinbasel side. It was built in 1903–1905 by Albert Buss & Cie. and Philipp Holzmann, with stonework by Emil Faesch and an iron truss skeleton by Friedrich von Thiersch. A reproduction of the Käppelijoch chapel stands over the central support.

The original bridge was built around 1225 as the first crossing over the Rhine between Lake Constance and the North Sea. The current stone structure dates to 1905, when it replaced the earlier wooden version.

The bridge becomes a gathering point during Basel's Fasnacht carnival, where celebrants move back and forth between the two districts. Residents and visitors walk across it every day as a natural link between Grossbasel and Kleinbasel.

The bridge has been closed to private motor vehicles since the start of 2015, as part of Basel's car-free city centre. In summer 2017 the pavements were widened by 40 cm at the expense of road space. The deck is 192 metres long and 18.8 metres wide, with seven arches, six over the Rhine and one over the riverside footpath on the Kleinbasel side.

The Käppelijoch on the bridge is a reproduction: the original chapel was built in 1392 on the fifth stone pier, then the outermost, and also served to weigh down that pier against floods. The present chapel stands over the central support of the 1903–1905 stone bridge.