Schwarzwasserbrücke, Pair of arch bridges in the canton of Bern, Switzerland

The Schwarzwasserbrücke consists of two parallel 170-metre arch bridges spanning the Schwarzwassergraben just before its confluence with the Sense, between Schwarzenburg and Köniz in the canton of Bern. The steel road bridge of 1882 carries Hauptstrasse 232 and is a listed monument; the steel railway bridge of the Bern–Schwarzenburg line, added downstream in 1907, was replaced by a reinforced-concrete bridge in 1979.

The road bridge, a steel structure on the main road 232, was built in 1882 and is a listed monument. In 1907 a steel railway bridge for the Bern Fischermätteli–Schwarzenburg line was added downstream, parallel to it. That railway bridge was replaced in 1979 by a reinforced concrete bridge.

The structure holds class B status in Swiss cultural property classifications, reflecting regional engineering methods from the late 1800s. It remains part of daily life for residents who depend on it for movement between communities.

The bridge maintains a gentle slope, providing a stable crossing for both vehicles and trains. It remains passable year-round and serves as a daily link for commuters and traffic between the two municipalities.

The two bridges are separate structures: the 1882 steel road bridge stands upstream, while the railway bridge was rebuilt in reinforced concrete in 1979. The older road bridge is a listed monument, so the pair shows two different eras of engineering side by side.