Brücke der Solidarität, Steel arch bridge in Duisburg, Germany.

The Bridge of Solidarity is a steel arch bridge that spans across the Rhine River, connecting the districts of Rheinhausen and Hochfeld. Three traffic lanes allow vehicle movement in both directions, with the middle lane able to shift its direction based on traffic needs.

The original Admiral-Graf-Spee bridge was destroyed in 1945 and replaced by this new construction completed in 1950. The rebuilding was part of Duisburg's recovery following World War II.

The bridge received its name in 1988 when tens of thousands of steel workers marched across it to protest against factory closures. This event turned the name into a symbol of workers' struggle in the industrial region.

The bridge carries three 3-metre lanes, with a 1.1-metre cycle lane and a 1.8-metre footpath alongside. The middle lane is switched by light signal for one direction at a time, so check the signal before stepping onto the carriageway. The span crosses the Rhine at kilometre 775.29 between Rheinhausen and Hochfeld.

The bridge's 255.9-metre tied arch made it the longest of its kind in Germany when it opened in 1950, built on a proposal from Krupp Stahlbau Rheinhausen. The three-lane layout was ordered by the British military government, which cut it from the predecessor's four lanes.