Rethe-Klappbrücke, Bascule bridge in Wilhelmsburg, Germany.

The Rethe-Klappbrücke spans the Rethe at its mouth into the Reiherstieg, linking Hohe Schaar with Neuhof. It is a bascule bridge with a 104-metre span opening a 64-metre-wide fairway of unlimited height, made of two separately hydraulically moved double-leaf bridges: one 14 metres wide for the road, one 10 metres wide for the railway. Opening takes about four minutes, closing twice as long.

The Rethe-Klappbrücke replaced the adjacent Rethe-Hubbrücke of 1934, which was dismantled in 2018. The Hamburg Port Authority commissioned the new bridge, built from June 2011 to summer 2016 by the Arge Rethebrücke consortium. Road traffic was released on 11 July 2016 and rail traffic on 15 December 2017; costs rose from 95 million to over 173 million euros.

The bridge is a double bascule: two separate hydraulically driven twin-leaf spans, 14 m wide for road and 10 m for rail. Opening takes about four minutes; closing takes twice as long. Its name comes from the Rethe, which it crosses at its mouth into the Reiherstieg, linking Hohe Schaar with Neuhof.

The bridge opens several times daily to allow ship passage, which means road and rail traffic is regularly interrupted. Pedestrians and cyclists should expect temporary closures when vessels need to pass through.

The bridge is the world's largest railway bascule bridge, built from June 2011 to summer 2016. Its two separate hydraulically moved double-leaf bridges, 14 m wide for the road and 10 m wide for the railway, open a 64 m wide fairway of unlimited height. Opening takes about four minutes, closing twice as long.