Alte Rheinbrücke, Wooden international bridge in Vaduz, Liechtenstein and Sevelen, Switzerland.

The Alte Rheinbrücke is a 135-metre wooden bridge over the Rhine linking Vaduz with Sevelen, built in 1900–1901 on the piers of its 1870–1871 predecessor. It follows the Howe system: diagonal timber compression members combined with vertical metal tension rods that could be re-tightened to pre-stress the structure. Five piers create six spans, the four inner ones about 20.5 metres long and the two outer ones 26.8 metres.

This structure was built in 1901 as a replacement for an earlier wooden bridge from 1871 that needed constant raising because of Rhine River engineering projects. The new design aimed to be more stable against future river modifications.

The bridge is a border crossing where pedestrians and cyclists pass between Liechtenstein and Switzerland. Its survival is due to joint maintenance: Vaduz paid two thirds and Sevelen one third of the first bridge in 1870–1871, with Liechtenstein contributing to Vaduz's share. Since 1975, when a concrete bridge opened 200 metres south, this crossing has been reserved for non-motorised traffic.

Since 1975, when the concrete Neue Rheinbrücke opened about 200 metres south, the Alte Rheinbrücke has carried only non-motorised traffic, so walkers and cyclists cross directly between Vaduz and Sevelen. The deck is timber and the Howe truss has six fields between five piers, with the two end spans meeting the Rhine dams. Sturdy shoes help when the boards are wet or icy.

This is one of the last fully intact wooden bridges spanning the Rhine and still uses the 1901 engineering system. The mix of wooden diagonals and metal tension rods shows a craftsmanship approach that has largely disappeared.