Grevenaubrücke, Pedestrian bridge in Hamburg, Germany.

The Grevenaubrücke is a pedestrian and cycle bridge on the Alsterwanderweg, crossing the Alster between the Grevenau and Kritenbarg streets in Hamburg-Poppenbüttel, at the border with Wellingsbüttel. The 2021 replacement stands beside the site of the old crossing and has a heavy, high frame construction, unlike the slimmer prestressed-concrete footbridges built over the Upper Alster in the 1950s.

A wooden footbridge already stood here in 1910, when Poppenbüttel belonged to Stormarn; it was built high so Alster barges could pass and had steps for towing. In 1914 the Alsterthal-Terrain-Actien-Gesellschaft built a concrete bridge, replaced in 1933. The bridge was renovated in 1993 for 132,000 DM, a new span was built alongside from 2019 to 2021, and the old one was demolished in 2022.

The bridge takes its name from the Grevenau, a small left-bank tributary of the Alster nearby. Around 1910 locals and Hamburg day-trippers used the wooden footbridge here to reach the Waldhof inn, today the restaurant Randel. The crossing is part of the Alsterwanderweg long-distance footpath.

The bridge carries the Alsterwanderweg between the streets Grevenau and Kritenbarg in Poppenbüttel, on the border with Wellingsbüttel. The replacement built from 2019 to 2021 stands next to the site of the old bridge, which was demolished in 2022. The crossing lies in a protected floodplain forest along the Alster.

Under the old bridge ran several power lines of Hamburg's electricity grid, including a 24 kV line. For the new bridge, a cable duct was laid in the Alster and the cables pulled through it. The 2022 demolition of the old bridge cost 130,000 euros; the new build was given as 400,000 euros.