Grüne Brücke, Pedestrian bridge in Neustadt district, Mainz, Germany.

The Grüne Brücke is a pedestrian crossing that spans the four-lane Rheinallee, connecting Feldbergstrasse with Feldbergplatz. Above the road sits a 2000-square-meter area planted with vegetation and water features that soften the passage.

The environmental artist Dieter Magnus, then living in Mainz-Neustadt, designed the Grüne Brücke in 1977; the planning engineer was Horst Waldmann. The green crossing over the Rheinallee opened in 1981. Magnus received the Bundesverdienstkreuz am Bande in 2012 for this work, which became a much-noted model for near-natural design in public space.

The bridge functions as an art installation that weaves nature into the urban landscape, with water features and plantings creating a garden experience above the road. It demonstrates how green spaces can thrive in the middle of heavy traffic.

Pedestrians and cyclists can use this passage freely and access it from Feldbergstrasse or Feldbergplatz. It provides a quiet route away from the traffic noise of Rheinallee.

Since 2014, the bridge has been home to around 200,000 honeybees that forage for nectar in the wild plants. The location merges art with a living ecosystem in the heart of the city.