Gröndalsbron, Concrete bridge in Stockholm, Sweden

Gröndalsbron connects Stora Essingen island to the Gröndal neighborhood through two separate concrete structures. The pair of bridges carries both vehicle traffic and a light rail line across a water body.

The first section opened in 1967 as part of a major highway project. A second span was added later to accommodate expanding transit needs.

The two bridges carry different namesakes' traffic: the motorway span is part of Essingeleden, while the parallel light rail bridge belongs to Tvärbanan and opened in 2000 together with Alviksbron. The motorway bridge was designed by the architectural firm AOS (Ahlgren-Olsson-Silow) and engineered by the municipal company Gekonsult, the same team behind Fredhällsbron.

The motorway bridge is part of Essingeleden and carries fast-moving traffic, so it is not a pedestrian route; the parallel Tvärbanan light rail bridge opened in 2000. The structure spans Essingesundet between Gröndal and Stora Essingen, with a horizontal clearance of 26 metres and a maximum clearance of 25.2 metres at the central span. Cross the water by tram or bus instead of on foot.

The second bridge required reinforcement after cracks were discovered, which became a major news story locally. This incident highlighted the importance of regular inspection for large structures.