Alnö bridge

The Alnö Bridge is a major reinforced concrete structure that connects the island of Alnö to the Swedish mainland while crossing the Gulf of Bothnia. The construction spans across the water and forms a direct link between the two land areas.

The structure opened in 1964 and was then the longest bridge in Sweden. It marked a turning point for transportation and how the region developed.

The bridge connected the island community to the mainland and allowed people to live and work there more easily. Today it shapes how residents experience their relationship with the wider region.

The structure receives regular checks and maintenance to stay in good condition. Thousands of vehicles, cyclists, and pedestrians use it daily to travel between the island and the mainland.

Nearby geological formations contain rare volcanic complexes from an eruption that happened 570 million years ago. These ancient rock deposits give the landscape an unusual geological depth.

Location: Sundsvall Municipality

Inception: October 24, 1964

Made from material: reinforced concrete

GPS coordinates: 62.43278,17.39806

Latest update: December 12, 2025 09:00