Frösöbron, Bridge in Östersund, Sweden

Frösöbron is a bridge over the Östersundet strait in Storsjön, linking Hornsberg on the island of Frösön with the central district of Staden in Östersund. It opened in 1972 and was then the only bridge connecting Frösön to the mainland.

A bridge at this crossing is recorded as early as around 1030–1050: Östmans bro, named on the Frösöstenen runestone near Landstingsborgen and Hornsbergskyrkan. In 1710–1712 Captain Petter Brunnman (ennobled Riddercrona in 1719) built a pile bridge, which was destroyed by the spring ice breakup in 1753. Oscarsbron, a steel bridge named after King Oscar II, followed in 1890 and was opened by the king in 1897; a 12-metre-wide concrete bridge replaced it in 1936. The present Frösöbron was inaugurated in 1972 and remained the only link between Frösön and the mainland until Rödöbron (1993) and Vallsundsbron (1998) were added.

The name Frösöbron simply means "the Frösön bridge", after the island it links to Hornsberg and central Östersund. The rune stone Frösöstenen in Hornsberg names Östmans bro, a crossing from around 1030–1050, so the route over the Östersundet has been remembered locally for nearly a thousand years.

Frösöbron carries the road between Hornsberg on Frösön and the central Staden district of Östersund, so traffic crosses it continuously. It was the only bridge linking Frösön to the mainland from 1972 until Rödöbron opened in 1993, and Vallsundsbron followed in 1998.

The current bridge opened in 1972 and was then the only fixed link between Frösön and the mainland; the Rödöbron (1993) and Vallsundsbron (1998) came later. Its predecessor, a 12-metre-wide concrete bridge from 1936, stood on the same crossing until the new span replaced it.