The Almö Bridge, inaugurated in 1960, was built to connect the island of Tjörn to the Swedish mainland. At its opening it was the longest arch bridge in the world. Built after a suggestion from Krupp, and on a budget, the arch bridge type was cheap but it also had narrow roadways forcing heavy traffic to slow down.Below it was the busy shipping lane leading to the town of Uddevalla, which sported a large shipyard and bulk harbor at the time.