 The bridge, actually two separate bridges, carries the railway Saltsjöbanan and a road.For unknown reasons the location of the bridge, like many other places along the shores of Sweden and Norway, was named 'Danviken', meaning "danernas vik", "The Bay of the Danes", and until the early 20th century most people called it "Dannviken" (short "a", like "Danmark" is still pronounced) rather than, as is common today, "Daanviken" (long "a").Since King Gustav Vasa (1496–1560) had the water level of the lake Hammarbysjön increased by 4.8 metres, the lake emptied into Saltsjön through a small rivulet overshadowed by a simple wooden bridge and the familiar silhouette of an old mill, and for many centuries Danviken remained mostly renowned for its hospital, "Danviks hospital", which the king had moved from Riddarholmen near the city.