Vasabron

Vasabron (Swedish: "The Vasa Bridge") is a bridge over Norrström in central , Sweden connecting Norrmalm to Gamla stan, the old city.

The bridge is, unintelligibly, named after King Gustav Vasa (1496–1560), perhaps because of the vicinity to the statue of the king in front of the House of Knights. From Vasabron a much smaller bridge, Strömsborgsbron, connects to the islet Strömsborg.

Nearby bridges include Riksbron, Stallbron, Norrbro, Centralbron, and Strömbron.

By the mid 19th century Stockholm was expanding quickly and the single permanent northern connection at the time, Norrbro, was becoming insufficient, why a new bridge to the west of it was proposed. A first attempt to build the bridge was made by the British-Swedish engineer and industrialist Samuel Owen (1774–1854). He began to work on a suspension footbridge soon after an agreement with the city was settled, but the work had to be cancelled since Owen was declared bankrupt in 1843.

Owens attempt was followed by various proposals and in 1868 a competition for an 18 metres wide cast iron bridge connecting Riddarhusgränd to Tegelbacken was finally commissioned, requiring all proposals to be "neat and lasting". The city approved two of the incoming proposals and the bridge was begun in 1872 to be completed six years later. It stretched 208 metres over seven arches with a maximum span of 32 metres. End grain wood blocks on a concrete foundation formed the roadway while the pavements were made of asphalt. For the construction cast steel was used for the first time and the bridge was innovative for its time using underwater cast concrete.

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