Fishermen, boaters and wind-surfers have all been advised to stay away from the bridge that connects Sweden and Denmark.
Two concrete troughs placed too close together resulted in friction damage from passing trains.
And damage to the roof of the railway has led to a risk of falling concrete, according to a statement by the Öresund Bridge consortium.
The Sundlink company is set to begin repair work at the start of the new year. By the end of January work is expected to be completed above Trindelrännan, a small passage on the sound located near the Swedish coast.
“We encourage fishermen and boaters to stay away from the risk zone. And we promise to do all we can to minimise the risks,” said Öresund Bridge production manager Bengt Hergart.