Essential repair work which will last more than a week is set to get under way at Haven and Breydon Bridge.
The maintenance work on the two bridges in Great Yarmouth will begin on Monday, September 30.
While repairs are carried out both bridges will be unable to lift for vessel traffic.
In a Facebook post, Peel Ports said the "essential repair and maintenance work" would be completed by Wednesday, October 9.
Road traffic will not be affected.
For more information call 01493 335 536.
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