The town's A597 Northside Bridge and a footbridge collapsed, while the Calva Bridge was left unstable, when the River Derwent flooded in the early hours of 20 November.
BBC: Flooded town's new bridge on move
2.
Police say they are closely monitoring Calva Bridge in Workington, which is part of the A596, and engineers say it will have to be taken down if it does not fall.