Natural Resources Wales (NRW) says an important milestone is reached this week in the development of the St Asaph flood scheme, which will reduce the risk of flooding for people in more than 400 properties.
The old Spring Gardens Bridge, which partly obstructed the flow of the river Elwy in the flooding of November 2012, is being removed. It is being replaced with a new one, which is higher and wider.
The work is expected to take three weeks.
Meanwhile NRW says work continues on new and raised defences through the city downstream of Lower Denbigh Road.