The tidal barrier which will protect thousands of homes and businesses from the risk of flooding.
Work on the 38 million pound project in Ipswich started today and it is due to open in 2016.
The council says it will secure the future of the town, and encourage economic growth.
More top news
Weather looking rather unsettled over the next few days with patches of light rain forecast.
A post mortem examination on a fin whale that was found washed up on a beach in Norfolk revealed she died of starvation.
The wife of a man from Suffolk who went missing in France, has been speaking about the agony of not knowing what has happened to him.