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
Cambridgeshire's Hannah Macleod has been named in the 16-strong hockey squad to head to Rio this summer.
The national newspapers have been reacting to England's exit from Euro 2016 after they were beaten 2-1 by lowly Iceland.
Sunny spells at first this morning but it will turn cloudy through the day and rain will arrive during the afternoon. Highs of 18ºC.