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
Police think that one of the men involved in last week's abduction attempt at RAF Marham was given a black eye.
A father-of-three from Ipswich had a 'near hiss' when he found a large black snake he feared was a deadly constricter in his back garden.
Ipswich Town manager Mick McCarthy says his team were 'garbage' in their pre-season game at Cambridge United.