The Cardiff Bay Barrage is 1.1km long and extends from Cardiff docks in the north to Penarth in the south. This major civil engineering construction project subsequently led to the impoundment of the Bay, which boasts over 13km of waterfront.
The £220 million plan, which commenced in 1994 and was completed in 1999, was the catalyst for the £2 billion regeneration of the old docklands areas of Cardiff and Penarth.
The Barrage features locks and bridges, sluice gates and a fish pass. It also provides a landscaped embankment area – a public open space – where visitors can promenade and picnic, with excellent views out over the sea and Inner Bay.
How does the Barrage work?
Around the Barrage site you’ll find information boards outlining its day-to-day running. Here are further details about the individual components that make up the Barrage structure: