Blackpool Council has secured £61.2m in funding to upgrade Bispham's sea defences, protecting more than 4,000 properties.
The funds have been granted by the Environment Agency following the successful submission of an Outline Business Case.
The scheme will see two sections of the existing sea defences refurbished - 1.5km from Princes Way at Little Bispham to Red Bank Road, Bispham and 1.3 km from Gynn Square to Cocker Square.
The existing defences, which were constructed in the 1980s, have been regularly maintained however the council says they are now life expired and in need of replacement. The work will reduce the risk of erosion to 3,631 households, 380 non-residential properties and strategically important infrastructure, such as Blackpool's tramway.
Coun Jane Hugo, cabinet member for climate change, said: "Many coastal communities are experiencing the devastating effects of coastal erosion and it is critical that we act now to protect the coastline of Blackpool.
“Once complete more than 4,000 properties will have protection against future rising of the sea level. The funding will allow us to refurbish the defences and will give us an opportunity to improve access for users of the beach.
“The project will also bring benefits to the local community in terms of job/ apprenticeship opportunities – another positive outcome.”
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