The infrastructure construction group has won two contracts totalling £73m for Blackpool and Wyre councils, its latest in more than 10 years of sea defence work in the area.
The £20m Anchorsholme Scheme for Blackpool Council and the £53m Rossall Scheme for Wyre Council will replace 3km of 1930s seawalls as part of promenade renewal and beach management projects.
Balfour Beatty has worked for Blackpool and Wyre for 13 years. Andrew McNaughton, chief executive of Balfour Beatty, said: "Drawing on our extensive experience of delivering coastal defence schemes, we will utilise innovative construction methods such as BIM to deliver first class civil engineering schemes that will protect over 12,000 properties and local infrastructure from the risk of coastal flooding."
Works on both contracts will start on site this winter with completion for Anchorsholme in summer 2015 and for Rossall in summer 2017.
Both schemes will be predominantly funded by the Environment Agency. They form part of the wider Fylde Peninsula Coastal Programme which aims to protect properties from flooding and regenerate parkland areas for local community use.