More than 400,000 cubic metres of sand will be pumped onto beaches between Saltfleet and Gibraltar Point by the Environment Agency.
Sand will be dredged from licensed areas of the seabed to replace levels naturally lost to the sea throughout the year.
This It reduces flood risk for 20,000 homes and businesses, 24,500 static caravans and 35,000 hectares of land.
Replenishing the sand means the beaches – instead of hard defences like sea walls – take the brunt of the waves’ force and energy.
The Environment Agency has been restoring sand levels on the Lincolnshire coast every year since 1994. In addition to reducing flood risk, the work brings supplementary social and economic benefits by retaining the sandy beaches for a vibrant tourism industry.
Dredging is expected to begin after the Easter school holidays. The access road to Huttoft Car Terrace from Roman Bank will be closed from 22 March until 27 March for equipment to be safely delivered and a site compound to be set up.
Beaches affected include Trusthorpe, Mablethorpe, Ingoldmells, Trunch Lane, Wolla Bank, Chapel Six Marshes and Huttoft. Local people who may be visiting these beaches are asked to stay clear of the worksites.
Deborah Campbell, flood risk manager at the Environment Agency, said: “This vital work reduces the risk of flooding to homes and businesses on the coast, and we’re delighted we can, once again, go ahead in line with coronavirus restrictions.
"All our staff, contractors and partners will practice social distancing and follow Public Health England’s guidance for safe working.
“As well as helping to protect people from flooding, the work will also help maintain our beloved sandy beaches so they’ll be ready to welcome back locals and tourists alike, when it’s safe for visitors to return.”
The work is funded as part of the Environment Agency’s capital programme – a record £5.2bn government investment in England’s flood and coastal defences to better protect 336,000 properties by 2027.
People are urged sign up now to receive flood warnings via 0345 988 1188 or GOV.UK/Flood, where there is also information on the practical things people can do to protect their businesses, homes and valuables.