The four kilometre seafront defence wall will be completely replaced if a £10m cash bid gets the green light.
The wave reflection wall on Morecambe promenade has been earmarked for major renewal works over the next six years.
If the bid for £9.9m of Environment Agency funding is approved, Lancaster City Council hopes to start the work during the next year.
The full length of the wave reflection wall from Happy Mount Park to Lord Street and Midland Hotel to Oakley Road would be replaced.
The wall has taken a battering in the storms of the past two months and waves again crashed onto the promenade on Sunday. (see picture)
Ged McAllister, engineering manager for the council, said rock armour defences had proven “robust” against the lashing tides but the wall concrete had still deteriorated.
Mr McAllister said a vulnerable spot in the coastal defences opposite the Frontierland site was also being looked at. He said this had been caused by natural “lowering of the beach”.
He said: “The defences have generally upheld but we have had some maintenance issues.
“We’ve had to deal with a lot of debris, gravel and wind blown sand.”
A flood warning was in place in Heysham on Monday afternoon due to an expected tidal surge. Warnings were also in place at Arnside, Sunderland Point and Overton.
The weather was due to improve today with sunny intervals forecast. The outlook for tomorrow (Wednesday) is heavy rain with dry weather forecast for later in the week.