The works will start on Monday, March 5, and are expected to take up to two weeks to complete (subject to weather).
A full 24/7 road closure will be in place on Marsh Road for the duration of the works. The diversion route will be via A1028 Ulceby Cross / A1104 Alford / B1449 Bilsby / A52, and vice versa.
This will also be the diversion route for the main section of Roman Bank improvement works in Skegness starting on Monday, March 8, for two weeks.
Karen Cassar, Assistant Director – Highways, said: "There was a bank collapse on Marsh Road, between Orby Holme Field Lane and Skegness Stadium, last month which led to us putting out temporary traffic signals to ensure people's safety when using the road.
"Next week, we'll be taking the opportunity to repair the bank now, while we're still in lockdown and there are fewer cars on the road, before restrictions start lifting and the coast gets busier.
"This will involve installing new sheet piles to support the road, along with rebuilding this section of carriageway.
"Because Marsh Road is part of the diversion route for our on-going works to Roman Bank in Skegness, the diversion route for that scheme will change to mirror the one for these works for two weeks.
"I want to thank everyone for their continued patience while we carry out these essential repairs."
For up-to-date information about this and other roadworks, visit www.lincolnshire.gov.uk/roadworks.