Businesses and residents have told the Standard life has been difficult for them due to the delays in getting the improvements completed.
However, steps have now been taken to ease traffic flow as more people return to the coast.
Karen Cassar, Assistant Director – Highways at Lincolnshire County Council, said: "We've taken the decision to fully re-open Roman Bank from late May so Skegness can enjoy what will hopefully be a successful post-lockdown summer season.
"We expect to have our traffic management removed by Wednesday 26 May, with the project set to resume on Monday, September 20.
"Once the school holidays are over in September, we'll head back to town with Cadent so they can finish diverting the gas main between Muirfield Drive and Brancaster Drive ahead of us completing our road and footway improvements from Muirfield Drive up to the junction with North Shore Road in spring 2022.
"This was the best of all the options we looked at since it means businesses can trade and take deliveries freely throughout summer, while residents and visitors can get around town and park without having to worry about road works."
Ahead of the road re-opening for summer, the team will be rebuilding the section of Roman Bank just north of Muirfiend Drive to Fenland Laundry, including excavating 500 tonnes of old road.
In addition, a road closure between Asda and Brancaster Drive will be in place for up to seven days, starting on Monday 17 May, to lay the final layer of road surfacing.
The official diversion route will be via the A52 / C541 / A158 at the Gunby dual carriageway, and vice versa.
For up-to-date information about this and other roadworks, visit www.lincolnshire.gov.uk/roadworks.