The first part of weeks of work on the A17 Crosskeys Bridge is set to take place on Wednesday and Thursday 4 and 5 September.
As previously reported, temporary traffic lights, or a 32-mile diversion are the options while specialist surfacing is put down.
The main works are due to start on September 30, but a trial of placing the specialist surface is due to take place early in September.
Karen Cassar, assistant director highways, said: “The bridge has suffered a lot of wear and tear since it was last resurfaced around 10 years ago and it’s vital we repair it.
“Unfortunately, this isn’t as straightforward as resurfacing a regular road – swing bridges require specialist techniques and materials.
“These two days are a trial run and will allow us to better estimate how long it will take to fully resurface the bridge.
“It will also give us an opportunity to see how the temporary lights impact the flow of traffic and whether we need to look at this again ahead of the main works.
“This is an important route for the county, and there will inevitably be some disruption, so we would ask motorists to be patient, to leave additional time for their journeys and use alternative routes where possible.”
The main works are currently scheduled to begin on Monday 30 September. A further update on the timings and arrangements for these works will follow after the trial.
During the trial, the team will also be erecting scaffolding for repairs to the control room.
The bridge will remain operational for marine traffic throughout the project.
For more on roadworks taking place across the county, visit www.lincolnshire.gov.uk/roadworks
