A four-week scheme to improve the road surface on Cross Keys Bridge is ready to begin.
The resurfacing works are expected to run from 23 September for four weeks, with a preliminary work in the first week of September for two days.
The bridge will remain open to traffic, but via one lane and traffic signals. A diversion will also be in place.
Karen Cassar, Assistant Director for Highways, said: "It's vital we make these repairs to ensure the bridge remains safe for people to use.
"It is over 10 years since the surface of the bridge was last replaced, and over that time it has worn down due to the high volumes of cars and HGVs using the route. We now need to put a new surface down to ensure the road can be used safely for years to come.
"The investment is around £100,000 and will ensure the bridge has the latest and best possible skid resistant specialist surface.
There will be two periods of scheduled works on the bridge- the first for two days to prepare for and trial the new surface before the main scheme later in the month, and also to see if our traffic management is effective. The second is for four weeks when the resurfacing works will be done.
The bridge will still remain operational for marine traffic.
Karen added: "In preparation for these works, we've spoken to local residents, businesses and bus services about the project – and they preferred to have the bridge open to two way traffic under traffic lights, in addition to a diversion route.
"We realise there will be significant disruption and severe delays in the area while the work is carried out, and would advise people to use the diversion route.
"We'd like to reassure residents that will do all we can to reduce the disruption, and get the work completed as quickly as possible."
For more on roadworks taking place across the county, visit www.lincolnshire.gov.uk/