Dixon Street is set to reopen this week to motorists after three months of construction works.
The busy road was closed and diversions were in place from July 23 so that workers could repair the bridge over the River Witham.
It will reopen on Friday, October 12.
Work completed so far includes the removal of old surfacing, installing new kerbing, safety barriers and traffic lights, as well as decommissioning the old pedestrian crossing.
Stagecoach East Midlands is now telling customers that buses are expect to return to Dixon Street from Sunday, October 14.
The travel company made some changes to their services on route 6 and 9. It also announced that services 533, 535 and 642 will return to their usual routes on the High Street and Dixon Street.
As previously reported, Lincolnshire County Council announced how the works are on track to be finished on time.
Senior engineer Andrew Antcliff said at the time: “With the upper surfaces of the bridge now stripped back and exposed, the condition of the old concrete is very much as expected.
“We haven’t found any major defects so far and are still confident that we can be finished on time.
“We are aware of the frustration for drivers due to the additional traffic on some routes, and apologise for any delays or disruption to journeys.
“The team is fully focused on completing our works as quickly as possible and getting things back to normal.”