The A16 Spalding Road in Boston will be closed over the weekend.
Spalding Road will be closed to vehicles and pedestrians at the docks level crossing from 10pm tonight (Friday) until 6am on Monday, June 29, while Network Rail reconstructs the track across the road.
Signed diversions will be in place for through traffic via the A52 Sleaford Road/A52 Swineshead Road/A17 Bicker Bar to Sutterton Roundabout and vice-versa.
To avoid the closure, pedestrians and cyclists are advised to use High Street as an alternative route.
Access to businesses immediately north or south of the crossing will still be available but only from one direction.
Travellers normally using this route are advised to allow extra time for their journeys or consider other routes.