A road on one of the major commuter and school bus routes into Spalding will close on Tuesday – the day children return to school.
Lincolnshire County Council is closing Church Street, Pinchbeck, the road where St Mary’s stands, for “essential” roadworks unless there’s bad weather.
A council spokesman said the authority tried to get the work done on an earlier date, but had to wait for contractors to be available.
The work involves patching the carriageway.
The council says bus companies have been told and they are making minor changes to their routes.
Diversion routes are via the B1356, A152 link road, A16 and B1180 Wardentree Lane.
The council has apologised for any disruption caused.