Scaffolding collapsed from a Grade 11 listed building in Crowland blocking the road.
Firefighters were called to Manor House in East Street at about 4.30pm on Sunday afternoon and it is believed the scaffolding had been clipped by a passing lorry.
No-one was hurt, but there was minor damage to the properties opposite.
The scaffolding had been erected to protect the public, which is currently up for sale at £395,000 from falling masonry and roof tiles.
Scaffolders were also called to the scene to dismantle the fallen scaffolding.