The Sarnia Police Service (SPS) is advising the public there will be a crane visible at the back of its Christina Street facility on Wednesday.
SPS said critical building maintenance is being done on the roof.
In a media release, the department said the building's cooling tower was replaced in 2018 but the footings and steel base supports were not.
"They remain original to the building and have naturally deteriorated over time. Should those footings fail, a collapse of the cooling tower could compromise the second-floor roof and the safety of the occupants in the facility," it said.
The crane will be used to lift and remove the cooling tower out of its walled enclosure to the grade level on the Water Street side of the facility.
Over a one-week period, the footings will be replaced on the roof, and the steel structure base of the tower will be rebuilt.
When this work is complete, a crane will be used to return the tower to its original location, but onto the new footings.
Police said it's one of many backlogged capital deficiencies that must be addressed to ensure the safety and functioning of the building.
The total cost of this upgrade project is estimated at $60,000, with the footings themselves representing only a small portion of the repair cost.
There will be no disruption to the public areas or the visitor parking lot, and the front entrance will remain open and accessible during regular hours.
