Full Breakdown
Centennial Mills Demolition Planned in Portland’s Pearl District
8/18/2026, 1:09:47 AM
Core Event – Controlled Explosives to Bring Down Water Tower
The City of Portland will use controlled explosions on an upcoming Monday to collapse the water-tower structure at the 116-year-old Centennial Mills warehouse in Northwest Portland’s Pearl District. Crews will clear a 300-foot radius around the building, issue a text alert about an hour before the first blast, sound sirens three minutes and one minute prior, and give a verbal five-second countdown before four simultaneous detonations. After the tower is removed, contractors will dismantle the remaining walls, a process that could take up to two weeks to reduce the building to half its current height.
Background & Context – Fire-Damaged Historic Site
A fire earlier this month severely damaged the historic warehouse, prompting concerns about structural instability and the potential release of hazardous materials such as lead and asbestos. The building’s age and the recent blaze have led city officials to deem a controlled demolition the safest option.
Official Statements & Responses – Safety Measures Emphasized
City officials stress that no residential structures lie within the 300-foot exclusion zone and that Fields Park will remain closed during the operation. Residents are advised to stay indoors during and immediately after the blasts, keep windows closed, and use an N-95 mask if they must exit their homes. The city will issue a follow-up alert once the initial demolition stage is complete and has provided a public information page for ongoing updates. Mental-health support is offered via the 988 crisis hotline for anyone distressed by the explosions.
Community Concerns – Resident Voices
Local residents express uncertainty about the duration of indoor sheltering and the quality of air after the blasts. Some rely on information from their building’s leasing office, while others call for more direct communication from city authorities regarding exact timing and safety guidance.
Verbatim Quotes
- “How long does this kind of last and what’s the air quality going to be like,” — Pearl District
- “We’ve heard a lot of rumors about asbestos and just air quality as [Devin],” — Courtney France Kennedy, pearl district resident
- “A lot of the communication that we’ve had has come from our leasing office of the building that we live in, which has been helpful, but just knowing exactly when it’s gonna happen, a lot of that information we’ve had to seek out ourselves,” — Courtney
