Full Breakdown
Historic Portland Warehouse Fire Threatens Collapse and Disrupts Transit
8/4/2026, 1:15:33 PM
Core Event: Blaze Engulfs Centennial Mills Warehouse
A first-floor fire ignited just before 4 p.m. on Sunday in the vacant Centennial Mills warehouse, a 116-year-old timber structure in Portland’s Pearl District. The blaze quickly engulfed the interior, forcing Portland Fire & Rescue to adopt a defensive strategy and fight from the riverbank and the air. Crews kept a safety perimeter of roughly one-and-a-half times the building’s height while water was poured through windows to cool hot spots. No injuries were reported because the building was empty.
Background & Context
Centennial Mills, listed on the city’s “Unsafe Buildings” program, had been slated for a waterfront revitalization project coordinated by the Human Access Project. Prior to the fire, police had responded to squatting concerns, and the fire department had dealt with three smaller fires at the site over the previous 18 months.
Data & Statistics
- Age and construction: Built in 1910 with 18- to 20-inch heavy timber flooring that originally held the exterior walls together.
- Fire-fighting resources: 88 fire-crew members responded, and nearly 100 firefighters worked the incident overall.
- Structural risk: Internal stairs had been removed, and the timber “web” that supported the building has collapsed to the basement, creating a chimney-like void with ongoing hot spots.
- Transit impact: Northwest Naito Parkway between 9th and 15th avenues remains closed; the adjacent rail corridor used by Amtrak and a freight operator is suspended.
- Water-tower hazard: A massive cylindrical water tower sits atop the roof; officials warned it could roll like a bowling ball if it detaches.
Official Statements & Responses
Portland Fire & Rescue Public Information Officer Rick Graves explained that the building’s deteriorating interior and massive timber framing made interior firefighting unsafe. Division Chief Mark Tilden said the building’s inclusion in the “Unsafe Buildings” program dictated a defensive strategy focused on containing the fire to its origin. The Oregon Department of Environmental Quality is evaluating a possible asbestos release, and the Scappoose Fire District is deploying a drone to create a 3-D map for engineers and investigators.
On-the-Ground Reports
Local resident Mara Christensen described watching the fire “spiral through the building” and called the loss of the “iconic” structure “sad.” Aaron Pulley, who lives across the street, recalled a “pretty chaotic afternoon” as flaming wood debris fell toward his balcony, prompting neighbors to point out the danger to firefighters.
Verbatim Quotes
- “There are holes in the floor. There are stairwells that have been removed,” — Rick Graves
- “When that comes down, if that doesn’t flatten itself and stop where it is, that cylindrical object will roll like a bowling ball,” — Rick Graves
What’s Next
The Scappoose Aviation Team will continue drone flights to generate detailed 3-D imagery for the city’s building engineer and the fire-investigation unit. Demolition cannot begin until the structural assessment is complete, and officials warned that the Naito Parkway closure could extend up to a week, depending on the stability of the remaining timber and the water tower. Rail service will remain suspended until safety officials deem the corridor secure.
