Aerial photograph of train 540-462 derailed tank cars. (Source: CPKC.)

​​ Aerial photograph of train 540-462 derailed tank cars. (Source: CPKC.) 

Canadian Pacific Kansas City Railway Train Derailment and Hazardous Materials Release

What Happened

​On August 15, 2025, about 2:01 p.m. local time, eastbound Canadian Pacific Kansas City Railway (CPKC) mixed freight train 540-462 derailed 24 railcars that were carrying hazardous materials while traveling on main track 1 of the CPKC Watertown Subdivision near milepost (MP) 141.8, in Reeseville, Wisconsin. No injuries or evacuations were reported. CPKC estimated the damages to be $3,634,183. Visibility conditions at the time of the accident were clear with no precipitation; the temperature was 85°F. ​

What We Found

​While a final report for this investigation was not developed, the information from items in the investigation docket including documented damage to the DOT-117 tank cars will be used in future investigations, reports or other mission-related activities. 

We produced an investigation close-out memorandum, which can be found in our docket. 

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