This information is preliminary and subject to change.
Release date 5 August 2025
On July 5, 2025, about 2:26 p.m. local time, southbound Illinois Central Railroad (ICR) mixed freight train M30271-05 derailed 22 railcars on the Yazoo subdivision at milepost 97.63 in rural Glendora, Mississippi.[1] One of the derailed railcars, a Department of Transportation Specification 111A100W1 tank car loaded with the hazardous material benzene, breached and caught fire.[2] There were no reported fatalities or injuries, and about 160 people were evacuated in a 1 mile radius of the accident. ICR estimated damages to be about $1.5 million. At the time of the accident, visibility conditions were clear, and the weather was 90°F with no precipitation.
The crew of train M30271-05 consisted of one engineer and one conductor. The train departed Memphis, Tennessee, around 11:08 a.m., destined for Baton Rouge, Louisiana, and was a key train composed of 139 railcars (59 loaded railcars and 80 empties, including 11 residue cars), with 23 hazardous materials tank cars.[3] Of the 23 hazardous materials railcars, 1 was loaded with compressed gas (refrigerant), 16 were loaded with benzene, and 6 were loaded with petroleum. The train was traveling about 29 mph on a right-hand curve near milepost 97.63 when it experienced a train-initiated emergency brake application and derailed railcars 29 through 50.[4]
A few days before the accident, on July 2, 2025, an ICR autonomous track inspection vehicle noted two superelevation track defects in the area of the derailment, which ICR reported were addressed by a track surfacing unit on July 3.[5] In accordance with operational procedure, ICR subsequently placed a 10-mph speed restriction on that segment of track for the next two trains and then raised it to 30 mph on July 3.[6] At the time of the accident, the speed restriction of 30 mph was still in place for the segment of track on which the accident occurred.
Local emergency responders and ICR hazardous materials responders extinguished the fire around 11:30 p.m. on July 5, and the evacuation order was lifted shortly thereafter. ICR contractors removed about 25,000 gallons of product from the breached benzene tank car. The product included both the material itself and water used in firefighting activities.
While on scene, the National Transportation Safety Board reviewed data from locomotive event recorders and inward- and outward-facing image recorders, inspected train equipment and track structures, reviewed ICR’s engineering standards and procedures, and completed interviews.
The investigation is ongoing. Future investigative activity will focus on ICR’s procedures related to track inspections, engineering defect mitigation, employee training and testing, and emergency response. derailment, which CN reported were addressed by a track surfacing unit on July 3.[5] In accordance with operational procedure, CN subsequently placed a 10 mph speed restriction on that segment of track for the next two trains and then raised it to 30 mph on July 3.[6] At the time of the accident, the speed restriction of 30 mph was still in place for the segment of track on which the accident occurred.
Parties to the investigation include:
- the Federal Railroad Administration;
- the Pipeline and Hazardous Materials Safety Administration;
- Canadian National Railway;
- the International Association of Sheet Metal, Air, Rail and Transportation Workers;
- the Brotherhood of Locomotive Engineers and Trainmen; and
- the Brotherhood of Maintenance of Way Employes Division.[7]
[1] (a) All times in this report are local. (b) Illinois Central Railroad is a subsidiary of Canadian National Railway.
[2]
Benzene is an organic chemical in hazard class 3 (flammable liquids).
[3] (a) A key train is defined in federal regulation as a train with any one of the following components: at least one tank car containing anhydrous ammonia, ammonia solutions, or material designated as a poison or toxic inhalation hazard; 20 railcar loads of any combination of hazardous material; or one or more railcar loads of spent nuclear fuel or radioactive waste. (b) A residue car is an empty tank car that has not yet been refilled or cleaned of hazardous material and purged to remove any hazardous vapors.
[4] A train-initiated emergency brake application occurs upon separation of the air brake pipe that runs through the train.
[5] (a) An autonomous track inspection vehicle is a fully automated rail car, integrated into normal railroad operations, that tests and monitors real-time geometric track parameters and conditions. (b) A superelevation defect on railroad tracks refers to a problem with superelevation, or the elevation difference between the inner and outer rails on a curved section of track. Superelevation is engineered to counteract the centrifugal force acting on trains as they navigate curves. (c) A railroad surfacing unit restores and maintains the geometry of railway tracks.
[6] Normal track speed was 70 mph for passenger trains and 60 mph for freight trains.
[7] The Brotherhood of Maintenance of Way Employes Division spells employees with one final e.