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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation


Document Series
Accident Investigations
Federal Railroad Administration
Accident Date
Accident Type
Derailment (DRM)
Railroad Name
Union Pacific

Separ, NM
United States

Accident Number
Investigation Status
Subject Accident Investigations
Union Pacific Railway; Separ, New Mexico; Derailment; 3-Pack Spine Car; Broken Flange; Amtrak Route

On May 24, 2021, at approximately 2:56 a.m., MDT, the Union Pacific Railroad (UP) intermodal train
ZMQLC-23 (Train 1) handling 166 loads, 0 empties, at 9,895 feet and 6,766 trailing tons, derailed 38
intermodal cars while moving west (timetable direction) along the Lordsburg Subdivision at an estimated
speed of 65 mph at Milepost (MP) 1170.1, approximately 22 miles east of Lordsburg, New Mexico, within
Grant County.

Last updated: Monday, May 24, 2021