A training error caused an unusual message to appear Tuesday on a traffic sign on Interstate 5 in Washington, officials with the state Department of Transportation said.

Reddit user Bruceinc posted a photo of the sign, which said "U SUCK," on the social media site Tuesday.

“If I had to take a guess it’s probably a worker messing around while doing maintenance on the sign,” he wrote. “You can see the work trucks to the right of the sign in the photo.”

The message appeared on a traffic sign on I-5 approaching Washington State Route 518 near SeaTac.

After the post caused a flurry of comments on Reddit, WSDOT responded, apologizing for the "inappropriate message." Officials said it was “clearly a mistake” and that they are taking steps to ensure the situation doesn’t happen again.

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Angie McBrayer, ex-wife of James Aaron McBrayer, leans her head on her son Sam McBrayer as she and her three children and two grandchildren (from left) Jackson McBrayer, 3, Piper Jae McBrayer, 7, Katy Isaza, and Jordan McBrayer, visit the grave of James McBrayer, Thursday, November 20, 2025, in Tifton. He died after being restrained by Tift County sheriff's deputies on April 24, 2019. His ex-wife witnessed the arrest and said she thought the deputies were being rough but did not imagine that McBrayer would die. (Hyosub Shin/AJC)

Credit: HYOSUB SHIN / AJC