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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In this file photo from October 2024, Atlanta Braves outfielder Jorge Soler and teammates react after losing to the San Diego Padres 5-4 in San Diego. The Braves and Soler, who now plays for the Los Angeles Angels, face a lawsuit by a fan injured at a 2021 World Series game at Truist Park in Atlanta. (Jason Getz/AJC)

Credit: Jason.Getz@ajc.com