Man's co-workers surprise him with billboard to welcome family's first baby girl in 137 years

“My mother just went nuts. My mom always wanted a daughter,” Will told ABC News. “She was absolutely ecstatic. She could not believe it.”

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After the couple returned to their home in Bluffton, South Carolina, with their baby girl, a coworker told Will to drive toward Savannah, Georgia, and turn around and drive home. The coworker said there was a surprise waiting.

"I had an idea what it was going to be," Will, the head of sales for Marlin Outdoor Advertising, told The Island Packet. "We have a lot of billboards in that area."

Will, 38, had also received more than a dozen texts from friends who had driven by the billboard.

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"When I first saw it, it was an 'Oh my God' moment," Will told  ABC News. "It is so pink, so large. It's pretty obnoxious, I hate to say. It is so in your face, you wouldn't believe it."

Kelen said she thinks the idea was cute and looks forward to telling her daughter about the billboard when she’s older.

The company has 900 billboards in the two states, he said, and his coworkers used one of them to display a birth announcement for Carter. The 12-foot-tall, 24-foot-wide announcement sits off Highway 315 and features a picture of the little girl with a message that reads, “Welcome to the World Carter Louise Settle.”

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Will said his sales route takes him as far north as Rock Hill, South Carolina, and as far west as Statesboro, Georgia, meaning he often gets to drive past the billboard and see his daughter’s face.