DALLAS - A sheriff's deputy found himself in the role of doctor after he assisted a mother as she gave birth on Interstate 45 at R.L. Thornton Freeway.

Deputy Brian Sherman, with the Dallas County Sheriff's Department, got quite the surprise after he pulled over a speeding car Sunday with Danielle Dansby in labor in the back.

"I was like, 'Pull over. Pull over. He might can help us,'" Dansby said. "And sure enough, he did. We thought he was going to escort us, but he told us just to do everything right there in the car."

While Sherman said he has two girls of his own, he said Sunday's experience was a new one for him.

"I didn't get to participate like I did today," he said with a smile across his face. "So, that was a different experience."

Kemia Mendoza, who was taken to Baylor Medical Center, weighed in at 6 pounds, 13 ounces and was doing well. Mother Danielle Dansby and father Derek Mendoza, both 20, were also fine, Sherman said.

The Associated Press contributed to this report