 The Steelers were about to score on their next possession when Roethlisberger threw an interception near the end zone to CB Champ Bailey.After the Broncos showed no offense in the quarter, and the Steelers missed a 40-yard field goal, the quarter ended with the Steelers' Jeff Reed kicking a 46-yard field goal.In the third quarter, Denver quickly scored with a 72-yard end around run by Javon Walker.