After falling to the Colts at home, the Texans visited Pittsburgh for the first time since 2008, doing battle on Monday night with the Pittsburgh Steelers. While the Texans defense held off the Steelers' offense, the offense managed to gain much-needed momentum in the 1st quarter, a place they had previously struggled. The Texans scored first with 5:55 left after Blue caught a pass from Fitzpatrick to lead 7-0. In the second quarter Ben Roethlisberger was sacked by Watt and fumbled the ball near midfield. Houston capitalized on the turnover with a Bullock 39 yard field goal to lead 10-0 with 13:39 left in the 2nd. Houston continued their trend of scoring on each possession with another Bullock field goal (38 yards) to extend their lead to 13-0 with 7:20 left; part of the same drive included the Texans converting on a 4th down and inches. The Steelers finally managed to get on the board with a 44-yard field goal from Shaun Suisham to trail 3-13 with 3:13 left. After forcing a 3 and out for the Texans, the Steelers struck back with a 35-yard touchdown pass from Roerhlisberger to Bryant to trail 10-13 with 1:27 left. After a Houston fumble at their 4-yard line, Pittsburgh took their first lead of the night to lead 17-13 with 1:03 remaining. The Steelers scored off of another Texans turnover after a Fitzpatrick pass was deflected to extend their lead with 0:14 left in the half. Following a series of Houston turnovers in arguably the worst-played three minutes in NFL history, Pittsburgh lead 24-13 at the half. After Suisham made two fourth quarter field goals, from 30 yards (27-16) and 40 yards (30-16), respectively, The Texans tried to rally for the remainder of the game with a Foster TD catch to make it 30-23, and almost pulled off an onside kick recovery, but Pittsburgh managed to avoid a disaster. This was the first game since week 2 against the Raiders that the Texans scored in the 1st quarter. However, with their 3rd straight loss, the Texans fell to 3-4.
Question: How many points did Pittsburgh lead by at the end of the first half?
Answer: 11