The Bears didn't need a thrilling last-minute comeback for the fourth straight game, but they still staged an impressive rally Sunday at Soldier Field.

Trailing the Steelers 21-14 late in the second quarter, the Bears scored 17 unanswered points to take a 31-21 fourth-period lead and hung on for a 31-28 victory.

Caleb Williams threw three touchdown passes and the injury-depleted defense generated two key takeaways that the offense converted into 14 points as the Bears improved to 8-3 with their fourth straight win and eighth victory in nine games.

For the second straight week, cornerback Nahshon Wright made a sensational leaping interception. His pick on the Steelers' first possession of the game came at the Bears' 44 and set up Williams' 5-yard touchdown pass to DJ Moore.

The TD capped an 8-play, 56-yard drive and gave the Bears a 7-0 lead.

The Steelers responded with two touchdowns in :46 to take a 14-7 lead. First, receiver DK Metcalf's 6-yard touchdown run tied the score with :30 left in the first quarter, capping a 13-play, 95-yard drive. Two plays later, outside linebacker T.J. Watt sacked Williams in the end zone, forcing a fumble that outside linebacker Nick Herbo recovered for a TD.

The Steelers generated a second straight takeaway as defensive end Yahya Black forced and recovered a D'Andre Swift fumble at the Pittsburgh 48.

But the Bears defense stopped tight end Connor Heyward short of the line to gain on a fourth-and-1 tush push, turning the ball over on downs at the Chicago 30.

The offense followed with an impressive 11-play, 70-yard drive that culminated in Williams' 12-yard TD pass to Colston Loveland, knotting the game 14-14 with 3:56 remaining in the first half. The drive was sustained by Williams' 8-yard run on fourth-and-1 from the Chicago 39 and was highlighted by Williams' 22-yard pass to Rome Odunze and Luther Burden III's 15-yard run on a double reverse.

The Steelers took a 21-14 lead on Jaylen Warren's 1-yard TD run with 1:19 to play in the first half. The touchdown came one snap after Gainwell's 55-yard run. On fourth-and-1 from the Pittsburgh 34, the Steelers set up in a tush push formation. Heyward took the snap and handed off to Gainwell, who raced around right end.

Cairo Santos' 47-yard field goal as time expired in the first half cut the deficit to 21-17. The kick was set up by Williams' 19-yard pass to Burden.

On their first possession of the second half, Williams hit Moore down the seam for a 25-yard TD pass, giving the Bears a 24-21 lead midway through the third period.

The defense generated its second takeaway via a strip-sack by Montez Sweat, who forced and recovered a Rudolph fumble at the Chicago 46.

The offense again converted the turnover into a touchdown as Kyle Monangai's 2-yard scoring run widened the margin to 31-21 early in the fourth quarter.

The Steelers closed the gap to 31-28 on Rudolph's 3-yard TD pass to tight end Pat Freiermuth with 6:27 remaining.