PITTSBURGH — Mike Tomlin wants to be part of the post-Ben Roethlisberger era in Pittsburgh.

The Steelers on Tuesday signed their longtime coach to a three-year contract extension that runs through the 2024 season.

Tomlin is 145-78-1 in 14 years with the Steelers, winning one Super Bowl and going to another. The franchise has reached the playoffs nine times during Tomlin’s tenure and captured its seventh AFC North title under him in 2020.

“I am extremely grateful for this contract extension and want to thank Art Rooney II and everyone in the organization for the support in my first 14 seasons,” Tomlin said in a statement. “We have a goal of winning the organization’s seventh Super Bowl championship, and I couldn’t be more enthusiastic about this upcoming season.”

The Steelers went 12-5 in 2020, winning their first 11 games before stumbling down the stretch, including a blowout loss to Cleveland at home in the first round of the playoffs. The team is in the midst of a mini-overhaul, particularly on offense after two assistants were let go and center Maurkice Pouncey and tight end Vance McDonald retired.

Still, Roethlisberger restructured his contract to lessen his salary cap hit, a move that helped the Steelers free up enough money to persuade wide receiver JuJu Smith-Schuster to return on a one-year deal.

The extension likely means Tomlin will stick around for whatever happens after the 39-year-old Roethlisberger retires. There is no succession plan in place for the future Hall of Famer, though Tomlin opting to sign the extension means he intends to be part of the process whenever Roethlisberger calls it quits.

The agreement deepens Pittsburgh’s extraordinary commitment to its head coaches. The Steelers have had just three men in charge since 1969.