The most famous road trip since “Animal House” rocks on.

Big Ben, The Bus and all those Terrible Towels will make the next stop on their wildly successful road trip at the Super Bowl in Detroit, thanks to a 34-17 dismantling of the Denver Broncos yesterday in the AFC title game.

“We were sitting, looking at an outside shot to be in the Super Bowl,” Steelers linebacker Clark Haggans said. “This is an unbelievable feeling to be here right now.”

Unbelievable and almost unprecedented.

Led by 275 yards and two passing touchdowns from Ben Roethlisberger and a touchdown by Jerome Bettis, the Steelers became the first team since the 1985 Patriots to win three road games en route to the Super Bowl. Counting the regular season, they’ve played five of their final six away from Pittsburgh. The Steelers became the first team to beat the Nos. 1, 2 and 3 seeds in the playoffs.

While there’s no John “Bluto” Blutarsky — the character who called for a road trip when things got tough for the Delta House fraternity in “Animal House” — this Pittsburgh group has plenty of characters of its own.

There’s Bettis, The Bus, who stuck around for a 13th year with hopes of playing in his first Super Bowl, in his hometown of Detroit.

There’s Roethlisberger, Big Ben, the second-year quarterback who looked every bit the veteran in this one, completing 21-of-29 passes and keeping the Steelers going on 6-of-7 crucial third-down situations in the first half.

There’s the coach, jut-jawed Bill Cowher, who worked the sideline in his usual manner, jabbing his finger at Bettis, then hugging him, smiling and scowling, too. This was tough love at its best — and good enough to move the Steelers back to the Super Bowl for the first time since 1995.

And all those loyal Pittsburgh fans. An estimated 8,000 came to Denver and they stayed well after the game, waving their Terrible Towels in the corner of Denver’s Invesco Field until security finally had to ask them to leave.

“It feels great today, I’ll tell you that,” owner Dan Rooney said. “The coach already told me we’re going to the Super Bowl to win it, not just to be there.”

Outschemed, outplayed and pushed around all day, the Broncos (14-4) shuffled off to their locker room, heads down, after their first home loss in 10 tries this season.

“We did not complete the mission and it’s frustrating,” linebacker Ian Gold said. “But anytime you make it to the AFC championship game and you lose, you hope to lose to a team like that.”

Indeed, it’s hard to deny the Steelers (14-5) are deserving. Their next game will be against Seattle for the fifth championship — the elusive “One For The Thumb” — the franchise couldn’t get in the 1970s heyday of Bradshaw, Swann, Stallworth and Harris.