Bad decisions and bad penalties turned what could have been a great road trip into a so-so one in the Bruins’ trip finale in Seattle on Tuesday.

The B’s dropped a 7-4 decision to the Kraken and finished the trip at 2-2-1.

It was clear that the B’s did not have their thinking caps available right off the bat but it was a fateful final two minutes in the second period, when they gave up two self-inflicted goals, that did them in.

The B’s will travel home on Wednesday and get right back to work at the Garden with a game against the Calgary Flames to start a five-game homestand. If they want to continue their push for a playoff spot, they desperately need find some traction on Causeway Street because teams in the Atlantic Division are starting to create some space. The third-place Canadiens are six points ahead of the B’s. They’re still only three points out of a wild card spot but they need to get going.

The B’s were facing the hot Kraken (7-0-1 in their previous eight) with some lineup tweaks. With Hampus Lindholm out with an undisclosed injury, Henri Jokiharju drew back in for the first time since he was injured on November 28. Tanner Jeannot, who missed the previous four games, was also back and Mikey Eyssimont came out.

The new faces couldn’t prevent the same old problem. As they have so often done this year, they dug themselves a hole with back-to-back penalties in the opening period. First, NHL penalty leader Nikita Zadorov was called for neutral zone interference. Then, just eight seconds into the kill, Jeremy Swayman took an ill-advised tripping penalty on Jordan Eberle, giving the Kraken a 5-on-3 for 1:52.

The Kraken didn’t need all that time. Quickly off the draw, Eberle got his revenge when he grabbed a rebound at the side of the net and flipped an easy goal into the net at 8:50 of the first.

But the B’s killed off the second penalty and scratched back with a pretty goal before the period was out at 12:47.

From his own zone, Zadorov made a terrific indirect pass off the end boards behind the Seattle net that David Pastrnak was able to collect deep on the right wing. Just when it looked like he was going to take it around the net, Pastrnak surprised goalie Joey Daccord and slipped his 18th of the year into the shortside.

The B’s almost gave it right back when they gave up a 2-on-1 but Mason Lohrei made a nice break-up of Chandler Stephenson’s crossing pass.

The Kraken regained the lead early in the second period only to have the B’s tie it up again, before disaster struck late in the period.

On the Seattle goal, Jonathan Aspirot tried to keep an aerial puck in the offensive zone but he couldn’t corral it and the Kraken went off on an odd-man rush. In a slow developing play, it looked like the B’s had gotten back in time, but Berkly Catton scored his first career NHL goal on bad-angle shot from the bottom of the right circle that somehow found its way between Swayman’s pads at 2:48.

The B’s answer came at 6:28 and, again, it was Pastrnak. He handed the puck off to Charlie McAvoy just inside the blueline as McAvoy took it down the right wing and Pastrnak went down the left. McAvoy took it deep, almost too deep, but he was able to sneak a pass all the way through the slot for Pastrnak, who had an empty net for his 19th.

Swayman made a two great saves on Matty Beniers, one all alone in the slot and another on a break-in, and then the Fraser Minten earned the B’s first power play. They did everything but score, yet it felt like they were taking control of the game.

Then they saw the game get away from them in the final two minutes of the second period.

On the first one, Lohrei lost a battle behind the net to Tye Kartye, who fed Ben Meyers in front and he blasted it shortside past Swayman with 1:37 left in the period.

Then came the killer. Alex Steeves was called for an offensive zone slashing. It looked like they were going to get into the room down by just a goal, but Jared McCann’s slapper from well above the right circle beat both Swayman and the clock, crossing the line in the final second of the period.

Despite the two daggers, the B’s started the third period like they wanted and earned a quick power play but again they could not cash in against the 32nd-ranked penalty kill.

The B’s kept coming but Daccord made some excellent saves, including one on Pavel Zacha right in front of the net.

The Kraken finally snuffed out any real hope of a comeback on a Kaapo Kakko goal off a 2-on-1 at 10:21. Catton then scored his second of the night with a PP goal at 14:20 to make it a four-goal spread.

The B’s did try to make respectable.  Lohrei added one on the next shift. The B’s made the Kraken sweat a little bit. Viktor Arvidsson scored a power-play goal with 2:22 left in regulation but Kakko finished it off with an empty-netter.