Smith gave Boston an early lead with a power-play goal 2:31 into the game. Loui Eriksson passed to Soderberg, who found Smith in front for a one-timer that got past Ward for his third goal.
Soderberg redirected a shot by defenseman Dennis Seidenberg to put Boston ahead 2-0 midway through the first period.
Since the 2010-11 season, the Bruins are 100-6-6 in games in which they have a two-goal lead.
The Hurricanes netted their only goal when a pass from Eric Staal went off the skate of Boston's Patrice Bergeron and caromed to Ruutu, who nudged the puck past Rask.
NOTES: With Ward activated from the injured list, the Hurricanes reassigned goalie Mike Murphy to Charlotte (AHL). . Ward is 12-12-2 against Boston in 26 games. . Carolina center Jordan Staal played in his 500th NHL game. . Boston's Loui Eriksson extended his point streak to six games with an assist on Smith's goal.
BLACKHAWKS: The league champs announced Monday they will sell limited-edition vials of melted ice from their 2013 Stanley Cup season, with proceeds going to charity.
Each vial of melted ice from the United Center will cost $99, and will include an etched number of 1 through 2,013 and a certificate of authenticity. The vials are available on the Blackhawks' website.
The Blackhawks last season won their second Stanley Cup since 2010 in six games over the Bruins. They set an NHL record for the best start to a season by recording points in their first 24 games.