The podium finish is the fourth straight medal for the QAS bobsleigh pilot, who has finished in the top-five in every World Cup event this season.
In the first run Walker was tied with Cynthia Appiah of Canada for the second fastest time of the round in 54.41 seconds, and in the second run had the third fastest time completing the run in 54.53 seconds.
Her two-run combined time of 1:48.94 was 0.42 seconds behind event winner Kaysha Love of the USA, with 2018 Olympic gold medallist Lisa Buckwitz of Germany .01 behind Walker in third.
After five World Cup events this season, Walker is ranked equal second on the standings on 1004 points along with Love, with Buckwitz leading the pair on 1043 points.
“It's been really fun here this week, I haven't slid here since 2019, and I actually couldn't remember the track last week when we came here for training ahead of the World Cup,” said the 31-year-old Olympian from Queensland.
“My coach Pierre Lueders and I both had to relearn it together as he hasn't slid here since 1998, so it was a fast learning curve for both of us.”