Gertrude AvCity of Armadale » Champion LakesDo you (or did you) live on Gertrude Av in Champion Lakes, WA? How has Gertrude Av changed over the years? What was Gertrude Av like in the early days? Who were the original residents of Gertrude Av? Ask a question or tell your story below... April 17, 2017 by PerthMETRO.net zoom out · satellite view · hybrid (zoom out) Rate this street If you would like to be a custodian/moderator of Gertrude Av, please contact us.