New property listed in Zone 80, Strathcona Posted on May 5, 2009 by Mark Stratton (Re/Max Real Estate) I have listed a new property at # 110 52477 Highway 21, Strathcona County in ARDROSSAN. See details here 2391 sq.ft. 2 storey located in the Ranchlands Subdivision. This 4 bedroom home is situated on 2.05 acres.