Pads and Shops Available at brand new grocery anchored shopping center in Avondale! The Market at Tres Rios is a 28 acre shopping center that will be home to a market leading grocer, 3 multi-tenant shops buildings, and 7 retail pads. The location sits just north of the esteemed 1,150 acre master planned community of Alamar, which will bring over 4,000 new residences at full buildout.