Closed: Tres Amigos on Loop 360 Matthew Odam @odam Wednesday Oct 12, 2016 at 12:01 AM Sep 23, 2018 at 9:04 AM Chicken Enchiladas with sour cream sauce at Tres Amigos.Longtime local Tex-Mex chain Tres Amigos has closed its location at 1801 Loop 360. The restaurant still has locations at 7535 U.S. 290 and 1807 W. Slaughter Ln.