Engineers - Civil, Environmental, Mechanical & Consulting go Results Found: 2 Button group with nested dropdown Halff Associates, Inc. Halff Associates, Inc. 5000 W. Military Hwy. Ste. 100 McAllen TX 78503 (956) 664-0286 Cruz-Hogan Consultants, Inc. Cruz-Hogan Consultants, Inc. 2290 West Pike Blvd Suite 102 Weslaco TX 78596 (956) 854-4227