Terra Associates, Inc. Share: Engineering, Civil Terra Associates, Inc. Visit Website 1445 N. Loop West, Ste. 450 Houston, TX 77008 (713) 993-0333 (713) 993-0743 (fax) About Map About With over 100 years of combined engineering experience, TERRA specializes in:• Engineering - Civil • Traffic & Transportation • Landscape Architecture • Construction Manage What's Nearby? Distance: 5 10 15 20 25 50 mi.