Terracon once again was recognized in the Engineering News-Record (ENR) Top 150 Global Design Firms list. The company’s ranking rose from 80 for 2014 to 71 for 2015. See the complete list here. ENR performs annual surveys of key segments, and ranking companies engaged in general contracting, specialty contracting, engineering, architecture and environmental services, among other specialties. The rankings, based on annual revenue at home and abroad, are further divided into specific market categories.