Criterium-Simpson Engineers provides structural engineering,, building inspection, construction consulting, and forensic engineering services in North and South Carolina. We specialize in problems with existing buildings. Jeff Simpson, P.E. owns and operates the Charlotte office. We are part of the Criterium Engineers Network of 69 affiliated offices nationwide. Read: Our Mission Statement. Read About Our Staff: Jeff Simpson, P.E. - President Teresa Gregorius - Office Manager Main Office: 2530 B West Roosevelt Blvd. Monroe, NC 28110 Phone: 704.225-7279 or 704.321-5841 Fax: 704.225-7524