SCI Engineering

Office Locations

SCI Engineering serves clients throughout the Midwest from four strategically-located offices surrounding the St. Louis metro area and offices in Springfield and Rolla, Missouri.

For driving directions to all the offices, click here.


Contact Information
St. Charles, Missouri William J. Guerdan, P.E. Karl E. Ruhmann, P.E., R.G. 130 Point West Blvd. St. Charles, MO 63301 Phone: 636-949-8200 Fax: 636-949-8269		O’Fallon, Illinois Mark A. Harms, P.E. 650 Pierce Boulevard O’Fallon, IL 62269 Phone: 618-624-6969 Fax: 618-624-7099
Union, Missouri Anthony J. Kreutz 47 St. Andrews Drive Union, MO 63084 Phone: 636-584-7991 Fax: 636-584-7966		St. Louis, Missouri Scott D. Harding, CPSS/SC 9701 Green Park Industrial Drive St. Louis, MO 63123 Phone: 314-845-6677 Fax: 314-845-6667
Springfield, Missouri Matt Jung Branch Manager 4145 S. McCann Court, Suite F Springfield, MO 65804 Phone:417-823-0355 Fax: 471-823-0568