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130 Point West Blvd, St. Charles, MO 63301 Office Locations
SCI Engineering serves clients throughout the Midwest from three strategically-located offices surrounding the St. Louis metro area and an office in Rolla, MO. Click here for a Map of our locations.

Contact Information
St. Charles, Missouri
William J. Guerdan, P.E.
Senior Vice President

Karl E. Ruhmann, P.E., R.G
Vice President
.
130 Point West Blvd.
St. Charles, MO 63301
Phone: 636-949-8200
Fax: 636-949-8269
 

O’Fallon, Illinois
Mark A. Harms, P.E.
President

Scott Harding, CPSS/SC
Vice President

650 Pierce Boulevard
O’Fallon, IL 62269
Phone: 618-624-6969
Fax: 618-624-7099


Union, Missouri
Anthony J. Kreutz
Vice President

47 St. Andrews Drive
Union, MO 63084
Phone: 636-584-7991
Fax: 636-584-7966
 

Rolla, Missouri
Matthew E. Jung
Branch Manager

1114 North Bishop
Rolla, MO 65401
Phone 573-426-4901
Fax 573-426-4853


Geotechnology SCI Engineering, 130 Point West Blvd, St. Charles, MO 63301