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Firm
License
Firm Name Address City State Zip Expiration Date
(mm/yy)
3195 Shannon & Wilson, Inc. 120 S. Central Ave., Suite 400 Clayton MO 63105 09/30/25
4072 CH2M HILL Engineers, Inc. c/o CT-BL 120 S. Central Ave, Ste 400 Clayton MO 63105 09/30/25
4718 Constellation Energy Solutions, LLC 120 S. Central Ave., Ste 400 Clayton MO 63105 09/30/25
3389 Hellmuth, Obata & Kassabaum, Inc. 10 South Broadway Ste. 200 St. Louis MO 63102 09/30/25
4291 Buescher Frankenberg Associates, Inc. 103 Elm Street Washington MO 63090 09/30/25
3963 G&W Engineering Corporation 138 Weldon Parkway Maryland Heights MO 63043-3102 09/30/25
4780 Westport Pools, Inc. dba Landmark Aquatic 156 WELDON PARKWAY Maryland Heights MO 63043 09/30/25
4102 Sachs Electric Company 1572 Larkin Williams Road Fenton MO 63026 09/30/25
4486 Case Engineering, Inc. 796 Merus Ct Fenton MO 63026 09/30/25
2400 MITEK Inc. D/B/A MiTek USA 16023 Swingley Ridge Road CHESTERFIELD MO 63017 09/30/25
5575 The Engenuity, LLC 16305 Swingley Ridge Rd, Suite 100 CHESTERFIELD MO 63017 09/30/25
792 CORRPRO COMPANIES, INC. 580 Goddard Ave. Chesterfield MO 63005 09/30/25
3546 SSC Engineering, Inc. 18207 Edison Avenue Chesterfield MO 63005 09/30/25
3994 Stock & Associates Consulting Engineers, Inc. 257 Chesterfield Business Pkwy Chesterfield MO 63005 09/30/25
2067 HANSON PROFESSIONAL SERVICES INC. 1525 S. Sixth St. Springfield IL 62703 09/30/25
3094 APPLIED PAVEMENT TECHNOLOGY, INC. 115 W. MAIN ST., SU. 400 URBANA IL 61801 09/30/25
3166 ROHN PRODUCTS, LLC #1 FAIRHOLM AVENUE PEORIA IL 61603 09/30/25
2014 ALLIED DESIGN ARCHITECTURAL & ENGINEERING GROUP, P.C. 100 S. PERSHING P.O. BOX 110 MORTON IL 61550 09/30/25
5269 IMEG Consultants Corp 623 26th Ave Rock Island IL 61201 09/30/25
5565 SUBSTATION ENGINEERING SOLUTIONS LLC 6600 N Lincoln Ave, Suite 412 LINCOLNWOOD IL 60712 09/30/25
2503 A. EPSTEIN & SONS INT`L, INC. 600 W. FULTON STREET CHICAGO IL 60661 09/30/25
2047 COLLINS ENGINEERS, INC. 550 W. Jackson Suite 1200 CHICAGO IL 60661 09/30/25
4379 Primera Engineers, Ltd. 550 W. Jackson Blvd, Suite 600 Chicago IL 60661 09/30/25
5336 Nest Builders Inc dba dbHMS 306 W Erie St Suite 600 Chicago IL 60654 09/30/25
5372 Amped I LLC 1801 West Warner Avenue, Suite 300 Chicago IL 60613 09/30/25