Rockford, Rock River Valley, Northern Illinois Engineers, Professional

Chastain & Associates LLC

6832 Stalter Dr Ste 100
Rockford, IL 61108

Paula Lawson

(815) 489-0050

Member Since: 2013

Chastain is a professional engineering firm providing a wide variety of engineering services from simple location of lot pins to multi-million dollar design and construction projects.

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Larson & Darby Group

4949 Harrison Ave Ste 100
Rockford, IL 61108

Dan Roszkowski, AIA

(815) 484-0739

Member Since: 1970

Larson & Darby Group is an award-winning, full-service architecture, engineering and interior design firm.

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Fehr Graham

200 Prairie St Ste 208
Rockford, IL 61107 3967

Joel Zirkle, PG

(815) 394-4700

Member Since: 1985

Providing surveying civil, municipal, environmental health & safety services to governmental, industrial, commercial, and residential clients in northern Illinois and southern Wisconsin.