With a history that dates back to 1935, Willett, Hofmann & Associates, Inc. (WHA) is an award-winning, multi-discipline, professional organization unique in both its capabilities and credibility. Licensed to provide professional civil engineering, structural engineering, architectural design and professional land surveying services, we have offered professional design and land surveying services to municipalities, townships, counties, state agencies and private enterprises for over 80 years. Our talented and diverse staff of over 50 full time employees is experienced and qualified to provide an extensive range of professional services, including structural engineering, transportation engineering, water/wastewater engineering, agricultural engineering, civil site design, architectural design, land surveying services and construction staking, observation and administration services.

Because WHA is owned solely by licensed professionals on staff, our clients frequently enjoy the benefits of working directly with an owner of the company. We are dedicated to serve our clients Ethically, Responsively and Professionally with highly trained and skilled staff—an organizational philosophy that has fostered numerous, long-standing clients, some of whom we have been serving for over 80 years.

Willett, Hofmann & Associates, Inc. is poised, capable and qualified to provide our clients a single source for a wide variety of professional design and land surveying services.

PROFESSIONAL STAFF:
19 Licensed Professional Engineers (IL, WI, IA, IN, MO, AR, LA, MS, OK, TX, AL)
 5 Licensed Structural Engineers (IL)
 2 Licensed Professional Land Surveyors (IL, WI)
 2 Licensed Architects (IL, WI, IA)
 2 Leadership in Energy and Environmental Design Accredited Professionals (LEED AP BD+C)
 1 Licensed Class A Water Operator (IL)
 1 Licensed Class I Wastewater Operator (IL)
 3 Certified Bridge Program Managers (IL, WI, IA)
 5 Certified Bridge Team Leaders (IL, WI, IA)

 1 Certified Professional Traffic Operations Engineer (PTOE)

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Much more than a professional services provider, WHA is a community advocate and regular newsmaker.  Keep pace with our people, projects and progress here.

WHA Employee Honored at the 2017 Illinois Society of Professional Engineers Annual Convention
July 21, 2017

Ron Steenken honored with "Distinguished Service Award"  more...

Willett, Hofmann Wins ACEC-Illinois 2017 Engineering Excellence Awards
February 17, 2017

City of Rockford Projects Earn Award  more...

WHA Wins Award
January 9, 2017

APWA Awards  more...