Hennessey Engineers
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Hennessey Engineers, Inc. was founded in 1971 by Timothy L. Hennessey. It was a long standing dream of his to transform the civil engineering industry and start his own firm. With his incredible passion and drive, the company was established as a civil engineering consulting firm and set out to respond to the needs of the Detroit Downriver area. Tim Hennessey had amazing passion and dedication to his projects and the personal relationship formed with clients.

His level of commitment spread company-wide, and what started with one employee has grown substantially to over 50 employees with an average tenure of 10 years or more. Now celebrating nearly 50 years of success in the business, Hennessey has expanded not only its services, but also its service area to much of Southeast Michigan. Hennessey is a privately owned corporation licensed to operate in the State of Michigan.

Today the company is owned and operated by Joan E. Hennessey, CPA and John J. Hennessey, PE, two of Tim's children.
Services
At Hennessey you will find a positive, friendly, family-centric work environment.
With challenging yet rewarding projects across communities of various scales, you will have the opportunity to expand your knowledgebase alongside a great team of people.
We are passionate about our work, and this is evident both in the office and in the field.
Our genuine family-like culture is the basis of our hard-working, growth-oriented work environment.
Hennessey is actively involved in the community attending numerous municipal functions and giving back through fundraisers and experiential learning events.
Hennessey's primary service offering, civil engineering, continues to evolve as technology advances.
Designing for public works requires our team to take on the dual role of engineer and social ambassador for which our team is well prepared and mindful of the very public nature.
Our dedicated and knowledgeable group of licensed professionals is well versed in observing and administering civil site work for municipal engineering projects and private developments.
Our construction administration staff is committed to our communities, verifying that design plans are adhered to and that construction meets community ordinances and engineering standards.
Hennessey Engineers talented and experienced in-house architectural staff provides our clients with full service architectural capabilities.
The architectural staff has experience with every type of project from residential to industrial from the smallest addition to the largest industrial complex.
Hennessey's architectural division has proved a valuable addition to our engineering and surveying capabilities in creating a cohesive design team from start to finish, with recent experience providing architectural services on a variety of public projects through creative design solutions and project management to maintain established budgets.
Hennessey is uniquely qualified in program management with a strong executive team that combines engineering and financial expertise for a total solution.
Our entrepreneurial approach to program management and breadth of over 40 years of experience allows us to maximize program potential.
The Hennessey Team project and management experience has included providing urban planning, consulting, development management, brownfield management, engineering design, construction management, construction management, legal consulting, HUD monitoring and compliance reporting.
Hennessey's use of the latest surveying equipment and an integrated design approach allows us to fulfill our clients' survey requirements quickly and accurately.
The efficient transfer of field data to engineering drawings results in quick turnarounds for those fast-track projects.
Using a global positioning system (GPS), total stations and electronic data collectors, our survey crews can quickly obtain all required site information.
Once the required site information is collected, it is electronically downloaded into our CAD work stations, enabling our design staff to produce the required drawings.
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