Chastain & Associates LLC

Chastain & Associates LLC Chastain & Associates LLC offers multi-disciplinary professional services in engineering, infrastructure, and development. Corporate Headquarters:
5 N.

With over 70 years of experience, we create infrastructures where you live, work, and play. Country Club Road
Decatur, Illinois 62521

Branch Offices:
6832 Stalter Drive, Suite 100
Rockford, Illinois 61108

517 Broadway Street, Suite 100
Paducah, Kentucky 42001

100 North Chestnut St., Suite 301
Champaign, IL 61820

330 N. Central Avenue
Paris, IL 61944

625 South Earl Avenue, Suite A
Lafayette, IN 47904

Today we remember and honor those who gave their lives in service. 🇺🇸From all of us at Chastain, we wish you a safe and ...
05/25/2026

Today we remember and honor those who gave their lives in service. 🇺🇸
From all of us at Chastain, we wish you a safe and meaningful Memorial Day.

Happy Administrative Professionals Day! Today we’re celebrating our incredible admin team—Julie, Kim, Linda, Tamra, Tere...
04/22/2026

Happy Administrative Professionals Day!

Today we’re celebrating our incredible admin team—Julie, Kim, Linda, Tamra, Teresa, and PJ. Thank you for everything you do to keep things running smoothly and support our team every day.

Your organization, dedication, and willingness to jump in wherever needed make a huge impact, and we’re truly grateful for each of you. We couldn’t do it without you! 🙌

Strong infrastructure starts with strong fundamentals.Andrew Magsam serves as a Project Engineer at Chastain, supporting...
02/28/2026

Strong infrastructure starts with strong fundamentals.

Andrew Magsam serves as a Project Engineer at Chastain, supporting transportation and land development projects across Indiana and Illinois. His experience includes roadway design, resurfacing and reconstruction improvements, environmental documentation, and 3D roadway modeling.

Andrew brings a detail-oriented approach to his work — from developing plans and calculations to reviewing quantities and design elements that keep projects moving forward. His technical precision and steady growth mindset make him a valuable part of our team.

Every successful project is built on careful planning and sound engineering decisions.

We’re glad to have Andrew’s energy and expertise at Chastain.

Infrastructure doesn’t come together without strong field leadership.Rodney Pearson, P.E., serves as a Resident Engineer...
02/28/2026

Infrastructure doesn’t come together without strong field leadership.

Rodney Pearson, P.E., serves as a Resident Engineer at Chastain, bringing more than 35 years of experience — including extensive work with the Illinois Department of Transportation. His background includes bridge rehabilitations, intersection reconstructions, interstate improvements, and complex urban roadway projects across Illinois.

Rodney oversees construction operations, documentation, and contract administration to ensure projects are built according to plan and meet rigorous quality standards. From major interchange improvements to bridge replacements and safety upgrades, his steady presence in the field helps keep projects on track and communities moving safely.

Experience in the field makes all the difference.

We’re proud to have Rodney’s leadership guiding our construction teams.

Experience matters — especially in the field.Thomas Brenner, P.E., MBA, PMP, serves as a Resident Engineer at Chastain, ...
02/28/2026

Experience matters — especially in the field.

Thomas Brenner, P.E., MBA, PMP, serves as a Resident Engineer at Chastain, bringing more than 35 years of civil engineering experience to our team. His background spans transportation, roadway reconstruction, resurfacing, and large-scale tollway improvements.

Tom has overseen complex construction projects for municipalities, IDOT, and the Illinois Tollway, managing budgets, schedules, contractor coordination, and field documentation. His role ensures that projects are built according to plan — safely, efficiently, and with long-term performance in mind.

For Tom, engineering isn’t just about design — it’s about responsible ex*****on. Seeing projects successfully constructed and opened to the public is where the work becomes real.

We’re proud to have Tom’s leadership and steady presence guiding our projects in the field.

Infrastructure shapes communities for generations — and Philip Kochuparampil is proud to be part of that impact.With thr...
02/28/2026

Infrastructure shapes communities for generations — and Philip Kochuparampil is proud to be part of that impact.

With three years at Chastain and engineering experience dating back to 2008, Philip supports projects involving roads, water systems, sewers, and stormwater facilities. His work spans essential infrastructure that communities depend on every day.

What motivates him most is the opportunity to keep learning and growing as an engineer. He takes pride in knowing that the systems he helps design become lasting parts of the community — infrastructure that thousands of people rely on daily. Contributing to projects that truly serve the public is what makes the work meaningful.

We’re glad to have Philip’s dedication and growth mindset on our team.

Great engineering is rarely a solo effort.Fred Mullard, P.E., MBA, brings 46 years of experience to Chastain — including...
02/28/2026

Great engineering is rarely a solo effort.

Fred Mullard, P.E., MBA, brings 46 years of experience to Chastain — including 20 years in the U.S. Air Force, 21 years in municipal government, and more than three years with our team. His background in Engineering Management spans public service, military leadership, and community infrastructure.

What makes Fred most proud isn’t just project success — it’s watching teams come together to solve difficult client challenges. He believes no one person has experience in every aspect of the work we do. But like a great sports team, when we back each other up and support one another, we accomplish far more together than we ever could individually.

Through his Air Force service, Fred performed engineering work in six different countries — gaining perspective on how communities around the world pursue the same goals through different paths.

That combination of leadership, humility, and global experience strengthens every team he’s part of.

We’re grateful to have Fred’s steady guidance and collaborative spirit at Chastain.

Forty years in the industry brings perspective — and F. Thomas Mathews, P.E., brings plenty of it.With three years at Ch...
02/28/2026

Forty years in the industry brings perspective — and F. Thomas Mathews, P.E., brings plenty of it.

With three years at Chastain and four decades of experience in environmental engineering, Thomas specializes in water and wastewater systems that protect public health and support growing communities. His work helps ensure essential infrastructure operates reliably, efficiently, and sustainably.

What makes him most proud? Seeing projects move from design to construction. There’s a distinct sense of accomplishment in watching plans on paper become functioning systems that serve people every day.

Experience matters in environmental engineering — especially when it comes to systems communities depend on.

We’re proud to have Thomas’s depth of knowledge and steady expertise on our team.

Some careers are measured in years. Others are measured in impact.Thomas Scott, P.E., has been with Chastain for 33 year...
02/28/2026

Some careers are measured in years. Others are measured in impact.

Thomas Scott, P.E., has been with Chastain for 33 years, joining the firm in December 1992 — just after earning his Professional Engineer license. His path into engineering began even earlier, working for a land surveyor while still in high school in the mid-1970s.

After navigating a few early-career transitions and projects across Illinois and California, Thomas made the decision to join Chastain — a move that brought long-term stability and exposure to a wide range of multi-disciplined projects across the state.

What makes him proud isn’t a single project. It’s the cumulative impact. After more than three decades at Chastain, it’s difficult for Thomas to travel through Illinois without seeing infrastructure he helped design, manage, or deliver.

That kind of legacy doesn’t happen overnight.

And if you know Thomas, you know his passion for railroads. He’s been a life member of the Monticello Railway Museum since 1966 — the museum’s founding year — and has remained actively involved ever since.

We’re grateful for the experience, steady leadership, and history Thomas brings to our team.

Floodplain management works best when it’s accurate, practical, and grounded in real-world understanding.Liana Winsauer,...
02/28/2026

Floodplain management works best when it’s accurate, practical, and grounded in real-world understanding.

Liana Winsauer, P.E., brings 30 years of experience in floodplain and stormwater management and recently joined Chastain, adding decades of expertise to our team. Her focus is clear: providing accurate floodplain and hazard mapping while keeping the process collaborative — not unnecessarily bureaucratic.

Communities depend on thoughtful mapping and regulatory guidance to make informed decisions. Liana’s experience helps ensure those decisions are based on sound data and balanced judgment.

And if you’re ever swapping unique housing stories at a team meeting — Liana might win. She lives in a former funeral home.

We’re proud to have her experience and perspective at Chastain.

Address

120 W Center Court
Schaumburg, IL
60195

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 12pm

Telephone

+18334242782

Website

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