Proven.
50 years of professional excellence
Alt & Witzig delivers Geotechnical Engineering, Environmental Services, and Construction Testing solutions that keep your projects safe, compliant, and moving forward.
What we do
One Firm. Every Stage of the Project.
From initial due diligence to final inspection, Alt & Witzig engineers are involved at every critical phase — so your project never has to manage multiple testing partners.
Geotechnical Engineering
Subsurface investigation, foundation design recommendations, and reports grounded in 50 years of Midwest soils knowledge. We don't guess at what's underground — we verify it.
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Environmental Services
Phase I & Phase II Environmental Site Assessments, wetlands delineation, and due diligence for developers, lenders, and project teams who need clear answers before they commit.
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Construction Testing & Special Inspections
On-site materials testing, concrete and soils inspection, structural steel, post-tensioned concrete, firestop, and IBC Chapter 17 special inspections by certified technicians.
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Since 1975
Proven. It's not a slogan — it's how we work.
For five decades, Alt & Witzig has combined the capability of a national firm with the responsiveness only a regional partner can provide. Most of our clients come back — that's not a marketing claim, it's what happens when a licensed engineer picks up the phone, knows your site, and gives you a straight answer.
Featured projects
Verified in the field.
A snapshot of the work our teams deliver across Ohio, Indiana, and Kentucky — every site closed, every result verified.
✓ VERIFIED
Environmental
Wetland & Stream Determination
Middletown, Ohio · 296 Acres
✓ VERIFIED
Construction Testing
Structural Steel Inspection
Cincinnati, Ohio · IBC Ch. 17
✓ VERIFIED
Construction Testing
Structural Steel Inspection
Cincinnati, Ohio · IBC Ch. 17
By the numbers
Proof, measured.
Years in business
Offices
+
Professionals
+
Projects Completed
States served
Why project teams choose us
Field tested professionals.
We Know This Ground
Local knowledge isn't in a database — it's in engineers who've worked these regions for decades.
The Engineer Who Signs
The licensed PE you talk to in the proposal is the one whose name goes on the report.
Responsive When It Matters
Same-day break results, deadline-tied Phase I work — we treat your timeline as our deadline.
Stable When Others Aren't
Same name, same engineering leadership for over 50 years. When you call, you reach someone who knows you.
Client stories
Straight answers, on the record.
They didn't guess at what was underground — they verified it. Foundation recommendations were clear, on time, and exactly what our structural team needed.
Regional Developer
Industrial Build-Out, Indiana
A Phase I deadline was tied to our closing. Alt & Witzig treated our timeline as their deadline and delivered. That responsiveness is why we keep coming back.
City of Middletown
Wetland & Stream Determination, Ohio
The engineer who picked up the phone is the one whose name went on the report. No handoffs, no surprises — just accountability you can build on.
General Contractor
Special Inspections, Cincinnati
Where we work
Serving Ohio, Indiana & Kentucky
Ten offices across three states deliver local expertise and rapid mobilization — from single-family developments to data centers and high-rise construction.
Ohio
Cincinnati
Columbus
West Chester
Indiana
Indianapolis (HQ)
Lafayette
Fort Wayne
Evansville
Merrillville
Kentucky
Hebron
Louisville
Need answers you can build on?
Talk to a licensed engineer who already knows your ground.
