WM. Winkler CO. Building Excellence Since 1919

Innovative construction solutions with a commitment to durability, community, and quality.

Service disabled

veteran

owned small business
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SERVICES OVERVIEW

Construction Services for Every Need

From concrete solutions to full-scale civil projects, we deliver unmatched expertise for federal, commercial and public sectors.

Excavator

CIVIL

Our advanced survey & construction equipment ensure accuracy while cutting down design and production time.

View of Hawkstone housing development taken from an elevated location.

SITE CONCRETE

Our concrete projects are fundamental to various construction undertakings, encompassing airport taxiways, tilt-up buildings, wind farms, super flat floors, and other significant development

Trucking Oversized Load

TRANSPORTATION

Our transportation department offers equipment, transport, and material hauling services with a fleet of over 25 trucks and trailers.

Flatwork Finishing Highway Overpass

FLATWORK

Our team can provide a high f-number and other performance slabs and flatwork for both random and designated traffic slabs.

Structural Tilt-Up

STRUCTURAL

Our comprehensive structural design experience includes bridges, parking garages, insulated sandwich panels, containment facilities, foundations, footings, and all aspects of cast-in-place concrete construction.

Custom Colored Patio

CUSTOM PROJECTS

With our considerable architectural knowledge and experience, we are equipped to handle custom projects of any scale and fulfill all design and construction requirements.

OUR LEGACY

Over a Century
of Excellence in Construction

Discover the milestones that shaped WM. Winkler CO. into the leader in the industry.
106

Years of Expertise

27K

Yards of Concrete Poured in 2024

265K

Man Hours Worked in 2024

14

Consecutive Years of AGC Zero-Incident Safety Awards

Legasy-imahe
2025 Seal bigger
our Associations

Industry Recognition & Certifications

SDVOSB Logo Color

SDVOSB

AGC Logo Color

AGC

VOB Logo Color

VOB

NUCA_logo

NUCA

OIP (1)

ACI

OIP

WACA

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benefits we provide

Why WM. Winkler CO. is the Preferred Construction Partner

Quality, expertise, and customer satisfaction are at the core of everything we do.

Our dedication to craftsmanship and time-tested systems, built on a foundation of quality, guarantee excellence across a diverse range of projects.

With over 100 years of expertise, our company features a team of elite construction professionals ready to conquer any project.

Customer satisfaction is our top priority, reflected in the lasting relationships we’ve built over decades of business.

Our commitment goes beyond building exceptional projects. We ensure clear communication, leverage advanced technology for efficiency, and uphold the highest standards through self-performed work. Our trusted reputation is built on proven results, while our dedication to the local community strengthens the places we call home. With strong leadership, we drive every project with expertise, vision, and integrity—ensuring success from start to finish.

Our portfolio

Showcasing Our Successful Projects

Explore our portfolio of diverse projects, from large-scale infrastructure to specialized commercial builds.

Career opportunites

Build Your Future with WM. Winkler CO.

Join a team where growth, safety, and excellence are at the forefront.
Finishing Curb and Gutter

For the past 25 years, he has tirelessly devoted himself to helping veterans, their families, and his community… Mr. Winkler is a selfless individual who represents everything that is good in the United States of America.

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Mrs. Cathy Rodgers
United States Congress, Washington 5th District

Your demolition crew was amazing!  It was like a well-performed surgery… Everyone arrived early and immediately set to work… The reason I am writing this to you, is that I feel that I am relatively minor client. A small “fill-in” job in your busy summer schedule. Over the years, I have learned to expect less competent and less cooperative workers for such a small home remodeling job. I was not expecting the “A” team.

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Michael and Nancy Kraemer

I’d like to take this opportunity to express my heartfelt thanks for the extraordinary job you and your company did completing the drag strip improvements at Spokane County Raceway. With your “YES WE CAN” attitude and the skill and expertise to back it up… No matter how many changes and revisions were thrown at you and your crews, you always met the demands without sacrificing the quality of the project.

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Tom Clark
T.W. Clark Construction

The workmanship is superb. The consideration during the construction of the sidewalk was beyond expectation… The crew was always professional and polite.

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Sally Gibson