
From concept through construction, we are with you every step of the way.
Across the region, public and private partners rely on our Professional Engineers, Professional Surveyors, and Construction Managers to deliver projects that last.
We Are Proud of Our Reputation
As one of the most skillful engineering consulting firms in Ohio and with a rich legacy spanning 100 years, we have consistently delivered engineering excellence to public and private clients alike, including developers, architects, contractors, and owners. Specializing in many facets of the civil and structural engineering industry, we are focused on providing superior services in the following niches:
-
Transportation - Roadway
-
Transportation - Bridge
-
Traffic & Safety
-
Civil - Site/Structural
-
Survey
-
Construction Management
Legacy, Pride, and 100 Years of History!
In 1926, the firm of Forster and Wernert was formed to provide engineering services to a variety of private and public sector clients. In subsequent years the firm grew, adding surveying and architecture to complement the engineering disciplines the firm had become known for. As new partners joined and retiring partners divested, the firm’s name changed many times over the years. While known as Sanzenbacher, Miller and Brigham in the 1950s, DGL’s expertise in highway and bridge design led to a number of major projects with the Ohio Department of Transportation (then known as the Ohio Department of Highways), the Ohio Turnpike and Infrastructure Commission, and the Michigan Department of Transportation (Michigan State Highway Department). Our firm diversified in the years to come, expanding into traffic/safety engineering, port and rail facility design, and site development. The architectural practice was eventually discontinued to focus efforts on core services. In 1977, the firm became known as Dansard Grohnke Long, Ltd., under which it operated for nearly three decades. In 2006, we memorialized those names of our mentors and the company became DGL Consulting Engineers, LLC.
We continue to grow in quantifiable benchmarks including total staff, services provided, office locations, and service territory. As we expand, we build on the foundation established by the many talented professionals who came before us, while continuing to honor the core values, integrity, and attention to detail that define our profession.

