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Sustainable Transportation Engineering Planning & Design
Applying the Latest Technology
Transforming Today's Ideas Into Tomorrow's Reality
Many Disciplines One Team
Over 50 years of engineering excellence
Collaborate. Innovate. Create.
Empowering Precision with Authority
More Options. Fewer Surprises. Better Outcomes.
Stronger by Design.
Partners for Architecture
Shaping Our Communities Together
Helping You Turn Spaces Into Places
Value Focused. Community Minded. Quality Driven.
Experience Dedicated to Your Success
Trusted. Timeless.
Bright People. Powerful Solutions. Better Communities.
Founded in 2013 by Kevin Carpenter and Bill Marty, Carpenter Marty Transportation is a civil engineering firm specializing in roadway, bridge, traffic, planning, survey, and architecture services. Since its founding, CM has experienced significant growth while maintaining a clear focus on infrastructure design and client service. Headquartered in Columbus, Ohio, CM expanded in 2018 by opening new offices in Cincinnati, Ohio and Charleston, West Virginia. We expanded our services again in 2020 with the launch of Comma Designworks, a full-service architecture branch in Nashville, Tennessee. Infrastructure remains our core focus, supported by leadership that exemplifies our values.
A History of Engineering Success
People Centric | Client Focused | Community Minded
A tradition of innovative engineering
Elevating infrastructure, together.
Engineering the Extra Mile
Quality engineering, design, and inspection services hallmarked by creativity, sustainability, and the celebration of the communities in which we work
Engineering, Surveying, Environmental & Planning Services