"The region's premier civil engineering
design and land surveying firm"


A Diverse Portfolio

Our team of professionals feature a diverse skillset that when applied to a project ensures quality results. Civil Design Inc hosts a work environment that reinforces learning and professional growth of individuals through opportunities fostered by seeking challenges and collaborative problem solving. 



Jeffrey Cooley, PE

As CEO, Jeffrey Cooley oversees and manages every facet of business operations within Civil Design Inc. At the helm of project development, he performs engineering calculations, prepares plans, and writes specifications as well as conducts construction administration and tracks budgets for in-progress construction projects. Driven by the visceral need to do things right, Jeff is a creative and incisive problem solver with illustrated talent in track layout and site design. Jeff motivates, mentors, and leads a team of talented professionals by maintaining a culture of constant open communication that extends to clients alike.      


Carey Bretsch, PE

As Civil Design Inc’s co-founder and President, Carey holds a bachelor’s and master’s degree in civil engineering from South Dakota State University. He is predominantly involved in marketing for the company and mentoring the Engineers in Training. Carey’s tenacious career has established innovation and understanding in his work with successful projects in North Dakota, South Dakota, Nebraska, Iowa, Illinois, Indiana, Texas, and Minnesota. His diverse project expertise includes roads, bridges, subdivisions, sports complexes, parking lots, commercial sites, drainage, hydraulic analysis, and river stabilization. 


Andrew Kangas, PE/LS

Andrew, as Vice President, serves as a project engineer and land surveyor. After completing his bachelor’s degree in civil engineering, Andrew obtained his PE license in 2011 and LS certification in 2016, making him a versatile asset to the Civil Design team. He has a comprehensive understanding of standards for design elements and demonstrates strong project coordination abilities. In addition to overseeing all of CDI’s field data collection, drafting, construction staking, and survey crews; Andrew designs, drafts, and plans for road, railroad, drainage, utilities, and various other projects. 


Jason Petersen, PE

Jason obtained his professional engineer's experience at CDI as an engineer intern, and has a bachelor's degree in civil engineering. He performs a wide range of duties, including research, concept, and alternative development, and is licensed in SD and MN. He coordinates clients, subcontractors, agencies, and other staff. Jason provides diverse experience in the civil engineering field, including site design, streets, utilities, drainage projects, railroads, and bridge inspections.


Christopher Brozik, PE

Chris obtained his PE license in 2014 after completing his master's degree at SDSU and gaining years of experience at CDI. He has a thorough knowledge of the principles and practices of engineering and has a proven track record of successfully completed projects. He specializes in structural design and he prepares CAD drawings and correspondence, plan sheets, specifications, quantity estimates, cost estimation, and technical reports. 


John Schinkel, LSIT, CAD Technician

John joined the CDI team in 2010 after receiving his associate's degree in 2010. He assists engineering staff and surveyors with drafting, design, and plan inspection, using CDI’s state-of-the-art equipment. John processes preliminary survey data and makes necessary calculations for plan and specification preparation.


Tim Brezina, Chief Survey Technician

As part of the CDI team since 2007, Tim is an expert in the principles, practices, and instruments used in surveying and civil engineering. CDI relies on Tim for all topographic and construction staking duties. He has an associate's degree from St. Cloud Technical College in Minnesota. 


Ryan Jacobsen, Materials Testing Technician

Ryan joined the CDI team in 2015. He has considerable knowledge of the principles, practices, and instruments used in surveying and materials testing, including collection, testing, and recording of construction materials. Ryan is responsible for operating equipment to perform materials testing to meet federal and state regulations.


Brian Ruppelt, EIT

As a 2014 civil engineering graduate of South Dakota School of Mines & Technology, Brian performs duties under the direction of the professional engineering staff, including research, concept, and alternative development. He is gaining preliminary engineering experience in a wide variety of civil engineering projects.


Neil Rolf, Civil Engineering Technician

After obtaining his bachelor's degree in architecture at South Dakota State University, Neil joined the CDI team in 2016 and assists engineering staff with AutoCAD and architectural drafting. He also edits and maintains CDI's marketing and promotional materials, such as project descriptions, employee resumes, our website, and firm literature for future bid proposals.


Deanna Vaske, Office Manager

Deanna started at Civil Design Inc in 2002 and is responsible for the coordination and communication of all office operations. Deanna works with the entire CDI team and with clients under the direction of the managing partners, and also maintains general ledgers, processes payroll and benefits, and performs other clerical duties.