John Darrohn

Founder + Principal



B.S. Civil Engineering, Christian Brothers University, 1991


  • South Carolina
  • Georgia
  • North Carolina
  • Florida


  • American Society of Civil Engineers
  • US Green Building Council
  • North Main Community Assoc.
  • Greenville Spinners
  • Assoc. of Pedestrian & Bicycle Professionals Urban Land Institute
  • Green Ribbon Advisory Committee (Mobility), Greenville, SC
  • Green Ribbon Advisory Committee (Mobility), Greenville, SC
  • Palmetto Cycling Coalition, Past Director
  • Big Brothers Big Sisters of the Upstate, Past Director

Since graduating from Christian Brothers College in Memphis, TN with a Bachelors Degree in Civil Engineering in 1991 John has served his profession and community in many ways. John has special interest in sustainable storm water design and bicycle trail and greenway projects and supports bicycle advocacy through direct participation and continued dialogue with local planners, stakeholders, and citizens. He supports responsible development and believes that both preservation of environmental resources and economic benefit are possible through common-sense design and construction.

John Darrohn has significant experience working on diverse projects throughout a career lasting more than 30 years. John has participated in a multitude of different projects within many business sectors and in various capacities as a sole designer, multi-disciplinary team charrette member, project manager, and certifying Engineer of Record during construction. Clients benefit from this significant professional experience.

Since establishing Darrohn Engineering, LLC in 2009 John has leveraged long-term relationships within the municipal and recreation community to the forefront allowing a specialized focus within these business sectors. The firm is successful in continuing to grow it’s portfolio of projects for regional private and public sector clients.

John has expertise with conventional site design and permitting of storm water and erosion and sediment control management systems, water and sewer utilities, and other infrastructure for various development scenarios. Projects include residential subdivisions, commercial, campus, health care, industrial, manufacturing, transportation, aviation, and marine work. John also maintains proficiency with trail, greenways, and bicycle facility design. A background including LEED accreditation, USGBC project certification experience, ecological, and sustainable design and construction experience allows implementation of green building practices when desired.

In his spare time John enjoys listening to live music, collecting and playing vinyl records, and riding his mountain bike. John and his wife Sarah also enjoy spending time with their two young children, Emma and Ian.

What People Are Saying

Always appreciate your thoughtful approach to tough design issues - keep it coming for many years to come!

Suzanne Childs

Childs Architecture

Thanks for all that you are doing for us.

Bill Barringer


We appreciate your persistence in helping us through this one and look forward to opportunities to work with you in the future.

Scott Wilbanks

You’ve been such a great asset... and I really appreciate your expertise and insight.

Maxim Williams

I for one, appreciate the hard work you did for the club on our bike lane projects and I’m proud that they are expanding and growing all the time.  I think you were one of the early pioneers on bike lanes in the community with some others. I appreciate your behind-the-scenes efforts. Thanks.

Steve Baker

Public Relations Director - Greenville Spinners

I would recommend John for any project large or small, his breath of experience shows as he has helped guide me through this process.

Loren Duwel

What's Your Challenge?

Looking for a civil engineer? We're up for a challenge! Let us know how we can help with your specific project or site concern. Darrohn Engineering is headquartered in beautiful downtown Greenville, South Carolina. Fill out the form below and we'll be in touch.

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