Infrastructure Design Group, Inc.

Merry Christmas from Infrastructure Design Group!

We hope you have a chance to spend time with family and friends this holiday season.

Our office will be closing at noon on Christmas Eve and we will reopen Friday, December 26th at 8am.

Natalie at HDR baked a cake to celebrate the opening of Arrowhead Parkway today.

We think she captured the intersection perfectly!

Natalie has been helping out on the inspection for the structures on the project. I think we're all excited to see this intersection open back up for the winter.

Thanks Natalie!

Happy Professional Engineers Day!

Congrats to Phil on being named a Fellow with the National Society of Professional Engineers! His dedication to the profession, service to both the South Dakota Engineering Society and his time served on the National Board for NSPE, and his passion for mentoring makes him a deserving candidate for this honor.

🎉 Introducing our next Fellow of the Day: Phil Gundvaldson, P.E., F.NSPE

Phil is a dedicated NSPE and NSPE-SD leader who has served as chapter and state society president, North Central Regional Director, and a member of the NSPE House of Delegates.

As cofounder and president of Infrastructure Design Group, he’s helped grow the firm from just two employees to nearly 30 across South Dakota, while mentoring the next generation of engineers and championing the profession.

Join us in celebrating Phil and the entire 2025 class of NSPE Fellows! 👏 https://ow.ly/kagx50W5BaY