Infrastructure Design Group, Inc.

01/01/2026

Happy New Year from Infrastructure Design Group!

12/24/2025

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.

11/21/2025

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!

11/11/2025

Thank you, Veterans, for your service and sacrifice for this country and it's people!

10/31/2025

Happy Halloween from InfrastructureDG!

10/09/2025

Get ready Harrisburg/Sioux Falls! It has been a pleasure working with Kyle and his team on this exciting project. Every great development starts with a vision. Now, it’s time to turn that vision into reality!!!!

The first residents soon will have a chance to purchase lots in a master-planned community coming to northwest Harrisburg. https://siouxfalls.business/new-housing-development-in-northwest-harrisburg-to-begin-selling-first-lots/

09/01/2025

Today, we celebrate the hard work, dedication, and contributions of all the incredible workers who keep our communities thriving. From all of us at Infrastructure Design Group Inc., thank you for your tireless efforts. Enjoy your well-deserved day of rest!

08/06/2025

Happy Professional Engineers Day!

07/10/2025

WE'RE HIRING! Infrastructure Design Group, Inc. is looking for a part-time Office Administrator to join our Sioux Falls office. InfrastructureDG is a full service engineering and land surveying firm with offices located in Sioux Falls, Watertown and Mitchell, SD. To learn more and submit your resume click here https://infrastructuredg.hireclick.com/jb/part-time-office-administrator/view/189328

07/09/2025

Congratulations to Seth McKinley who just passed the Professional Engineering Exam!

Seth just celebrated his one year anniversary at InfrastructureDG and we're excited to see him take the next step in his career with us.

06/13/2025

We are proud to sponsor a Build Dakota Scholarship at Southeast Technical College.

Last week we attended the STC Build Dakota Signing Day to support Jack Krull.

Jack is from George, IA and will be pursuing a Land Surveying Science Technology degree starting in Fall 2025.

Welcome to the future InfrastructureDG team Jack!

06/10/2025

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