50 Years Strong! Join Interstate Engineering in Celebrating Our Anniversary. Watch the Video Here.
Watch Now

Empowered by Culture. Inspired by Leadership.

Thriving In a Culture of Support, Accountability, and Pride.

A man smiling at the camera giving two thumbs up

We believe great work begins with great people—and great people thrive in a culture that supports them. At Interstate Engineering, we lead with integrity, curiosity, and care. From brainstorming big ideas to celebrating everyday wins, we show up for one another and grow together. Every team member helps shape who we are, building a culture rooted in purpose, collaboration, and pride in the work we do.

Mission

Interstate Engineering is committed to improving the quality of life throughout the region by providing engineering, surveying, and planning solutions that are founded on trust, efficiency, and professionalism. Guided by individuals who care about the well-being of others, Interstate Engineering strives to leave an impression of integrity, quality, and loyalty on the communities it serves.

Vision

To be the trusted, professional team people think of for versatility, innovation, and strong community.

Values

Strong Work Ethic

Helping Others

Loyalty

Integrity

Group of employees wearing ESOP shirts and smiling at the camera
Group of employees wearing ESOP shirts and smiling at the camera
Three employees standing by the company logo
Group of employees wearing ESOP shirts and smiling at the camera
Two people wearing ESOP shirts and smiling at the camera
Group of employees outside with a dog in front wearing ESOP shirts and smiling at the camera
Group of employees wearing ESOP shirts and smiling at the camera
Group of employees wearing ESOP shirts and smiling at the camera
Group of employees wearing ESOP shirts and smiling at the camera
Group of employees wearing ESOP shirts and smiling at the camera
Group of employees wearing ESOP shirts and smiling at the camera
Group of employees outside wearing ESOP shirts and smiling at the camera
Group of employees wearing ESOP shirts and smiling at the camera

We Are Employee Owned.

We’re Proud To Be Employee Owned. Through Our Employee Stock Ownership Plan, Eligible Team Members Share In the Growth They Help Create.

Community At Heart

The heart of our commitment goes beyond just taking on a project, but it extends to the involvement of truly being invested in the places we work and call home. With offices in nearly every community we serve, we are neighbors first, working and living alongside the people we support.

Four people in hard hats and safety vests at the bowling alley, one holding a bowling ball over his head
Several employees in green shirts standing in front of a Habitat for Humanity trailer
Two employees in red aprons standing by a Salvation Army bell ringing station
Group of people holding a banner standing in front of a pickup with two dogs in front
Two people standing in front of a collection of paper bags filled with goods
Pickup covered in lights in the dark
People standing behind a table full of food
Five people holding holiday gifts
A lighted parade float pictured in the dark being pulled by a pickup
T shirt with text on it

What Does It Mean To Be INTERactive

By encouraging employee participation in organized group activities, charitable initiatives, fundraisers, and volunteer opportunities, employees can show their “INTERactive” Interstate Engineering spirit which reflects our commitment to service and community partnership.

Guided by the passions of our employees, we volunteer with purpose—supporting those in need, strengthening local organizations, and giving back to the communities that shape us. Through these efforts, we foster meaningful connections and inspire our team to actively support and uplift the organizations that make our communities thrive.

Compassion for serving others through community outreach.
  • Habitat for Humanity
  • Salvation Army Bell
  • Ringing
  • Food Pantry Volunteering
  • Toys for Tots
Five people holding holiday gifts
Collaboration to support and encourage careers in STEM/STEAM.
  • Math Counts
  • Robotics Competitions
Connection for our teams to create stronger bonds to impact culture.
  • Bowling Fundraiser
  • Community Parades
  • Christmas Parade of Lights
  • Serving at Community Picnics
People standing behind a table full of food

Effort Rewarded, Excellence Remembered.

We’re honored to be recognized by industry and regional organizations for our work and leadership. While awards aren’t what drive us, they remind us of the trust our clients place in us — and the responsibility we have to keep earning it.

Prairie Business, 2026

Top 25 Women in Business
Rachel Laqua, AICP

Prairie Business, 2025

40 Under 40
Zach Hattig

Bismarck-Mandan Chamber EDC, 2025

Top 3 Finalist for Small Business of the Year

Bismarck-Mandan Chamber EDC, 2025

20 Under 40
Gordon Lemmel

ND American Society of Landscape Architects, 2025

Award of Merit for Williston Parks & Recreation District Parks & Open Space Plan Planning & Analysis

Friend of Rural Water Award, 2025

Darrell Hournbuckle

Sidney Chamber of Commerce, 2024

20 Under 40
Jordan Mayer

Prairie Business, 2024

40 Under 40
Ashley Weightman