When designing highways, there are several keys to success. Our experienced team begins by analyzing the environment and considering the site’s constraints. We look at the existing buildings, drainage, and planned development, partnering closely with cities and Departments of Transportation to reach their goals.

With those factors in mind, we create solutions that increase safety and efficiency for the surrounding area. We have helped move communities forward by designing:

  • Interchanges.
  • Divided highways.
  • Widening highways.
  • Signal projects.
  • ITS, including ramp metering, highway lighting, and Digital Messaging System boards.

Affinis listened to the issues, from both MoDOT and the City of Grain Valley and then designed a successful project. They worked diligently to provide solutions to the project’s complex issues. Whenever we had an issue, whether it was in the design phase or post letting, they were always there to help make the project succeed.

Craig Holdeman
Transportation Project Designer, Missouri Department of Transportation

Affinis delivered a plan that works not only for us, but also the City of Parsons. One measure of its success is the city has already begun moving forward with projects outlined in the US-59 Access Management Plan.

Wayne Gudmonson, District IV Engineer
Kansas Department of Transportation

Public Engagement Strategies for Complex Projects

k-68 public engagement complex projects

For our public engagement series, we interviewed Affinis co-workers on strategies, best practices, and lessons learned. In the first installment, we’re sharing thoughts from Linda Rottinghaus, PE, ENV SP on complex projects. This post covers her recent work on K-68.


High Mast Lighting with KDOT

We’re partnered with the Kansas Department of Transportation (KDOT) on several highway lighting projects. Together, we replaced existing, weathering steel poles before they became a hazard to the public. These high mast poles are placed strategically to light interchanges and surrounding intersections. This is done to improve visibility and ultimately safety.



Our structural engineering group is invested in protecting communities with reliable infrastructure. With each project, we work to reduce risk and create a resilient structure, protecting our clients’ investments and the surrounding area.


Developing concepts and analyzing alternatives is something we do well. Our traffic engineers are skilled at collecting data and then, using that information to improve capacity and increase safety on our roadways.

Roadway Engineering

Our roadway engineering group moves communities forward. Whether designing residential streets, thoroughfares, or highways, we are focused on improving quality of life, supporting economic development, and increasing safety.


When designing stormwater solutions, we look at the entire site. Our comprehensive approach maximizes budgets and minimizes disruptions to residents, streamlining future improvements.


Our experienced railroad engineering team attends trainings and obtains certifications to increase safety on site. We use this continuous education and our past experiences to complete projects quickly and efficiently.

Construction Engineering

Communication, collaboration, and transparency are the keys to our construction engineering approach. By focusing on forming long-lasting relationships, we are able to anticipate obstacles and find effective solutions for our clients and partners.


Our forward-thinking survey team uses a combination of new technology and proven methods to deliver accurate data to our clients. This allows them to fully capture the existing conditions of a project site and understand which elements should be included in every survey.

How can we make your life easier?
Send us a note or call us today to learn how we can help you.

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