ANNOUNCEMENT: AP Engineering Rebranding to E91

AP Engineering has rebranded our company name to E91 effective Monday April 18, 2022.

For many years, AP Engineering (St. Paul, Minnesota) has partnered with our E91 sister divisions (in Dubuque and Davenport, Iowa) to jointly provide a broad range of engineering services to our nationwide client base. While our flexible engineering resource pool has been based in different geographic regions and serves clients under two other company names, we truly function as a single team to provide a broad range of engineering services to our customers.

Therefore, we have elected to consolidate our services under a single company name, E91, to help our current and future customers identify with a single unified brand in the marketplace.

We assure you that this rebranding will not affect our current client relationships. We will provide the same great service we have been providing for over 30 years, just a different name. Thank you to our loyal customers and business partners for your trust and friendship in business.

Go to for an overview of E91 engineering and recruiting services