Horner & Shifrin, Inc.

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Horner & Shifrin, Inc. Celebrating 92+ Years of Excellence in Professional Services Founded in 1933 in St.

Horner & Shifrin is a multidisciplinary professional services firm with the experience and capability to serve a wide variety of clients throughout the United States. Louis, H&S has grown to offer services to meet the ever-changing needs of our clients and to keep ahead of technological developments in the field of engineering. We offer professional services in all phases of a project, from feasibility planning and development, funding application assistance, land survey and 3D scanning, and environmental planning, to engineering design and construction administration, as well as GIS mapping services. Our projects are managed in a way that allows for thorough review by senior-level staff, no matter the size of the project. H&S has demonstrated innovative design on numerous projects, receiving recognition in the form of professional awards and repeat assignments from 80% of our clients. As a 100% employee-owned firm, every staff member has a personal vested interest in completing work to the satisfaction of our clients. These reasons and more make Horner & Shifrin the Right Choice for any project.

10/16/2026

October, we celebrate both H&S Founder's Month and Employee Ownership Month. Annual Lunch is a fitting way to bring everyone together.

Our whole team gathered at our St. Louis headquarters for great food, co****le in the courtyard, and plenty of good conversation.

We're proud to be employee-owned, and days like this are a great reminder of what that means. Thanks to everyone who came out!

Our own Brad Riechmann, P.E., served as MC for an Illinois Department of Transportation Q&A at ACEC-Illinois’ Fall Confe...
10/16/2026

Our own Brad Riechmann, P.E., served as MC for an Illinois Department of Transportation Q&A at ACEC-Illinois’ Fall Conference in Naperville yesterday. As a Director on ACEC Illinois’ Board, Brad led the discussion with IDOT’s Teresa Price and Rebecca Tharp.

The conversation was especially relevant to our transportation work in Region 5. H&S led the I-255 rehabilitation in St. Clair County for IDOT’s District 8, including resurfacing 3.6 miles of interstate and rehabilitating nine bridge structures. The project earned a 2021 ACEC Illinois Engineering Excellence Honor Award.

Brad was joined by Bridgett Jacquot, Raciel Ocampo, and Mark O’Brien from our Transportation Infrastructure Engineering team, who helped capture the day.

Some of our team in the St. Louis area gathered in Urban Chestnut's Zwickel Lounge in the Grove yesterday for our Founde...
10/02/2026

Some of our team in the St. Louis area gathered in Urban Chestnut's Zwickel Lounge in the Grove yesterday for our Founder's Day celebration.

They played a little pool and shuffleboard, grabbed a few brews and big slices of pizza, and spent the time catching up. 🍻

Thanks to everyone who helped kick off Founder and Employee-Owner month!

93 years ago today, two engineers walked away from steady jobs at the City of St. Louis to start something of their own....
10/01/2026

93 years ago today, two engineers walked away from steady jobs at the City of St. Louis to start something of their own. It was 1933, the middle of the Great Depression. Their timing wasn't perfect, but they saw a vision for what they could do and ran with it.

Wesley Horner and H***n Shifrin named it Horner & Shifrin. We're still here, still in St. Louis, still doing the work.

Since 1987, we've belonged entirely to the people who work here. No outside owners, just the people delivering projects across the region, sharing in their mutual success.

Happy Founders Day to every H&S employee-owner, past and present. 🎉

Funding is often the hardest part of a water project. Our water infrastructure engineering service has a dedicated fundi...
09/28/2026

Funding is often the hardest part of a water project. Our water infrastructure engineering service has a dedicated funding practice that helps communities across Illinois, Missouri, and Arkansas identify the right programs, build competitive applications, and stay compliant after the award. See how it works: https://www.hornershifrin.com/water-infrastructure-funding-capabilities/

Jon Derner from our Structural Engineering team is presenting at the IDOT Bridge Seminar in Naperville Friday on two of ...
09/23/2026

Jon Derner from our Structural Engineering team is presenting at the IDOT Bridge Seminar in Naperville Friday on two of the most complex topics in bridge engineering. Proud to have our people at the table where Illinois infrastructure decisions are made.

ACEC-Illinois Illinois Department of Transportation

Xavier Diggs came to Horner & Shifrin as a GIS analyst — and grew into a Project Environmental Scientist with two certif...
09/15/2026

Xavier Diggs came to Horner & Shifrin as a GIS analyst — and grew into a Project Environmental Scientist with two certifications, a promotion, and a firmwide Rising Star Award.

That kind of growth doesn't happen by accident. Xavier earned his CPESC and PWS certifications because he saw where the industry was headed, and it's opened H&S to clients who need a credentialed wetland scientist on their project.

His mentor, Bridgett Jacquot, says it best: "He can always be counted on with a positive attitude and a clear focus on achieving results. He is an invaluable team member and a trusted colleague."

Read Xavier's full story: https://www.hornershifrin.com/xavier-diggs-environmental-scientist/

Jon Derner from our Structural Engineering team is presenting at the IDOT Bridge Seminar in Springfield tomorrow on two ...
09/14/2026

Jon Derner from our Structural Engineering team is presenting at the IDOT Bridge Seminar in Springfield tomorrow on two of the most complex topics in bridge engineering. Proud to have our people at the table where Illinois infrastructure decisions get made.

ACEC-Illinois Illinois Department of Transportation

Carrie O'Neill and her team at O'Neill & Company are now part of Horner & Shifrin — with Carrie leading our Salt Lake Ci...
09/14/2026

Carrie O'Neill and her team at O'Neill & Company are now part of Horner & Shifrin — with Carrie leading our Salt Lake City office as Vice President, Regional Manager.

She's personally designed more than 500 traffic signals across Utah. Her clients know her by another name.

Meet the Signal Gal: https://www.hornershifrin.com/carrie-oneill-utah-traffic-signal-design/

Celebrating the employee-owners whose work helps move communities forward. Horner & Shifrin is 100% employee-owned — the...
09/07/2026

Celebrating the employee-owners whose work helps move communities forward.

Horner & Shifrin is 100% employee-owned — the people building your infrastructure have a stake in how it turns out.

Happy Labor Day from H&S.

Address

401 S 18th Street , Ste. 400
St. Louis, MO
63103

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

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