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

TWM, Inc.

TWM is a 100% employee-owned firm providing civil/structural engineering, land surveying, & other geospatial services.

For 80 years, we have served the public & private sector throughout IL, MO, TN, & across the US.

08/28/2026

At The Muny in St. Louis, even the build had to be perfectly choreographed. Behind the scenes of this historic outdoor theatre, TWM helped bring a 120’ wide stage renovation to life—laying out everything from curved shell walls to complex steel set at opposing angles. Using LiDAR and precise control, our team turned a challenging 3D puzzle into a buildable reality and helped keep the project on schedule.

Learn how this performance space was reimagined in this project snapshot: https://www.twm-inc.com/the-muny-in-st-louis/

08/26/2026

👏🏆 Our St. Louis Area Young Professionals brought the energy to our Swansea, IL office this past week! The group gathered for an engaging transportation session led by Jeff Reis, our Director of Transportation Engineering—but with a fun twist! The session was presented Jeopardy-style, turning learning into a little friendly competition filled with plenty of fun and laughs. 🏆👏

There’s nothing better than stepping away from the workday, connecting with coworkers, and getting to know each other beyond the office!

08/24/2026

The Rock Island Line once connected communities by rail. Today, it connects them by trail. TWM helped transform and preserve century-old railroad bridges into a modern, multi-use trail, giving Missouri's railroad legacy a new chapter while connecting communities across the state.

Read how engineering, innovation, and historic preservation came together to help bring the Rock Island Trail corridor to life in this project snapshot: https://www.twm-inc.com/rock-island-trail-bridges/

08/19/2026

A great community starts long before the first building goes up. From homes, schools, and senior living to roadways and utilities, TWM helped design the foundation for this mixed-use development where families, seniors, students, and local businesses all connect in one place.

See how it all came together in this project snapshot: https://www.twm-inc.com/the-villages-at-wingate/

08/14/2026

Clean water projects don’t always make headlines, but they make a real difference in people’s everyday lives. When Belleville needed to reduce Combined Sewer Overflows and meet EPA regulations, the obvious answer would have been costly new infrastructure. Instead, TWM helped the City turn existing sludge lagoons into high-performing CSO management basins—saving money while significantly improving water quality.

Learn how challenges were solved in this ACEC award-winning in this project snapshot: https://conta.cc/4wrDodQ

08/12/2026

We recently gathered for our annual ESOP Celebration to recognize another year of success and progress at TWM. Our new stock share price was revealed, giving employee-owners a firsthand look at how our collective efforts are contributing to their financial futures. We were also grateful to hear from spouses about what employee ownership means to their families and the impact it has on their loved ones’ futures.

Every employee-owner at TWM plays a role in our success, and together, we’re building something we can all be proud of. Here’s to another year of shared success and continued momentum!

08/10/2026

From the early days of TWM to today, a lot has changed: the trucks, the technology, and the communities we serve.

What hasn't changed is our commitment to building lasting relationships and delivering quality work. As we celebrate 80 years and reflect on our journey to employee ownership, we're grateful for the people who have shaped TWM's story every step of the way.

Read more about our history here: https://www.twm-inc.com/early-days-to-employee-ownership-the-twm-origin-story/

08/07/2026

📣 Caught Ya’ Thinking Like an Owner! Join us in congratulating Serena Page, our July Employee-Owner of the Month! Serena is the Director of Water Infrastructure Services at TWM. She was selected as Employee-Owner of the Month for her exceptional leadership, unwavering dedication, and commitment to both her team and the firm. While balancing significant responsibilities across multiple office locations, she goes above and beyond to support key initiatives, mentor employees, and ensure the success of those around her. Her strong work ethic, positive attitude, and willingness to lead by example embody the values of employee ownership.

When asked what employee ownership means to her, Serena shared, "Being an employee-owner changes the way you think and work. It changes your outlook. The good times and the challenging times for our company mean so much more to me personally because I have ownership in its success."

Having worked for another ESOP company prior to joining TWM, she added, "What sets TWM apart is the level of commitment our leadership invests in our ESOP and, more importantly, the genuine care they show for each and every employee. That difference is what makes TWM's ESOP so special."

Thank you for your dedication and contributions, Serena! They are truly appreciated.

08/05/2026

TWM is proud to congratulate Ann Hammer on her retirement after an incredible 42 years of service!

Throughout her career in the Accounting Department, Ann witnessed remarkable growth and change within TWM and the accounting profession. Through it all, her expertise, integrity, and steady leadership helped shape TWM and supported generations of employee-owners.

Thank you, Ann, for your unwavering commitment and the legacy you've built over the past 42 years. We wish you all the best in this exciting new chapter!

08/03/2026

Most communities rebuild after a disaster. But after the Great Flood of 1993, Valmeyer made a bold decision to relocate entirely, moving approximately one mile upstream to higher ground. TWM helped bring that vision to life, designing a new community from the ground up—complete with streets, utilities, and infrastructure built for long-term resilience.

Take a closer look at the full story in this project snapshot:
https://www.twm-inc.com/the-new-village-of-valmeyer/

Address

4940 Old Collinsville Road (HQ)
Swansea, IL

Opening Hours

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

Website

http://www.twm-inc.com/

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