Fueled by Progress—Still Growing Strong!
TWM continues to stand out, holding a spot within the top 10 largest engineering firms in the St. Louis metro area. According to THE LIST released by the St. Louis Business Journal each year, TWM ranks #10 among 118, which includes a number of large national firms. The business journal based its firm rankings on the dollar value of local engineering billings reported by offices in the greater St. Louis metropolitan region.

Over the past 24 years, TWM has steadily continued to grow and forged its way into the top 10 after first appearing on the list at No. 24 in 2001. With headquarters in Swansea, IL, TWM currently has 38 engineers specializing in diverse disciplines and 181 total employees.

Celebrating 79 years in business, TWM continues its upward momentum, seeking new opportunities for expansion while staying true to our mission of Exceptional Service. Nothing Less. Together, as one team, we remain focused on our commitment to our clients, staff, and communities – all of whom have made TWM what it is today.

About TWM, Inc.
TWM is a 100% employee-owned firm providing civil and structural engineering, land surveying, and other geospatial services. From our humble beginnings in Belleville, IL in 1946, TWM has grown to be the successful firm it is today, with corporate headquarters in Swansea, IL, and nine additional offices throughout the Midwest and Southeast. Our five primary disciplines include Survey/Geospatial Services, Transportation, Land Development, Structural, and Water Infrastructure. As a full-service engineering consultant, TWM prides itself on being able to provide a broad range of design projects and related services, while delivering on its company mission of Exceptional Service. Nothing Less.