TWM has been providing customized engineering services to industrial clients for over 25 years. Our expertise ranges from barge/truck/rail loadout design to tank and catwalk support structures, as well as other necessary civil and structural engineering services for various agriculture, refinery, warehouse, harbor, and other facility improvements.

At TWM, our focus is on providing you with accurate engineering designs no matter what your individualized needs might be. We have a reputation for producing easily constructible designs, which reduce the need for costly rework. TWM is the partner who can deliver results on-schedule and on-budget.

We often incorporate 3D laser scanning services during the planning phases of a project, which not only increases employee safety, but provides companies with long-term, accurate records of the facility conditions. These scans have been proven to shorten the planning phases required for each future project – giving you a jump on completing future projects in a timely manner.

Additionally, for rail-related projects, TWM’s team has the experience and connections to help expedite the permitting process. We have successfully completed multiple projects over the past 18 months requiring timelines of less than 100 days.


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Exceptional Service. Nothing Less.


TWM continues the important business of supporting our nation’s essential infrastructure in these uncertain times. We are committed to our mission of providing Exceptional Service, Nothing Less to you, our clients and partners. As a professional services firm, the health of our employee-owners and their families is paramount. We are following government directives and public health guidance, implementing work-from-home and other social distancing and hand hygiene practices. We have employed additional technological resources to support our modified operating structure, and we expect to be able to do so with minimal disruption. If you need to visit our offices in person or have trouble reaching your TWM contact, please contact us at 618.624.4488 so we can make arrangements or put you in touch with the appropriate person. Thank you for placing your trust in TWM. Wishing you safety and good health.