Denver, CO – May 5, 2022 – Trilon Group (Trilon), a family of infrastructure consulting businesses backed by Alpine Investors, today announced new partnerships with DRMP Inc. (DRMP) and ESI Consultants (ESI) that continue to advance Trilon towards its vision of building the next Top 20 infrastructure services firm in North America.

With the addition of DRMP and ESI, Trilon launches its National Transportation platform and expands its presence into the Southeast and Midwest regions. The Trilon family of companies also includes Waggoner Engineering, a Mississippi-based engineering services firm which joined the group in February 2022. Trilon is backed by Alpine Investors, a people-driven private equity firm committed to building enduring businesses, and pursues partnerships with like-minded engineering firms focused on delivering practical and sustainable infrastructure solution.

Founded in 1977, DRMP is a multi-discipline civil engineering and surveying firm that develops innovative design solutions for infrastructure development in the public, private and industrial sectors. DRMP employs over 500 professionals in 19 offices across the Southeast region of the U.S. with headquarters in Orlando, Florida. With its deep expertise in transportation infrastructure, planning and design services, DRMP will help lead the growth strategy for Trilon’s National Transportation platform. Larry Smith, Jr., PE will continue to lead DRMP as CEO / President.

Founded in 2003, ESI is an engineering and architectural consulting services firm that is committed to building enduring relationships with its business partners and clients by provided cost-effective and innovative solutions. ESI’s staff is committed to providing Excellence, Service, and Integrity in everything they do. The company is headquartered in Naperville, Illinois with additional offices in Charleston and Chicago, Illinois and Hammond, Indiana. ESI will continue to be led by President and Founder, Joe Chiczewski, PE.

“We are thrilled for DRMP and ESI to join Waggoner as members of the Trilon family,” said Trilon CEO Mick Renshaw. “Larry and Joe have built extraordinary companies and phenomenal leadership teams that share a passion for serving their communities, clients, and employees and that make DRMP and ESI fantastic strategic and cultural fits for Trilon. We are excited to support both companies by investing in talent, technology, and targeted M&A to help them accelerate their growth ambitions. By serving as a growth accelerator for quality firms, Trilon is able to help firms expand the services they provide to their clients and the career advancement opportunities they can offer their employees.”

“Building on Trilon’s initial partnership with Waggoner, we are excited for the platform to grow with the addition of two high-quality, deeply experienced firms that bring crucial expertise in transportation infrastructure and civil engineering. Both DRMP and ESI are exceptional companies that share Trilon’s vision for the future of infrastructure and have cultures that align closely with Alpine’s PeopleFirst philosophy,” said Alpine Partner Dan Sanner. “We are pleased to be able to support both companies in their continued growth with capital from our eighth flagship fund.”

Trilon is actively seeking partnerships with infrastructure services businesses in any of its key markets, including transportation, water, utilities, environment, and community infrastructure. Business owners interested in learning more about Trilon should contact Johnny Heller at

Terms of the private transaction were not disclosed. DRMP and ESI will continue to operate independently under their existing brands.

About Trilon Group

Trilon group was formed with a vision to build the next Top 20 infrastructure services firm in North America by bringing together some of the nation’s best infrastructure consulting firms. Key focus areas include Transportation, Water, Utilities, Environment and Community Infrastructure. Trilon currently comprises 650 staff across 34 offices in the US.  For more information, visit

About DRMP Inc.

Founded in 1977, DRMP is a multi-discipline firm helping clients design and deliver infrastructure for the community-at-large. DRMP currently employs 500 professionals in 19 office locations spread strategically across its service areas. DRMP is ranked among Engineering News-Record’s “Top 500 Design Firms” in the United States. For more information, visit

About ESI Consultants

Founded in 2003, ESI Consultants, provides a broad range of Engineering and Architectural consulting services and has built and advanced a high quality, service orientated reputation by providing professional service with a practical approach. ESI’s goal is to build enduring relationships with its business partners and clients by provided cost-effective and innovative solutions ESI’s staff is committed to providing Excellence, Service, and Integrity in everything it does. For more information, visit

About Alpine Investors

Alpine Investors is a people-driven private equity firm that is committed to building enduring companies by working with, learning from, and developing exceptional people. Alpine specializes in investments in companies in the software and services industries. Its PeopleFirst strategy includes a CEO program which allows Alpine to bring leadership to situations where additional or new management is needed post-transaction. Alpine is currently investing out of its $2.25 billion eighth fund. For more information, visit

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