Gannett Fleming Acquires DEC, Texas-Based Water & Transportation Engineering Firm

Gannett Fleming Receives Strategic Investment from OceanSound Partners

January 9, 2023

Engineering Services

Gannett Fleming, a U.S.-based infrastructure engineering and consulting firm, received a strategic growth investment from OceanSound Partners. Management will retain a significant ownership stake and OceanSound will support investments in technology, talent, and geographic expansion to accelerate the firm’s growth across transportation, water, federal, power, and energy markets.

Gannett Fleming Merges with TranSystems; Sentinel Exits via Combination with OceanSound-backed Gannett Fleming

August 7, 2024

Infrastructure

Gannett Fleming, a portfolio company of OceanSound Partners, has completed a strategic merger with TranSystems, a Sentinel Capital Partners portfolio company, creating a national infrastructure consulting leader with roughly $1.3 billion in combined revenue and more than 5,000 employees. The deal represents Sentinel's exit of TranSystems and expands Gannett Fleming's capabilities and geographic coverage across transportation end markets including highways, bridges, mass transit, freight rail, and aviation.

Gannett Fleming TranSystems Acquires Scalar Consulting Group

March 31, 2025

Engineering Services

Gannett Fleming TranSystems has acquired Scalar Consulting Group Inc., a West Palm Beach, Florida-based transportation engineering and CE&I firm. The deal expands Gannett Fleming TranSystems' presence in Florida and broadens its transportation and construction engineering & inspection capabilities, adding Scalar's five offices and technical engineering staff.

Water Engineering (Nolan Capital) Acquires Delta Chemical Corp.

May 23, 2023

Environmental Services

Water Engineering, a portfolio company of Nolan Capital, has acquired Delta Chemical Corp., a Jefferson, Louisiana–based provider of water treatment chemicals, equipment, consultation and preventative maintenance services. Delta's owners, Ross Heidingsfelder and Lee Mauberret, will remain with the business as it joins the WEI platform to expand the platform's footprint and continue WEI's consolidation strategy in water treatment services.

Gannett Fleming Acquires DiGioia Gray

August 1, 2023

Engineering Services

Gannett Fleming has acquired DiGioia Gray, a specialist provider of transmission, substation, geosciences, geotechnical, and civil engineering solutions. The deal expands Gannett Fleming's power and utility capabilities and scales its transmission and substation engineering offering; Gannett Fleming is a portfolio company of OceanSound Partners.

Gannett Fleming TranSystems Acquires Muller & Muller Ltd.

December 3, 2024

Engineering Services

Gannett Fleming TranSystems has acquired Chicago-based architecture firm Muller & Muller Ltd. (M2), a team of about 65 professionals with offices in Chicago, Dallas, Seattle and Peoria. The deal, announced Dec. 3, 2024, adds architectural, planning and structural engineering expertise—particularly in transit and aviation—to Gannett Fleming TranSystems’ service offerings as a PE-backed platform.