Terracon Celebrates 50 Years

Manchester, NH – Terracon, an employee-owned engineering consulting firm, celebrated its 50th anniversary in April.

Founded in 1965, Terracon traces its roots to a small engineering firm, Soil Testing Services of Iowa, Inc., with Gerald Olson, P.E., as founder, and has expanded into a nationwide operation with more than 150 offices and 3,400 employees.

In 1980, the company was renamed Terracon Consultants, Inc., and became 100% employee-owned.

Terracon entered the Manchester market when it merged with Jaworski Geotech, Inc. in 2007.

A number of recognizable projects include the Manchester Municipal Complex, Bow Distribution Center, Derryfield School, Manchester VA Center, Central Fire Station, Manchester City Hall, Elliot Hospital, and Manchester Transit Authority.

“This anniversary is about honoring our clients who have put their trust in us,” said David Gaboury, P.E., the current president and CEO.

“We celebrate our employees this year, who provide quality service to our clients,” said James B. Matz, Manchester office manager.

Anniversary activities will take place throughout the year. The Manchester office will host a client appreciation event, as part of the celebration, in May.


The Manchester office has grown to include 32 employees with a staff of dedicated engineers, scientists, and technicians.

Gaboury has led the company to nearly $500 million in revenues over the last 18 years. Additionally, the company has jumped nearly 30 spots in the past 10 years on Engineering News-Record’s Top 500 Design Firms ranking, rising to No. 35 in 2014.

“We are also thankful to our clients who have trusted us with their business. Together we are helping to build a vibrant Manchester and we are making a difference in our community.” said  Matz.

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