Brian Osborn has been appointed environmental practice leader at engineering and design firm Olsson, based in Lincoln, Neb. In his new role, Osborn is charged with supporting the firm’s growth strategy by expanding opportunities and developing technical expertise and project management capabilities within Olsson’s environmental discipline.

Appleton, Wis.-based The Boldt Co. has announced several executive-level promotions nationwide. David Thomack, a 30-year veteran of the construction industry, has been promoted to chief operating officer. Thomack joined the company in 2005 and most recently was president of Western and construction operations. Jeff Shipley has been named president of the Southern and Western operations. He has been with Boldt for more than 15 years and had led the Southern operations group. Steve Lind has been promoted to vice president and general manager of Western operations. Lind has been employed with Boldt for more than 15 years and has held various positions within the company including project financial manager, controller and area manager.

Alberici Constructors Inc. of St. Louis has promoted Phillip Lee to vice president of operations and Doug Engle to general manager of Midwest Foundation, the company’s marine division. Lee has been with Alberici for 19 years, most recently as project director. In his new role, he will oversee construction projects for the building and health care markets. Engle has been with Alberici for 10 years and most recently served as corporate counsel and commercial manager. In his new post, he will oversee marine projects including lock and dam construction, maintenance, ports, terminals, bridge and dock construction and maintenance, pile foundation, dredging, and rip-rap armor.

Fecon has hired Brandon Flexsenhar as chief operating officer, a new position within the company. Based in Lebanon, Ohio, Fecon manufactures forestry mulchers, tracked carriers and tractors as well as a range of attachments and other equipment for vegetation management. Flexsenhar has served in a variety of production and operations positions with companies such as Caterpillar, LB Steel, Fairbanks Morse Engine, Putzmeister and most recently as vice president of operations for KION.

Veena Reddy has been hired as a project manager/associate in the Louisville office of Schmidt Associates, a regional architecture, engineering and interior design firm headquartered in Indianapolis. Reddy has 20 years of experience in the fields of architecture and sustainability.

Tarlton Corp., a St. Louis-based general contracting and construction management firm, has announced that Rosyln Croft, the firm’s inclusion and diversity manager, was named a Hero in Diversity by St. Louis Small Business Monthly. Croft provides resources and access to opportunities to boost minority, women, apprentice and St. Louis resident participation in the company’s construction projects.