Della RoccaMichael Della Rocca has joined consultant McKinsey & Co. as a partner in its global infrastructure practice. Based in Philadelphia, he leads its megaprojects service line, the firm confirms to ENR.Della Rocca had been Americas CEO for AECOM and also was regional managing director in North America for U.K.-based Halcrow.Tutor Perini Corp., Sylmar, Calif., has elevated James A. "Jack" Frost to president and chief operating officer. He was executive vice president and CEO of the contractor's civil group since 2008. As president and a corporate director, Frost succeeds Robert Band, who becomes executive vice president for Perini management services.Burns

Mortenson Third generation now leads $2.5-billion family owned Minneapolis contractor David Mortenson has been elevated to chairman of M.A. Mortenson Construction Co., as part of the family-owned Minneapolis building contracting giant's planned succession. His father, M. A. “Mort” Mortenson Jr., who was in the role since 1976, now is chairman emeritus. Formerly president, David Mortenson joined the firm in 1991 and was project director of the landmark Walt Disney Concert Hall in Los Angeles. Tom Gunkel remains CEO, and former Chief Operating Officer Dan Johnson is president. Tom Wacker is elevated to COO from senior vice president. Mortenson has 3,800

Related Links: Visionary engineer invests in Northeastern again, expands leadership program National Academy of Engineering-Gordon Prize website   KalavritinosJack Kalavritinos will join the national ACE Mentor Program as CEO, as of Feb. 1. The Washington, D.C.-based group links professionals in architecture, engineering and construction with high-school students who are mentored to pursue STEM academic courses and industry careers. Kalavritinos was global government affairs director at Covidien, a health-care products firm. ACE's 67 U.S. chapters now have 2,200 mentors, who have worked with almost 8,000 students.New York City-based engineer STV has hired Jon Miller as executive vice president and head of

Related Links: Q&A with Callison CEO John Jastrem Sweetened Offer Seals ARCADIS Buy of UK Engineer Hyder for $476 Million   JastremHolland-based global engineer ARCADIS NV reached out to two executives with experience largely outside the construction industry in selecting the new chiefs of its Colorado-based North American business, announced on Jan. 15.The firm named John Jastrem and Joachim Ebert as CEO and chief operating officer, respectively, of that unit, to replace the retiring Gary Coates, who was in both roles. Since 2011, Jastrem had been chairman and CEO of Callison Architecture Holding LLC, which he assumed from a previous

ENR Larry Weyers is elevated to CEO of Manitowoc crane-making unit as equipment giant's structure may change. Related Links: Manitowoc Company should consider split Equipment manufacturer The Manitowoc Co. Inc. on Jan. 6 said it elevated Larry Weyers to president of its cranes unit. He will succeed Eric Etchart, who was in the role for eight years and becomes corporate senior vice president for business development. Weyers, who joined the Wisconsin company in 1998, was global executive vice president for Manitowoc Cranes. The corporation also makes food-service equipment. Manitowoc also elevated Josef Matosevic to senior vice president of global operational

ENR Michael Caliel, an IT sector veteran, now will lead the global drilling-water services contractor. Layne Christensen has high hopes for Michael J. Caliel, who takes over on Jan. 2 as president and CEO of the U.S.-based global water management, construction and drilling contractor, after a 2014 of tough business breaks.The former IT sector chief was tapped earlier this month to succeed board Chairman David A.B. Brown, who took those roles temporarily in June, following the sudden resignation of former CEO Rene J. Robichaud in the wake of big bottom-line issues.According to analysts, Robichaud stepped down in what Layne Christensen

Related Links: Parsons Corp. Expands Presence in Canada Transport Design Bowles is back, this time to help Kidder expand further in California Windfarms in Australia may be blown away as Prime Minister Tony Abbott lauds coal Rider Levett Bucknall, a U.K.-based cost and project management consulting firm wth more than 120 offices and 3,200 staff globally, will not replace Lance Taylor, CEO of its 400-person U.K. division in London, who left the firm in September. Instead, it will share his executive responsibility among six division board directors to promote what it calls a more “collegiate” management approach, according to British

Sean Airhart, NBBJ Digital content firm veteran also held management roles at Sotheby's. Related Links: NBBJ Website Juli Cook, a veteran executive credited with innovating business models in professional and creative services firms, has joined Seattle design firm NBBJ as chief operating officer. Previously, she was an executive vice president of Corbis Corp., a digital content licensing company founded in 1989 by Bill Gates. She most recently led diversification efforts in its unit, Corbis Images, successfully acquiring multiple new business lines. Cook also had been vice president of product management at retail bank Washington Mutual, and held management roles at

Jacobs Engineering Group Inc. said on Nov. 23 that President and CEO Craig Martin will retire from the role and the firm, effective Dec. 26, for unspecified “health reasons.”

Related Links: B&W Announces Intention to Spin-off Its Power Generation Business Babcock & Wilcox Announces Third Quarter 2014 Results The Moles website   FerlandThe Babcock & Wilcox Co., Charlotte, N.C., announced on Nov. 5 executive changes as part of its expected corporate split into two standalone companies to boost shareholder value, which will be completed next summer. Current B&W President and CEO E. James Ferland will take the same roles in one company, to be called Babcock & Wilcox, which will consist of the former firm’s power generation Bakerequipment and services business. He has been In his current role since