Dilip Choudhuri will become Walter P Moore's fourth president and CEO, effective Jan. 1. Choudhuri joined the firm in 2001, most recently serving as executive director of diagnostics since 2009. Ray Messer, the firm's outgoing CEO, will take on a new role at Walter P Moore. He will help to implement the company's strategic growth plan for the future.

Russel W. Lenz has joined Raba Kistner Inc. as chief operating officer and vice president of Raba Kistner Infrastructure Inc. Lenz has served in executive level leadership positions within the Texas Dept. of Transportation. His most recent position was director of the heavy, municipal and utilities divisions for the Associated General Contractors of Texas.

Robert L. Wilson has stepped down from the COO role at Raba Kistner Infrastructure. Wilson will remain an employee of RKI, assisting with project pursuits, project development and management.

Austin Bridge and Road has named Ben Hewett as president of the Dallas-based road and bridge building company. Hewett replaces David B. Walls, president and CEO of Austin Industries, the parent company of Austin Bridge and Road, who had been serving as president.

The company also announced that Shankar Narayanan has been promoted to senior vice president of alternative delivery. He joined the firm in 2008 and has been leading Austin Bridge and Road's alternative delivery and design-build work.

In addition, John Shine has been promoted to senior vice president of operations. He joined the company in 1983. Mike Landen has been promoted to vice president of estimating. He was hired in 2004.

Meanwhile, Austin Commercial announced that David Graham has been promoted to vice president of operations. Steve Penson has been promoted to vice president, overseeing Austin Commercial's advanced technology and biomedical research projects and pursuits. He will also work with the aviation group on major pursuits and projects.

SpawGlass announced two promotions: Eric Kennedy has been promoted to president, South Texas region, while Joey George has been promoted to operations manager of the Austin, Texas, region.

John Schmidt has been promoted to vice president, health, safety and environmental, at Cadence McShane. He previously served as the firm's director of safety and environmental compliance.

Peyton Boddie has been promoted to vice president of Hill & Wilkinson's commercial division. Boddie was previously group manager of special projects for the firm.

Robert "Bob" Postma has rejoined Manhattan Construction Co. as vice president to lead its Houston office. He was most recently at Skanska as an executive of the firm's national aviation group.

Sterling Construction announced that Greg McVey has joined its Texas Sterling Construction subsidiary as vice president of the South Texas division. In addition, Mark Buchanan has joined Texas Sterling as vice president, North Texas division.

Dave Welber, construction executive in Turner Construction Co.'s Dallas office, was promoted to vice president. Welber joined the firm's Boston office in 1981 and served as purchasing manager and operations manager of the company's special projects division. Welber moved to Texas in 1996, where he served as senior project manager, project executive and operations manager before his most recent role.

Ed Cordes has been promoted to practice chair for the science and technology market at Perkins+Will. He was previously regional science and technology leader and project principal for the North Central and Southwest regions of Perkins+Will.

Rhonda Robinson recently joined MOCA as vice president and member of the senior management team.

Norma De La Garza-Navarro has joined HDR as the firm's Central Texas transit lead. Before joining HDR, she was with Dallas Area Rapid Transit for 24 years, most recently as vice president of commuter rail and railroad management and director of the Trinity Railway Express.

F. Eduardo Villalobos has joined Parsons Brinckerhoff's Houston office as a supervising engineer. Before joining Parsons, Villalobos was an associate senior engineer at an international engineering company.

In addition, Matthew G. Verhoff has joined Parsons' Austin, Texas, office as a principal technical specialist for rail operations and planning. Verhoff was previously director of rail operations for Capital Metro in Austin.