AECOM announced that it has appointed Mark Southwell as chief executive of its Transportation global business line.
In this role, Southwell leads AECOM’s global Transportation design business.
Mark Southwell will serve as chief executive of AECOM's Transportation global business line

A civil engineer with over 35 years of experience, Mark Southwell joined AECOM in 2019 as the managing director of Transportation for AECOM’s Europe region and later served as the Transportation Business Line Leader for the Europe and India region.
Photo: AECOM
AECOM announced that it has appointed Mark Southwell as chief executive of its Transportation global business line.
In this role, Southwell leads AECOM’s global Transportation design business.
“At this critical moment with unprecedented global investment in transportation infrastructure, I am excited to confirm Mark’s appointment as chief executive of our Transportation global business line,” said Troy Rudd, CEO of AECOM. “Leveraging our top-ranked position in this market, we are poised under Mark’s leadership to continue attracting the industry’s best technical experts to AECOM and capitalize on tremendous long-term growth opportunities.”
A civil engineer with over 35 years of experience, Southwell joined AECOM in 2019 as the managing director of Transportation for AECOM’s Europe region and later served as the Transportation Business Line Leader for the Europe and India region.
His experience also includes leading Signalling Renewals for the Network Rail National Programme in the UK along with executive positions at multinational engineering and design firms.
He holds a master of Science in Project Management from Reading University and a Bachelor of Science in Civil Engineering from University College Swansea. Additionally, he is a member of the Association of Project Management and a chartered member of the Institution of Civil Engineers.
Southwell most recently served as the interim chief executive of AECOM’s Transportation global business line and his permanent appointment is effective immediately.

While recognizing regional economic constraints and continuing to improve service, the budget increases the jurisdictional subsidy to less than 1.8%, significantly below the inflation rate and the 3% regional target, said agency officials.
Read More →
Coalition leaders outline priorities for preserving bus funding, maintaining competitive grants, and ensuring flexibility for transit agencies nationwide.
Read More →
In the coming months, the parties will develop an interlocal agreement for the city’s annexation into Community Transit’s district. The proposal will be considered by the Everett City Council and the Community Transit board this fall, said officials.
Read More →
A $6.5 million investment will bring station improvements, rider-friendly features, and workforce opportunities as CTA prioritizes safer, more welcoming transit spaces.
Read More →
In this Consultant Roundtable, AECOM’s transit market leader for the Americas discusses how agencies can align teams, manage complexity, and prepare for the next generation of transit infrastructure and service delivery.
Read More →
Legislation would expand funding for training, apprenticeships, and workforce development as agencies face staffing shortages and evolving technology demands.
Read More →
In this photo gallery, see how transit agencies and sports teams collaborate to move fans efficiently and enhance the game day experience.
Read More →
Under Secretary Duffy, the grant program’s revamped criteria will prioritize safety; the American family; and workforce development, job quality, and wealth creation, according to a press release.
Read More →
Nashville’s fare-free, income-based transit pilot hits a major milestone, expanding access and reshaping daily mobility for thousands of riders.
Read More →
A 5% rise in deliveries and a surge in zero-emission buses signaled progress in 2025, but high costs, long lead times, and shifting funding priorities continue to cloud the outlook.
Read More →