ARCADIS Awarded $35 Million Contract With Georgia Department of Transportation for Traffic Management

ARNHEM, The Netherlands, June 29, 2010 - ARCADIS (EURONEXT: ARCAD), the international design, consulting,
engineering and management services company, has been selected by the Georgia
Department of Transportation (GDOT) to provide traffic management services
for the Regional Traffic Operations Program. ARCADIS was chosen from among
three finalists for the contract, which has a potential value of $35 million
over five years. The first three task orders valued at around $3 million are
currently negotiated between GDOT and ARCADIS and work should start shortly.

Under the program, GDOT aims to actively manage traffic flow along
important regional commuter corridors in the Atlanta area. ARCADIS services
will include: inventory and diagnostics of existing conditions as well as
field monitoring and reporting. In addition, ARCADIS will collect traffic and
travel time data and look into optimizing traffic management systems using
conventional and adaptive technologies. The company will coordinate with
regional partners and provide active corridor management as part of the
program.

"ARCADIS is privileged to assist GDOT for work on such a state-of-the-art
and innovative delivery of traffic management services," said Marwan Abboud,
Manager of ITS, Intelligent Traffic Solutions, for ARCADIS U.S. "Our thorough
knowledge of the client's needs, the area, the technology, and associated
best practices, are instrumental in offering GDOT cost-effective, smart
solutions to benefit the Metro Atlanta region."

About ARCADIS:

ARCADIS is an international company providing consultancy, design,
engineering and management services in infrastructure, water, environment and
buildings. We enhance mobility, sustainability and quality of life by
creating balance in the built and natural environment. ARCADIS develops,
designs, implements, maintains and operates projects for companies and
governments. With 15,000 employees and EUR 1.8 billion in revenues, the
company has an extensive international network supported by strong local
market positions. ARCADIS supports UN-HABITAT with knowledge and expertise to
improve the quality of life in rapidly growing cities around the world. Visit
us at: www.arcadis.com

PRN NLD

For more information please contact Joost Slooten at +31-26-3778604 - or outside office hours at +31-6-27061880 or via email, joost.slooten at arcadis.com.