Bentley Acquires TDV GmbH, Leader in Analysis and Design Software for Bridges

Bentley Systems, Incorporated today announced that it has acquired
TDV GmbH of Austria, a leading provider of structural modeling,
analysis, and design software for bridge engineering serving
engineers, designers, and owners since 1970.

TDV's industry-leading RM 2006 product for static and dynamic
design and analysis of steel, concrete, and composite structures is
used by hundreds of bridge design firms worldwide. The software is
applicable to the design of virtually all bridge types - from simple
segmented bridges to complex cable-stayed and suspension bridges to
long crossings - and has been proven on thousands of projects. A
number of these bridges have achieved historic milestones and are, or
will soon become, global landmarks. Examples include:

-- Stonecutters Bridge in Hong Kong, which has a main span of
1018 meters, making it the first cable-stayed bridge ever
designed with a main span longer than 1000 meters

-- The 8206-kilometer-long Sutong Bridge in China, which will
cross the Yangze River and include a multi-span cable-stayed
section with a world-record-setting longest span of 1088
meters

-- Hardanger Bridge in Norway, a suspension bridge that will have
a main span of approximately 1310 meters

-- The new Woodrow Wilson Bridge in the United States, which will
consist of two side-by-side bascule bridges each 1852 meters
in length

"This acquisition exemplifies Bentley's strategic focus on
providing comprehensive software solutions for infrastructure
projects," said Bhupinder Singh, senior vice president, Bentley
Software. "RM 2006 adds sophisticated, advanced structural analysis
capabilities to Bentley's market-leading structural design solutions,
including our RAM and STAAD product lines, and expands our
transportation design portfolio to encompass all elements of a roadway
or rail design project."

By integrating the capabilities of RM 2006 with those of Bentley's
recently acquired BridgeKey software for load analysis rating and
heavy-load permitting on existing bridges, as well as its GEOPAK
Bridge, InRoads Bridge, Bentley Rebar, Bentley PowerRebar, and other
products, Bentley now provides a true end-to-end bridge design and
management solution. This opens the door to streamlined workflows and
significant productivity improvements for organizations in the roadway
and bridge sectors.

RM 2006 provides built-in time dimension, parametric geometry
definition, and integrated tendon design, allowing sophisticated
calculation of time-dependent properties for all bridge types and
construction sequences. In addition, it supports design to a full
array of international design codes, including AASHTO Load and
Resistance Factor Design (LRFD) Bridge Specifications, and offers
highly sophisticated linear and nonlinear analysis options. These
options include segmental construction loading, stage construction and
erection control, stochastic wind event design, computational fluid
dynamics (CFD), wind tunnel simulation, and more.

Said Singh, "With the software's advanced parametric modeling and
construction sequence-based analysis, bridge designers will be able to
model and analyze every stage of the bridge construction project. In
addition to staged construction analysis, the design team can now
consider dynamic load conditions from wind, water, and high-speed
trains."

Said Dorian Janjic, former managing director of TDV and now vice
president of Bentley Software's bridge engineering group, "On behalf
of all of my colleagues at TDV, I want to say how pleased we are to be
joining the Bentley team. Bentley's comprehensive portfolio of fully
integrated road and railway software, coupled with its global reach,
will enable us to offer our users more complete and scalable solutions
that will lead to even greater success on their projects."

For more information about Bentley's TDV line of solutions and
services, go to www.tdv.at/wse/index.htm.

About Bentley

Bentley Systems, Incorporated provides software for the lifecycle
of the world's infrastructure. The company's comprehensive portfolio
for the building, plant, civil, and geospatial verticals spans
architecture, engineering, construction (AEC) and operations. With
revenues now surpassing $400 million annually, and more than 2400
colleagues globally, Bentley is the leading provider of AEC software
to the Engineering News-Record Top Design Firms and major
owner-operators, and was named the world's No. 2 provider of
GIS/geospatial software solutions in a recent Daratech research study.

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www.bentley.com/bentleywire. For more information, visit
www.bentley.com. To view a copy of Bentley's April 2007 Annual Report
online, go to www.bentley.com/April2007annualreport.

Bentley, the "B" logo, RM 2006, BridgeKey, GEOPAK, GEOPAK Bridge,
InRoads, InRoads Bridge, Bentley Rebar, Bentley PowerRebar, RAM, and
STAAD are either registered or unregistered trademarks or service
marks of Bentley Systems, Incorporated or one of its direct or
indirect wholly-owned subsidiaries. All other trademarks are the
property of their respective owners.