Berger Group Holdings (aka Louis Berger) provides civil, structural, mechanical, electrical, and environmental engineering services for commercial and government projects around the world. It also provides financial services, maintenance, and management services. US-based subsidiary Louis Berger Group has worked on high-profile projects such as the Pennsylvania Turnpike, the redevelopment of the World Trade Center site, and the renovation of the Lincoln Memorial Reflecting Pool. The $1 billion global firm has also built highways, airports, seaports, and dams and contributed to cultural and environmental preservation for projects in 140 countries, even working on reconstruction projects in Iraq and Afghanistan.