Former U.S. Transportation Department Secretary Ray LaHood has joined the infrastructure investment firm Meridiam North America as a senior advisor.

From January 2009, to July 2013, LaHood served in the Obama administration as head of the department. Prior to that he served from 1995 to 2009 in the U.S. House of Representatives from the 18th District of Illinois as a Republican.

"We are honored Secretary LaHood has decided to join Meridiam. His broad experience in transportation and infrastructure in the United States will be a valuable asset to the company," said Meridiam's CEO and founding partner Thierry Deau.

Founded in 2005, Meridiam is an independent investment firm specializing in the development, financing, and management of long-term public infrastructure projects in Europe and North America. Currently it manages $3.5 billion of assets that the firm has invested in 32 projects.