The U.S. Green Building Council has given its highest rating for environmental responsibility to the Oregon Department of Transportation's remodeled headquarters building in Salem.
ODOT said Friday that the building received the LEED platinum certification.
The building was originally built in 1951. It was closed in 2010 for a massive remodeling project and re-opened a year ago. Among its environmentally sustainable features are efficient heating and cooling systems, rooftop solar panels and reduced water use.