Blankenberger Brothers Inc. is an excavation contracting firm founded in 1961. Based in Cynthiana, Ind., the company offers expertise in construction of highways, bridges, water infrastructures, general construction, excavation and commercial land development. It has implemented several projects, including Oaktown Mine, Riverfront Greenway, State Highway 66, State Highway 62 and Burdette Park. Blankenberger Brothers Inc. is a member of the Evansville Chamber of Commerce and Better Business Bureau. It is licensed to do business in Indiana, Illinois and Kentucky.