The Kenworth truck assembly plant in Chillicothe, Ohio, celebrates 50 years of building the World’s Best® trucks. The plant officially opened on March 4, 1974, and the plant’s first truck – a Kenworth W900 – rolled off the assembly line a day later.

Since then, Kenworth Chillicothe plant employees have produced more than 782,000 trucks in alignment with the company’s core values of quality, innovation and state-of-the-art technology. The plant employs approximately 2,500 people, one of the largest employers in Ross County (where Chillicothe resides), and is Kenworth’s largest manufacturing facility.