Department of Energy’s Superior Energy Performance® (SEP™) Platinum certification in the Mature Energy Pathway. In 2013, the plant became the first site to earn the U.S. Today, the facility is also a model for energy efficiency improvements. The site has also invested in new equipment to improve post-production testing and inspection processes to ensure the highest quality standards are met. Recent investments in the plant have further streamlined the production process, with revised sub-assembly and material handling processes to improve production efficiency. With a 700-strong workforce, the first trucks produced at Mack Lehigh Valley Operations included Mack CF model fire apparatus, Mack F model cabover highway trucks and off-highway models like the Mack M series mining trucks and the Mack Pack articulated bottom dump. The plant’s layout was designed in-house by Mack employees, without the help of outside consultants, to maximize manufacturing efficiency and flexibility. Construction began shortly thereafter, and the facility was completed in less than one year. Site preparation for the one million square-foot facility began in May 1974. “Each employee’s precision and dedication also has helped solidify Mack’s reputation for building some of the toughest, highest-quality and most durable trucks on the road.” “Over the past 40 years, we have proudly assembled thousands of Mack models for customers around the world,” said Stephen Roy, president of Mack Trucks North America. Today, all Mack trucks built for North America and export are assembled at the facility. The first highway truck assembled at the plant, a Mack® F711ST model, rolled off the production line on Nov. Mack Trucks today celebrated the 40th anniversary of the Mack Lehigh Valley Operations manufacturing facility located in Lower Macungie Township, Pennsylvania.

Mack truck manufacturing locations