In 1955, Mr. Harold R. Bone, Sr. opened Road Machinery Co. in Phoenix, Arizona to sell and service heavy machinery. The company's first products included street sweepers, motor graders and compressors, and, for the mining industry, WABCO/Haulpak trucks.

In 2000, Road Machinery Co. was purchased by Komatsu America. In the spring of 2005, Komatsu sold Road Machinery to Mitsui & Co., LTD (a $50 Billion dollar corporation) and then in 2008, Road Machinery purchased Shanahan, which was the Komatsu dealer for almost all of California. Road Machinery LLC now has 14 facilities throughout Arizona, California, New Mexico, including one in El Paso, Texas and two in Mexico.

We sell, service and rent quality construction, mining and forestry equipment from Komatsu; milling, compacting and paving equipment from Wirtgen Corporation (Includes Hamm, Vögele and Wirtgen products); quality attachments from NPK, Hensley and JRB corporation as well as other products like rock screens, crushers and water towers.