WACO, TEXAS — Tractor Supply Co. has broken ground on the $10.2 million expansion of its distribution center located at 2801 Corporation Pkwy. on Interstate 35 in Waco. The project will increase the size of the facility, which was built in 2003, from 305,000 square feet to a 654,221-square-foot space. The center currently services 135 stores in Texas, Oklahoma and Arkansas, and will soon increase to include stores in Louisiana, Mississippi and New Mexico. The distribution center for the company, which operates more than 750 stores in 43 states, has been located in Waco for 10 years.