From Washington, DC and Maryland:
Take Route I-270 North to I-70 West to I-81 North. Take Exit 3 Molly Pitcher Highway (Greencastle, PA). Take a left at the end of the exit. Mason Dixon Auto Auction is located less than 1/4 mile on the right.

From Harrisburg, PA:
I-81 South to Exit 3 Molly Pitcher Highway (Greencastle, PA). Take a right at the end of the exit. Mason Dixon Auto Auction is located less than 1/8 of a mile on the right.