The Washington, Colesville and Ashton Turnpike Company was established in 1870 in Maryland in the United States. Its path began at the Washington and Brookeville Turnpike (also known as the Union plank and turnpike road, today's Georgia Avenue), followed the modern path of Colesville Road (US 29) until the crossing of the Northwest Branch at Burnt Mills, where the turnpike took the route of modern Lockwood Drive to join the path of modern New Hampshire Avenue (MD 650) near White Oak north to Colesville and then to Ashton.