 CR 510 comes to its eastern terminus at an intersection with Route 21 near Newark Penn Station, with Market Street continuing east under Amtrak's Northeast Corridor to provide access to Raymond Boulevard.The section running from Chester to Morristown was originally created as part of the Washington Turnpike, which stretched from Morristown to Philipsburg.This road was later incorporated into the William Penn Highway, which ran from Jersey City to Philipsburg.