New England Interstate Route 19

New England Interstate Route 19 or NE-19 was a 124-mile (200 km) east–west New England Interstate Highway connecting Bethlehem, New Hampshire (at the northern terminus of NE-18) with Brunswick, Maine (at NE-1). While the route was listed in the original 1922 plan, it was never signed in the field.

The modern designations of the original route are:

U.S. Route 302 from Bethlehem, NH to Naples, ME

Maine State Route 11 from Naples, ME to Lewiston, ME

Maine State Route 196 from Lewiston, ME to Brunswick, ME