 Nearly the entire route of LA 2 west of Lisbon constitutes the main path of the Boom or Bust Byway in the state-designated system of tourist routes known as the Louisiana Scenic Byways.In the original Louisiana Highway system in use between 1921 and 1955, the modern LA 2 made up parts of several routes, including State Route 202 from the western terminus at the Texas state line to the intersection with the modern LA 1 south of Vivian; State Route 8 to Vivian; State Route 109 to Plain Dealing; State Route 70 to Shongaloo; State Route 66 to Leton; State Route 490 to Homer; State Route 11 to Lisbon; State Route 489 to Bernice; State Route 11 again to Farmerville; State Route 815 to the intersection with the modern LA 143 west of Sterlington; and State Route 11 once again to the eastern terminus north of Lake Providence.LA 2 was created with the 1955 Louisiana Highway renumbering, and its route has seen two significant alignment changes—the bypassing of Homer and a re-routing through Webster Parish—and a series of other improvements.