Note 21 — Buttrick’s Voyages, Travels, and Discoveries 1812–1819
Reading edition
This road extended from Columbia, Tennessee, forty-five miles south-west of Nashville to Madisonville, Louisiana, two miles north of Lake Pontchartrain. It was begun under the direction of the war department (March, 1816), and was one of three roads constructed about that time by United States troops.—Ed.