List LA 1 to LA 99 LA 100 to LA 199 LA 300 to LA 399 LA 400 to LA 499 LA 500 to LA 599 LA 600 to LA 699 LA 700 to LA 799 LA 800 to LA 899 LA 900 to LA 999 LA 1000 to LA 1099 LA 1100 to LA 1199 LA 1200 to LA 1299 LA 3000 to LA 3099 LA 3100 to LA 3199 LA 3200 to LA 3299 Unbuilt state highways LA 3145: unbuilt Ivanhoe–Jeanerette highway (1970s) See also List of state highways in Louisiana (pre-1955) References Footnotes Works cited External links Maps / GIS Data Homepage, Louisiana Department of Transportation and Development State highways