Interstate 10 in Louisiana - Auxiliary Routes

Auxiliary Routes

• Interstate 110 is a spur northward through downtown Baton Rouge toward the northern part of the city. It was not in the original plans, but was added in the 1960s to replace the cancelled Interstate 410.
• Interstate 210 is a bypass around the south side of Lake Charles. It was added in 1962.
• Interstate 310 is a spur from I-10 west of New Orleans south to U.S. Highway 90 (future Interstate 49). It was part of a longer Interstate 410 from 1969 to 1977.
  • A previous Interstate 310 was added in 1964 and cancelled in 1969. It would have run from I-10 east of downtown New Orleans south and southwest through the French Quarter to the Greater New Orleans Bridge.
• The first Interstate 410 was a northern bypass of Baton Rouge along the Airline Highway (U.S. Highway 61/190) corridor. It was added in September 1955 and removed by the late 1960s.
  • The second Interstate 410 was defined in 1969 as a southern bypass of New Orleans, as a sort of replacement for the cancelled Interstate 310. The southern section of I-410 was cancelled in 1977, and the west and east legs became Interstate 310 and Interstate 510, respectively.
• Interstate 510 is a spur from I-10 in eastern New Orleans south to the Paris Road Bridge over the Gulf Intracoastal Waterway/(Mississippi River-Gulf Outlet Canal). It was part of a longer Interstate 410 from 1969 to 1977.
• Interstate 610 is a bypass for through traffic north of downtown New Orleans. It was added in September 1955.
• Interstate 910 is a piece of future Interstate 49 from downtown New Orleans south and west to Marrero. The temporary designation was assigned by the Federal Highway Administration and American Association of State Highway Officials in 1999, but is not signed and has not been accepted by the Louisiana Department of Transportation and Development.