Number of Miles 85 Louisiana - 85 miles Major Cities Along the Route Baton Rouge, Louisiana Intersections with other Interstates Interstate 10 in Baton Rouge, Louisiana Interstate 55 in Hammond, Louisiana Interstate 10 in Alton, Louisiana Spur Routes None Notes As this highway is a loop of I-10, some think that it would be better as a 3di instead of I-12. There is a good chance that I-12 will overlap I-10 between Baton Rouge, Louisiana and Houston, Texas in the future, and from Houston, Texas, I-12 will be extended along U.S. 290 to Austin, Texas at Interstate 35.
Notes As this highway is a loop of I-10, some think that it would be better as a 3di instead of I-12. There is a good chance that I-12 will overlap I-10 between Baton Rouge, Louisiana and Houston, Texas in the future, and from Houston, Texas, I-12 will be extended along U.S. 290 to Austin, Texas at Interstate 35.