Interstate 12

I-12
Republic of West Florida Parkway
I-12 highlighted in red
Route information
Length	86.653 mi[1][a] (139.454 km)
Existed	1967–present
NHS	Entire route
Major junctions
West end	I-10 in Baton Rouge
Major intersections	US 61 in Baton Rouge I-55 in Hammond US 190 between Covington and Mandeville US 11 in Slidell
East end	I-10 / I-59 in Slidell
Location
Country	United States
State	Louisiana
Parishes	East Baton Rouge, Livingston, Tangipahoa, St. Tammany
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future Louisiana State Highway System Interstate US State Scenic
← US 11 LA 12 →

Interstate 12 is a 85.59 miles (137.74 km) long Interstate Highway in Louisiana, connecting Interstate 10 at each end. It goes from Baton Rouge to Slidell.

1. ↑ "La DOTD GIS Data". Louisiana Department of Transportation and Development. September 2015. Retrieved May 23, 2017.
2. ↑ "FHWA Route Log and Finder List / Table 1: Main Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways as of December 31, 2016". Federal Highway Administration. February 22, 2017. Retrieved May 23, 2017.