Interstate 55 in Louisiana

Interstate 55
Route information
Maintained by Louisiana DOTD
Length:	65.81 mi (105.91 km)
Existed:	1957 (designated); 1960 (signed); 1979 (completed) – present
Major junctions
South end:	I-10 in LaPlace
	US 51 north of LaPlace US 51 south of Hammond I-12 in Hammond US 190 in Hammond
North end:	I-55 at the Mississippi state line north of Kentwood
Location
Parishes:	St. John the Baptist, Tangipahoa
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Louisiana Highway System Interstate US State ← LA 54 LA 55 →

US 51 north of LaPlace
US 51 south of Hammond
I-12 in Hammond

Interstate 55 (I-55) is an Interstate Highway that spans a total of 65.81 miles (105.91 km) in a north–south direction in the U.S. state of Louisiana. It is located in the southeastern portion of the state and parallels the older U.S. Highway 51 (US 51) corridor from the national southern terminus at I-10 in LaPlace to the Mississippi state line north of Kentwood. Along the way it passes through the city of Hammond, where it intersects two of the state's major east–west routes, I-12 and US 190. It also serves the smaller city of Ponchatoula, as well as the towns of Amite City and Kentwood.

...
Wikipedia