Interstate 55 in Louisiana

Interstate 55 Main route of the Interstate Highway System
Length:	65.81 mi (105.91 km)
Formed:	BC 1957 (route proposed in BC 1939)
South end:	I-10 near Laplace
Major junctions:	I-12 near Hammond US 190 in Hammond
North end:	I-55 at the Mississippi line
Highways in Louisiana

In Louisiana, Interstate 55 runs nearly 66 miles (106 km) from south to north, from Interstate 10 near Laplace - roughly 20 miles (32 km) west of New Orleans - to the Mississippi state line near Kentwood.

The highway first traverses a 23 mile long viaduct over the swamps of lakes Maurepas and Pontchartrain before reaching dry land near Ponchatoula.

Exit list

Parish	Location	Exit #	Destinations	Notes
St. John the Baptist			I-10 east – New Orleans	Southbound exit, northbound entrance
		1	US 51 to I-10 – Laplace, Baton Rouge	Southbound exit, northbound entrance South end of US 51 concurrency
		7	Ruddock
Tangipahoa		15	Manchac
		22	Frontage Road	Southbound exit and northbound entrance. Frontage road is Old U.S. 51.
		23	US 51 Bus. – Ponchatoula
		26	LA 22 – Ponchatoula, Springfield
		28	US 51 north – Hammond	North end of US 51 concurrency
		29A-B	I-12 – Slidell, Baton Rouge
	Hammond	31	US 190 – Albany, Hammond
		32	LA 3234 (University Avenue) / Wardline Road	Exit to reach Southeastern Louisiana University.
		36	LA 442 – Tickfaw
		41	LA 40 – Independence
	Amite City	46	LA 16 – Montpelier, Amite City
		50	LA 1048 – Arcola, Roseland
		53	LA 10 – Fluker, Greensburg
		57	LA 440 – Tangipahoa
		61	LA 38 – Kentwood, Liverpool

References

Interstate 55
Previous state: Terminus	Louisiana	Next state: Mississippi