Louisiana Highway 433 is a state highway

State highway

State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...

 in Louisiana

Louisiana

Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties...

 that serves St. Tammany Parish

St. Tammany Parish, Louisiana

St. Tammany Parish is a parish located in the U.S. state of Louisiana, in the New Orleans–Metairie–Kenner Metropolitan Statistical Area. The parish seat is Covington....

. It spans 14.86 miles (23.9 km) in a west to east direction. It is known at various points as Thompson Road, Bayou Liberty Road, Pontchartrain Drive, Old Spanish Trail, and Rigolets Road.

Route description

From the west, LA 433 begins at a junction with US 190

U.S. Route 190

U.S. Route 190, also known as the Ronald Reagan Memorial Highway, is an east–west United States highway in Louisiana and Texas. It evolved from the shortest of intrastate routes in 1926 to a length comparable to a main Interstate Highway route, leading from the swamps and pine forests of...

 near the North Shore Mall and heads south. At this point, the roadway is also known as Thompson Road. After about two miles (3 km), the road crosses Bayou Liberty and turns eastward, becoming Bayou Liberty Road. As the road nears downtown Slidell

Slidell, Louisiana

Slidell is a city situated on the northeast shore of Lake Pontchartrain in St. Tammany Parish, Louisiana, United States. The population was 25,695 at the 2000 census. The Greater Slidell Community has a population of about 90,000...

, it crosses Bayou Bonfouca via a drawbridge and becomes a four-lane divided highway. Shortly thereafter, the road joins US 11

U.S. Route 11

U.S. Route 11 is a north–south United States highway extending 1,645 miles across the eastern United States. The southern terminus of the route is at U.S. Route 90 in the Bayou Sauvage National Wildlife Refuge in eastern New Orleans, Louisiana. The northern terminus is at the United...

 and heads southward for about a quarter of a mile before departing eastward along the Old Spanish Trail

Old Spanish Trail (auto trail)

The Old Spanish Trail auto highway once spanned the country with a full of roadway from ocean to ocean crossing 67 counties and eight states along the Southern border of the United States. Work on the auto highway began in 1915 and, by the 1920s, the trail linked St. Augustine, Florida, to San...

. LA 433 then intersects Interstate 10

Interstate 10

Interstate 10 is the fourth-longest Interstate Highway in the United States, after I-90, I-80, and I-40. It is the southernmost east–west, coast-to-coast Interstate Highway, although I-4 and I-8 are further south. It stretches from the Pacific Ocean at State Route 1 in Santa Monica,...

 via a diamond interchange (Exit 263). Afterward it narrows to two lanes and winds through the swamps of southeast St. Tammany Parish. Heading southeastward, the highway is duly known as Rigolets Road and the Old Spanish Trail

Old Spanish Trail (auto trail)

The Old Spanish Trail auto highway once spanned the country with a full of roadway from ocean to ocean crossing 67 counties and eight states along the Southern border of the United States. Work on the auto highway began in 1915 and, by the 1920s, the trail linked St. Augustine, Florida, to San...

 at this point. LA 433 ends at a junction with US 90

U.S. Route 90

U.S. Route 90 is an east–west United States highway. Despite the "0" in its route number, U.S. 90 never was a full coast-to-coast route; it has always ended at Van Horn, Texas. A short-lived northward extension to U.S...

 just north of the Rigolets

Rigolets

The Rigolets is a 12.9 kilometer long strait in Louisiana.It begins at and follows a generally eastward course to Lake Borgne, which is a lagoon in the Gulf of Mexico, where it ends at . Along with nearby Chef Menteur Pass, the Rigolets connects Lake Pontchartrain and Lake St. Catherine to Lake...

.

LA 433 is an undivided, two-lane highway from US 190

U.S. Route 190

U.S. Route 190, also known as the Ronald Reagan Memorial Highway, is an east–west United States highway in Louisiana and Texas. It evolved from the shortest of intrastate routes in 1926 to a length comparable to a main Interstate Highway route, leading from the swamps and pine forests of...

 to US 11

U.S. Route 11

U.S. Route 11 is a north–south United States highway extending 1,645 miles across the eastern United States. The southern terminus of the route is at U.S. Route 90 in the Bayou Sauvage National Wildlife Refuge in eastern New Orleans, Louisiana. The northern terminus is at the United...

. The route then widens to an undivided, five-lane roadway (with a middle turning lane) while concurrent with US 11

U.S. Route 11

U.S. Route 11 is a north–south United States highway extending 1,645 miles across the eastern United States. The southern terminus of the route is at U.S. Route 90 in the Bayou Sauvage National Wildlife Refuge in eastern New Orleans, Louisiana. The northern terminus is at the United...

. LA 434 narrows slightly to a divided, four-lane road from US 11

U.S. Route 11

U.S. Route 11 is a north–south United States highway extending 1,645 miles across the eastern United States. The southern terminus of the route is at U.S. Route 90 in the Bayou Sauvage National Wildlife Refuge in eastern New Orleans, Louisiana. The northern terminus is at the United...

 to just east of Interstate 10

Interstate 10

Interstate 10 is the fourth-longest Interstate Highway in the United States, after I-90, I-80, and I-40. It is the southernmost east–west, coast-to-coast Interstate Highway, although I-4 and I-8 are further south. It stretches from the Pacific Ocean at State Route 1 in Santa Monica,...

. From just east of Interstate 10

Interstate 10

Interstate 10 is the fourth-longest Interstate Highway in the United States, after I-90, I-80, and I-40. It is the southernmost east–west, coast-to-coast Interstate Highway, although I-4 and I-8 are further south. It stretches from the Pacific Ocean at State Route 1 in Santa Monica,...

 to its terminus at US 90

U.S. Route 90

U.S. Route 90 is an east–west United States highway. Despite the "0" in its route number, U.S. 90 never was a full coast-to-coast route; it has always ended at Van Horn, Texas. A short-lived northward extension to U.S...

, LA 433 is an undivided, two-lane highway

Junction list

Parish	Location	Mile	Junction	Notes
St. Tammany St. Tammany Parish, Louisiana St. Tammany Parish is a parish located in the U.S. state of Louisiana, in the New Orleans–Metairie–Kenner Metropolitan Statistical Area. The parish seat is Covington....	Slidell Slidell, Louisiana Slidell is a city situated on the northeast shore of Lake Pontchartrain in St. Tammany Parish, Louisiana, United States. The population was 25,695 at the 2000 census. The Greater Slidell Community has a population of about 90,000...	2		Western terminus of LA 433
		0.00	US 190 U.S. Route 190 U.S. Route 190, also known as the Ronald Reagan Memorial Highway, is an east–west United States highway in Louisiana and Texas. It evolved from the shortest of intrastate routes in 1926 to a length comparable to a main Interstate Highway route, leading from the swamps and pine forests of...  (Gause Boulevard West)
		6.5	US 11 U.S. Route 11 U.S. Route 11 is a north–south United States highway extending 1,645 miles across the eastern United States. The southern terminus of the route is at U.S. Route 90 in the Bayou Sauvage National Wildlife Refuge in eastern New Orleans, Louisiana. The northern terminus is at the United... (Front Street to the north) (Pontchartrain Drive to the south)	US 11 departs to the north LA 433 turns onto Pontchartrain Drive
		Begin concurrency
		6.8	US 11 U.S. Route 11 U.S. Route 11 is a north–south United States highway extending 1,645 miles across the eastern United States. The southern terminus of the route is at U.S. Route 90 in the Bayou Sauvage National Wildlife Refuge in eastern New Orleans, Louisiana. The northern terminus is at the United...  (Pontchartrain Drive)	US 11 departs to the south LA 433 turns onto Old Spanish Trail
		End concurrency
		8.6	I-10 Interstate 10 in Louisiana Interstate 10, a major transcontinental Interstate Highway in the Southern U.S., runs across the southern part of the U.S. state of Louisiana. It passes through Lake Charles, Lafayette and Baton Rouge before dipping south of Lake Pontchartrain to serve the New Orleans area and then passing through...	Exit 263/Diamond Interchange
		14.86	US 90 U.S. Route 90 U.S. Route 90 is an east–west United States highway. Despite the "0" in its route number, U.S. 90 never was a full coast-to-coast route; it has always ended at Van Horn, Texas. A short-lived northward extension to U.S...
		Eastern terminus of LA 433