Interstate 10 (I-10) is the southernmost cross-country highway in the American Interstate Highway System. I-10 is the fourth-longest Interstate in the United States at 2,460.34 miles (3,959.53 km), following I-90, I-80, and I-40. This freeway is part of the originally planned network that was laid out in 1956, and its last section was completed in 1990.
Interstate 12 (I-12) is an Interstate Highway located entirely within the U.S. state of Louisiana. It spans a total of 86.65 miles (139.45 km) in an east–west direction from I-10 in Baton Rouge to an interchange with both I-10 and I-59 in Slidell. Along the way, it passes through the city of Hammond, where it intersects I-55 and US Route 51 (US 51). It also serves the cities of Ponchatoula and Denham Springs, as well as the St. Tammany Parish cities of Covington and Mandeville. Skirting the northern shore of Lake Pontchartrain, I-12 serves as both a northern bypass of the New Orleans metropolitan area and an alternate route for I-10, which serves the city of New Orleans itself.
Interstate 59 (I-59) is an Interstate Highway located in the southeastern United States. It is a north–south route that spans 445.23 miles (716.53 km) from a junction with I-10 and I-12 at Slidell, Louisiana, to a junction with I-24 near Wildwood, Georgia.
St. Tammany Parish is a parish located in the U.S. state of Louisiana named after Tamanend, the Legendary Principle Lenape Chief & the "Patron Saint of America." At the 2010 census, the population was 233,740, making it the fifth-most populous parish in Louisiana. In 2020, its population was 264,570. The parish seat is Covington. The parish was founded in 1810.
Pineville is a city in Rapides Parish, Louisiana, United States. It is located across the Red River from the larger Alexandria. Pineville is hence part of the Alexandria Metropolitan Statistical Area. The population was 14,555 at the 2010 census. It had been 13,829 in 2000; population hence grew by 5 percent over the preceding decade.
Covington is a city in, and the parish seat of, St. Tammany Parish, Louisiana, United States. The population was 11,564 at the 2020 United States census. It is located at a fork of the Bogue Falaya and the Tchefuncte River. Covington is part of the New Orleans–Metairie–Kenner metropolitan statistical area.
Lacombe is a census-designated place (CDP) in St. Tammany Parish, Louisiana, United States. The population was 8,679 at the 2010 census.
Slidell is a city on the northeast shore of Lake Pontchartrain in St. Tammany Parish, Louisiana, United States. The population was 28,781 at the 2020 census. It is part of the New Orleans−Metairie−Kenner metropolitan statistical area.
U.S. Route 11 or U.S. Highway 11 is a major north–south United States highway extending 1,645 miles (2,647 km) 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 Rouses Point–Lacolle 223 Border Crossing in Rouses Point, New York. The route continues across the border into Canada as Quebec Route 223. US 11, created in 1926, maintains most of its original route. The route north of Knoxville, TN follows a route similar to I-81.
U.S. Route 190 (US 190) is an east–west United States Highway in Louisiana and Texas. Segments of US 190 will be upgraded to Interstate 14 (I-14); the first 24.8-mile (39.9 km) segment was opened on January 26, 2017.
Interstate 10 (I-10), a major transcontinental Interstate Highway in the Southern United States, runs across the southern part of Louisiana for 274.42 miles (441.64 km) from Texas to Mississippi. It passes through Lake Charles, Lafayette, and Baton Rouge, dips south of Lake Pontchartrain to serve the New Orleans metropolitan area, then crosses Lake Pontchartrain and leaves the state.
U.S. Highway 90 (US 90), one of the major east–west U.S. Highways in the Southern United States, runs through southern Louisiana for 297.6 miles (478.9 km), serving Lake Charles, Lafayette, New Iberia, Morgan City, and New Orleans. Much of it west of Lafayette and east of New Orleans has been supplanted by Interstate 10 (I-10) for all but local traffic, but the section between Lafayette and New Orleans runs a good deal south of I-10.
Louisiana Highway 47 (LA 47) is a state highway located in southeastern Louisiana. It runs 15.91 miles (25.60 km) in a general southeast to northwest direction from the Mississippi River levee in Chalmette to the intersection of Hayne Boulevard and Downman Road in New Orleans.
U.S. Highway 11 (US 11) is a part of the United States Numbered Highway System that spans 1,756 miles (2,826 km) from New Orleans, Louisiana to Rouses Point, New York. Within the state of Louisiana, the highway travels 31 miles (50 km) from the national southern terminus at US 90 in New Orleans to the Mississippi state line south of Picayune.
Louisiana Highway 41 (LA 41) is a state highway located in St. Tammany Parish, Louisiana. It runs 23.07 miles (37.13 km) in a north–south direction from the junction of U.S. Highway 11 (US 11) and LA 3081 in Pearl River to LA 21 in Bush.
Alton is an unincorporated community in St. Tammany Parish, Louisiana, United States. The community is located 3 mi (4.8 km) north of Slidell on U.S. Route 11 1.25 miles north of I-12.
Big Branch is an unincorporated community in St. Tammany Parish, Louisiana, United States. The community is located on U. S. Route 190 5 mi (8.0 km) southeast of Mandeville and 3.5 miles northwest of Lacombe.
Haaswood is an unincorporated community in St. Tammany Parish, Louisiana, United States. The community is located 3 mi (4.8 km) north-northeast of Slidell on Louisiana Highway 1091 and 1 mi (1.6 km) miles east of Alton.
