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 51. It also serves the smaller cities of Denham Springs and Ponchatoula, as well as the St. Tammany Parish cities of Covington and Mandeville. Skirting the northern shore of Lake Pontchartrain, I-12 serves as a northern bypass of the New Orleans metropolitan area and as an alternate route for I-10, which serves the city of New Orleans itself.
West Baton Rouge Parish is one of the sixty-four parishes in the U.S. state of Louisiana. As of the 2010 census, the population was 23,788. The parish seat is Port Allen. The parish was created in 1807.
The Jefferson Highway was an automobile highway stretching through the central United States from New Orleans, Louisiana, to Winnipeg, Manitoba, Canada. The Jefferson Highway was replaced with the new numbered US Highway system in the late 1920s. Portions of the highway are still named Jefferson Highway, for example: the portions that run through Jefferson Parish, Louisiana; East Baton Rouge Parish, Louisiana; Lee's Summit, Missouri; Osseo, Minnesota; and Wadena, Minnesota.
U.S. Route 71 is a major north–south United States highway that extends for over 1500 miles in the central United States. This original 1926 route has remained largely unchanged by encroaching Interstate highways. Currently, the highway's northern terminus is in International Falls, Minnesota at the Canada–US border, at the southern end of the Fort Frances-International Falls International Bridge to Fort Frances, Ontario. U.S. Route 53 also ends here. On the other side of the bridge, Trans-Canada Highway 11 is an east–west route. US 71's southern terminus is between Port Barre and Krotz Springs, Louisiana at an intersection with U.S. Route 190.
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.
Airline Highway is a divided highway in the U.S. state of Louisiana, built in stages between 1925 and 1953 to bypass the older Jefferson Highway. It runs 115.6 miles (186.0 km), carrying U.S. Highway 61 from New Orleans northwest to Baton Rouge and U.S. Highway 190 from Baton Rouge west over the Mississippi River on the Huey P. Long Bridge. US 190 continues west towards Opelousas on an extension built at roughly the same time.
Louisiana Highway 1 (LA 1) is a state highway in Louisiana. At 431.88 miles (695.04 km), it is the longest numbered highway of any class in Louisiana. It runs diagonally across the state, connecting the oil and gas fields near the island of Grand Isle with the northwest corner of the state, north of Shreveport.
Louisiana Highway 10 (LA 10) is a state highway located in southern Louisiana. It runs 255.51 miles (411.20 km) in an east–west direction from U.S. Highway 171 (US 171) south of Leesville to the Mississippi state line east of Bogalusa.
Louisiana Highway 12 (LA 12) is a state highway located in southwestern Louisiana. It runs 34.64 miles (55.75 km) in an east–west direction from the Texas state line west of Starks to a junction with U.S. Highway 171 (US 171) and U.S. Highway 190 (US 190) in Ragley.
Louisiana Highway 25 (LA 25) is a state highway located in southeastern Louisiana. It runs 38.72 miles (62.31 km) in a north–south direction from U.S. Highway 190 (US 190) in Covington to the Mississippi state line north of Warnerton.
Louisiana Highway 81 (LA 81) is a state highway located in Pointe Coupee Parish, Louisiana. It runs 8.82 miles (14.19 km) in a generally north–south direction from LA 77 in Livonia to a second junction with LA 77 in Fordoche.
Louisiana Highway 78 (LA 78) is a state highway located in Pointe Coupee Parish, Louisiana. It runs 7.55 miles (12.15 km) in a north–south direction from a junction with U.S. Highway 190 (US 190) and LA 411 in Livonia to LA 1 in Parlange.
Elliot City is a ghost town that was located in Pointe Coupee Parish's 10th Ward, approximately 6 miles west of Livonia, Louisiana United States. The site of the town itself is located at coordinates 30.55614N, 91.66520W, and is covered or partially covered by the current U.S. Route 190 roadway.
Louisiana Highway 59 (LA 59) is a state highway located in St. Tammany Parish, Louisiana. It runs 11.74 miles (18.89 km) in a north–south direction from U.S. Highway 190 (US 190) in Mandeville to LA 21 north of Abita Springs.
U.S. Highway 61/190 Business is a state highway in Louisiana that serves East Baton Rouge Parish. It spans 10.89 miles (17.53 km) in a southeast to northwest direction and it is bannered as Business 61/190, with no directional shields. It generally follows the 1940s-1950s alignment of US 61/190 through Baton Rouge.
