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The U.S. Highway System in Louisiana consists of 2,490.851 miles (4,008.636 km) of mainline highway routes and 107.785 miles (173.463 km) of special routes (both figures including concurrencies) that are constructed and maintained by the Louisiana Department of Transportation and Development (La DOTD).
A Louisiana Highway Department gravel truck driver pauses in front of his orange-colored vehicle (1972). The new Louisiana Constitution of 1976 (adopted in 1974) and Act 83 of 1977 abolished the Departments of Highways and Public Works and restructured them into the Department of Transportation and Development (DOTD), thereby encompassing related activities such as highways, public works ...
Along Blackwater Road LA 411: 11.515: 18.532 LA 76 in Rosedale: US 190 and LA 78 in Livonia: 1955: current LA 412: 9.938: 15.994 LA 964 west of Slaughter: LA 67 east of Slaughter 1955: current LA 413: 23.741: 38.207 LA 76 south of Erwinville: LA 1 Bus. in New Roads: 1955: current LA 414: 10.550: 16.979 LA 413 north of Lakeland
The Interstate Highway System in Louisiana consists of 933.84 miles (1,502.87 km) [4] of freeways constructed and maintained by the Louisiana Department of Transportation and Development (La DOTD). The system was authorized on June 29, 1956 when President Dwight D. Eisenhower signed into law the Federal Aid Highway Act of 1956 . [ 1 ]
In some areas, especially along the U.S. coast, polluted runoff from roads and highways may be the largest source of water pollution. For example, about 75 percent of the toxic chemicals getting to Seattle, Washington's Puget Sound are carried by stormwater that runs off paved roads and driveways, rooftops, yards, and other developed land. [6]
Massive barges brought over a million gallons of fresh water to Plaquemines Parish, Louisiana, on Monday as the community tackles the intrusion of saltwater that’s threatening drinking supplies.
Specific aspects of road conditions can be of particular importance for particular purposes. For example, for autonomous vehicles such as self-driving cars, significant road conditions can include "shadowing and lighting changes, road surface texture changes, and road markings consisting of circular reflectors, dashed lines, and solid lines". [71]
The water supply corporation fills the tank, and residents have to haul water from the tank to their homes since regular water service stopped in 2019. Credit: Annie Mulligan for The Texas Tribune