| Louisiana Highway 8 | ||||
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| Route information | ||||
| Maintained by Louisiana DOTD | ||||
| Length: | 155.9 mi (250.9 km) | |||
| Existed: | 1955 renumbering – present | |||
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| West end: | 
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| East end: | 
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| Location | ||||
| Parishes: | Vernon, Rapides, Grant, La Salle, Catahoula | |||
| Highway system | ||||
 
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 Louisiana Highway 8 Spur  | 
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| Location: | Flatwoods | 
| Length: | 0.18 mi (0.29 km) | 
Louisiana Highway 8 (LA 8) is a state highway in Louisiana. It spans 156 miles (251 km) beginning at the Louisiana/Texas state line west of Leesville and ending at an intersection with U.S. Route 425 and LA 15 in Sicily Island.
From the west State Highway 63 becomes LA 8 after crossing the Sabine River near Burr Ferry. At the Burr's Ferry Bridge in Vernon Parish, LA 8 heads east, and merges with U.S. Highway 171 north in Leesville. In Leesville, U.S. 171/LA 8 continues north as a four lane, divided road through town. LA 8 breaks off from U.S. 171 at the northern city limits and joins and runs concurrent with LA 28 east, and continues northeastward as a four lane divided Highway. LA 28/LA 8 intersects with LA 468 (The old Slagle road) south just before LA 8 splits and heads northeast as a two lane road, Intersecting with LA 469, passing through Slagle, intersecting LA 121, the LA 465, and passing north of Simpson, before exiting Vernon Parish and entering northwestern Rapides Parish.