Louisiana Highway 3081
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| Route information | ||||
| Maintained by Louisiana DOTD | ||||
| Length: | 2.2 mi (3.5 km) | |||
| Existed: | 1965 – present | |||
| Major junctions | ||||
| South end: |
  US 11 / LA 41 in Pearl River
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| North end: |
 I-59 / US 11 in Pearl River |
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| Location | ||||
| Parishes: | St. Tammany | |||
| Highway system | ||||
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| Location: | Pearl River |
| Length: | 0.30 mi (0.48 km) |
| Existed: | 2007–present |
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Louisiana Highway 3081 (LA 3081) is a state highway in Louisiana that serves St. Tammany Parish. It spans a total of 2.2 miles (3.5 km) largely over a former alignment of both U.S. 11 and U.S. 90 in the town of Pearl River.
From the south, LA 3081 begins at an intersection with U.S. 11 and LA 41 (Watts Road) near the southern limit of Pearl River. It heads northward along Main Street, paralleling Interstate 59 (I-59) and U.S. 11 to the west, to a junction with LA 3081 Spur at Pine Street. At this point, the route turns east briefly to an interchange with southbound I-59 and U.S. 11, which are concurrent. LA 3081 then turns northeast alongside the interstate, looping back southwest underneath the I-59/U.S. 11 West Pearl River bridge to the other half of the interchange, serving northbound I-59/U.S. 11 traffic, and reaching its northern terminus.
LA 3081 is an undivided, two-lane highway for its entire length.
The portion of LA 3081 running along Main Street through Pearl River was originally part of the Old Spanish Trail, designated as State Route 2 from 1921 until the 1955 Louisiana Highway renumbering. The route headed north along Main Street, crossed a bridge over the West Pearl River, and proceeded northeast along the road now known as Old U.S. 11 to a second bridge over the Pearl River at the Mississippi state line. In 1926, this became the original route of U.S. 90 (at first, concurrent with LA 2 across the state of Louisiana). After U.S. 90 assumed its current alignment between the Rigolets Bridge and Pearlington, Mississippi, U.S. 11 was extended from its former terminus in Mississippi and assigned to the route in 1938.
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