Louisiana Highway 3046
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| Causeway Boulevard | ||||
| Route information | ||||
| Maintained by Louisiana DOTD | ||||
| Length: | 1.0 mi (1.6 km) | |||
| Existed: | c. 1957 – present | |||
| Major junctions | ||||
| South end: |
 US 90 in Jefferson
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| North end: |
 US 61 in Metairie
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| Location | ||||
| Parishes: | Jefferson | |||
| Highway system | ||||
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| Location: | Metairie |
| Length: | 0.28 mi (0.45 km) |
| Existed: | 1960s–2010 |
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Louisiana Highway 3046 (LA 3046) is a state highway in Louisiana that serves Jefferson Parish. It spans 1.0 mile (1.6 km) in a south to north direction. It is known locally as Causeway Boulevard.
From the south, LA 3046 begins in Jefferson at an interchange with U.S. 90 (Jefferson Highway). It heads north and immediately becomes elevated to cross several railroad tracks and LA 3139 (Earhart Expressway). LA 3046 ends at a multi-level traffic circle interchange with U.S. 61 (Airline Drive) in Metairie. Causeway Boulevard continues northward through Metairie to I-10 (Exit 228) and ultimately the Lake Pontchartrain Causeway.
LA 3046 is a divided, four-lane highway for its entire length.
LA 3046 began as part of the Greater New Orleans Expressway, a 1950s project to transform the century-old Harlem Avenue right-of-way into a multilane highway connecting U.S. 90 (Jefferson Highway), U.S. 61 (Airline Highway, now Drive), and Veterans Memorial Highway (now Boulevard) to the Lake Pontchartrain Causeway then under construction. Harlem Avenue would be renamed Causeway Boulevard. The expressway's name survives in the Greater New Orleans Expressway Commission which maintains and patrols the Causeway bridge.
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