Louisiana Highway 434
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| Route information | ||||
| Maintained by Louisiana DOTD | ||||
| Length: | 10.79 mi (17.36 km) | |||
| Major junctions | ||||
| South end: | Barringer Road south of Lacombe | |||
 US 190 in Lacombe I-12 (Exit 74) north of Lacombe |
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| North end: |  LA 36 in St. Tammany |
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| Highway system | ||||
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→Louisiana Highway 434 (LA 434) is a state highway in Louisiana that serves St. Tammany Parish. It spans 10.79 miles (17.36 km) in a south to north direction. South of US 190, it is known as Lake Road.
[edit] Route description
From the south, Lake Road literally begins at Lake Pontchartrain. The state maintained portion which is designated as LA 434 begins about two miles (3 km) from the lake near the intersection of Barringer Road and Lake Road. LA 434 continues northward to a junction in Lacombe with US 190 and LA 1093-1. At this point, it turns northeastward onto US 190 and the roadways overlap as they cross Bayou Lacombe together. Shortly thereafter, LA 434 turns northward and eventually intersects I-12 at a diamond interchange (Exit 74). It continues northward through the community of St. Tammany to a terminus at LA 36.
LA 434 is an undivided, two-lane highway for its entire length.
[edit] Junction list
| Parish | Location | Mile | Junction | Notes | |
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| St. Tammany | Lacombe | Southern terminus of  LA 434 |
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| 0.00 | Begin State Maintenance on Lake Road at Barringer Road | ||||
| 1.7 | US 190 LA 1093-1 (Davis Avenue or Fish Hatchery Road) |
US 190 departs to the west Southern terminus of LA 1093-1 |
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| Begin concurrency |
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| 2.0 | US 190 |
US 190 departs to the east | |||
| End concurrency |
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| 4.7 | I-12 |
Exit 74/Diamond Interchange | |||
| St. Tammany | 10.79 | LA 36 |
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| Northern terminus of LA 434 |
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