I-510 highlighted in red | ||||
| Route information | ||||
| Auxiliary route ofI-10 | ||||
| Maintained byLouisiana DOTD | ||||
| Length | 3.04 mi (4.89 km) | |||
| Existed | 1992[1]–present | |||
| NHS | Entire route | |||
| Major junctions | ||||
| South end | ||||
| Major intersections | ||||
| North end | ||||
| Location | ||||
| Country | United States | |||
| State | Louisiana | |||
| Parishes | Orleans | |||
| Highway system | ||||
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Interstate 510 (I-510) is a shortspur route ofI-10 within easternNew Orleans,Louisiana,United States. It runs south from I-10, intersects withU.S. Route 90, and ends at the Almonaster Boulevardinterchange, near theNASAMichoud Assembly Facility. From this point, the highway continues south over theGulf Intracoastal Waterway /Mississippi River Gulf Outlet on theGreen Bridge.
The Interstate spur route is a portion of Paris Road, aNew Orleans metropolitan area roadway stretching from theMississippi River toLake Pontchartrain dating back to the 19th century. The portion designated I-510 is entirely within theNinth Ward of New Orleans, though the area the highway runs through is locally known asNew Orleans East.

I-510runs concurrently withLouisiana Highway 47 (LA 47) for its entire routing. The spur serves the NASA facility, theSt. Bernard Parish seat ofChalmette (though the interstate portion ends a few miles north of the city, the highway continues as Paris Road), and the formerSix Flags New Orleans.
I-510 exits are numbered from the parent route to the remote terminus, as is normal for spur interstates.[2]
What would eventually become I-510 was originally proposed in 1970 as a replacement for Paris Road, but was subsequently delayed due to environmental concerns.[3] By 1981, an environmental impact statement was completed, and construction on the spur would commence in 1985.[3] The $87 million project saw its official ribbon-cutting on November 13, 1992.[1] I-510 was once planned as part of a longerI-410 that would have also incorporatedI-310 around the southern section of theNew Orleans metropolitan area.[4]
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The entire highway is inNew Orleans,Orleans Parish.
| mi | km | Exit | Destinations | Notes | |
|---|---|---|---|---|---|
| 3.04 | 4.89 | - | Southern terminus | ||
| 2.91 | 4.68 | 2C | Almonaster Boulevard,To Old Gentilly Road | ||
| 2.28 | 3.67 | 2A | Signed as exits 2B (east) and 2A (west) northbound | ||
| 1.15 | 1.85 | 1B | Lake Forest Boulevard | ||
| 0.00 | 0.00 | 1A | Southbound exit to I-10 west unsigned; I-10 exit 246A | ||
| - | Northern terminus; northbound exit and southbound entrance; I-10 exit 246B | ||||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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