Interstate510 (I-510) is a short spur route of I-10 within eastern New Orleans, Louisiana, United States. It runs south from I-10, intersects with U.S. Route 90, and ends at the Almonaster Boulevard interchange, near the NASA Michoud Assembly Facility. From this point, the highway continues south over the Gulf Intracoastal Waterway / Mississippi River Gulf Outlet on the Green Bridge.

The Interstate spur route is a portion of Paris Road, a New Orleans metropolitan area roadway stretching from the Mississippi River to Lake Pontchartrain dating back to the 19thcentury. The portion designated I-510 is entirely within the Ninth Ward of New Orleans, though the area the highway runs through is locally known as New Orleans East.

Route description

I-510 runs concurrently with Louisiana Highway 47 (LA47) for its entire routing. The spur serves the NASA facility, the St. Bernard Parish seat of Chalmette (though the interstate portion ends a few miles north of the city, the highway continues as Paris Road), and the former Six Flags New Orleans.

I-510 exits are numbered from the parent route to the remote terminus, as is normal for spur interstates.

History

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. By 1981, an environmental impact statement was completed, and construction on the spur would commence in 1985. The $87million project saw its official ribbon-cutting on November13, 1992. I-510 was once planned as part of a longer I-410 that would have also incorporated I-310 around the southern section of the New Orleans metropolitan area.

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