I-510 highlighted in red
|Auxiliary route of I-10|
|Maintained by Louisiana DOTD|
|Length||3.04 mi (4.89 km)|
|South end||LA 47 in New Orleans|
|North end||I-10 / LA 47 in New Orleans|
Interstate 510 (I-510) is a short spur route of Interstate 10 within eastern New Orleans, Louisiana, United States. It runs south from Interstate 10, intersects with U.S. Highway 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 19th century. 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.
Interstate 510 is concurrent with Louisiana Highway 47 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.
Interstate 510 exits are numbered from the parent route to the remote terminus, as is normal for spur Interstates. 
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 $87 million project saw its official ribbon-cutting on November 13, 1992.  I-510 was once planned as part of a longer Interstate 410 that would have also incorporated Interstate 310 around the southern section of the New Orleans metropolitan area. 
|0.00||0.00||-||LA 47 north – Little Woods||Northern terminus; northbound exit and southbound entrance; I-10 exit 246B|
|1A||I-10 – New Orleans, Slidell||Southbound exit to I-10 west unsigned; I-10 exit 246A|
|1.15||1.85||1B||Lake Forest Boulevard|
|2.28||3.67||2A||US 90 ( Chef Menteur Highway)||Signed as 2A (west) and 2B (east) northbound|
|2.91||4.68||2C||Almonaster Boulevard, To Old Gentilly Road|
|3.04||4.89||-||LA 47||Southern terminus|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- Turni, Karen (November 14, 1992). "I-510 opening links St. Bernard, I-10". New Orleans Times-Picayune. p. B1.
- "Manual on Uniform Traffic Control Devices, 2009 Edition". FHWA. Retrieved 1 April 2011.
- Turni, Karen (October 13, 1992). "I-510 link is nearly complete after 7 years of construction". New Orleans Times-Picayune. p. A1.
- "Interstate 510". Kurumi.com. Retrieved 2011-09-19.