Interstate 510 (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.

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 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.

[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.