{{short description|Highway in Louisiana}} {{For|the canceled Interstate in Phoenix, Arizona|Arizona State Route 51}} {{Use American English|date=April 2025}} {{Use mdy dates|date=January 2025}} {{Infobox road |state=LA |type=I |route=510 |map={{maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|frame-height=250|frame-lat=30.039|frame-long=-89.938|zoom=12|type=line|raw={{Wikipedia:Map data/Wikipedia KML/Interstate 510}}}} |map_custom=yes |map_notes=I-510 highlighted in red |length_mi=3.04 |established=1992<ref name="November 14, 1992">{{cite news |first = Karen |last = Turni |title = I-510 opening links St. Bernard, I-10 |publisher = New Orleans Times-Picayune |page = B1 |date = November 14, 1992 }}</ref> |spur_type=I |spur_of=10 |direction_a=South |terminus_a={{Jct|state=LA|LA|47}} in New Orleans |junction={{jct|state=LA|US|90}} in New Orleans |direction_b=North |terminus_b={{Jct|state=LA|I|10|LA|47}} in New Orleans |parishes=Orleans |previous_type=LA |previous_route=509 |next_type=LA |next_route=510 }}

'''Interstate&nbsp;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&nbsp;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&nbsp;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.

==Route description== thumb|left|Northern terminus from I-10 eastbound. I-510 runs concurrently with Louisiana Highway&nbsp;47 (LA&nbsp;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.

I-510 exits are numbered from the parent route to the remote terminus, as is normal for spur interstates.<ref>{{cite web |title = Manual on Uniform Traffic Control Devices, 2009 Edition |url = https://mutcd.fhwa.dot.gov/htm/2009/part2/part2e.htm |publisher = FHWA |access-date = 1 April 2011 }}</ref>

==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.<ref name="October 13, 1992">{{cite news |first = Karen |last = Turni |title = I-510 link is nearly complete after 7 years of construction |publisher = New Orleans Times-Picayune |page = A1 |date = October 13, 1992 }}</ref> By 1981, an environmental impact statement was completed, and construction on the spur would commence in 1985.<ref name="October 13, 1992"/> The $87&nbsp;million project saw its official ribbon-cutting on November&nbsp;13, 1992.<ref name="November 14, 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.<ref>{{cite web |first= Richard F. |last= Weingroff |date= November 18, 2015 |url= https://www.fhwa.dot.gov/infrastructure/neworleans.cfm |title=The Battles of New Orleans: Vieux Carré Riverfront Expressway (I-310) |work= Highway History |publisher= Federal Highway Administration |access-date= February 9, 2016}}</ref>

==Exit list== {{Unreferenced section|date=November 2023}} {{LAinttop|exit|Parish|parish=Orleans|location=New Orleans}} {{LAint|exit |type=concur |mile=3.04 |exit=- |road={{jct|state=LA|LA|47|dir1=south}} |notes=Southern terminus }} {{LAint|exit |mile=2.91 |exit=2C |road=Almonaster Boulevard, {{scaps|To}} Old Gentilly Road }} {{LAint|exit |mile=2.28 |exit=2A |road={{jct|state=LA|US|90|name1=Chef Menteur Highway}} |notes=Signed as exits 2B (east) and 2A (west) northbound }} {{LAint|exit |mile=1.15 |exit=1B |road=Lake Forest Boulevard }} {{LAint|exit |mile=0.00 |mspan=2 |exit=1A |road={{jct|state=LA|I|10|city1=New Orleans|city2=Slidell}} |notes=Southbound exit to I-10 west unsigned; I-10 exit 246A }} {{LAint|exit |mile=none |type=concur |exit=- |road={{jct|state=LA|LA|47|dir1=north|city1=Little Woods}} |notes=Northern terminus; northbound exit and southbound entrance; I-10 exit 246B }} {{Jctbtm|keys=concur}}

==References== {{Reflist}}

==External links== {{AttachedKML|display=title,inline}}

{{3di|10}} {{NOLA Streets}}

{{DEFAULTSORT:I510}} 10-5 510 10-5 Category:Transportation in New Orleans