Interstate 510 Louisiana

North End
South End


I-510 - New Orleans East Map
Interstate 510 provides a high speed route to St. Bernard Parish from Interstate 10 in conjunction with Louisiana 47 (Paris Road).

Cosigned with Louisiana 47, Interstate 510 constitutes a freeway spur linking I-10 with Chalmette and St. Bernard Parish. The three-mile route serves areas of New Orleans East, the Almonaster-Michoud Industrial District and NASA’s Michoud Assembly Facility.

Louisiana 47 extends south from I-510 at Almonaster Avenue across the Chalmette Bridge spanning the Intracoastal Waterway. This bridge is below Interstate standards, but was previously included in the 2003 Louisiana Statewide Transportation Plan Update under Item LSTP-029. The megaproject outlined expansion of the bridge due to traffic demand.1

Route Information

  • North End – New Orleans, LA

  • South End – New Orleans, LA

  • Mileage – 3.04

  • Cities – New Orleans

  • JunctionsI-10

Source: December 31, 2017 Interstate Route Log and Finders List

I-510 Annual Average Daily Traffic (AADT)

Location Vehicles per day
Exits 1 to 2A 31,542
Exits 2B to 2C 30,148
Milemarkers with the route shield were installed in Louisiana starting in 2011. Photo taken 04/20/12.


Work to upgrade Paris Road (Louisiana 47) to Interstate 510 commenced in 1985. The 2.7-mile project cost $82-million project and was constructed in several phases. The northbound lanes of the freeway were completed in October 1992. A ribbon cutting ceremony took place ahead of the southbound lane opening on November 13, 1992.2

Planning for Interstate 510 began in 1970 as a replacement for the congested two-lane Paris Road. AASHTO approved the future Interstate on July 6, 1977. Environmentalist protests however delayed work, with the environmental impact statement (EIS) not completed until 1981. The first aspect of work focused on widening of the northern approach of the Paris Road bridge. Next a four-lane surface road between the bridge and I-10 was built so that crews could dismantle existing Paris Road and commence construction on the new freeway. Work also focused on building of a four lane frontage road and new roadway linking I-510 with Almonaster Road.3

Extensions of Dwyer Road and Lake Forest Boulevard coincided with construction of the freeway mainline as the second to last phase of road work. This led to completion of Interstate 510 between Dwyer and Almonaster Roads and the construction of the U.S. 90 (Chef Menteur Highway) interchange. It was hoped that I-510 would spur work on the Florida Avenue freeway project to better join St. Bernard Parish with New Orleans.3

Cancelled Interstate 410

Interstate 510 and 310 in St. Charles Parish were previously incorporated into the proposed greater Interstate 410 outer belt for the New Orleans metropolitan area. This alignment appeared on official Louisiana state maps in the mid-1960s. The Interstate 410 plan was deferred and eventually reemerged as a megaproject included in the Louisiana Statewide Transportation Plan Update under the same project that would expand the Chalmette Bridge (LSTP-029).1

The outer belt connection was envisioned along with proposed freeways along Florida Avenue northeast of Downtown New Orleans and the Louisiana 3139 / Earhart Expressway Extension west to the New Orleans International Airport (MSY). The Florida Avenue freeway would have connected to I-10 and I-610 near their eastern meeting and continue east to Interstate 510. The extension of Interstate 510 would resurrect the old I-410 proposal and provide a third freeway connection to the west. Despite the inclusion in the Statewide Transportation Plan Update,1 plans for this freeway did not advance.

Highway Guides

North End I-10 LA 47 – Little Woods, New Orleans, Louisiana

Perspective from Interstate 510 & Louisiana 47 north
Interstate 510 & Louisiana 47 continue one mile north from the diamond interchange (Exit 1B) with Lake Forest Boulevard to meet Interstate 10 at Exit 1A. Photo taken 05/09/15.
A viaduct carries Interstate 510 & Louisiana 47 north between Lake Forest Boulevard and Interstate 10. An auxiliary lane accompanies the roadway between Exits 1B and 1A. Photo taken 05/09/15.
Interstate 10 travels 18 miles northeast from I-510 to Slidell and 15 miles and 12 miles southwest to Downtown New Orleans. Photo taken 05/09/15.
Exit 1A partitions from I-510 for both ramps to Interstate 10. Louisiana 47 continues northward along Paris Road to Hayne Boulevard west at the Little Woods neighborhood. Photo taken 05/09/15.
A multi level systems interchange joins I-10 and I-510 to the west of Michoud Boulevard and Bayou Sauvage National Wildlife Refuge. Photo taken by Jeff Royston (05/27/00).
Perspective from Louisiana 47 south
Louisiana 47 (Paris Road) leads south from Hayne Boulevard at Little Woods and transitions into Interstate 510 south at the unnumbered off-ramp to I-10 west. Photo taken 05/09/15.
Exit 1A loops onto Interstate 10 east to Slidell and the Mississippi Gulf Coast. I-510 & Louisiana 47 pass by the former Six Flags New Orleans theme park ahead of Lake Forest Boulevard. Photo taken 05/09/15.
Perspective from Interstate 10 west
Interstate 10 west passes under Michoud Boulevard 1.50 miles ahead of I-510 south & Louisiana 47 (Exits 246A/B). Photo taken 05/09/15.
Traffic from Michoud Boulevard merges onto I-10 west, 0.75 miles out from the cloverstack interchange with Interstate 510 south & Louisiana 47. Photo taken 05/09/15.
LADOTD recorded 70,738 vehicles per day (vpd) along I-10 leading west to Interstate 510 and LA 47 in 2016. Photo taken 05/09/15.
A single lane off-ramp carries all traffic to Interstate 510 south and Louisiana 47 at Exit 246. Original construction of I-510 replaced the diamond onterchange here with Paris Road. Photo taken 05/09/15.
Exit 246 separates for LA 47 (Paris Road) north to Little Woods and I-510/LA 47 south to the NASA Michoud Assembly Facility and Chalmette. Photo taken 05/09/15.
Perspective from Interstate 10 east
Interstate 510 south & Louisiana 47 join Interstate 10 east with Little Woods in New Orleans and the St. Bernard Parish seat of Chalmette from Exit 246A in three quarters of a mile. Photo taken 04/20/12.

Advancing toward I-510 south and LA 47 on I-10 through New Orleans East. Interstate 10 maintains at least six lanes throughout New Orleans and northeast to I-12 and I-59 at Slidell. Photo taken 04/20/12.

Separate ramps link I-10 east with I-510/LA 47 south to Chalmette and the Intracoastal Waterway bridge into St. Bernard Parish and LA 47 north along Paris Road. Photo taken 04/20/12.

South End LA 47 / Almonaster Boulevard – New Orleans East, Louisiana

Perspective from Interstate 510 & Louisiana 47 south
Interstate 510 concludes at a diamond interchange (Exit 2C) with Almonaster Boulevard. Louisiana 47 (Paris Road) extends another six miles southward across the Intracoastal Waterway to Chalmette in Saint Bernard Parish. Photo taken 05/09/15.
Perspective from Louisiana 47 north
The initial guide sign for Exit 2C along Interstate 510 north precedes the Intracoastal Waterway bridge along Louisiana 47 (Paris Road) northbound. Photo taken 06/09/10.
Louisiana 47 north crosses a 135 foot high steel arch bridge over the Intracoastal Waterway leading to the exchange (Exit 2C) with Almonaster Boulevard at Interstate 510. Photo taken by Steve Hanudel (08/15/05).
The Intracoastal Waterway bridge along Louisiana 47 (Paris Road) opened in 1967. Photo taken by Steve Hanudel (08/15/05).
Forthcoming Almonaster Boulevard connects I-510/LA 47 with Old Gentilly Road east to the NASA Michoud Assembly Facility and west to the New Orleans Business and Industrial District. Photo taken 04/20/12.
Interstate 510 commences at the base of the Intracoastal Waterway bridge as Exit 2C departs from LA 47 north. Photo taken by Steve Hanudel (08/15/05).


  2. “Edwards to Open I-510 Link.” The Times-Picayune (New Orleans, LA), November 14, 1992.
  3. “I-510 Link is Nearly Complete After 7 Years of Construction.” The Times-Picayune (New Orleans, LA), October 13, 1992.

Page updated February 8, 2019.