Interstate 10 travels 274 miles across the state of Louisiana from the Sabine River and Orange, Texas to Sulphur, Lake Charles, Lafayette, Baton Rouge, New Orleans, Slidell and an exit across the Pearl River into Hancock County, Mississippi. The freeway is part of a transcontinental route between Santa Monica, California and Jacksonville, Florida. Between Baton Rouge and Slidell, Interstate 10 leaves an east-west trajectory for a 108-mile arc southward to Laplace, Kenner, Metairie and New Orleans. Interstate 12 stays north of Lakes Maurepas and Pontchartrain to provide the through route for long distance travelers.

Across the state, Interstate 10 sees several lengthy stretches of elevated roadway including the Acadian Thruway through Livingston Parish, the ten-mile viaduct between Interstate 55 at Laplace and Kenner, and the 5.5-mile Twin Bridges over Lake Pontchartrain.

The High Rise bridge crests at a height of 114.8 feet above the Industrial Canal in New Orleans. The 1966-built span is part of a 6,715 foot long elevated section of I-10 between Louisa Street and Downman Road. Photo taken 05/09/15.

Construction dates derived from official LADOTD maps and the 1968 Gousha Louisiana map (u/c = under construction):

  • u/c in 1958 - Pontchartrain Expressway
  • completed by 1963 - LA 27 to split with US 90 in Lake Charles.
  • completed by 1963 - Jennings to Crowley
  • u/c in 1963 - LA 108 to LA 27
  • u/c in 1963 - Lake Charles / US 90 to Jennings
  • open in 1964 - Washington Street to College Drive in Baton Rouge.
  • open in 1965 - US 11 / Irish Bayou, Twin Bridges to Gause Boulevard
  • open in 1966 - Slidell to I-59 Exit 5
  • u/c in 1966 - LA 109 to LA 108
  • u/c in 1966 - Crowley to LA 182 / Lafayette
  • u/c in 1966 - Mississippi River Bridge (LA 1 to I-110)
  • u/c in 1966 - LA 49 to Causeway Boulevard
  • u/c in 1966 - LA 39 to Industrial Canal
  • u/c in 1966 - LA-47 to US 11
  • open in 1969 - LA-95 to Lafayette
  • open in 1969 - City of Kenner
  • open in 1970 - I-12/59 east to MS-607 (Exit 2)
  • u/c in 1970 - US 167 to Ramah
  • u/c in 1970 - LA 415 to LA 1
  • u/c in 1970 - LA 22 / Sorrento to LA-49
  • u/c in 1970 - Morrison Road to LA 47
  • u/c in 1973 - LA 77 to LA 415
  • u/c in 1973 - I-12 to I-55

Interstate 10 between Washington Street (Exit 156A) and Perkins Road (Exit 157A) in Baton Rouge was dedicated on September 18, 1964. A $4.38-million contract was fulfilled by Boh Brothers Construction Company, Inc. of New Orleans, with work commenced on September 24, 1962.2 Work continued through 1964 on the freeway east to College Drive (Exit 158) and 1965 to Interstate 12, and the first two miles of I-12 to U.S. 61 (Airline Highway).

A $24.3 million project began in the spring of 2006 to replace the aged concrete surface of Interstate 10 between Interstates 12 & 59 and the Twin Bridges through Slidell. The 6.65-mile project involved the rubblizing of the concrete road bed and the overlay of six inches of asphalt pavement. Completion occurred by November 2006.3

A $733-million project replaced the Hurricane Katrina damaged Twin Bridges over Lake Pontchartrain between June 2006 and September 2011. The new spans expanded the freeway from four to six overall lanes.

Interstate 10 Highway Guides

The Claiborne Avenue viaduct travels by the Superdome before splitting with U.S. 90 east and joining Interstate 10. Photo taken April 20, 2012.

One third of the traffic along Interstate 10 between Lafayette and the Atchafalaya Basin Bridge is comprised of freight traffic. A $300 million, two-phase project, partially funded by a $60 million federal grant aimed to improved freight corridors, addresses capacity issues along this stretch. Beginning in 2017, expansion during the two-year long, first phase will add two lanes to I-10, between Interstate 49 (Exit 103) and Breaux Bridge (Exit 109), and from Henderson (Exit 115) east to the Atchafalaya Basin Bridge. The second phase, scheduled to start in the 2018-19 fiscal year, will six lane the intervening segment. Additionally the 1960s-built roadway will be rebuilt and Exit 115 with LA 347 will be converted to a dumbbell interchange.

Interstate 10 scenes
A historical look at Causeway Boulevard northbound at the directional cloverleaf interchange with Interstate 10. The interchange between Causeway Boulevard and Interstate 10 at Metairie is one of the most congested within the New Orleans metropolitan area. Therefore $86.6-million in road work was undertaken in April 2009 to address weaving traffic concerns. This work combined all movements to Interstate 10 from Causeway Boulevard north into a single ramp. The loop ramp to I-10 west is still present, but it is now accessed from a flyover ramp to the southeast. Photo taken 06/10/06.
Oak Harbor Boulevard travels through the diamond interchange (Exit 261) with Interstate 10 between Eden Isles and Lakeshore. Photo taken 11/19/08.
Four lanes of Oak Harbor Boulevard lower from the I-10 underpass and reach the eastbound ramp to Interstates 12 and 59, Bay St. Louis and Gulfport, Mississippi. Photo taken 11/19/08.
Entering the diamond interchange with Interstate 10 along Oak Harbor Boulevard. This is the first of four Slidell interchanges for the east-west freeway. Photo taken 11/19/08.
Continuing west toward the westbound on-ramp to New Orleans along Oak Harbor Boulevard. Photo taken 11/19/08.
2 photos
2 photos
The westbound on-ramp to Interstate 10 joins the freeway ahead of the Twin Bridges across Lake Pontchartrain to New Orleans. Oak Harbor Boulevard curves northward ahead to Oak Harbor and west to U.S. 11 (Pontchartrain Drive). Photos taken 11/19/08.


  1. I0010 over INNER HARBOR /CITY STS, Orleans Parish, Louisiana,
  2. "Booklet for I-10 Dedication Ceremony." Baton Rouge Digital Archive, September 18, 1964.
  3. "State expects $24.3M twin span fix in November." New Orleans CityBusiness, June 28, 2006.
  4. "State begins widening part of I-10 to six lanes." Acadiana Advocate, The (Baton Rouge, LA), August 4, 2016.

Photo Credits:

06/10/06, 11/19/08 by AARoads

Connect with:
Interstate 49
Interstate 55
Interstate 59
U.S. 11
U.S. 61
U.S. 90

Page Updated 11-09-2016.