U.S. Route 90 in Louisiana

U.S. Highway 90 marker

U.S. Highway 90
Route information
Maintained by Louisiana DOTD
Length 297.6 mi[1] (478.9 km)
Existed 1926–present
Major junctions
West end I-10 / US 90 at Texas state line east of Orange, TX
  I-10 / US 171 / I-210 in Lake Charles
US 165 in Iowa
US 167 in Lafayette
I-310 in Boutte

US 90 Bus. west of Westwego

I-10 / US 90 Bus. / US 61 in New Orleans
I-610 in New Orleans
US 11 in Eastern New Orleans
US 190 east of Slidell
East end US 90 at Mississippi state line west of Pearlington, MS
Location
Parishes Calcasieu, Jefferson Davis, Acadia, Lafayette, St. Martin, Iberia, St. Mary, Assumption, Terrebonne, Lafourche, St. Charles, Jefferson, Orleans, St. Tammany
Highway system
  • Louisiana Highway System
← LA 89LA 91 →

U.S. Highway 90 in Louisiana (US 90), one of the major east–west U.S. Highways in the Southern United States, runs through southern Louisiana for 297.6 miles (478.9 km), serving Lake Charles, Lafayette, New Iberia, Morgan City, and New Orleans.[1] Much of it west of Lafayette and east of New Orleans has been supplanted by Interstate 10 (I-10) for all but local traffic, but the section between Lafayette and New Orleans runs a good deal south of I-10.

The stretch between Lafayette and New Orleans is planned as a southern extension of Interstate 49 and is signed as "future corridor I-49". This part of the highway is important to the offshore petroleum industry, as it connects the cities of Lafayette and New Orleans to the port cities along the coast. Most of U. S. 90 from New Iberia to New Orleans, that has not already been improved to interstate grade, is mainly an expressway, excepting the towns traversed through, that can be easily upgraded to freeway standards. The freeway east of Morgan City, bypassing Houma to the north, was originally built as Louisiana Highway 3052; US 90 was shifted to it from its former alignment (now Louisiana Highway 182) once it was completed.

US 90 replaced almost all of the Louisiana section of the San Diego–St. Augustine Old Spanish Trail. It was also designated Louisiana Highway 2 until the 1955 renumbering. A long section of the old road, from Lafayette to northeast of Raceland, is now Louisiana Highway 182.

Route description

State line to Lafayette

U.S. Route 90 enters Louisiana at the Texas line over the Sabine River as part of Interstate 10 (I-10). Separating at exit 4 and running parallel on the north side of I-10 through Sulphur, before rejoining I-10 east of Westlake, crossing the Calcasieu River, and again splitting from I-10 at exit 31b (running on the south side of I- 10) going through Lake Charles as Fruge, West 4th, then East 4th, before leaving town. In Iowa U.S. 90 intersects with the southern terminus of U.S. Route 165 continuing east through Lacassine, Welsh, Roanoke, Jennings, and Mermentau. East of Mermentau U.S. 90 runs north of and parallel to a section of the Old Spanish Trail through Midland, Estherwood, and Crowley. In Crowley U.S. 90 makes a north then east jog, bringing it close and parallel to I-10, passing through Rayne, Duson, Scott, and then into Lafayette.

Lafayette to Raceland

From Lafayette, U.S. 90 traverses a south by southwest course to Patterson, where the highway takes a more easterly direction to New Orleans. The section east (south) of Broussard, beginning east of Captain Cade road[2] but west of Louisiana highway 88, to just west of Patterson, has been improved to interstate grade and completed in June 2011. These improvements include the completion of the overpasses at Coteau road (Louisiana Highway 88), Jefferson Island road (Louisiana highway 675), Center street (LA 14), Avery Island road (Louisiana highway 329), South Lewis street (Parish road 605), weeks Island road (Louisiana highway 83), Darnall road (Parish road 211), Patout road (Louisiana highway 85), and Canal street (Louisiana highway 671). This section ties into the already completed section that begins at Louisiana highway 318 and terminates at East Main street (Louisiana highway 182) just east of Calumet. West of Berwick U.S. 90 is listed as "interstate grade" with a 70 miles (110 km) per hour speed limit from (mile marker 174) to east of Raceland and an intersection with LA 1 (mile marker 215b), before reverting to a standard divided highway and continuing on a north/northeast direction to New Orleans.

New Orleans

U.S. 90 enters Jefferson Parish and, after passing Avondale, heads north at an intersection with the U.S. Highway 90 Business called the Westbank Expressway, through Bridge City, and across the Mississippi River over the Huey P. Long Bridge. Crossing the river U.S. 90, designated as S. Clearview Parkway, intersects with and runs east as the Jefferson Highway,[3] that was originally part of the "Interstate Trail" and the "Pine to Palm" highway, a 2,300-mile (3,700 km) north/south transcontinental U.S interstate highway running from New Orleans to Winnipeg, Manitoba, Canada[4] The highway terminus was at the corner of St. Charles avenue and Common street with a monument that was erected in 1916. The original highway was changed to follow U.S. 90 and Louisiana highway 48. After 1935 Jefferson became S. Claiborne Avenue at the Orleans Parish line and makes a sweeping south to north semi-circle weaving through New Orleans. As the highway swings north it intersects and runs under an elevated I-10, where it turns northwest along Tulane Avenue. The highway soon turns northeast along South Broad Avenue — North Broad Avenue after the intersection with Canal Street - then runs into a pair of regular individual streets (i.e., not a street that has a median - or "neutral ground" in the vernacular of New Orleans - separating half of the lanes from the other half) that are from the old street grid and thus parallel at about 120 yards from each other (named New Orleans Street & Allen Street) for about a quarter mile, crossing I-610 in this tiny span, and finally turning right (East) onto Gentilly Boulevard (which has a median), which eventually becomes Chef Menteur Highway (a mainly straight highway that replaced what is now called Old Gentilly Road), then crossing I-510, and then a few miles later, loses the median and meanders (i.e., in a manner similar to the way that Old Gentily meanders) until first reaching the southern terminus of U.S. 11, which leads to the Irish Bayou community, and then passing the Venetian Isles community (a subdivision in which homes have a canal in the backyard for easy access to the surrounding lakes), and finally becoming a 2 lane highway at the bridge over the Chef Menteur Pass to go past the Lake Catherine community until reaching the bridge over the Rigolets, after which U.S. 90 finally leaves the corporate limit of New Orleans, entering St. Tammany Parish.[5] The stretch in the Lake Catherine community is where Jayne Mansfield was killed in a car accident on her way to New Orleans from Mississippi.

In St. Tammany Parish, U.S. 90 then enters Slidell. After exiting Slidell it heads east and crosses the Mississippi state line at a drawbridge at the Pearl River.

  • The Jefferson Highway was the first north/south transcontinental highway in America, the second interstate highway, after the Lincoln Highway that it intersects in Colo, Iowa, but was the first international interstate highway in the world.[6]

Interstates 49 and 910

The Business U.S. 90 portion of the Pontchartrain Expressway is also designated as Interstate 910,[7] however it is not signed as such. This is a temporary designation that overlaps all freeway portions of Business U.S. 90 (the Pontchartrain Expressway, Crescent City Connection, and Westbank Expressway). When Interstate 49 is completed from Lafayette to New Orleans, Business U.S. 90/Interstate 910 will be resigned as Interstate 49.

History

The modern US 90 has its roots in an early 20th-century auto trail known as the Old Spanish Trail, which was designated as State Route 2 within Louisiana when the state first numbered its highway system in 1921. US 90 was applied to the route when the numbered U.S. Highway system was implemented in 1926. With minor exceptions, Route 2 generally remained co-signed with US 90 throughout the state until such overlapping between U.S. and state routes was eliminated in the 1955 Louisiana Highway renumbering. Prior to 1955, as US 90 was gradually relocated onto newer and improved alignments, Route 2 was often moved accordingly. Former alignments remaining in the state highway system were then designated as part of State Route 1092 with shorter pieces designated as Route 2-D, 2-E, and so on as needed.

  • In Calcasieu Parish, on the border with Orange, Texas, US 90 originally crossed the Sabine River eastward into East Orange, Louisiana, a town consisting primarily of gambling, showboats, and supper clubs. The bridge over the Sabine River was removed after US 90 had been rerouted northward in Orange onto Simmons Drive and Interstate 10.[8]
  • In Lake Charles, US 90 traveled from Westlake down present-day Mike Hooks Road to cross the Calcasieu River on a bridge built in 1916. The road then traveled along Shell Beach and Lakeshore Drives to continue eastward on Broad Street. This alignment changed with the completion of the Lake Charles I-10 Bridge in 1952.
  • In St. Charles Parish and Lafourche Parish, US 90 traveled down present-day LA 631, crossing the swing bridge still used by local traffic in Des Allemands.
  • In Lafourche Parish, The Old US 90 (Now LA 182) splits off from the current US 90/Future I-49 just northeast of Raceland. Further southwest it enters Raceland, intersecting with LA 308, then immediately afterwards crosses Bayou Lafourche over a lift bridge. The route then goes to the right, through the middle of Raceland coaligned with LA 1 for a few thousand feet. It then takes a turn to the southwest as Willow Street or The Old Houma Road, interchanging with US 90/Future I-49. Just south of this Interchange, it travels as four-lane highway, until the Junction with Prospect Blvd./LA 3087. Old Highway 90/LA 182 then heads to Bayou Blue and on to downtown Houma as a major two-lane highway. LA 653 was the US 90's original route but was supplanted in the 1950s by its current route, what is now LA 182, and most of this original road has been abandoned.
  • Jefferson Parish:
    • 1926-1928: The original alignment of U.S. 90 generally followed today's LA 18 through Jefferson Parish and crossed the Mississippi River into Orleans Parish (city of New Orleans) via the Jackson Avenue Ferry at Gretna. The exact routing was as follows:
      • LA 18 (River Road) from the St. Charles Parish line eastbound to Avondale.
      • The original road through the Avondale shipyards continued straight along the river levee and no longer exists.
      • LA 541 (continuation of River Road) and Bridge City Avenue through Bridge City.
      • LA 18 (Seven Oaks Boulevard, formerly Bridge City Avenue) to Westwego.
      • LA 541 (River Road), Sala Avenue, and LA 18 (Fourth Street) through Westwego.
      • LA 18 (Fourth Street, Barataria Boulevard, and continuation of Fourth Street) to Gretna.
      • Huey P. Long Avenue to the Gretna Ferry landing.
    • 1928-1930: U.S. 90 was re-routed over the Walnut Street Ferry in September 1928, shortening the route in Jefferson Parish to the former ferry landing at River Road and Sala Avenue in Westwego.
    • 1930-1937: U.S. 90 was restored to its original route through Jefferson Parish in May 1930, after widening and resurfacing of the Westwego-Gretna section was completed in April.
    • 1937-1941: The Huey P. Long Bridge was opened in December 1935. U.S. 90 was re-routed over the bridge, following Jefferson Highway into Orleans Parish, after widening of that thoroughfare to four lanes was completed in 1937. (LA 2 remained on the old alignment until the 1955 renumbering of Louisiana highways.)
    • 1941–present: The current alignment (the "Boutte Cutoff") west of the Huey P. Long Bridge was opened in April 1941, bypassing the winding river road. This alignment was widened to four lanes in 1953.
  • Orleans Parish (west of Peoples Avenue):
    • 1926-1928: U.S. 90 originally followed this route through New Orleans, starting from the Jackson Avenue Ferry landing:
      • Jackson Avenue and South Claiborne Avenue to downtown New Orleans.
      • Canal Street, North Broad Avenue, Bruxelles Street, and Gentilly Boulevard to Peoples Avenue.
      • The above route, though signed in the field, had several problems that were mostly alleviated by a re-routing in 1928:
        • The New Basin Canal bridge on South Claiborne Avenue had been closed in 1923 due to safety concerns. A temporary bridge was opened in July 1928, but it was a traffic bottleneck.
        • Bruxelles Street became a one-way street in 1926, forcing westbound traffic to follow the unpaved Paris and St. Bernard Avenues from Gentilly to Broad.
        • Jackson Avenue was also unpaved beyond St. Charles Avenue and did not connect directly to South Claiborne Avenue westbound.
        • The Jackson Avenue Ferry service was considered to be inferior to that of the Walnut Street Ferry which the Old Spanish Trail had followed for years.
    • 1928-1930: The route of U.S. 90 was revised above Canal Street in September 1928, utilizing a better ferry and avoiding the New Basin Canal bridge and railroad crossings on South Claiborne Avenue. From the Walnut Street Ferry landing, the revised route was as follows:
      • Walnut Street, St. Charles Avenue to Lee Circle, Howard Avenue, and Camp Street to Canal Street.
      • Because of one-way streets, westbound traffic followed Canal Street, St. Charles Avenue, and Audubon Street to the Walnut Street Ferry landing.
    • 1930-1931: In spite of protests, U.S. 90 was routed back over the Jackson Avenue Ferry in May 1930, following Jackson Avenue, St. Charles Avenue, Washington Avenue, and South Claiborne Avenue to Canal Street.
    • 1931-1937: After Jackson Avenue was paved between St. Charles Avenue and South Claiborne Avenue in October 1931, the Washington Avenue detour was eliminated. Paving of Paris and St. Bernard Avenues was completed in March 1932, but eastbound traffic still followed Bruxelles Street.
    • 1937-1939: After being re-routed over the Huey P. Long Bridge, U.S. 90 now entered Orleans Parish on South Claiborne Avenue, following South Carrollton Avenue and Canal Street to North Broad Avenue.
    • 1939-1946: U.S. 90 shortly began to follow South Claiborne Avenue directly to Canal Street.
    • 1946-1956: The Bruxelles Street link was finally eliminated. Eastbound traffic now followed St. Bernard and Paris Avenues from Broad to Gentilly. Westbound traffic followed St. Bernard Avenue only.
    • 1956-1975: U.S. 90 was re-routed over the North Broad Avenue extension and railroad underpass that had been opened in April 1952. Eastbound traffic was fed onto Allen Street to Gentilly Boulevard. Westbound traffic followed New Orleans Street from Gentilly Boulevard onto North Broad Avenue.
    • 1975–present: The final change in routing was the substitution of Tulane Avenue for Canal Street around 1975.
  • Orleans Parish (east of Peoples Avenue):
    • 1926-1929: Continuing from the intersection of Gentilly Boulevard and Peoples Avenue, the original route of U.S. 90 through eastern New Orleans was as follows:
      • Old Gentilly Road to the Industrial Canal. U.S. 90 crossed the canal over the L&N Railroad bridge (also known as the Almonaster Avenue Bridge), a combination railroad/vehicular bridge opened in 1919 now closed to vehicular traffic. The bridge was originally connected to Old Gentilly Road via two sharp right-angle turns on either side.
      • Continuation of Old Gentilly Road to Michoud.
      • U.S. 90 remains on its original alignment (Chef Menteur Highway) from Michoud to a point two miles west of the Chef Menteur Bridge, where the original road continued to the left along Bayou Sauvage. Portions of this road still exist as Old Chef Menteur Road and Fort Macomb Road.
      • U.S. 90 crossed the Chef Menteur Pass by ferry, then continued along the current alignment toward the Rigolets. About a third of the way to the Rigolets, a curve on the south side of the road has been bypassed.
      • At the approach to the Rigolets Bridge, U.S. 90 continued straight ahead on a road which no longer exists to the site of the Rigolets Ferry to St. Tammany Parish.
    • 1929-1930: The Chef Menteur Bridge was opened in September 1929, replacing the ferry service.
    • 1930-1932: The Rigolets Bridge (with new approach road) was opened in June 1930, followed shortly by the first section of Chef Menteur Highway between Downman Road and Lee Station. The route was now:
      • Old Gentilly Road to the Industrial Canal, with the dangerous bridge approaches smoothed out. The eastern approach now fed traffic onto the new Chef Menteur Highway.
      • Current U.S. 90 (Chef Menteur Highway) to Lee Station, curving back onto Old Gentilly Road just east of present-day Crowder Boulevard.
      • Old Gentilly Road to Michoud.
      • Current U.S. 90 (Chef Menteur Highway) and old approach (described above) to Chef Menteur Pass.
      • Current U.S. 90 (Chef Menteur Highway) across Chef Menteur and Rigolets bridges to St. Tammany Parish.
    • 1932-1934: The Peoples Avenue-Downman Road section of Chef Menteur Highway, including a new bridge over the Industrial Canal, was opened in 1932. The original Danziger Bridge existed on the north side of the current bridge.
    • 1934-1942: The permanent approach road to the Chef Menteur Bridge was finally opened, eliminating the road along Bayou Sauvage with right-angle turn onto the bridge.
    • 1942–present: The "Michoud Cutoff," the section of Chef Menteur Highway from Lee Station to Michoud, was opened in May 1942, completing the current alignment.
  • In St. Tammany Parish, US 90 originally took a much longer route toward Mississippi. After crossing the Rigolets, US 90 travelled along LA 433 (Old Spanish Trail) to Slidell, then US 11 (Front Street) to Pearl River, continuing onto LA 3081 (Main Street). The bridge across the West Pearl River no longer exists. The route continued onto Old US 11, crossing the site of current US 11/I-59. Old US 11 continues through the Pearl River State Wildlife Management Area to the Mississippi State Line, where a bridge once crossed over the Pearl River. This out-of-the-way alignment was bypassed around 1930 when the current alignment to Pearlington was constructed. US 11 was subsequently routed onto it.

Future

In Louisiana, current plans call for parts of U.S. 90 to be upgraded to interstate standards from Lafayette to just west of New Orleans and designated Interstate 49. The stretch of U.S. 90 to be upgraded to I-49 stretches from the West Bank Expressway (U.S. 90 Business near Westwego, Louisiana) to just north of downtown Lafayette, where U.S. 90 splits from U.S. Route 167 (the two highways converge in downtown Lafayette). The stretch of U.S. 167 from U.S. 90 to I-10 will also be upgraded and included as part of I-49. As of March 2008, due to a one billion dollar surplus in the Louisiana state budget, the legislature approved a bill which proposed capacity improvements on U.S. 90 in the Lafayette Area. U. S. 167/U.S. 90 is currently six-laned from I-10 in Lafayette to La 182 and La 96 in Broussard.

Major intersections

ParishLocationmi[1]kmExitDestinationsNotes
Calcasieu​0.00.0 I-10 / US 90 west – BeaumontWestern terminus at Texas–Louisiana state line
​0.0–
0.5		0.0–
0.80		Bridge over Sabine River
​0.60.971Sabine River TurnaroundEastbound entrance and westbound exit
Toomey4.0–
4.6		6.4–
7.4		4 I-10 east – Lake CharlesEast end of I-10 concurrency
4.87.7 LA 109 north – Starks
LA 3112 west		Southern terminus of LA 109; eastern terminus of LA 3112
Vinton8.413.5 LA 3063 (West Street) to I-10
Sulphur22.836.7 LA 27 (Beglis Parkway) – DeQuincy, Cameron
24.940.1 LA 108 south (North Cities Service Highway) to I-10Northeastern terminus of LA 108
​27.944.926 I-10 west – BeaumontWest end of I-10 concurrency; eastbound entrance and westbound exit
Westlake28.5–
28.9		45.9–
46.5		27 LA 378 (Sampson Street) – WestlakeSouthwestern terminus of LA 378
Westlake–Lake Charles line28.9–
30.1		46.5–
48.4		Bridge over Calcasieu River
Lake Charles30.448.929 LA 1262 – Downtown AreaEastbound exit and westbound entrance
31.049.930A LA 1262 (Lakeshore Drive)Northern terminus of LA 1262; eastbound entrance and westbound exit
31.3–
31.6		50.4–
50.9		30BRyan Street – Downtown AreaEastbound entrance and westbound exit
31.9–
32.4		51.3–
52.1		31A
US 90 Bus. east (Enterprise Boulevard)		Western terminus of US 90 Business
32.6–
32.8		52.5–
52.8		31B I-10 east – LafayetteEast end of I-10 concurrency
33.654.1 US 171 north (North Martin Luther King Highway) – DeRidder
LA 14 south (South Martin Luther King Highway) – Cameron		Southern terminus of US 171; western terminus of LA 14
34.455.4
US 90 Bus. west (Pamco Road)		Eastern terminus of US 90 Business
34.555.5 I-210 east – LafayetteExit 11 on I-210; eastbound entrance and exit (westbound via US 90 Business)
​36.759.1 LA 397 (East Ward Line Road) to I-10 – Creole, Cameron
​37.660.5 LA 3256 (Manchester Road) – ChloeWestern terminus of LA 3256
Iowa43.570.0 LA 383 north (South Thompson Avenue)Southern terminus of LA 383
44.471.5 US 165 north to I-10 – Kinder, AlexandriaSouthern terminus of US 165
Jefferson DavisLacassine48.678.2 LA 101 – Hayes
​51.783.2 LA 1131Northern terminus of LA 1131
Welsh55.088.5 LA 99 north (South Adams Street) – Pine IslandWest end of LA 99 concurrency
55.389.0 LA 99 south (South Simmons Street) – Thornwell, Lake ArthurEast end of LA 99 concurrency
​57.893.0 LA 382 – ThornwellNorthern terminus of LA 382
Roanoke59.595.8 LA 395 north – EltonSouthern terminus of LA 395
Jennings64.5103.8 LA 26 north (Elton Road) to I-10 – Elton
LA 26 south (North Lake Arthur Avenue) – Lake Arthur
65.0104.6 LA 97 / LA 102 north (North Cutting Avenue) to I-10 – Evangeline, LafayetteWest end of LA 102 concurrency; southern terminus of LA 97
65.9106.1 LA 102 south (South Cutting Avenue)
LA 3055 west (East Railroad Avenue) – Lake Arthur		East end of LA 102 concurrency; eastern terminus of LA 3055
​68.6110.4 LA 1126Eastern terminus of LA 1126
Jefferson Davis–Acadia
parish line		Mermentau70.4113.3Bridge over Mermentau River
Acadia​71.7115.4 LA 92 south (Mermentau Cove Road)Northwestern terminus of LA 92
Midland75.8122.0 LA 91 south (South Crocker Street) – Morse, GueydanWest end of LA 91 concurrency
Estherwood77.9125.4 LA 91 north (North Canal Street) – IotaEast end of LA 91 concurrency
78.1125.7 LA 1124 south (South Leblanc Road) – Morse, Kaplan
Crowley84.1135.3 LA 13 north (North Parkerson Avenue) – EuniceWest end of LA 13 concurrency
84.6136.2 LA 13 south (North Eastern Avenue) – Kaplan

LA 13 Truck		East end of LA 13 concurrency; west end of LA 13 Truck concurrency; southern terminus of LA 13 Truck
85.8138.1
LA 13 Truck north / LA 1111 Spur (Tower Road) to I-10 – Eunice		East end of LA 13 Truck concurrency; southwestern terminus of LA 1111 Spur
86.0138.4
LA 1111 Spur (Odd Fellows Road) to I-10 – Eunice		Northeastern terminus of LA 1111 Spur
Rayne91.4147.1 LA 35 south (Abbeville Highway) – Kaplan, AbbevilleWest end of LA 35 concurrency
92.0148.1 LA 35 north (North Adams Avenue) to I-10 – OpelousasEast end of LA 35 concurrency
Acadia–Lafayette
parish line		Duson95.5153.7 LA 719 (South Riceland Road)Northern terminus of LA 719
Lafayette96.5155.3 LA 95 north (Austria Road) to I-10 – Church PointSouthern terminus of LA 95
97.5156.9 LA 343 (South Richfield Road) – Ridge, Maurice
Sadou99.5160.1 LA 724 (South Fieldspan Road) – Judice
Scott101.7163.7 LA 93 / LA 3168 north (Apollo Road) – Cankton, SunsetWest end of LA 93 concurrency
102.9165.6 LA 93 south (Westgate Road) – Maurice, AbbevilleEast end of LA 93 concurrency
Lafayette104.4168.0 LA 3184 (Ambassador Caffery Parkway) to I-10
105.0169.0 LA 3025 (North Bertrand Drive)Northern terminus of LA 3025
106.2170.9 LA 182 north (North University Avenue) to I-10 / I-49 – Opelousas

US 90 Bus. east / LA 182 south (North University Avenue)		Western terminus of US 90 Business
107.4172.8 US 167 north (NW/NE Evangeline Thruway) to I-10 / I-49 – OpelousasWest end of US 167 concurrency
107.7173.3 LA 176 (Jefferson Boulevard)Southern terminus of LA 176
108.0173.8 US 167 south (Johnston Street) – Abbeville
LA 94 / LA 3138 (Louisiana Avenue) – Breaux Bridge		East end of US 167 concurrency; western terminus of LA 94 and LA 3138
108.6174.8
US 90 Bus. west (East Pinhook Road)		Eastern terminus of US 90 Business
109.4176.1 LA 729 (General Mouton Avenue)Southeastern terminus of LA 729
110.1177.2 LA 728-2Southern terminus of LA 728-2
112.2180.6 LA 89-1 south (Southpark Road) – YoungsvilleNorthern terminus of LA 89-1
Broussard113.1182.0 LA 731 (West 2nd Street)Northern terminus of LA 731
115.5–
115.8		185.9–
186.4		 LA 182 (East Main Street) to LA 96 – Cade, St. MartinvilleInterchange
116.9188.1 LA 3073 (Ambassador Caffery Parkway, Corne Road)
118.0189.9 LA 92-1 west (Young Street) – YoungsvilleWest end of LA 92-1 concurrency
St. Martin118.5190.7 LA 92-1 east (Smede Highway) – Cade, St. MartinvilleEast end of LA 92-1 concurrency
Iberia​120.6194.1 PR 502 (Captain Cade Road)West end of freeway
​121.4–
121.9		195.4–
196.2		 LA 88 (Coteau Road)
​125.9–
126.4		202.6–
203.4		126 LA 675 (Jefferson Island Road) – New IberiaWestern terminus of LA 675
New Iberia127.8–
128.3		205.7–
206.5		128A LA 14 (Center Street) – Avery Island, AbbevilleTo Palmetto Island State Park and Lake Fausse Pointe State Park
129.0207.6128B LA 329 (Avery Island Road) – New Iberia, Avery IslandEastbound entrance and westbound exit
​129.6–
130.2		208.6–
209.5		129 PR 605 (South Lewis Street) – Port of Iberia
​130.6–
131.2		210.2–
211.1		130 LA 83 (Weeks Island Road)
​133.9–
134.4		215.5–
216.3		 PR 211 (Darnall Road)To Cypremort Point State Park
​136.9–
137.5		220.3–
221.3		 LA 85 (Patout Road) – Jeanerette, Patoutville
​139.1223.9 PR 801 (Hubertville Road)
​140.3–
140.8		225.8–
226.6		 LA 668 (Canal Street) – JeaneretteInterchange
St. Mary​144.0231.7 LA 318 – Sorrel, Weeks IslandInterchange Opened on April 27th, 2018;http://www.katc.com/story/38063378/part-of-the-i-49-expansion-complete
Baldwin148.2–
148.5		238.5–
239.0		 LA 83 – Baldwin, Louisa
Franklin151.7–
152.3		244.1–
245.1		 LA 3211 north (Northwest Boulevard) – FranklinSouthern terminus of LA 3211
​157.5–
157.8		253.5–
254.0		 LA 3215 – Garden CitySouthern terminus of LA 3215
Bayou Sale159.0–
159.6		255.9–
256.9		 LA 317 – Centerville, Burns Point
​163.4263.0 LA 182 west (East Main Street)East end of freeway; west end of LA 182 concurrency
​164.1–
164.3		264.1–
264.4		Bridge over Wax Lake Outlet
Calumet164.8265.2 LA 182 eastEast end of LA 182 concurrency
Bayou Vista169.4272.6To LA 182 (Main Street) – Patterson, Bayou VistaUnmarked connection between US 90 and LA 182 within state right-of-way
169.7273.1To LA 182 (Main Street) – Patterson, Bayou VistaUnmarked connection between US 90 and LA 182 within state right-of-way
Berwick173.3–
173.9		278.9–
279.9		 LA 182 – BerwickInterchange; west end of freeway
Berwick–Morgan City line173.6–
174.7		279.4–
281.2		Bridge over Lower Atchafalaya River/Berwick Bay
Morgan City174.7281.2Federal AvenueEastbound exit and westbound entrance
175.0–
175.5		281.6–
282.4
US 90 Bus. / LA 182 east
LA 70 (9th Street)
LA 182 west (Brashear Avenue) – Morgan City		Western terminus of US 90 Business and LA 70
176.1–
176.6		283.4–
284.2		176Dr. Martin Luther King, Jr. Boulevard
Amelia181.1–
181.7		291.5–
292.4		181 PR 4 (Lake Palourde Bypass Road) – Amelia
St. Mary–Assumption
parish line		181.4–
182.7		291.9–
294.0		Bridge over Bayou Boeuf
Assumption​182.4–
182.9		293.5–
294.3		182 LA 662 – Boeuf

US 90 Bus. west		Eastern terminus of US 90 Business (unsigned on US 90)
Terrebonne​185.1–
185.8		297.9–
299.0		185 LA 662 to LA 182
Gibson189.4–
190.4		304.8–
306.4		189 LA 20 – Gibson
Chacahoula194.6–
195.0		313.2–
313.8		194 LA 20 – Chacahoula, Thibodaux
​200.2–
200.4		322.2–
322.5		200 LA 311
​201.8–
202.5		324.8–
325.9		202 LA 24 – Thibodaux, Houma
Terrebonne–Lafourche
parish line		​203.8–
204.6		328.0–
329.3		204 LA 316 (Bayou Blue Road) – Gray, Bayou Blue
Lafourche​210.9–
211.2		339.4–
339.9		210 LA 182 – Raceland, Houma
Raceland215.0–
215.3		346.0–
346.5		215A LA 1 – Raceland, LockportSigned as Exit 215 eastbound
215.7347.1215B LA 308 – RacelandEast end of freeway; eastbound entrance and westbound exit
​219.2–
219.4		352.8–
353.1		 LA 182 – RacelandSoutheastern terminus of LA 182
​225.3362.6 LA 631Western terminus of LA 631
Lafourche–St. Charles
parish line		Des Allemands225.4–
225.9		362.7–
363.6		Bridge over Bayou Des Allemands
St. Charles226.4364.4 LA 632 (Levee Road, WPA Road)
226.5–
226.7		364.5–
364.8
LA 631 Spur (Old US 90) – Des Allemands Business District		Eastern terminus of LA 631 Spur (signed as LA 631)
​228.8368.2 LA 635Eastern terminus of LA 635
Paradis230.3370.6 LA 306 – Bayou Gauche
Boutte232.8–
233.7		374.7–
376.1		 I-310 / LA 3127 north – Donaldsonville, New OrleansSouthern terminus of I-310 and LA 3127
234.0376.6 LA 52 (Paul Maillard Road) – Luling
LA 633 (Magnolia Ridge Road)		Southern terminus of LA 52; northern terminus of LA 633
Luling236.7380.9 LA 3060 (Barton Avenue)Southern terminus of LA 3060
Jefferson​246.6–
246.9		396.9–
397.3
US 90 Bus. east (West Bank Expressway) – Gretna		Interchange; western terminus of US 90 Business
​247.5398.3 LA 18 west (River Road) – AvondaleWest end of LA 18 concurrency
Bridge City248.3399.6 LA 18 east (Seven Oaks Boulevard) – Bridge City, WestwegoInterchange; east end of LA 18 concurrency
​248.4–
250.3		399.8–
402.8		Huey P. Long Bridge over Mississippi River
Elmwood250.3402.8 LA 48 west (Jefferson Highway)
LA 3152 north (South Clearview Parkway)		Interchange; eastern terminus of LA 48; southern terminus of LA 3152
Jefferson251.6404.9 LA 611-3 (Shrewsbury Road)Northern terminus of LA 611-3
251.9405.4 LA 3046 north (Causeway Boulevard)Partial interchange; southern terminus of LA 3046
252.4406.2Deckbar Avenue to LA 3139 south (Earhart Expressway)
OrleansNew Orleans257.2–
257.9		413.9–
415.0		 I-10 west (Pontchartrain Expressway) – Baton Rouge
I-10 east – Slidell

US 90 Bus. west (Pontchartrain Expressway) – Mississippi River Bridge
Poydras Street – Superdome		Exit 234C (westbound) and 234A (eastbound) on I-10; US 90 to I-10 west via US 90 Business east
Exit 13A and 13B on US 90 Business;
US 90 east to US 90 Business west via South Claiborne Avenue service roads and Earhart Boulevard
Poydras Street eastbound exit and westbound entrance only
258.8416.5 US 61 north (Tulane Avenue)Southern terminus of US 61
261.3420.5 I-610 east – SlidellExit 2B on I-610; eastbound entrance and westbound exit
262.0421.6 LA 3021 south (Elysian Fields Avenue)Northern terminus of LA 3021
263.7–
264.1		424.4–
425.0		France RoadInterchange
263.8–
264.5		424.5–
425.7		Danziger Bridge over Industrial Canal
264.5425.7Downman Road to I-10 west – Baton RougeEastbound exit and westbound entrance
264.9–
265.1		426.3–
426.6		 I-10 – Baton Rouge, SlidellExit 240B on I-10
269.3–
269.8		433.4–
434.2		 I-510 / LA 47 (Paris Road) – Slidell, ChalmetteExit 2A (southbound) and 2B (northbound) on I-510
275.5443.4 US 11 north to I-10 – Irish BayouSouthern terminus of US 11
279.2–
279.5		449.3–
449.8		Bridge over Chef Menteur Pass
Orleans–St. Tammany
parish line		288.0–
289.0		463.5–
465.1		Bridge over the Rigolets
St. Tammany​289.3465.6 LA 433 north (Old Spanish Trail) to I-10Southern terminus of LA 433
​293.7472.7 US 190 west to I-10 – SlidellEastern terminus of US 190
​294.2–
297.6		473.5–
478.9		Five bridges over Pearl River system
​297.6478.9 US 90 east – Bay St. LouisEastern terminus; continuation into Mississippi
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. 1 2 3 Google (April 29, 2013). "Overview Map of US 90 in Louisiana" (Map). Google Maps. Google. Retrieved April 29, 2013.
  2. ↑ mapquest; retrieved 2011-07-08
  3. ↑ Jefferson Highway history
  4. ↑ - Jefferson Highway: Printed 1995-10-22; Globe Gazette, Retrieved 2011-07-09
  5. ↑
  6. ↑ First international highway; Retrieved 2011-07-08
  7. ↑ - Interstate 910
  8. ↑ Jackson, Ron (2005). "TexasFreeway.com". Historic US 90 - Abandoned Road to East Orange, Louisiana. Retrieved 10 January 2010.

Route map:

KML is from Wikidata
U.S. Route 90
Previous state:
Texas		 Louisiana Next state:
Mississippi
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