State Route 47, 48 and 49 in Louisiana

Louisiana State Route 47

Get started Chalmette
End New Orleans
Length 16 mi
Length 25 km
ChalmetteNew Orleans

State Route 47 or State Highway 47 (LA 47) is a state route in the U.S. state of Louisiana. The road forms a route on the east side of New Orleans, from Chalmette with a hook via I-510 through eastern New Orleans. LA 47 is 25 kilometers long.

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Travel directions

State Highway 47 begins in the Chalmette suburb of St. Bernard Parish on the east side of New Orleans. The road has 2×2 lanes and crosses the Intracoastal Waterway via the Green Bridge. Between Chalmette and eastern New Orleans, the road briefly passes through swampland. LA 47 thereafter coincides with Interstate 510 for the entire length between US 90 and Interstate 10.

One then reaches Lake Pontchartrain, where LA 47 abruptly turns west to form Hayne Boulevard, which runs directly past the flood wall. The road here forms a narrow four-lane road. LA 47 ends on Downman Road, just before the Seabrook Floodgate.

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The road was originally numbered LA 61 from 1921 and served as the connection between LA 1 and LA 2, two major New Orleans approach roads. That’s why it was an eastern bypass of New Orleans from the start. In the late 1920s, the road was actually built through the swamp north of Chalmette. In 1936 the entire road was asphalted. In 1955 the road was renumbered LA 47. The road was improved in the 1960s with the construction of the Paris Road Bridge over the Intracoastal Waterway. Also known as the ‘Green Bridge’, this bridge is a fairly large arch bridge over the waterway. In the 1970s, the section between Chalmette and the bridge was also widened to 2×2 lanes.

In 1992, Interstate 510 opened over the portion of LA 61 between US 90 and I-10. Both routes were double numbered from then on. The motorway was built directly over the old road. Under the Road Transfer Program was included to transfer Hayne Boulevard to the City of New Orleans, as this part of the road has no significance for through traffic.

Traffic intensities

Each day, 18,000 vehicles in Chalmette and 31,000 vehicles travel on the Intracoastal Waterway as far as I-510.

State Route 48 in Louisiana

Get started Norco
End Elmwood
Length 21 mi
Length 34 km
NorcoNew Sarpy





State Route 48 or State Highway 48 (LA 48) is a state route in the U.S. state of Louisiana. The road forms an east-west route over the Mississippi River bank between Norco and Elmwood, west of New Orleans. LA 48 is 21 miles long.

Travel directions

State Highway 48 begins in Norco on US 61 and leads on Apple Street to the Mississippi River. The road then heads east along the Mississippi embankment. The landscape here consists of an alternation of residential areas and large industrial complexes. In Destrehan there is a connection to Interstate 310. The road gradually enters the New Orleans metropolitan area and passes through the western suburbs on the Mississippi River. The road widens here with 2×2 lanes and leads through Harahan to US 90 in Elmwood.


The road originated in the early 20th century as part of the Jefferson Highway, an auto trail that was established in 1916. This was the first road link from New Orleans to the rest of the country. In 1921, the road was numbered LA 1, followed by US 61 in 1926. During the 1930s, the more modern Airline Highway was built between New Orleans and Baton Rouge and US 61 was disconnected from LA 1. As a result, the road no longer had any significance for through traffic in 1940.

The road was renumbered LA 48 in 1955. The road originally ran further west than Norco but was interrupted here by the Bonnet CarrĂ© Spillway, a high-water overflow from the Mississippi River to Lake Pontchartrain. In the 1960s and 1970s, the section in Jefferson Parish was widened to 2×2 lanes, following the suburbanization of this area. Elsewhere, the road has not been upgraded further.

Traffic intensities

Usually 5,000 to 7,000 vehicles drive daily through the section in St. Charles Parish between Norco and St. Rose. The part in Jefferson Parish is a bit busier because of the larger construction, with 20,000 to 33,000 vehicles per day.

State Route 49 in Louisiana

Get started expert
End expert
Length 4 mi
Length 6 km

State Route 49 or State Highway 49 (LA 49) is a state route in the U.S. state of Louisiana. The road forms a north-south route through Kenner, a western suburb of New Orleans. LA 49 is 6 kilometers long.

Travel directions

State Highway 49 is formed by Williams Boulevard, a 2×2 to 2×3 lane urban arterial through Kenner. The road begins south of Kenner on US 61 and has a junction-like connection to Interstate 10. State Highway 49 ends near the Pontchartrain Center, a sports arena near the shore of Lake Pontchartrain.


Renumbered LA 452 in 1921, it was changed to LA 1249 in 1930. The route had some significance at the time because it joined the Lake Shore Highway, which was built from New Orleans to Hammond, across the shore of the Lake. Lake Pontchartrain. However, the part in St. Charles Parish was never built, so the route had little significance. In 1955 the road was renumbered LA 49. In the 1960s the area was largely suburbanized. The road thus became an urban arterial, the westernmost major north-south urban highway of the New Orleans metropolitan area.

Traffic intensities

22,000 to 37,000 vehicles travel between US 61 and I-10 daily, peaking at 55,000 vehicles north of I-10.

State Route 49 in Louisiana