Louisiana Highway 3127

Louisiana Highway 3127 (LA 3127) is a state highway in Louisiana that serves Ascension, St. James, St. John the Baptist, and St. Charles Parishes. It spans 42.1 miles (67.8 km) in a northwest to southeast direction.[1] It parallels LA 18 along the west bank of the Mississippi River, providing a much shorter inland bypass of the River Road. It is bannered in all four cardinal directions depending upon the part of the route.

Louisiana Highway 3127 marker

Louisiana Highway 3127

Route information
Maintained by Louisiana DOTD
Length42.1 mi[1] (67.8 km)
Existedc. 1975–present
Major junctions
West end LA 70 east of Donaldsonville
Major intersections LA 20 in North Vacherie

LA 3213 in North Vacherie
LA 640 in Edgard

I-310 in Luling
East end I-310 / US 90 in Boutte
Location
CountryUnited States
StateLouisiana
ParishesAscension, St. James, St. John the Baptist, St. Charles
Highway system
  • Louisiana State Highway System
← LA 3126→ LA 3128

Route description

Throughout its length, LA 3127 was built to eventually accommodate four lanes of traffic, as the land throughout its routing has been cleared for this accommodation. From the northwest, LA 3127 begins at a junction with LA 70 east of Donaldsonville and immediately enters St. James Parish. Undivided, two lanes, and largely secluded for the first several miles, it heads eastward and intersects LA 3219 near the community of St. James. Near Vacherie, it intersects LA 20. Continuing eastward, the route crosses into St. John the Baptist Parish before a junction with LA 640 south of Edgard. As LA 3127 crosses into St. Charles Parish, the highway turns toward the southeast. Shortly afterward, it divides and expands to four lanes. Access to the river communities of Killona, Taft, and Hahnville as well as many chemical and industrial facilities are provided via junctions with LA 3141, LA 3142, and LA 3160, respectively.

The final 1.1 miles (1.8 km) of LA 3127 consist of a concurrency with I-310, beginning at Exit 10. Both highways end at signaled intersection/interchange with US 90 just west of Boutte. As US 90 is slated to be upgraded to interstate standards (as Interstate 49), there are plans to massively reconfigure both the interchanges.

An extension of LA 3213 (which crosses the Mississippi River via the Veterans Memorial Bridge) to connect with LA 3127 opened in June 2008. This junction is between LA 20 and LA 640.

Major intersections
ParishLocationmi[1]kmDestinationsNotes
Ascension​0.00.0 LA 70 – Donaldsonville, Mississippi River Bridge
St. James​12.520.1 LA 3219 – St. James, LaganSouthern terminus of LA 3219
North Vacherie18.429.6 LA 20 – Vacherie, Thibodaux
20.733.3
 LA 3213 north – Mississippi River Bridge, Gramercy		Southern terminus of LA 3213
St. John the BaptistEdgard28.746.2 LA 640 – ReserveSouthern terminus of LA 640
St. CharlesKillona32.852.8 LA 3141 (Mary Plantation Road) – KillonaSouthern terminus of LA 3141
35.557.1 LA 3142 – TaftSouthern terminus of LA 3142
Hahnville37.460.2 LA 3160 (Home Place) – HahnvilleSouthern terminus of LA 3160
Luling41.066.0
 I-310 north – New Orleans		North end of freeway and I-310 concurrency; Exit 10 (I-310)
Boutte42.167.8 US 90 – Boutte-New Orleans, HoumaSouthern terminus of I-310;
South end of freeway and I-310 concurrency (no exit number)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References
  1. Microsoft; Nokia (November 14, 2012). "Map of LA 3127" (Map). Bing Maps. Microsoft. Retrieved November 14, 2012.
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