Louisiana Highway 18

Louisiana Highway 18 marker
Louisiana Highway 18
Route information
Maintained by Louisiana DOTD
Length79.7 mi[1] (128.3 km)
Existed1955 renumbering–present
Major junctions
West end LA 1 / LA 3089 in Donaldsonville
Major intersections LA 20 in North Vacherie

LA 3213 in Wallace
LA 640 in Edgard
I-310 in Luling
US 90 in Bridge City
LA 45 in Marrero

LA 3017 in Harvey
East end
 US 90 Bus. / Future I-49 / LA 23 in Gretna
Location
CountryUnited States
StateLouisiana
ParishesAscension, St. James, St. John the Baptist, St. Charles, Jefferson
Highway system
  • Louisiana State Highway System
← LA 17→ LA 19

Louisiana Highway 18 (LA 18) is a state highway that serves Ascension, St. James, St. John the Baptist, St. Charles, and Jefferson Parishes. Called the Great River Road, it runs from west to east, parallel to the west bank of the Mississippi River, running from Donaldsonville to Gretna. It spans a total of 79.7 miles (128.3 km).[1] In the more rural parts of LA 18's span, it is commonly referred to as River Road, but it becomes 4th Street once it enters Westwego.

  1. ^ a b Microsoft; Nokia. "Map of LA 18 and Auxiliary Route(s)" (Map). Bing Maps. Microsoft. Retrieved November 5, 2012.