# List of bridges documented by the Historic American Engineering Record in Louisiana

This is a list of bridges documented by the Historic American Engineering Record in the U.S. state of Louisiana.

## Bridges

| Survey No. | Name (as assigned by HAER) | Status | Type | Built | Documented | Carries | Crosses | Location | Parish | Coordinates |
| LA-7 | Krotz Springs Bridge | Replaced | K-truss | 1934 | 1985 | US 190 | Atchafalaya River | Krotz Springs | St. Landry | 30°32′46″N 91°44′59″W﻿ / ﻿30.54611°N 91.74972°W﻿ / 30.54611; -91.74972﻿ (Krotz Springs Bridge) |
| LA-8 | Bayou Teche Bridge | Replaced | Swing span | 1932 | 1985 | LA 351 | Bayou Teche | Ruth | St. Martin | 30°14′13″N 91°52′41″W﻿ / ﻿30.23694°N 91.87806°W﻿ / 30.23694; -91.87806﻿ (Bayou Teche Bridge) |
| LA-13 | DeSiard Street Bridge | Replaced | Swing span | 1899 | 1997 | DeSiard Street | Ouachita River | Monroe | Ouachita | 32°30′01″N 92°07′11″W﻿ / ﻿32.50028°N 92.11972°W﻿ / 32.50028; -92.11972﻿ (DeSiard Street Bridge) |
| LA-17 | Huey P. Long Bridge | Extant | Cantilever | 1935 | 2005 | US 90 | Mississippi River | Jefferson | Jefferson | 29°56′39″N 90°10′08″W﻿ / ﻿29.94417°N 90.16889°W﻿ / 29.94417; -90.16889﻿ (Huey P. Long Bridge) |
| LA-18 | Long–Allen Bridge | Extant | K-truss | 1933 | 2000 | US 79 / US 80 | Red River | Shreveport | Caddo | 32°31′05″N 93°44′33″W﻿ / ﻿32.51806°N 93.74250°W﻿ / 32.51806; -93.74250﻿ (Long-Allen Bridge) |
| LA-20 | Ouachita River Bridge | Demolished | Parker truss | 1932 | 2009 | LA 2 | Ouachita River | Sterlington | Ouachita | 32°41′46″N 92°05′13″W﻿ / ﻿32.69611°N 92.08694°W﻿ / 32.69611; -92.08694﻿ (Ouachita River Bridge) |
| LA-21 | Lake Pontchartrain Causeway & Southern Toll Plaza Bridge | Extant | Trestle | 1956 | 2010 | Causeway Boulevard | Lake Pontchartrain | Metairie and Mandeville | Jefferson and St. Tammany | 30°11′59″N 90°07′22″W﻿ / ﻿30.19972°N 90.12278°W﻿ / 30.19972; -90.12278﻿ (Lake Pontchartrain Causeway & Southern Toll Plaza Bridge) |
| LA-27 | Missouri Pacific Railroad Bridge | Extant | Reinforced concrete girder | 1932 | 2016 | US 84 | Missouri Pacific Railroad | Tullos | LaSalle | 31°49′35″N 92°19′37″W﻿ / ﻿31.82639°N 92.32694°W﻿ / 31.82639; -92.32694﻿ (Missouri Pacific Railroad Bridge) |
| LA-28 | Clarke Bayou Bridge | Extant | Box culvert | 1926 | 2016 | US 79 / US 80 westbound | Clarke Bayou | Fillmore | Bossier | 32°34′04″N 93°29′08″W﻿ / ﻿32.56778°N 93.48556°W﻿ / 32.56778; -93.48556﻿ (Clarke Bayou Bridge) |
| LA-29 | Bayou Teche Bridge | Extant | Rolling lift (Scherzer) bascule | 1940 | 2016 | LA 86 (Bridge Street) | Bayou Teche | New Iberia | Iberia | 30°00′21″N 91°49′01″W﻿ / ﻿30.00583°N 91.81694°W﻿ / 30.00583; -91.81694﻿ (Bayou Teche Bridge) |
| LA-30 | Calcasieu River West Fork Bridge | Extant | Vertical-lift bridge | 1968 | 2016 | LA 378 | Calcasieu River west fork | Moss Bluff | Calcasieu | 30°17′49″N 93°14′56″W﻿ / ﻿30.29694°N 93.24889°W﻿ / 30.29694; -93.24889﻿ (Calcasieu River West Fork Bridge) |
| LA-31 | West Pearl River Bridge | Extant | Vertical-lift bridge | 1933 | 2016 | US 90 | West Pearl River | Slidell | St. Tammany | 30°13′52″N 89°40′07″W﻿ / ﻿30.23111°N 89.66861°W﻿ / 30.23111; -89.66861﻿ (West Pearl River Bridge) |
| LA-32 | Lockport Company Canal Bridge | Extant | Vertical-lift bridge | 1959 | 2016 | LA 1 (Crescent Avenue) | Lockport Company Canal | Lockport | Lafourche | 29°38′41″N 90°32′40″W﻿ / ﻿29.64472°N 90.54444°W﻿ / 29.64472; -90.54444﻿ (Lockport Company Canal Bridge) |
| LA-33 | Lower Grand River Bridge | Extant | Swing span | 1958 | 2016 | LA 997 | Lower Grand River | Plaquemine | Iberville | 30°04′09″N 91°17′08″W﻿ / ﻿30.06917°N 91.28556°W﻿ / 30.06917; -91.28556﻿ (Lower Grand River Bridge) |
| LA-34 | St. Martin Parish Road Bridge | Extant | Swing span | 1939 | 2016 | Parish Road 196 | Bayou La Rose | Butte La Rose | St. Martin | 30°16′55″N 91°44′08″W﻿ / ﻿30.28194°N 91.73556°W﻿ / 30.28194; -91.73556﻿ (St. Martin Parish Road Bridge) |
| LA-35 | Terrebonne Parish Road No. 004 Bridge | Extant | Swing span | 1959 | 2016 | Parish Road 111 | Bayou du Large | Theriot | Terrebonne | 29°24′35″N 90°47′11″W﻿ / ﻿29.40972°N 90.78639°W﻿ / 29.40972; -90.78639﻿ (Terrebonne Parish Road No. 004 Bridge) |
| LA-36 | Lacombe Bayou Bridge | Extant | Swing span | 1938 | 2016 | US 190 | Bayou Lacombe | Lacombe | St. Tammany | 30°18′50″N 89°56′08″W﻿ / ﻿30.31389°N 89.93556°W﻿ / 30.31389; -89.93556﻿ (Lacombe Bayou Bridge) |
| LA-37 | Bayou Teche at Charenton Bridge | Extant | Swing span | 1945 | 2016 | LA 324 | Bayou Teche | Charenton | St. Mary | 29°53′14″N 91°31′22″W﻿ / ﻿29.88722°N 91.52278°W﻿ / 29.88722; -91.52278﻿ (Bayou Teche at Charenton Bridge) |
| LA-38 | Pass Manchac Bridge | Extant | Steel rolled multi-beam | 1957 | 2016 | US 51 | Pass Manchac | Akers and Galva | Tangipahoa and St. John the Baptist | 30°17′08″N 90°24′04″W﻿ / ﻿30.28556°N 90.40111°W﻿ / 30.28556; -90.40111﻿ (Pass Manchac Bridge) |
| LA-39 | Missouri Pacific Railroad Bridge | Extant | Steel rolled multi-beam | 1938 | 2016 | US 165 | Missouri Pacific Railroad | Bonita | Morehouse | 32°53′12″N 91°43′17″W﻿ / ﻿32.88667°N 91.72139°W﻿ / 32.88667; -91.72139﻿ (Missouri Pacific Railroad Bridge) |
| LA-40 | Manchac Bayou Bridge | Extant | Warren truss | 1931 | 2016 | LA 73 | Bayou Manchac | Baton Rouge and Prairieville | East Baton Rouge and Ascension | 30°20′39″N 90°59′00″W﻿ / ﻿30.34417°N 90.98333°W﻿ / 30.34417; -90.98333﻿ (Manchac Bayou Bridge) |
| LA-41 | Miller's Bluff Bridge | Extant | Warren truss | 1955 | 2016 | LA 2 | Red River | Plain Dealing and Hosston | Bossier and Caddo | 32°53′34″N 93°49′13″W﻿ / ﻿32.89278°N 93.82028°W﻿ / 32.89278; -93.82028﻿ (Miller's Bluff Bridge) |
| LA-42 | Boeuf River Bridge | Extant | Parker truss | 1926 | 2016 | LA 132 | Boeuf River | Rayville | Richland | 32°18′05″N 91°56′29″W﻿ / ﻿32.30139°N 91.94139°W﻿ / 32.30139; -91.94139﻿ (Boeuf River Bridge) |
| LA-43 | Charenton Bridge | Extant | K-truss | 1941 | 2016 | LA 182 | Charenton Drainage and Navigation Canal | Baldwin | St. Mary | 29°49′31″N 91°32′17″W﻿ / ﻿29.82528°N 91.53806°W﻿ / 29.82528; -91.53806﻿ (Charenton Bridge) |
| LA-49 | Illinois Central Railroad, McComb Subdivision, Mainline Bridge 891.5 | Extant | Trestle | 1935 | 2018 | Canadian National Railway | Bonnet Carré Spillway | Norco and LaPlace | St. Charles and St. John the Baptist | 30°03′47″N 90°23′09″W﻿ / ﻿30.06306°N 90.38583°W﻿ / 30.06306; -90.38583﻿ (Illinois Central Railroad, McComb Subdivision, Mainline Bridge 891.5) |