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
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
LA-13	DeSiard Street Bridge	Replaced	Swing span	1899	1997	DeSiard Street	Ouachita River	Monroe	Ouachita	32°30′01″N 92°07′11″W
LA-17	Huey P. Long Bridge	Extant	Cantilever	1935	2005	US 90	Mississippi River	Jefferson	Jefferson	29°56′39″N 90°10′08″W
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
LA-20	Ouachita River Bridge	Demolished	Parker truss	1932	2009	LA 2	Ouachita River	Sterlington	Ouachita	32°41′46″N 92°05′13″W
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
LA-42	Boeuf River Bridge	Extant	Parker truss	1926	2016	LA 132	Boeuf River	Rayville	Richland	32°18′05″N 91°56′29″W
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
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