Total Bridges
12,699
Public highway bridges in Louisiana
State profile · Above national median SD
Louisiana bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Louisiana — drawn straight from the FHWA National Bridge Inventory.
- 12,699
- Public bridges
- 36.2%
- Good condition
- 11.0%
- Poor condition
- 11.0%
- Structurally deficient
Good Condition
36.2%
4,603 bridges rated 7-9
-13.8pp vs 50% benchmark
Poor Condition
11.0%
1,397 bridges rated 0-4
Structurally Deficient
11.0%
1,397 bridges flagged for repair priority
4.0pp vs national avg 7.0%
Louisiana vs national bridge condition
Louisiana — Good condition share 36.2%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Louisiana — Structurally deficient share 36.7%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Louisiana (FHWA NBI)
Counties (64)
Acadia 282 Allen 178 Ascension 216 Assumption 68 Avoyelles 147 Beauregard 221 Bienville 190 Bossier 270 Caddo 682 Calcasieu 463 Caldwell 124 Cameron 58 Catahoula 70 Claiborne 148 Concordia 42 De Soto 201 East Baton Rouge 548 East Carroll 55 East Feliciana 133 Evangeline 156 Franklin 131 Grant 209 Iberia 143 Iberville 80 Jackson 163 Jefferson 379 Jefferson Davis 240 LaSalle 195 Lafayette 323 Lafourche 130 Lincoln 171 Livingston 253 Madison 104 Morehouse 136 Natchitoches 313 Orleans 382 Ouachita 337 Plaquemines 34 Pointe Coupee 50 Rapides 523 Red River 63 Richland 207 Sabine 195 St. Bernard 47 St. Charles 82 St. Helena 139 St. James 26 St. John the Baptist 40 St. Landry 317 St. Martin 116 St. Mary 124 St. Tammany 360 Tangipahoa 477 Tensas 52 Terrebonne 215 Union 121 Vermilion 261 Vernon 341 Washington 285 Webster 194 West Baton Rouge 73 West Carroll 88 West Feliciana 108 Winn 220
Louisiana vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Louisiana on the same metric.
42
Pennsylvania
10.50% top marginal rate
38
North Dakota
10.84% top marginal rate
22
Louisiana
11.00% top marginal rate
72
Puerto Rico
11.98% top marginal rate
23
Maine
13.23% top marginal rate
Bridges Needing Most Attention in Louisiana
Six lowest-condition bridges in Louisiana, ranked by composite NBI rating. Each is inspected at least every 24 months.
Layton Coco Xing
Structurally DeficientOver: BAYOU DES GLAISES
0.01 MI. EAST OF LA 451, Avoyelles, LA
Built 1986 Load: 0.9 t ADT: 40
LA1077
Structurally DeficientOver: BLACK BAYOU
1.1 M S OF LA 22, St. Tammany, LA
Built 1965 Load: 0.9 t ADT: 1,019
LA0308
Structurally DeficientOver: BAYOU LAFOURCHE
.01 MI NORTH OF LA 1, Lafourche, LA
Built 1970 Load: 1.0 t ADT: 5,198
Ebeneezer Tap Rd
PoorOver: JONES CREEK
0.65 Mi South of LA 500, LaSalle, LA
Built 1989 Load: 1.2 t ADT: 300
Anderson Rd
Structurally DeficientOver: HYDE BR.
2 MI S OF 1054 & 440, Tangipahoa, LA
Built 1960 Load: 1.2 t ADT: 25
Stubblefield Rd
PoorOver: BAYOU ROUGE
APPROX. 1 M. S. OF LA 361, Avoyelles, LA
Built 1975 Load: 2.3 t ADT: 40
All Bridges in Louisiana
US0165
FairOver: DRAIN
5.0 MI. N. OF LA 26, Allen, LA
Built 1931 Load: 21.4 t ADT: 11,886
N Marchand Ave
FairOver: NEW RIVER
GONZALES .2 MI WEST LA 44, Ascension, LA
Built 1996 Load: 21.4 t ADT: 10
LA0793
FairOver: LEATHERMAN CREEK
1.21 MI WEST OF LA 794, Bienville, LA
Built 1977 Load: 21.4 t ADT: 125
LA0537
FairOver: STILLHOUSE BAYOU
8.06 MI NORTH OF LA 2, Bossier, LA
Built 1976 Load: 21.4 t ADT: 67
Tucson Lane
FairOver: TUCSON LN TRBY BUCHAN B.
1 mile SE of La 525, Caddo, LA
Built 1984 Load: 21.4 t ADT: 39
Bea Lane
FairOver: TRIB. TO GILMER BAYOU
1.0 MI. SOUTH OF LA 511, Caddo, LA
Built 1997 Load: 21.4 t ADT: 38
GILBERT DRIVE
FairOver: PIERREMONT DITCH
0.5 MI. NORTH OF LA 511, Caddo, LA
Built 1984 Load: 21.4 t ADT: 100
Kendrick Rd
FairOver: TRIB.-BLACK BAYOU LAKE
0.2M WEST OF LA 1, Caddo, LA
Built 1992 Load: 21.4 t ADT: 38
Hosston Rodessa Rd
FairOver: HORSE CREEK
3.19 M SE OF LA 1, Caddo, LA
Built 1990 Load: 21.4 t ADT: 59
Thomas Rd
FairOver: TYSON BRANCH
0.6 MILES NORTH OF LA 168, Caddo, LA
Built 2000 Load: 21.4 t ADT: 57
US0079
FairOver: CREEK
5.0 MI NORTH OF LA 2, Claiborne, LA
Built 1936 Load: 21.4 t ADT: 5,728
Peairs Rd
FairOver: LITTLE SANDY CREEK
3.5 MI.E.LA64, LA410, East Baton Rouge, LA
Built 1965 Load: 21.4 t ADT: 1,149
Pamona St
FairOver: BONNABEL CANAL
O.01 MI.E.OF MELODY., Jefferson, LA
Built 1970 Load: 21.4 t
LA0342
FairOver: CREEK
0.2 MI EAST OF LA 719, Lafayette, LA
Built 1955 Load: 21.4 t ADT: 1,338
LA0001
FairOver: INTRACOASTAL CANL
.05 MI NORTH OF LA 24, Lafourche, LA
Built 1961 Load: 21.4 t ADT: 3,276
FRANCE ST
FairOver: FLORIDA AVE.
1.5 MI.S.OF US.I.10, Orleans, LA
Built 1960 Load: 21.4 t
LA0143
FairOver: CROSS BAYOU
5.9 MI NORTH OF LA 616, Ouachita, LA
Built 1952 Load: 21.4 t ADT: 3,674
LA3017
FairOver: BAYOU BARATARIA
3.9 MI WEST OF LA 23, Plaquemines, LA
Built 1971 Load: 21.4 t ADT: 22,518
LA0155
FairOver: BRUSHY CREEK
6.33MI EAST OF US 71, Red River, LA
Built 1972 Load: 21.4 t ADT: 1,130
LITTLE RD
FairOver: BIG CREEK
LOGMI 4.08 FR 1DE TO, Richland, LA
Built 1976 Load: 21.4 t ADT: 100
LA0483
FairOver: CREEK
3.58 MI. NORTH OF US 171, Sabine, LA
Built 1929 Load: 21.4 t ADT: 525
US0061
FairOver: BLIND RIVER
US0061, St. James, LA
Built 1954 Load: 21.4 t ADT: 8,171
US0190
FairOver: BAYOU TECHE
0.15 MI E of LA 742, St. Landry, LA
Built 1964 Load: 21.4 t ADT: 8,559
Bridge Rd
FairOver: LOWER ATCHAFALAYA RIVER
0.2 Mi. E. of LA 182, St. Mary, LA
Built 1990 Load: 21.4 t ADT: 610
Honey Island Swamp
FairOver: DUCK BAYOU
0.5M EAST OF I-59, St. Tammany, LA
Built 1982 Load: 21.4 t
ST LOUIS CANAL RD
FairOver: ST LOUIS CANAL
0166 LOG MI FROM IN, Terrebonne, LA
Built 1976 Load: 21.4 t ADT: 6,313
ST LOUIS CANAL RD
FairOver: ST LOUIS CANAL
2.3 MI N OF LA 3040, Terrebonne, LA
Built 1976 Load: 21.4 t ADT: 3,492
LA0010
FairOver: PUSHEPATAPPA
2.5 MILES EAST OF LA 21, Washington, LA
Built 1998 Load: 21.4 t ADT: 570
Yankee Springs
FairOver: Yankee Springs Creek
0.32 MI. EAST OF LA 1233, Winn, LA
Built 1965 Load: 21.4 t ADT: 166
Louis White Rd
FairOver: DRAINAGE BAYOU
1.2 MI SW DUTCHTOWN, Ascension, LA
Built 1989 Load: 21.5 t ADT: 10
Blood Bend Rd.
FairOver: Elm Bayou
0.90 Mi W of La 115, Evangeline, LA
Built 2005 Load: 21.5 t ADT: 26
RABB RD
FairOver: COLVIN CREEK
DOWNTOWN VIENNA, Lincoln, LA
Built 1975 Load: 21.5 t ADT: 114
JOE DEATS RD
FairOver: PEDDICOAT BAYOU
0.7 Mi. EAST of LA 841, Ouachita, LA
Built 2006 Load: 21.6 t ADT: 80
LA0016
FairOver: WRIGHTS CREEK
LA0016, St. Tammany, LA
Built 1968 Load: 21.6 t ADT: 1,388
LA0016
FairOver: HOLDENS CREEK
LA0016, St. Tammany, LA
Built 1968 Load: 21.6 t ADT: 1,388
LA1054
FairOver: BUNCH BRANCH
2.3 M NE OF LA 16, Tangipahoa, LA
Built 1955 Load: 21.6 t ADT: 1,257
SWEET LILY RD
FairOver: LITTLE CANE CREEK
1.8 MI. N. INT. 258, Union, LA
Built 1978 Load: 21.6 t ADT: 10
Lomire Rd
FairOver: Canal #5
0.7 Mi S of La 335, Vermilion, LA
Built 2004 Load: 21.6 t ADT: 150
CC BEL RD
FairOver: BLUE BAYOU
1.7 MI. W. OF POWELL RD, Allen, LA
Built 2001 Load: 21.7 t ADT: 1,148
Savoy Rd
FairOver: NEW RIVER
367 Ft N OF LA 429, Ascension, LA
Built 1975 Load: 21.7 t ADT: 50
LA0001
FairOver: CONCIENNE CANAL
LA0001, Assumption, LA
Built 1952 Load: 21.7 t ADT: 6,998
CRABAPPLE DRIVE
FairOver: LAMBERT PARK DITCH
1.1 MI. EAST OF US 171, Caddo, LA
Built 1983 Load: 21.7 t ADT: 8,132
STONER STREET
FairOver: LINE AVE
1.3 MI. WEST OF LA 1, Caddo, LA
Built 1960 Load: 21.7 t ADT: 10,120
Gamm Rd Ext
FairOver: GAMM RD EXT, SWIFT BAYOU
1.15 MI N OF SELF ROAD, Caddo, LA
Built 1980 Load: 21.7 t ADT: 78
LA0008
FairOver: LITTLE RIVER RELIEF
8.47 MI. NE OF US 165, Grant, LA
Built 1981 Load: 21.7 t ADT: 1,590
S. HUDSON AVE
FairOver: CREEK
0.65 MI S of LA 4, Jackson, LA
Built 1960 Load: 21.7 t ADT: 7,500
US0090-B
FairOver: RAMP BA-1
2.6 MI EAST OF LA 23, Jefferson, LA
Built 1984 Load: 21.7 t ADT: 15,955
US0080
FairOver: CREEK
4.2 MI EAST OF LA 33, Lincoln, LA
Built 1952 Load: 21.7 t ADT: 3,275
JOURDAN ROAD
FairOver: CITY STREET/RAILROAD
.15 MI S OF DOWNMAN ROAD, Orleans, LA
Built 1991 Load: 21.7 t ADT: 22,680
SWARTZ SCHOOL RD
FairOver: CONEY CREEK
0.3 MI. E. of LA 139, Ouachita, LA
Built 1979 Load: 21.7 t ADT: 1,330
Showing 2,201-2,250 of 12,699 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |