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
COMPTON ROAD
FairOver: GUM GULLY
3.5 M S of LA 102, Jefferson Davis, LA
Built 1975 Load: 25.3 t ADT: 30
LA0016
FairOver: SLOUGH
0.8 M N OF LA 42, Livingston, LA
Built 1974 Load: 25.3 t ADT: 10,070
LA0590
FairOver: CREEK
1.43 MI EAST OF US 425, Morehouse, LA
Built 1970 Load: 25.3 t ADT: 805
LA0493
FairOver: CANE RIVER
1.95 MI. E OF INT LA1, Natchitoches, LA
Built 1949 Load: 25.3 t ADT: 294
General de Gaulle
FairOver: MAGELLAN CANAL
0.0MI.W.OF HOLIDAY D, Orleans, LA
Built 1958 Load: 25.3 t
WASHINGTON AVE.
FairOver: WASHINGTON AVE. CANAL
0.1M EAST OF CARROLTON AV, Orleans, LA
Built 1961 Load: 25.3 t ADT: 9,489
DEAN CHAPEL RD
FairOver: SOUTH TUPAWEK CREEK
0.25 MILES SOUTH OF LA 61, Ouachita, LA
Built 2011 Load: 25.3 t ADT: 3,100
VANDENBURG DR
FairOver: BAYOU RAPIDES
0.01 MI. NORTH OF LA 486, Rapides, LA
Built 1955 Load: 25.3 t ADT: 175
Park Ave
FairOver: Richards Gully
1.0 Mi. W. of La 13, St. Landry, LA
Built 1987 Load: 25.3 t ADT: 1,500
US0090
FairOver: VACHERIE CANAL
3.24 Mi W of LA 83, St. Mary, LA
Built 1978 Load: 25.3 t ADT: 10,080
LA0573
FairOver: YOUNG BAYOU
1.15 MI SOUTH OF LA 128, Tensas, LA
Built 1978 Load: 25.3 t ADT: 109
LA3147
FairOver: AMOCO PIPELINE
8.8 MI S. OF LA 82, Vermilion, LA
Built 1982 Load: 25.3 t ADT: 221
Pulltight Rd
FairOver: TIGER BAYOU
0.7 MI N of LA 586, West Carroll, LA
Built 1997 Load: 25.3 t ADT: 168
South Calvin
FairOver: KYIAIES CREEK
0.42 MI. SOUTH OF LA 156, Winn, LA
Built 1991 Load: 25.3 t ADT: 80
LA0013
FairOver: LIONS PT GULLEY
.6 MI NORTH OF LA 92, Acadia, LA
Built 1951 Load: 25.4 t ADT: 6,068
LA0098
FairOver: CREEK
.1 MI EAST OF LA 91, Acadia, LA
Built 1950 Load: 25.4 t ADT: 729
LA0091
FairOver: LAZY POINT CANAL
1.6 MI NORTH OF LA 92, Acadia, LA
Built 1951 Load: 25.4 t ADT: 1,947
PIERSON RD
FairOver: CREEK
0.1 M W OF K. CEM. RD, Allen, LA
Built 1973 Load: 25.4 t ADT: 130
N. ALLADIN RD.
FairOver: CANAL
0.05 MI. W. OF INT. LA 27, Cameron, LA
Built 1964 Load: 25.4 t ADT: 90
LAKE BREEZE RD.
FairOver: CANAL
0.1 MI. E. OF INT. LA 27, Cameron, LA
Built 1964 Load: 25.4 t ADT: 832
LA0916
FairOver: BLACK BAYOU
1.7 MI N OF LA 8, Catahoula, LA
Built 1965 Load: 25.4 t ADT: 55
Beechgrove Rd
FairOver: OPOSSUM BAYOU
4.8 MI N OF CLINTON, East Feliciana, LA
Built 2003 Load: 25.4 t ADT: 110
LA0106
FairOver: BAYOU CHICOT
0.6 MI EAST OF US 167, Evangeline, LA
Built 1970 Load: 25.4 t ADT: 1,294
LA3195
FairOver: BAYOU TECHE
0.10 MI North OF LA 182, Iberia, LA
Built 1980 Load: 25.4 t ADT: 7,245
JOHNSTON STREET
FairOver: COULEE MINE BR
0.8 MI NE OF LA 3025, Lafayette, LA
Built 1958 Load: 25.4 t ADT: 29,320
LA0544
FairOver: WAFER CREEK
1.6 MI EAST OF LA 3074, Lincoln, LA
Built 1954 Load: 25.4 t ADT: 11,636
LA3005
FairOver: REDWINE CREEK
.12 MI WEST OF US 80, Lincoln, LA
Built 1957 Load: 25.4 t ADT: 917
LA1024
FairOver: CREEK
1.1 M W OF LA 1019, Livingston, LA
Built 1962 Load: 25.4 t ADT: 1,020
US0080
FairOver: ROUNDAWAY BAYOU
10.2 MI EAST OF LA 577, Madison, LA
Built 1955 Load: 25.4 t ADT: 1,558
LA0117
FairOver: MIDDLE CREEK
6.99 MI N OF JCT 118, Natchitoches, LA
Built 1955 Load: 25.4 t ADT: 1,513
CCCFERRY
FairOver: LOWER ALGIERS FERRY FAC.
2.0 MI S. OF LA 407, Orleans, LA
Built 1994 Load: 25.4 t ADT: 1,500
LA0151
FairOver: CREEK
1.22 MI NORTH OF LA 546, Ouachita, LA
Built 1958 Load: 25.4 t ADT: 2,828
LA0151
FairOver: CREEK
1.87 MI NORTH OF LA 546, Ouachita, LA
Built 1958 Load: 25.4 t ADT: 2,828
LA0838
FairOver: CREEK
5.21 MI EAST OF LA 546, Ouachita, LA
Built 1955 Load: 25.4 t ADT: 8,105
STATEPRK
FairOver: CANAL
0.3 MI EAST OF LA 17, Richland, LA
Built 2004 Load: 25.4 t ADT: 300
CCCFERRY
FairOver: PARIS RD/CHAL. FERRY RAM
0.8 MI S OF LA 39, St. Bernard, LA
Built 1968 Load: 25.4 t ADT: 1,500
US0061
FairOver: BONNET CARRE
.7 MI WEST OF LA 48, St. Charles, LA
Built 1935 Load: 25.4 t ADT: 25,051
LA1047
FairOver: BENTON BRANCH
0.3 M E OF LA 441, St. Helena, LA
Built 1957 Load: 25.4 t ADT: 287
LA0182
FairOver: CARENCRO BAYOU
0.8 Mi. NE of I-49, St. Landry, LA
Built 1948 Load: 25.4 t ADT: 16,573
LA0317
FairOver: YELLOW BAYOU
0.5 Mi. North of US 90, St. Mary, LA
Built 1950 Load: 25.4 t ADT: 2,330
LA0016
FairOver: TALLEYS CREEK
LA0016, St. Tammany, LA
Built 1968 Load: 25.4 t ADT: 1,388
US0051
FairOver: BEAVER CREEK
0.5 Miles North of LA 440, Tangipahoa, LA
Built 1935 Load: 25.4 t ADT: 2,266
US0051
FairOver: TERRYS CREEK
US0051, Tangipahoa, LA
Built 1935 Load: 25.4 t ADT: 2,403
LA0022
FairOver: DRAIN
3.7 M E OF US 51, Tangipahoa, LA
Built 1938 Load: 25.4 t ADT: 12,900
LA0038
FairOver: LITTLE SILVER CR
4.3 M E OF LA 1061, Tangipahoa, LA
Built 1961 Load: 25.4 t ADT: 1,648
LA0442
FairOver: NATALBANY RIVER
LA0442, Tangipahoa, LA
Built 1963 Load: 25.4 t ADT: 5,026
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1941 Load: 25.4 t ADT: 8,922
LA0550
FairOver: CAMP CREEK
8.5 MI NORTH OF LA 2, Union, LA
Built 1956 Load: 25.4 t ADT: 464
LA0013
FairOver: COULEE DES ISES
3.36 MI N. OF LA 14, Vermilion, LA
Built 1952 Load: 25.4 t ADT: 2,466
LA0013
FairOver: BAYOU GRAND MARAIS
5.84 MI N. OF LA 14, Vermilion, LA
Built 1952 Load: 25.4 t ADT: 2,466
Showing 2,851-2,900 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 |