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
US0090
FairOver: DRAIN
1.9 MI E. of LA 108, Calcasieu, LA
Built 1983 Load: 32.4 t ADT: 13,695
US0090
FairOver: BAYOU OSIER
0.9 MI W OF I-210, Calcasieu, LA
Built 1958 Load: 32.4 t ADT: 6,080
US0090
FairOver: DRAIN
1.8 MI EAST OF I-210, Calcasieu, LA
Built 1958 Load: 32.4 t ADT: 6,080
LA0012
FairOver: CANAL
3.2 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 2,573
LA0012
FairOver: CANAL
5.3 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 3,097
LA0012
FairOver: CANAL
7.8 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 2,155
LA0012
FairOver: CANAL
9.4 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 3,097
LA0012
FairOver: CANAL
10.0 MI EAST OF LA 109, Calcasieu, LA
Built 1956 Load: 32.4 t ADT: 2,155
LA0027
FairOver: DRAIN
4.4 MI S OF LA 1133, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 6,981
RUTH ST
FairOver: D'INDE BAYOU
1.0 MI N of I-10, Calcasieu, LA
Built 1965 Load: 32.4 t ADT: 19,402
LA0389
FairOver: DRAIN
2.2 MI N OF LA 12, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 1,841
LA0389
FairOver: DRAIN
0.9 MI N OF LA 12, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 1,304
LA0108
FairOver: SPRING GULLY
4.6 MI W OF LA 27, Calcasieu, LA
Built 1962 Load: 32.4 t ADT: 1,553
LA0027
FairOver: DRAIN
3.3 MI N of LA 384, Calcasieu, LA
Built 1957 Load: 32.4 t ADT: 1,482
LA0014
FairOver: GOVERNMENT DITCH
0.4 MI N of LA 27, Calcasieu, LA
Built 1957 Load: 32.4 t ADT: 922
LA0385
FairOver: HIPPOLYTE COULEE
3.8 MI N OF LA 401, Calcasieu, LA
Built 1955 Load: 32.4 t ADT: 3,197
LA0385
FairOver: BAYOU
2.1 MI. N OF LA 3092, Calcasieu, LA
Built 1973 Load: 32.4 t ADT: 10,434
LA0385
FairOver: CONTRABAND BAYOU
0.1 MI NORTH OF LA 384, Calcasieu, LA
Built 1935 Load: 32.4 t ADT: 16,472
LA0014
FairOver: DITCH
2.5 MI EAST OF LA 27, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 2,023
LA0014
FairOver: B C DRAIN CANAL
5.8 MI EAST OF LA 27, Calcasieu, LA
Built 1959 Load: 32.4 t ADT: 2,023
I0210
FairOver: DRAIN
4.2 MI SOUTH OF I-10, Calcasieu, LA
Built 1964 Load: 32.4 t ADT: 57,504
I0010
FairOver: SABINE CANAL
3.3 MI EAST OF LA 108, Calcasieu, LA
Built 1966 Load: 32.4 t ADT: 86,969
I0010
FairOver: RICE CANAL
6.6 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 32.4 t ADT: 86,969
I0010
FairOver: DRAIN
6.6 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 32.4 t ADT: 3,799
I0010
FairOver: DRAIN
11.0 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 32.4 t ADT: 86,969
I0010
FairOver: DRAIN
11.0 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 32.4 t ADT: 11,437
I0010
FairOver: VERDINE BAYOU
1.8 MI E OF I-210, Calcasieu, LA
Built 1960 Load: 32.4 t ADT: 2,578
LA0378
FairOver: BAYOU MARINA
1.4 MI NORTH OF LA 379, Calcasieu, LA
Built 1992 Load: 32.4 t ADT: 25,890
LA0108
FairOver: MAPLE FORK
0.8 MI N of I-10, Calcasieu, LA
Built 1945 Load: 32.4 t ADT: 22,287
LA0379
FairOver: DRAIN
0.01 MI E OF LA 27, Calcasieu, LA
Built 1964 Load: 32.4 t ADT: 5,525
E TANK FARM RD
FairOver: BLACK BAYOU TRIB.
0.6 MI W OF WARD LINE RD, Calcasieu, LA
Built 1988 Load: 32.4 t ADT: 1,449
CONTOUR ST
FairOver: CONTRABAND BAYOU
0.09 MI W of LA 385, Calcasieu, LA
Built 1970 Load: 32.4 t ADT: 2,440
GREEN MOORE RD
FairOver: DYNAMITE SLOUGH
0.9 MI WEST OF LA 109, Calcasieu, LA
Built 1987 Load: 32.4 t ADT: 248
BANKEN RD
FairOver: LITTLE RIVER
0.9 MI EAST OF LA 27, Calcasieu, LA
Built 1986 Load: 32.4 t ADT: 1,547
US0165
FairOver: CREEK
1.6 MI. N OF LA 844, Caldwell, LA
Built 1945 Load: 32.4 t ADT: 6,071
LA0082
FairOver: SABINE LAKE
LA 82 @ TEXAS LINE, Cameron, LA
Built 2010 Load: 32.4 t ADT: 1,900
LA0082
FairOver: NORTH LABOVE BAYOU
1.2 MI. SOUTH OF LA 1143, Cameron, LA
Built 2013 Load: 32.4 t ADT: 2,899
LA0027
FairOver: DRAIN
2.2 MI E OF LA 1142, Cameron, LA
Built 1953 Load: 32.4 t ADT: 1,696
LA0027
FairOver: CREOLE CANAL
0.01 MI W of LA 1143, Cameron, LA
Built 1955 Load: 32.4 t ADT: 2,194
LA0027
FairOver: DRAIN
0.98 MI. NORTH OF LA 384, Cameron, LA
Built 1957 Load: 32.4 t ADT: 2,488
LA0124
FairOver: CALLIHAN CREEK
2.0 MI NORTH OF LA 8, Catahoula, LA
Built 1996 Load: 32.4 t ADT: 1,706
Dixie Springs Rd
FairOver: Creek
0.8 MI E OF LA 126, Catahoula, LA
Built 1989 Load: 32.4 t ADT: 50
Catahoula Ch Rd
FairOver: HAGGERTY CREEK
1.44 MI SW FROM LA124, Catahoula, LA
Built 1987 Load: 32.4 t ADT: 70
US0079
FairOver: CANEY CREEK
1.3 MI NORTH OF LA 9, Claiborne, LA
Built 1930 Load: 32.4 t ADT: 5,728
LA0009
FairOver: CREEK
11.45 MI NORTH OF LA 2, Claiborne, LA
Built 1949 Load: 32.4 t ADT: 1,435
LA0002-A
FairOver: MIDDLEFORK BAYOU DARBONN
.94 MI EAST OF LA 807, Claiborne, LA
Built 1951 Load: 32.4 t ADT: 1,329
LA0002-A
FairOver: LICK CREEK
1.39 MI EAST OF LA 161, Claiborne, LA
Built 1972 Load: 32.4 t ADT: 406
LA0002-A
FairOver: CREEK
2.1 MI EAST OF LA 520, Claiborne, LA
Built 1948 Load: 32.4 t ADT: 389
LA0002-A
FairOver: BRANCH
6.69 MI SOUTH OF LA 9, Claiborne, LA
Built 1927 Load: 32.4 t ADT: 467
LA0002
FairOver: BUCK CREEK
2.67 MI EAST OF LA 539, Claiborne, LA
Built 1962 Load: 32.4 t ADT: 987
Showing 3,851-3,900 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 |