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
LA3132
FairOver: JEWELLA AVE
3.7 MI. E. OF LA 511, Caddo, LA
Built 1991 Load: 39.0 t ADT: 53,886
LA3132
FairOver: JEWELLA AVE
3.2 MI. W. OF I-49, Caddo, LA
Built 1991 Load: 39.0 t ADT: 23,520
I0220
FairOver: I-220 NBL, JUNIOR PLACE
.98 MI NORTH OF I-20, Caddo, LA
Built 1985 Load: 39.0 t ADT: 42,148
I0220
FairOver: I-220 SBL, JUNIOR PLACE
0.98 MI NORTH OF I-20, Caddo, LA
Built 1985 Load: 39.0 t ADT: 13,700
US0171
FairOver: UPRR
.1 MI NORTH OF US 90, Calcasieu, LA
Built 1972 Load: 39.0 t ADT: 18,040
LA0383
FairOver: DRAIN
0.8 MI N of US 90, Calcasieu, LA
Built 1985 Load: 39.0 t ADT: 677
WEEKLY RD. (LA 27)
FairOver: BAYOU DINDE
.23 MI NORTH OF I-10, Calcasieu, LA
Built 1987 Load: 39.0 t ADT: 1,950
LA0126
FairOver: DRAIN
6.1 MI SOUTH OF LA 849, Caldwell, LA
Built 1984 Load: 39.0 t ADT: 117
LA0126
FairOver: HURRICANE CREEK
2.5 MI N OF LA 851, Caldwell, LA
Built 1982 Load: 39.0 t ADT: 1,092
LA0004
FairOver: LOST CREEK RELIEF
1.47 MI WEST OF LA 846, Caldwell, LA
Built 1976 Load: 39.0 t ADT: 311
LA0004
FairOver: LOST CREEK
1.5 MI WEST OFLA 846, Caldwell, LA
Built 1978 Load: 39.0 t ADT: 311
LA0004
FairOver: CREEK
1.3 MI WEST OF LA 3239, Caldwell, LA
Built 1978 Load: 39.0 t ADT: 1,931
LA0126
FairOver: CREEK
9.1 MI W OF LA 3239, Caldwell, LA
Built 1974 Load: 39.0 t ADT: 611
LA0126
FairOver: CREEK
8.9 MI W OF LA 3239, Caldwell, LA
Built 1974 Load: 39.0 t ADT: 611
LA0126
FairOver: MESSER CREEK
6.0 MI W OF LA 3239, Caldwell, LA
Built 1977 Load: 39.0 t ADT: 611
LA0127
FairOver: CASTOR CR RELIEF
3.3 MI N OF LA 125, Caldwell, LA
Built 1972 Load: 39.0 t ADT: 314
LA0127
FairOver: CASTOR RELIEF
3.5 MI NORTH OF LA 125, Caldwell, LA
Built 1972 Load: 39.0 t ADT: 314
LA0506
FairOver: CASTOR CREEK
6.4 MI WEST OF US 165, Caldwell, LA
Built 1975 Load: 39.0 t ADT: 306
LA0913
FairOver: NORRIS SPRINGS
0.78 M S of LA 915, Catahoula, LA
Built 1983 Load: 39.0 t ADT: 514
LA0126
FairOver: ROCKY CREEK
1.8 MI S OF LA 459, Catahoula, LA
Built 1981 Load: 39.0 t ADT: 544
LA0126
FairOver: CREEK
2.4 MI SOUTH OF LA 8, Catahoula, LA
Built 1974 Load: 39.0 t ADT: 878
LA0126
FairOver: SANDY LAKE BAYOU
2.8 MI SOUTH OF LA 8, Catahoula, LA
Built 1974 Load: 39.0 t ADT: 878
LA0921
FairOver: CASH BAYOU
.5 MI S OF LA 567, Catahoula, LA
Built 1970 Load: 39.0 t ADT: 145
LA0923
FairOver: ELM SLOUGH
1.71 MI S OF LA 126, Catahoula, LA
Built 1976 Load: 39.0 t ADT: 997
LA0923
FairOver: WALLACE RIDGE
.36 MI NORTH OF LA 126, Catahoula, LA
Built 1980 Load: 39.0 t ADT: 550
LA0923
FairOver: BAYOU
.7 MI NORTH OF LA 126, Catahoula, LA
Built 1976 Load: 39.0 t ADT: 550
LA0923
FairOver: BAYOU
1.0 MI NORTH OF LA 126, Catahoula, LA
Built 1979 Load: 39.0 t ADT: 550
LA0002-A
FairOver: CREEK
3.42 MI EAST OF LA 807, Claiborne, LA
Built 1982 Load: 39.0 t ADT: 1,329
LA0015
FairOver: CREEK
8.69 MI EAST OF LA 910, Concordia, LA
Built 1980 Load: 39.0 t ADT: 399
LA0566
FairOver: CANEY BAYOU
0.17 M N of US 84, Concordia, LA
Built 1985 Load: 39.0 t ADT: 74
LA0175
FairOver: BRUSHY BAYOU
.6 MI NORTH OF SOUTH INT, De Soto, LA
Built 1974 Load: 39.0 t ADT: 1,770
LA0175
FairOver: TENMILE BAYOU
1.1 MI NORTH OF NORTH INT, De Soto, LA
Built 1974 Load: 39.0 t ADT: 1,770
LA0513
FairOver: RELIEF
.5 MI NORTH OF LA 346, De Soto, LA
Built 1975 Load: 39.0 t ADT: 243
LA0513
FairOver: CREEK
.6 MI NORTH OF LA 346, De Soto, LA
Built 1975 Load: 39.0 t ADT: 243
LA0513
FairOver: RELIEF
.8 MI NORTH OF LA 346, De Soto, LA
Built 1975 Load: 39.0 t ADT: 243
LA0513
FairOver: CREEK
5.4 MI NORTH OF LA 346, De Soto, LA
Built 1975 Load: 39.0 t ADT: 243
I0049
FairOver: SWEEPCO R/R
0.45 MI S OF US 84 INTG, De Soto, LA
Built 1986 Load: 39.0 t ADT: 29,022
LA0789
FairOver: KEATCHIE BAYOU
2.66 MI NORTH OF LA 172, De Soto, LA
Built 1981 Load: 39.0 t ADT: 1,504
I0010
FairOver: PERKINS RD. ON RAMP
I0010, East Baton Rouge, LA
Built 1964 Load: 39.0 t ADT: 8,250
LA0577
FairOver: DRAINAGE CANAL
3.6 MI SOUTH OF LA 877, East Carroll, LA
Built 1972 Load: 39.0 t ADT: 125
LA0877
FairOver: JOE'S BAYOU
1.79 MI EAST OF LA 577, East Carroll, LA
Built 1982 Load: 39.0 t ADT: 143
LA0877
FairOver: CARRAWAY LAKE
6.26 MI N of LA 577, East Carroll, LA
Built 1982 Load: 39.0 t ADT: 143
LA0881
FairOver: TENSAS BAYOU
1.33 MI EAST OF LA 134, East Carroll, LA
Built 1979 Load: 39.0 t ADT: 230
LA0579
FairOver: JOE'S BAYOU
3.38 MI SOUTH OF LA 577, East Carroll, LA
Built 1979 Load: 39.0 t ADT: 119
LA3181
FairOver: DRAINAGE CANAL
.67 MI EAST OF LA 134, East Carroll, LA
Built 1979 Load: 39.0 t ADT: 548
LA0422
FairOver: LITTLE COMITE CREEK
LA0422, East Feliciana, LA
Built 1979 Load: 39.0 t ADT: 153
LA0422
FairOver: COMITE CREEK
LA0422, East Feliciana, LA
Built 1979 Load: 39.0 t ADT: 153
LA0957
FairOver: OLIVE BRANCH
0.6 M S of LA 955&LA 957, East Feliciana, LA
Built 1981 Load: 39.0 t ADT: 1,193
LA0758
FairOver: BAYOU
.4 MI EAST OF LA 29, Evangeline, LA
Built 1972 Load: 39.0 t ADT: 240
LA0758
FairOver: DOZA BAYOU
1.16 MI EAST OF LA 29, Evangeline, LA
Built 1972 Load: 39.0 t ADT: 240
Showing 5,301-5,350 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 |