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
LA0537
FairOver: DRAIN
7.6 MI NORTH OF LA 2, Bossier, LA
Built 1973 Load: 38.1 t ADT: 67
LA0538
FairOver: CREEK
4.52 MI N OF LA 173, Caddo, LA
Built 1999 Load: 38.1 t ADT: 984
LA0538
FairOver: WALNUT BAYOU
5.40 MI N OF LA 173, Caddo, LA
Built 1998 Load: 38.1 t ADT: 662
LA0530
FairOver: OLD CHANNEL BLACK BAYOU
.34 MI WEST OF LA 1, Caddo, LA
Built 1974 Load: 38.1 t ADT: 177
I0020
FairOver: JEWELLA AVE
2.93 MI EAST OF I-220, Caddo, LA
Built 1965 Load: 38.1 t ADT: 98,318
I0020
FairOver: JEWELLA AVE
2.93 MI EAST OF I-220, Caddo, LA
Built 1965 Load: 38.1 t ADT: 98,318
LA0526
FairOver: MISSOURI PACIFIC RAILROA
1.2 MI SOUTH OF I-20, Caddo, LA
Built 1981 Load: 38.1 t ADT: 15,308
LA0385
FairOver: BLACK BAYOU
2.3 MI NORTH OF LA 401, Calcasieu, LA
Built 1974 Load: 38.1 t ADT: 3,197
LA3059
FairOver: LEBLEU DITCH
6.7 MI EAST OF US 171, Calcasieu, LA
Built 1976 Load: 38.1 t ADT: 2,383
I0010
FairOver: US 90B (ENTERPRISE BLVD)
1.0 MI E of LA 385, Calcasieu, LA
Built 1961 Load: 38.1 t ADT: 73,488
I0010
FairOver: US 90B (ENTERPRISE BLVD)
1.9 MI W of US 171, Calcasieu, LA
Built 1961 Load: 38.1 t ADT: 11,437
LA3256
FairOver: CANAL
2.1 MI. E OF LA 397, Calcasieu, LA
Built 1969 Load: 38.1 t ADT: 1,111
LA3256
FairOver: BAYOU
1.0 MI. E OF LA 383, Calcasieu, LA
Built 1969 Load: 38.1 t ADT: 1,878
LA0533
FairOver: GEE CREEK RELIEF
6.71 MI NORTH OF LA 519, Claiborne, LA
Built 1976 Load: 38.1 t ADT: 21
LA0129
FairOver: SIX MILE BAYOU
1.35 MI N OF LA 909, Concordia, LA
Built 1971 Load: 38.1 t ADT: 161
LA3015
FairOver: CREEK
2.82 MI EAST OF LA 5, De Soto, LA
Built 1977 Load: 38.1 t ADT: 1,157
LA0067
FairOver: OLIVE BRANCH
0.2 Mi N of LA 412, East Feliciana, LA
Built 1965 Load: 38.1 t ADT: 5,772
LA0067
FairOver: CANY BRANCH
0.2 M N of LA 63&LA 67, East Feliciana, LA
Built 1976 Load: 38.1 t ADT: 5,772
LA0010
FairOver: ICG RAILROAD
LA0010, East Feliciana, LA
Built 1955 Load: 38.1 t ADT: 5,830
LA0955
FairOver: FISHER BAYOU
0.8 M SE of LA 955&LA 19, East Feliciana, LA
Built 1970 Load: 38.1 t ADT: 989
LA0955
FairOver: FISHER BAYOU
0.6 M SE of LA 19, East Feliciana, LA
Built 1970 Load: 38.1 t ADT: 989
LA0562
FairOver: CREEK
1.40 M S of LA 875, Franklin, LA
Built 1981 Load: 38.1 t ADT: 2,036
LA0471
FairOver: DARTIGO CREEK
0.97 MI. NORTH OF LA 122, Grant, LA
Built 1982 Load: 38.1 t ADT: 673
US0090
FairOver: COMMERCIAL CANAL
1.37 MI E of LA 329, Iberia, LA
Built 1999 Load: 38.1 t ADT: 1,301
LA0146
FairOver: EDWARDS BRANCH
7.5 MI SOUTH OF LA 155, Jackson, LA
Built 1973 Load: 38.1 t ADT: 882
LA0148
FairOver: EDMISTON CREEK
3.46 MI WEST OF LA 146, Jackson, LA
Built 1976 Load: 38.1 t ADT: 532
LA0102
FairOver: GRAND MARAIS BAYOU
.64 MI EAST OF LA 395, Jefferson Davis, LA
Built 1990 Load: 38.1 t ADT: 3,728
LA3258
FairOver: BAYOU
0.8 MI EAST OF US 165, Jefferson Davis, LA
Built 1969 Load: 38.1 t ADT: 1,878
LA0182
FairOver: VERMILION RIVER
0.5 MI N OF LA 3095, Lafayette, LA
Built 1981 Load: 38.1 t ADT: 24,061
LA0028
FairOver: ALLIGATOR BAYOU
1.40 MI E of LA 115, LaSalle, LA
Built 1960 Load: 38.1 t ADT: 5,026
LA0028
FairOver: DIVERSION CHANNEL
10.3 MI SOUTH OF LA 84, LaSalle, LA
Built 1972 Load: 38.1 t ADT: 5,026
LA0460
FairOver: CREEK
2.3 MI EAST OF LA 127, LaSalle, LA
Built 1980 Load: 38.1 t ADT: 776
LA0460
FairOver: CREEK
4.0 MI EAST OF LA 127, LaSalle, LA
Built 1974 Load: 38.1 t ADT: 776
LA0151
FairOver: DARBONNE BAYOU RELIEF
1.6 MI EAST OF LA 563, Lincoln, LA
Built 1975 Load: 38.1 t ADT: 2,216
LA0151
FairOver: DARBONNE BAYOU RELIEF
2.1 MI EAST OF LA 563, Lincoln, LA
Built 1975 Load: 38.1 t ADT: 2,216
I0012
FairOver: HOG BRANCH
I0012, Livingston, LA
Built 1969 Load: 38.1 t ADT: 75,867
I0012
FairOver: HOG BRANCH
I0012, Livingston, LA
Built 1969 Load: 38.1 t ADT: 44,252
LA1032
FairOver: DRAIN
2.3 M S OF I-12, Livingston, LA
Built 1976 Load: 38.1 t ADT: 9,267
I0020
FairOver: TENSAS-RIVER
3.5 MI EAST OF LA 577, Madison, LA
Built 1975 Load: 38.1 t ADT: 31,481
I0020
FairOver: TENSAS-RIVER
3.5 MI EAST OF LA 577, Madison, LA
Built 1975 Load: 38.1 t ADT: 31,481
I0020
FairOver: TENSAS-RIVER
6.3 MI EAST OF LA 577, Madison, LA
Built 1975 Load: 38.1 t ADT: 31,481
I0020
FairOver: TENSAS-RIVER
6.3 MI EAST OF LA 577, Madison, LA
Built 1975 Load: 38.1 t ADT: 31,481
I0020
FairOver: BAYOU DESPAIR
6.0 MI WEST OF US 65, Madison, LA
Built 1975 Load: 38.1 t ADT: 155
LA0134
FairOver: LITTLE B BOUEUF
1.1 MI EAST OF LA 139, Morehouse, LA
Built 1951 Load: 38.1 t ADT: 1,183
LA0593
FairOver: CREEK
2.1 MI NORTH OF LA 3079, Morehouse, LA
Built 1971 Load: 38.1 t ADT: 1,790
LA0009
FairOver: BRICKYARD BRANCH
1.79 MI. NORTH OF LA 126, Natchitoches, LA
Built 1977 Load: 38.1 t ADT: 1,131
LA0479
FairOver: RAGAN CREEK
2.4 MI. E OF INT LA9, Natchitoches, LA
Built 1985 Load: 38.1 t ADT: 719
LA0479
FairOver: RAGAN CREEK RELIEF
2.9 MI. E OF INT LA9, Natchitoches, LA
Built 1985 Load: 38.1 t ADT: 719
LA0479
FairOver: LUSTER CREEK
4.6 MI. E OF INT LA9, Natchitoches, LA
Built 1985 Load: 38.1 t ADT: 719
I0049
FairOver: B.JULIAN/LONGLOIS HILL
1.13 MI. NORTH OF LA 120, Natchitoches, LA
Built 1988 Load: 38.1 t ADT: 18,305
Showing 5,151-5,200 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 |