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
Springridge-Texas
FairOver: SPRDG TEX LINE,JOHNSON B
0.4 MI. WEST OF LA 1, Caddo, LA
Built 1979 Load: 26.9 t ADT: 2,606
Jewella NB
FairOver: AIRPORT DITCH
0.2 MI. SO.OF LA 511, Caddo, LA
Built 1972 Load: 26.9 t ADT: 20,178
PIERREMONT AVE
FairOver: BAYOU PIERRE
0.8 MI WEST OF LA 1, Caddo, LA
Built 1985 Load: 26.9 t ADT: 14,451
US0171
FairOver: CALCASIEU RIVER
1.7 MI NORTH OF I-10, Calcasieu, LA
Built 1969 Load: 26.9 t ADT: 32,659
LA0177
FairOver: LITTLE WALLACE BAYOU
5.6 MI EAST OF LA 175, De Soto, LA
Built 1959 Load: 26.9 t ADT: 1,398
Hurdle Rd
FairOver: BAYOU MARINGOUIN
JUNCTION LA 76, Iberville, LA
Built 1984 Load: 26.9 t ADT: 50
US0090-B
FairOver: RAMP BA-2
2.6 MI EAST OF LA 23, Jefferson, LA
Built 1984 Load: 26.9 t ADT: 15,955
LA3056
FairOver: DRAIN
0.9 MI S OF LA 14, Jefferson Davis, LA
Built 1961 Load: 26.9 t ADT: 408
I0020
FairOver: YOUNG'S BAYOU
.7 MI EAST OF LA 594, Ouachita, LA
Built 1965 Load: 26.9 t ADT: 15,642
PEREZ RD
FairOver: DRAINAGE CANAL
0.01 MI W. OF HWY 39, Plaquemines, LA
Built 1968 Load: 26.9 t ADT: 220
LA0474
FairOver: CREEK
3.37 MI EAST OF LA 191, Sabine, LA
Built 1956 Load: 26.9 t ADT: 1,105
LA1043
FairOver: SANDY RUN
1.8 M N OF LA 10, St. Helena, LA
Built 1971 Load: 26.9 t ADT: 320
LA0435
FairOver: ABITA RIVER
LA 435 @ LOGMI 0.77, St. Tammany, LA
Built 1983 Load: 26.9 t ADT: 4,200
Honey Island Swamp
FairOver: DUCK BAYOU
0.9M EAST OF I-59, St. Tammany, LA
Built 1982 Load: 26.9 t
US0190
FairOver: DRAIN
0.9 M W OF I-55, Tangipahoa, LA
Built 1932 Load: 26.9 t ADT: 14,856
GREEN BRIDGE RD
FairOver: BAYOU DE LOUTRE
6 MI E OF SPEARSVILL, Union, LA
Built 1984 Load: 26.9 t ADT: 99
UNNAMED ROAD
FairOver: ODOM CREEK
VE 812 719, Vernon, LA
Built 2005 Load: 26.9 t ADT: 40
Regan Rd
FairOver: DRAIN
0.4 MI W of LA 3070, Acadia, LA
Built 2008 Load: 27.2 t ADT: 96
LA0098
FairOver: BAYOU DE CANNES
2.53 MI WEST OF LA 97, Acadia, LA
Built 1963 Load: 27.2 t ADT: 1,790
LA0091
FairOver: LITTLE BAYOU
3.2 MI NORTH OF LA 100, Acadia, LA
Built 1954 Load: 27.2 t ADT: 1,617
LA1111
FairOver: WYKOFF BAYOU
1.1 MI NORTH OF I-10, Acadia, LA
Built 1963 Load: 27.2 t ADT: 1,773
LA0937
FairOver: NEW RIVER
LA0937, Ascension, LA
Built 1962 Load: 27.2 t ADT: 1,313
LA0115
FairOver: BAYOU BOEUF
LA0115, Avoyelles, LA
Built 1958 Load: 27.2 t ADT: 2,504
LA1175
FairOver: BAYOU BOEUF
0.79 MILE EAST OF LA 29, Avoyelles, LA
Built 1967 Load: 27.2 t ADT: 79
LA0109
FairOver: JOHNS GULLY
3.4 MI. N. OF LA 389, Beauregard, LA
Built 1963 Load: 27.2 t ADT: 303
LA1147
FairOver: W CANEY BRANCH
2.9 MI. N OF INT LA113, Beauregard, LA
Built 1967 Load: 27.2 t ADT: 295
LA1147
FairOver: CREEK
4.74 MI. N OF LA113, Beauregard, LA
Built 1967 Load: 27.2 t ADT: 624
LA0009
FairOver: BEAR CREEK
5.23 MI NORTH OF LA 507, Bienville, LA
Built 1951 Load: 27.2 t ADT: 653
LA0155
FairOver: COULEE CREEK
1.2 MI EAST OF LA 796, Bienville, LA
Built 1956 Load: 27.2 t ADT: 1,222
LA0501
FairOver: DRAIN
7.23 MI SOUTH OF LA 4, Bienville, LA
Built 1960 Load: 27.2 t ADT: 318
LA0525
FairOver: CREEK
1.0 MI EAST OF LA 169, Caddo, LA
Built 1969 Load: 27.2 t ADT: 4,294
LA0525
FairOver: BUCHANAN BAYOU
1.8 MI EAST OF LA 169, Caddo, LA
Built 1969 Load: 27.2 t ADT: 4,294
LA0170
FairOver: CREEK
2.1 MI WEST OF LA 1, Caddo, LA
Built 1978 Load: 27.2 t ADT: 1,200
LA0170
FairOver: CREEK
1.58 MI WEST OF LA 1, Caddo, LA
Built 1978 Load: 27.2 t ADT: 1,200
ROBERT ST
FairOver: HOLLYWOOD DITCH
0.2 MI.SO. HOLLYWOOD, Caddo, LA
Built 1960 Load: 27.2 t ADT: 200
Hereford Rd
FairOver: TETE BAYOU
4.7 MI W OF HWY 538, Caddo, LA
Built 1979 Load: 27.2 t ADT: 58
I0010
FairOver: ANTOINNE GULLY
2.8 MI EAST OF US 171, Calcasieu, LA
Built 1964 Load: 27.2 t ADT: 71,509
I0010
FairOver: ANTOINNE GULLY
0.6 MI W OF LA 397, Calcasieu, LA
Built 1964 Load: 27.2 t ADT: 11,437
HODGES ST
FairOver: DRAINAGE CANAL
0.5 MI. S. OF BROAD ST., Calcasieu, LA
Built 1928 Load: 27.2 t ADT: 3,268
LA0127
FairOver: CASTOR CR RELIEF
3.7 MI NORTH OF LA 125, Caldwell, LA
Built 1970 Load: 27.2 t ADT: 314
LA0844
FairOver: HURRICANE CREEK
0.81 M S of LA 547, Caldwell, LA
Built 1981 Load: 27.2 t ADT: 955
LA0850
FairOver: HURRICANE CREEK
6.1 MI NORTH OF LA 849, Caldwell, LA
Built 1982 Load: 27.2 t ADT: 468
LA0846
FairOver: CREEK
4.33 MI N OF LA 4, Caldwell, LA
Built 1982 Load: 27.2 t ADT: 650
LA0851
FairOver: BOGGY BAYOU
0.20 M W of LA 849, Caldwell, LA
Built 1983 Load: 27.2 t ADT: 166
LA0124
FairOver: RAWSON CREEK
4.3 MI N OF LA 8, Catahoula, LA
Built 1970 Load: 27.2 t ADT: 1,007
LA3101
FairOver: DRAIN
2.8 MI E OF LA 923, Catahoula, LA
Built 1966 Load: 27.2 t ADT: 391
LA0002
FairOver: BAYOU DARBONNE
1.0 MI EAST OF LA 504, Claiborne, LA
Built 1963 Load: 27.2 t ADT: 1,302
LA0154
FairOver: LEATHERMAN CREEK
3.20 MI NORTH OF I-20, Claiborne, LA
Built 1981 Load: 27.2 t ADT: 609
LA0005
FairOver: BUSHNECK BAYOUREL
4.99 MI NORTH OF US 84, De Soto, LA
Built 1948 Load: 27.2 t ADT: 3,931
LA0005
FairOver: BUSHNECK BAYOU
5.3MI NORTH OF US 84, De Soto, LA
Built 1948 Load: 27.2 t ADT: 3,931
Showing 3,051-3,100 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 |