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
LA0112
FairOver: EAST RELIEF
0.8 MI E of LA 1146, Beauregard, LA
Built 1957 Load: 20.9 t ADT: 718
LA0112
FairOver: HOG BRANCH
0.3 MI E of LA 399, Beauregard, LA
Built 1958 Load: 20.9 t ADT: 718
LA0112
FairOver: WHISKY CHITTO CREEK
0.6 MI E of LA 399, Beauregard, LA
Built 1958 Load: 20.9 t ADT: 718
LA0112
FairOver: DEER LAKE SLOUGH
1.0 MI. E OF LA 399, Beauregard, LA
Built 1958 Load: 20.9 t ADT: 718
LA0112
FairOver: BEAR SLOUGH
1.3 MI E of LA 399, Beauregard, LA
Built 1958 Load: 20.9 t ADT: 718
Linton-Bellevue Rd
FairOver: Bodcau Bayou Trib
4.5 MI W OF LA 157, Bossier, LA
Built 2013 Load: 20.9 t ADT: 220
Rocky Mount Road
FairOver: Lil Cypress Bayou
3.1 Mi. SE of LA 3, Bossier, LA
Built 1994 Load: 20.9 t ADT: 50
Goodman Springs Rd
FairOver: Boggs Creek
4.0 M N OF LA 2, Bossier, LA
Built 1990 Load: 20.9 t ADT: 50
US0090
FairOver: ENGLISH BAYOU
1.17 MI EAST OF LA 3256, Calcasieu, LA
Built 1953 Load: 20.9 t ADT: 6,080
US0090
FairOver: ENGLISH BAYOU
3.1 MI EAST OF LA 3256, Calcasieu, LA
Built 1953 Load: 20.9 t ADT: 6,080
LA0027
FairOver: BUXTON CREEK
0.5 MI N OF LA 12, Calcasieu, LA
Built 1953 Load: 20.9 t ADT: 4,683
LA0108
FairOver: CHOUPIQUE BAYOU
LA0108, Calcasieu, LA
Built 1962 Load: 20.9 t ADT: 1,553
OFF HIGHWAY 27
FairOver: ROADSIDE CANAL
NATURE TRAIL, Cameron, LA
Built 1985 Load: 20.9 t ADT: 76
LA0175
FairOver: LITTLE BAYOU NA BONCHASS
1.1 MI NORTH OF LA 3015, De Soto, LA
Built 1957 Load: 20.9 t ADT: 4,306
LA0175
FairOver: CANEY BAYOU
1.6 MI SOUTH OF LA 5, De Soto, LA
Built 1957 Load: 20.9 t ADT: 4,051
LA0175
FairOver: CANEY BAYOU REL
1.4 MI SOUTH OF LA 5, De Soto, LA
Built 1957 Load: 20.9 t ADT: 4,051
LA0134
FairOver: CARRAWAY LAKE
3.9 MI NORTH OF EAST INT, East Carroll, LA
Built 1969 Load: 20.9 t ADT: 759
LA0580
FairOver: CREEK
3.1 Mi E of LA 577, East Carroll, LA
Built 1958 Load: 20.9 t ADT: 448
LA0037
FairOver: LILLYS CREEK
0.4 M NE of LA 37&LA 63, East Feliciana, LA
Built 1955 Load: 20.9 t ADT: 3,362
LA0029
FairOver: BAYOU MARRON
1.6 MI NORTH OF LA 1165, Evangeline, LA
Built 1951 Load: 20.9 t ADT: 2,770
LA0029
FairOver: COULEE DE MANUEL
1.1 Mi. N. of LA 104, Evangeline, LA
Built 1949 Load: 20.9 t ADT: 3,440
LA1172
FairOver: BAYOU
3.2 MI EAST OF LA 13, Evangeline, LA
Built 1966 Load: 20.9 t ADT: 704
LA0083
FairOver: COMMMERICAL CANAL
1.1 MI SOUTH OF LA 14, Iberia, LA
Built 1948 Load: 20.9 t ADT: 3,451
LA0074
FairOver: BAYOU BREAUX
0.25 M NW LA 74&LA 3115, Iberville, LA
Built 1955 Load: 20.9 t ADT: 5,692
US0167
FairOver: CREEK
4.6 Mi. SOUTH of LA 3061, Jackson, LA
Built 1951 Load: 20.9 t ADT: 8,018
CAROL SUE AVE
FairOver: OUTFALL CANAL
0.2 M S OF BEHRMAN HWY, Jefferson, LA
Built 1980 Load: 20.9 t ADT: 1,000
PARK PLACE DR
FairOver: OUTFALL CANAL
0.2 E. OF BEHRMAN HWY., Jefferson, LA
Built 1970 Load: 20.9 t ADT: 5,000
LA0127
FairOver: MILL CREEK
.2 MI SOUTH OF LA 503, LaSalle, LA
Built 1950 Load: 20.9 t ADT: 3,888
LA0127
FairOver: BAYOU FUNNYLOUIS
.9 MI NORTH OF LA 503, LaSalle, LA
Built 1956 Load: 20.9 t ADT: 3,888
LA0120
FairOver: WINN CREEK
6.8 MI. E OF INT LA487, Natchitoches, LA
Built 1950 Load: 20.9 t ADT: 1,715
US0080
FairOver: WEST RELIEF
3.6 MI EAST OF LA 594, Ouachita, LA
Built 1955 Load: 20.9 t ADT: 2,747
MARVIN HEAD RD
FairOver: SOUTH PRONG PRARION BAYO
U MI. E. HWY. 557, Ouachita, LA
Built 1970 Load: 20.9 t ADT: 228
LA0107
FairOver: BRUSHY BRANCH
1.04 MI. NORTH OF LA 3128, Rapides, LA
Built 1953 Load: 20.9 t ADT: 3,354
US0080
FairOver: COW BAYOU
1.9 MI EAST OF LA 583, Richland, LA
Built 1930 Load: 20.9 t ADT: 1,451
US0080
FairOver: CREEK
2.6 MI EAST OF LA 183, Richland, LA
Built 1930 Load: 20.9 t ADT: 1,451
LA0474
FairOver: DRY CREEK
6.70 MI EAST OF LA 191, Sabine, LA
Built 1956 Load: 20.9 t ADT: 1,105
LA0474
FairOver: NASHES CREEK
4.28 MI EAST OF LA 191, Sabine, LA
Built 1956 Load: 20.9 t ADT: 1,105
LA0441
FairOver: KILLIAN BRANCH
0.1 M N OF LA 16, St. Helena, LA
Built 1957 Load: 20.9 t ADT: 584
LA0441
FairOver: CRITTENDON CREEK
LA0441, St. Helena, LA
Built 1959 Load: 20.9 t ADT: 420
US0167
FairOver: COULEE GARRAGUE
4.41 Mi NW of LA 182, St. Landry, LA
Built 1955 Load: 20.9 t ADT: 8,773
LA0103
FairOver: TECHE BAYOU @ LEONVILLE
0.22 MI NORTH OF LA 31, St. Landry, LA
Built 1953 Load: 20.9 t ADT: 2,462
LA0031
FairOver: DAIGRE CANAL
1.5 MI N of LA 86, St. Martin, LA
Built 1950 Load: 20.9 t ADT: 4,367
LA0083
FairOver: BELLIVUE CANAL
4.5 MI NORTH OF LA 319, St. Mary, LA
Built 1955 Load: 20.9 t ADT: 3,078
LA1078
FairOver: COWPEN BRANCH
LA1078, St. Tammany, LA
Built 1957 Load: 20.9 t ADT: 883
LA1078
FairOver: HORSE BRANCH
LA1078, St. Tammany, LA
Built 1957 Load: 20.9 t ADT: 883
US0190
FairOver: HOLDEN BRANCH
1.6 M E OF LA 445, Tangipahoa, LA
Built 1954 Load: 20.9 t ADT: 8,262
LA0055
FairOver: ST LOUIS CANAL
.5 MI SOUTH OF LA 24, Terrebonne, LA
Built 1953 Load: 20.9 t ADT: 4,035
US0167
FairOver: CORNEY BAYOU REL
2.0 MI SOUTH OF LA 15, Union, LA
Built 1952 Load: 20.9 t ADT: 422
US0167
FairOver: NORTH SLOUGH
1.5 MI SOUTH OF LA 15, Union, LA
Built 1952 Load: 20.9 t ADT: 422
LA0014
FairOver: COULEE KINNEY
1.6 MI E. OF LA 343, Vermilion, LA
Built 1956 Load: 20.9 t ADT: 7,768
Showing 2,101-2,150 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 |