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
LA0001
FairOver: DRAINAGE DITCH
0.07 MI. NORTH OF LA 1192, Avoyelles, LA
Built 1931 Load: 32.4 t ADT: 6,559
LA0001
FairOver: COULEE DES GRUE
0.6 MILE SOUTH OF LA 452, Avoyelles, LA
Built 1931 Load: 32.4 t ADT: 18,571
LA0107
FairOver: BLACK BAYOU
6.06 MI. SOUTH OF LA 1179, Avoyelles, LA
Built 1999 Load: 32.4 t ADT: 1,214
W Bon Tempt St
FairOver: DRAINAGE DITCH
0.1 M. SE OF JCT LA 1, Avoyelles, LA
Built 1970 Load: 32.4 t ADT: 310
Ruby-Centerpoint
FairOver: WIGGINS BAYOU
0.9 MI. SOUTH OF LA 107, Avoyelles, LA
Built 1994 Load: 32.4 t ADT: 180
US0171
FairOver: BAYOU
1.65 MILES NORTH OF BEAUR, Beauregard, LA
Built 2007 Load: 32.4 t ADT: 12,466
LA0012
FairOver: CREEK
4.8 MI. E OF LA 27, Beauregard, LA
Built 1931 Load: 32.4 t ADT: 4,041
LA0012
FairOver: CREEK
8.5 MI. E OF LA 27, Beauregard, LA
Built 1938 Load: 32.4 t ADT: 4,041
LA0012
FairOver: CREEK
11.0 MI. E OF LA27, Beauregard, LA
Built 1938 Load: 32.4 t ADT: 3,530
US0171
FairOver: CREEK
3.1 MI NORTH OF US 190, Beauregard, LA
Built 1932 Load: 32.4 t ADT: 12,466
US0171
FairOver: CREEK
1.6 MI N OF LA 110, Beauregard, LA
Built 2007 Load: 32.4 t ADT: 8,463
US0171
FairOver: CREEK
2.1 MI N OF LA 110, Beauregard, LA
Built 2007 Load: 32.4 t ADT: 8,463
US0171
FairOver: BARRENLIN BRANCH
2.9 MI NORTH OF LA 110, Beauregard, LA
Built 2007 Load: 32.4 t ADT: 8,463
US0171
FairOver: CREEK
4.1 MI NORTH OF 110, Beauregard, LA
Built 2007 Load: 32.4 t ADT: 8,463
LA0026
FairOver: BRUSHY CREEK
4.1 MI E of US 171, Beauregard, LA
Built 1950 Load: 32.4 t ADT: 2,585
LA0026
FairOver: DRAIN
4.5 MI. E OF US 171, Beauregard, LA
Built 1954 Load: 32.4 t ADT: 2,585
LA0027
FairOver: CREEK
3.3 MI N of LA 110, Beauregard, LA
Built 1955 Load: 32.4 t ADT: 3,333
LA0389
FairOver: DRAIN
15.4 MI NORTH LA 109, Beauregard, LA
Built 1967 Load: 32.4 t ADT: 442
LA0389
FairOver: BUGGER BRANCH
17.1MI NORTH LA 109, Beauregard, LA
Built 1967 Load: 32.4 t ADT: 442
LA0389
FairOver: DRAIN
6.1 MI. S OF INT US190, Beauregard, LA
Built 1951 Load: 32.4 t ADT: 442
LA0389
FairOver: DRAIN
5.4 MI. S OF INT US190, Beauregard, LA
Built 1951 Load: 32.4 t ADT: 442
LA0389
FairOver: JOHNSON BRANCH
3.7 MI. S OF INT US190, Beauregard, LA
Built 1951 Load: 32.4 t ADT: 442
LA0389
FairOver: DRAIN
3.15 MI. S OF INT US190, Beauregard, LA
Built 1951 Load: 32.4 t ADT: 442
LA0389
FairOver: DRAIN
.95 MI. S OF INT US190, Beauregard, LA
Built 1957 Load: 32.4 t ADT: 442
LA0112
FairOver: DRAIN
3.9 MI E of LA 1146, Beauregard, LA
Built 1956 Load: 32.4 t ADT: 718
LA0112
FairOver: CREEK
2.9 MI W of LA 399, Beauregard, LA
Built 1957 Load: 32.4 t ADT: 718
LA0112
FairOver: DRAIN
2.3 MI W of LA 399, Beauregard, LA
Built 1957 Load: 32.4 t ADT: 718
LA0110
FairOver: POLEY BRANCH
4.3 M E OF LA27, Beauregard, LA
Built 1961 Load: 32.4 t ADT: 2,079
LA0389
FairOver: WHITE OAK GULLY
1.6 MI E of LA 109, Beauregard, LA
Built 1959 Load: 32.4 t ADT: 439
LA0389
FairOver: COWARDS GULLY
8.29 MI. E OF INT LA109, Beauregard, LA
Built 1959 Load: 32.4 t ADT: 1,858
LA3226
FairOver: COWPEN CREEK
0.2 MI N of US 190, Beauregard, LA
Built 1969 Load: 32.4 t ADT: 1,816
US0080
FairOver: DRAIN
3.7 MI EAST OF LA 154, Bienville, LA
Built 1930 Load: 32.4 t ADT: 1,956
US0371
FairOver: BEARD BRANCH
1.13 MI S OF LA 516, Bienville, LA
Built 1928 Load: 32.4 t ADT: 457
LA0147
FairOver: CYPRESS CREEK
1.38 MI NORTH OF LA 507, Bienville, LA
Built 1968 Load: 32.4 t ADT: 1,988
LA0153
FairOver: NELSON CREEK
6.48 MI NORTH OF LA 155, Bienville, LA
Built 1974 Load: 32.4 t ADT: 1,377
LA0009
FairOver: PEAVINE CREEK
0.8 MI NORTH OF LA 507, Bienville, LA
Built 1951 Load: 32.4 t ADT: 1,163
LA0009
FairOver: LITTLE BEAR CR
4.28 MI NORTH OF LA 507, Bienville, LA
Built 1951 Load: 32.4 t ADT: 1,163
LA0009
FairOver: WILLIAMS CREEK
3.67 MI E OF LA 517, Bienville, LA
Built 1949 Load: 32.4 t ADT: 898
I0020
FairOver: BLACK LAKE CREEK
1.3 MI EAST OF LA 154, Bienville, LA
Built 1964 Load: 32.4 t ADT: 37,514
I0020
FairOver: CREEK
3.8 MI EAST OF LA 154, Bienville, LA
Built 1964 Load: 32.4 t ADT: 37,514
I0020
FairOver: BOGGY BRANCH
4.5 MI EAST OF LA 154, Bienville, LA
Built 1964 Load: 32.4 t ADT: 37,514
I0020
FairOver: SALINE BAYOU
6.4 Mi W of La 507, Bienville, LA
Built 1963 Load: 32.4 t ADT: 37,514
LA0794
FairOver: DRAIN
3.19 MI SOUTH OF LA 793, Bienville, LA
Built 1959 Load: 32.4 t ADT: 114
Bailey Rd
FairOver: BEAR CREEK RELIEF
0.3 MI EAST OF LA 9, Bienville, LA
Built 1986 Load: 32.4 t ADT: 100
US0080
FairOver: DRAIN
2.15 MI EAST OF LA 782-2, Bossier, LA
Built 1927 Load: 32.4 t ADT: 15,627
US0080
FairOver: DRAIN
1.8 MI EAST OF LA 164, Bossier, LA
Built 1930 Load: 32.4 t ADT: 15,627
US0080
FairOver: CANEY BRANCH
2.1 MI EAST OF LA 164, Bossier, LA
Built 1956 Load: 32.4 t ADT: 4,052
US0071
FairOver: LAYS BAYOU
3.4 MI NORTH OF LA 527, Bossier, LA
Built 1948 Load: 32.4 t ADT: 5,237
US0071
FairOver: MACKS BAYOU
1.2 MI NORTH OF LA 612, Bossier, LA
Built 1965 Load: 32.4 t ADT: 13,317
LA0003
FairOver: BLACK BAYOU
1.31 MI NORTH OF LA 162, Bossier, LA
Built 1934 Load: 32.4 t ADT: 5,200
Showing 3,751-3,800 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 |