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
Blue Lake Rd
FairOver: TANNER CREEK
4.4 MILES SE OF LA 497, Rapides, LA
Built 1997 Load: 32.4 t ADT: 180
Blue Lake Rd
FairOver: HURRICANE CREEK
0.8 MILES EAST OF LA 497, Rapides, LA
Built 2001 Load: 32.4 t ADT: 700
Bert Paul Rd
FairOver: SLASH BAYOU
0.3 MI. WEST OF LA 115, Rapides, LA
Built 1985 Load: 32.4 t ADT: 160
LA0155
FairOver: DRAIN
6.61 MI EAST OF US 71, Red River, LA
Built 1948 Load: 32.4 t ADT: 1,130
LA0134
FairOver: HEGWOOD BAYOU
1.7 MI E MOREHOUSE PAR LN, Richland, LA
Built 2010 Load: 32.4 t ADT: 473
LA0854
FairOver: CREEK
1.61 MI E OF LA 183, Richland, LA
Built 2016 Load: 32.4 t ADT: 529
US0080
FairOver: DRAIN
3.3 MI EAST OF LA 609, Richland, LA
Built 1953 Load: 32.4 t ADT: 1,451
US0080
FairOver: DRAIN
3.8 MI EAST OF LA 609, Richland, LA
Built 1930 Load: 32.4 t ADT: 1,451
LA0015
FairOver: DRAIN
1.77 MI WEST OF LA 137, Richland, LA
Built 1938 Load: 32.4 t ADT: 2,198
LA0015
FairOver: CANEY BAYOU
2.30 MI WEST OF LA 137, Richland, LA
Built 1938 Load: 32.4 t ADT: 2,198
LA0017
FairOver: BOGZACK CREEK
.3 MI SOUTH OF LA 877, Richland, LA
Built 1971 Load: 32.4 t ADT: 3,890
LA0137
FairOver: CREEK
5.0 MI NORTH OF US 80, Richland, LA
Built 1971 Load: 32.4 t ADT: 1,954
LA0183
FairOver: CREEK
3.1 MI NORTH OF LA 854, Richland, LA
Built 1953 Load: 32.4 t ADT: 1,098
LA0183
FairOver: CREEK
7.4 MI NORTH OF LA 854, Richland, LA
Built 1953 Load: 32.4 t ADT: 969
I0020
FairOver: DRAIN
.24 MI EAST OF LA 133, Richland, LA
Built 1968 Load: 32.4 t ADT: 38,890
I0020
FairOver: DRAIN
5.3 MI EAST OF LA 133, Richland, LA
Built 1968 Load: 32.4 t ADT: 38,890
I0020
FairOver: BURNS BAYOU
1.5 MI EAST OF LA 137, Richland, LA
Built 1969 Load: 32.4 t ADT: 38,890
I0020
FairOver: DRAIN
2.2 MI EAST OF LA 137, Richland, LA
Built 1969 Load: 32.4 t ADT: 38,890
I0020
FairOver: COW BAYOU
.3 MI EAST OF LA 583, Richland, LA
Built 1969 Load: 32.4 t ADT: 38,890
I0020
FairOver: HURRICANE BAYOU
3.2 MI EAST OF LA 583, Richland, LA
Built 1969 Load: 32.4 t ADT: 38,890
I0020
FairOver: DRAINAGE
3.6 MI EAST OF LA 583, Richland, LA
Built 1971 Load: 32.4 t ADT: 38,890
I0020
FairOver: ASH SLOUGH
1.0 MI EAST OF LA 609, Richland, LA
Built 1970 Load: 32.4 t ADT: 38,890
LA0856
FairOver: DRAIN
LA0856, Richland, LA
Built 1985 Load: 32.4 t ADT: 1,064
CHINA GROVE RD
FairOver: MUDDY BAYOU
0.1 MI E of LA 135, Richland, LA
Built 1996 Load: 32.4 t ADT: 40
CRAWFORD RD
FairOver: SHIERS CREEK
1.2 MI N of LA 856, Richland, LA
Built 1996 Load: 32.4 t ADT: 360
BULLY SMITH RD
FairOver: CREEK
2.2 MI SE of LA 584, Richland, LA
Built 1994 Load: 32.4 t ADT: 70
US0171
FairOver: CASTOR BAYOU
3.83 MI. NORTH OF LA 483, Sabine, LA
Built 1990 Load: 32.4 t ADT: 4,249
LA0175
FairOver: CREEK
6.28 MI. NORTH OF LA 1216, Sabine, LA
Built 1946 Load: 32.4 t ADT: 1,786
LA0175
FairOver: CREEK
1.05 M N OF N JCT LA 175, Sabine, LA
Built 1950 Load: 32.4 t ADT: 1,587
LA0175
FairOver: CREEK
3.03 M N OF N JCT. LA 120, Sabine, LA
Built 1949 Load: 32.4 t ADT: 1,587
LA0175
FairOver: CREEK
0.95 MI. NORTH OF LA 174, Sabine, LA
Built 1934 Load: 32.4 t ADT: 1,900
LA0174
FairOver: CREEK
2.7 MI EAST OF LA 191, Sabine, LA
Built 1957 Load: 32.4 t ADT: 1,064
LA0483
FairOver: CREEK
2.7 MI NORTH OF US 171, Sabine, LA
Built 1924 Load: 32.4 t ADT: 525
LA0191
FairOver: MACDONALD BAYOU
1.0 MI NORTH OF LA 174, Sabine, LA
Built 1959 Load: 32.4 t ADT: 610
LA0191
FairOver: CREEK
1.1 MI NORTH OF LA 174, Sabine, LA
Built 1959 Load: 32.4 t ADT: 610
LA3229
FairOver: CREEK
.55 MI SOUTH OF LA482, Sabine, LA
Built 1961 Load: 32.4 t ADT: 543
LA3229
FairOver: CREEK
1.73 MI SOUTH OF LA 482, Sabine, LA
Built 1961 Load: 32.4 t ADT: 543
LA3229
FairOver: UNNAMED CREEK
3.33 MI SOUTH OF LA 482, Sabine, LA
Built 1961 Load: 32.4 t ADT: 543
GEORGIA AVE
FairOver: SAN JOSE CREEK TRIB.
0.04 MI. WEST OF US 171, Sabine, LA
Built 1987 Load: 32.4 t ADT: 5,100
LA0039
FairOver: DRAIN CANAL
2.37 MI NORTH OF LA 36, St. Bernard, LA
Built 1967 Load: 32.4 t ADT: 47,739
I0310
FairOver: DRAIN CANAL
0.8 MILES SOUTH OF HALES, St. Charles, LA
Built 1984 Load: 32.4 t ADT: 40,204
LA1046
FairOver: LITTLE NATALBANY
0.1 M SE OF LA 1046, St. Helena, LA
Built 1958 Load: 32.4 t ADT: 572
I0055
FairOver: DRAIN PIPE XING
NORTH OF US 51 & I55 EXIT, St. John the Baptist, LA
Built 1960 Load: 32.4 t ADT: 4,107
I0055
FairOver: DRAIN PIPE XING
2.0 M N - I55 & US51 EXIT, St. John the Baptist, LA
Built 1960 Load: 32.4 t ADT: 4,107
I0055
FairOver: DRAIN PIPE XING
2.4 M N - I55 & US51 EXIT, St. John the Baptist, LA
Built 1960 Load: 32.4 t ADT: 4,107
I0055
FairOver: DRAIN PIPE XING
3 MI N - I55 & US 51 JCT, St. John the Baptist, LA
Built 1960 Load: 32.4 t ADT: 4,107
I0055
FairOver: DRAIN PIPE XING
M N - US51 & I55 JCT, St. John the Baptist, LA
Built 1960 Load: 32.4 t ADT: 4,107
I0055
FairOver: DRAIN PIPE XING
7.6 M N - I55 & US51 JCT, St. John the Baptist, LA
Built 1960 Load: 32.4 t ADT: 4,107
I0055
FairOver: DRAINAGE PIPE XING
2.0 M N -I55 & US51 EXIT, St. John the Baptist, LA
Built 1960 Load: 32.4 t ADT: 4,107
US0071
FairOver: BAYOU PETITE PRAIRIE
15.69 MI NORTH OF US 190, St. Landry, LA
Built 1935 Load: 32.4 t ADT: 2,845
Showing 4,151-4,200 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 |