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
LA0003
FairOver: BRUSHY BRANCH
1.39 MI NORTH OF LA 160, Bossier, LA
Built 1934 Load: 32.4 t ADT: 3,399
LA0003
FairOver: DRAIN
.24 MI NORTH OF LA 2, Bossier, LA
Built 1935 Load: 32.4 t ADT: 2,638
LA0002
FairOver: CREEK
4.88 MI EAST OF US71, Bossier, LA
Built 1955 Load: 32.4 t ADT: 2,059
LA0002
FairOver: EAST BRANCH
7.2 MI EAST OF LA 157E, Bossier, LA
Built 1950 Load: 32.4 t ADT: 1,495
LA0164
FairOver: CREEK
.45 MI SOUTH OF US 80, Bossier, LA
Built 1943 Load: 32.4 t ADT: 3,472
LA0164
FairOver: CREEK
.5 MI SOUTH OF LA 3227, Bossier, LA
Built 1943 Load: 32.4 t ADT: 3,472
I0020
FairOver: DRAIN
.4 MI EAST OVER LA 72, Bossier, LA
Built 1967 Load: 32.4 t ADT: 69,892
I0020
FairOver: DRAIN
10.0 MI EAST OF LA 782-2, Bossier, LA
Built 1975 Load: 32.4 t ADT: 25,379
I0220
FairOver: BAYOU
.7 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 32.4 t ADT: 35,972
I0220
FairOver: BAYOU
.7 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 32.4 t ADT: 35,972
Camp Zion Rd
FairOver: Clarke Bayou
2.5 MI EAST OF LA 157, Bossier, LA
Built 1985 Load: 32.4 t ADT: 500
West Jackson Ave
FairOver: Foxskin Bayou
0.3 MI EAST OF LA 157, Bossier, LA
Built 1985 Load: 32.4 t ADT: 500
US0071
FairOver: DOOLEY BAYOU
.55 MI NORTH OF LA 530, Caddo, LA
Built 1955 Load: 32.4 t ADT: 472
US0071
FairOver: RED BAYOU
.13 MI NORTH OF LA 170, Caddo, LA
Built 1955 Load: 32.4 t ADT: 460
US0171
FairOver: DRAIN
0.1 MI N OF LA 525, Caddo, LA
Built 1953 Load: 32.4 t ADT: 26,330
LA0001
FairOver: CREEK
0.2 MI SOUTH OF LA 538, Caddo, LA
Built 1940 Load: 32.4 t ADT: 4,492
LA0001
FairOver: DRAIN
1.5 MI NORTH OF LA 175, Caddo, LA
Built 1956 Load: 32.4 t ADT: 3,664
LA0001
FairOver: DRAIN
2.15 MI NORTH OF LA 523, Caddo, LA
Built 1968 Load: 32.4 t ADT: 16,955
LA0001
FairOver: DRAIN
.3 MI NORTH OF LA 526, Caddo, LA
Built 1968 Load: 32.4 t ADT: 16,955
LA0001
FairOver: DRAIN
.5 MI NORTH OF LA 511, Caddo, LA
Built 1956 Load: 32.4 t ADT: 24,739
LA0002
FairOver: LOWE CREEK
3.14 MI EAST OF LA 1, Caddo, LA
Built 1948 Load: 32.4 t ADT: 1,590
LA0002
FairOver: CREEK
5.94 MI EAST OF LA 1, Caddo, LA
Built 1948 Load: 32.4 t ADT: 1,382
LA0002
FairOver: CREEK
5.99 MI EAST OF LA 1, Caddo, LA
Built 1948 Load: 32.4 t ADT: 1,382
LA0173
FairOver: LOGAN BAYOU
5.7 MI EAST OF LA 3094, Caddo, LA
Built 1963 Load: 32.4 t ADT: 15,302
LA0511
FairOver: CREEK
.03 MI EAST OF US 171, Caddo, LA
Built 1963 Load: 32.4 t ADT: 23,737
LA3132
FairOver: DRAIN
2.0 MI. E. OF LA 511, Caddo, LA
Built 1984 Load: 32.4 t ADT: 53,886
I0020
FairOver: DRAIN
.1 MI WEST OF LA 169, Caddo, LA
Built 1991 Load: 32.4 t ADT: 98,318
I0020
FairOver: CREEK
.8 MI EAST OF LA 169, Caddo, LA
Built 1990 Load: 32.4 t ADT: 98,318
I0049
FairOver: DRAIN
1.8 M S OF LA 526 INTR, Caddo, LA
Built 1989 Load: 32.4 t ADT: 60,171
LA0526
FairOver: WEST FORK GILMER BAYOU
1.52 MI S OF LA 511, Caddo, LA
Built 1977 Load: 32.4 t ADT: 16,067
LA0526
FairOver: DRAIN
2.42 MI SOUTH OF I-20, Caddo, LA
Built 1977 Load: 32.4 t ADT: 16,067
LA0526
FairOver: DRAIN
3.42 MI SOUTH OF I-20, Caddo, LA
Built 1977 Load: 32.4 t ADT: 17,579
LA0526
FairOver: DRAIN
3.82 MI SOUTH OF I-20, Caddo, LA
Built 1977 Load: 32.4 t ADT: 17,579
Wallace Lake Rd
FairOver: DRAIN
1.0M SOUTH FLNOY-LUC RD, Caddo, LA
Built 1992 Load: 32.4 t ADT: 2,434
KINGSTON DR
FairOver: BROOKWOOD DITCH
0.3 MI. NO. OF LA 52, Caddo, LA
Built 1980 Load: 32.4 t ADT: 7,686
MT ZION
FairOver: BRUSH BAYOU
2.1 MI EAST OF US 171, Caddo, LA
Built 1988 Load: 32.4 t ADT: 6,960
EAST KINGS HWY
FairOver: DRAIN - C-6
0.1 M SOUTH OF LA 3132, Caddo, LA
Built 1990 Load: 32.4 t ADT: 3,100
W. 62nd ST
FairOver: COURTESY LANE DITCH
0.01 MI E OF HWY 171, Caddo, LA
Built 1969 Load: 32.4 t ADT: 6,000
ALEXANDER AVE
FairOver: BAYOU PIERRE
0.5 M SOUTH OF KINGS HWY, Caddo, LA
Built 1990 Load: 32.4 t ADT: 2,242
KINGS HWY
FairOver: BAYOU PIERRE
1.2 MI WEST OF LA 1, Caddo, LA
Built 1989 Load: 32.4 t ADT: 21,856
ABBIE STREET
FairOver: TRIB. CROSS BAYOU
1.1 MI NORTH OF I-20, Caddo, LA
Built 1986 Load: 32.4 t ADT: 200
ELDER STREET
FairOver: TRIBUTARY TO CROSS BAYOU
0.35 MI. S OF US 17, Caddo, LA
Built 1956 Load: 32.4 t ADT: 850
LEGARDY STREET
FairOver: COOPER ROAD DITCH
0.1 MI NORTH OF LA 3094, Caddo, LA
Built 1986 Load: 32.4 t ADT: 1,352
JONES MABRY ROAD
FairOver: COOPER ROAD DITCH
0.3 MI. NORTH OF LA 3194, Caddo, LA
Built 1984 Load: 32.4 t ADT: 580
Lay St
FairOver: RED BAYOU
DOWNTOWN GILLIAM, Caddo, LA
Built 1937 Load: 32.4 t ADT: 22
US0090
FairOver: GUM GULLY
1.0 MI E of LA 109, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 3,645
US0090
FairOver: DRAIN
2.9 MI E OF LA 3063, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 2,509
US0090
FairOver: BAYOU
4.6 MI EAST OF LA 3063, Calcasieu, LA
Built 1954 Load: 32.4 t ADT: 2,509
US0090
FairOver: DRAIN
0.6 MI EAST OF LA 27, Calcasieu, LA
Built 1955 Load: 32.4 t ADT: 13,695
US0090
FairOver: MAPLE FORK
1.8 MI EAST OF LA 27, Calcasieu, LA
Built 1932 Load: 32.4 t ADT: 13,695
Showing 3,801-3,850 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 |