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
LA0979
PoorOver: FALSE RIVER CANAL
0.8 M W of LA 978, Pointe Coupee, LA
Built 1980 Load: 25.3 t ADT: 748
I0055-S
PoorOver: PASS MANCHAC
Pass Manchac, Tangipahoa, LA
Built 1957 Load: 25.3 t ADT: 4,107
LA0521
PoorOver: INDIAN CREEK
.4 MI NORTH OF LA 2 ALT, Claiborne, LA
Built 1968 Load: 25.4 t ADT: 129
LA0063
PoorOver: HUNTERS BAYOU
LA0063, East Feliciana, LA
Built 1957 Load: 25.4 t ADT: 1,584
Boeneke Rd
PoorOver: BLUFF CREEK
0.9 M E of LA 63, East Feliciana, LA
Built 2003 Load: 25.4 t ADT: 26
BEBEE ROAD
PoorOver: GULLY
0.6 MI N of LA 101, Jefferson Davis, LA
Built 1971 Load: 25.4 t ADT: 200
US0080
PoorOver: PANOLA BAYOU
13.4 MI EAST OF LA 577, Madison, LA
Built 1955 Load: 25.4 t ADT: 1,558
LA0153
PoorOver: DRAIN
5.08 MI. N OF INT LA9, Natchitoches, LA
Built 1974 Load: 25.4 t ADT: 609
LA0462
PoorOver: STEEP GULLY BRANCH
1.25 MI. S OF LA113, Rapides, LA
Built 1940 Load: 25.4 t ADT: 77
LA0062
PoorOver: DRAIN
0.1 M S OF LA 438, Washington, LA
Built 1959 Load: 25.4 t ADT: 1,205
US0165
PoorOver: YOUNGS BAYOU
.7 MI NORTH OF LA 15, Ouachita, LA
Built 1966 Load: 25.6 t ADT: 29,759
TERRY PKWY
PoorOver: INDUSTRY CANAL
0.1MI.N.OF BELLCHASE, Jefferson, LA
Built 1974 Load: 25.9 t
LA0039
PoorOver: N O P B RR(CLAIBORNE AVE
.6 MI EAST OF LA 3021, Orleans, LA
Built 1949 Load: 25.9 t ADT: 36,993
LA0389
PoorOver: BRUSHY CREEK
8.8 MI W of LA 109, Beauregard, LA
Built 1967 Load: 26.1 t ADT: 442
LA1058
PoorOver: DRAIN
0.9 M N OF LA 1059, Tangipahoa, LA
Built 1951 Load: 26.1 t ADT: 899
US0190
PoorOver: WEST CALCASIEU RIVER REL
7.4 MI E OF INT LA 113, Allen, LA
Built 1980 Load: 26.2 t ADT: 3,923
US0080
PoorOver: CLARKE BAYOU
0.2 MI EAST OF LA 164, Bossier, LA
Built 1930 Load: 26.2 t ADT: 2,376
LA0820
PoorOver: STOWE CREEK
.63 MI SOUTH OF LA 33, Lincoln, LA
Built 1979 Load: 26.2 t ADT: 2,230
ALMONASTER AVE
PoorOver: FLORIDA AVE
0.5 MI N. OF GALVEZ, Orleans, LA
Built 1960 Load: 26.2 t
Harvey Lavigne
PoorOver: CREEK
1.80 M E of LA 445, Tangipahoa, LA
Built 1970 Load: 26.2 t ADT: 681
LA0012
PoorOver: SABINE RIVER
.56 MI WEST OF LA 109, Calcasieu, LA
Built 1938 Load: 26.3 t ADT: 3,365
LA0027
PoorOver: D'INDE BAYOU
1.2 MI S of US 90, Calcasieu, LA
Built 1960 Load: 26.3 t ADT: 14,973
LA0513
PoorOver: TEN MILE BAYOU
2.9 MI NORTH OF LA 483, De Soto, LA
Built 1969 Load: 26.3 t ADT: 243
LA0513
PoorOver: TEN MILE B RELIEF
3.0 MI NORTH OF LA 483, De Soto, LA
Built 1969 Load: 26.3 t ADT: 243
LA0507
PoorOver: EDWARDS MILL CREEK
1.0 MI W JCT LA 9, Bienville, LA
Built 1984 Load: 26.6 t ADT: 396
Van Buren St
PoorOver: CORPORATION CANAL
0.15 MI E OF LA 30, East Baton Rouge, LA
Built 1955 Load: 26.6 t ADT: 350
SOUTH MAIN ROAD
PoorOver: CREEK
1.6 MI N of LA 1126, Jefferson Davis, LA
Built 1970 Load: 26.6 t ADT: 150
US0167
PoorOver: BAYOU D'ARBONNE RELIEF
1 Mi. S. of LA 151, Lincoln, LA
Built 1952 Load: 26.6 t ADT: 2,487
LA0009
PoorOver: CHOCTAW CREEK
2.26 MI. NORTH OF LA 479, Natchitoches, LA
Built 1977 Load: 26.6 t ADT: 282
Harrisonburg
PoorOver: NANTACHES CREEK
3.84 MI. EAST OF US 71, Winn, LA
Built 1979 Load: 26.6 t ADT: 179
BELL OIL RD
PoorOver: BLUE BAYOU
1.6 MI WEST OF LA 26, Allen, LA
Built 1974 Load: 26.9 t ADT: 77
Lemon Rd
PoorOver: DRAINAGE BAYOU
1.0 M E of LA 19, East Baton Rouge, LA
Built 1965 Load: 26.9 t ADT: 542
Rue De Kajun
PoorOver: BAYOU
.40 MI. WEST LA 70, Assumption, LA
Built 1999 Load: 27.2 t ADT: 192
LA0014
PoorOver: BAYOU
9.2 MI EAST OF LA 27, Calcasieu, LA
Built 1966 Load: 27.2 t ADT: 1,363
LA0126
PoorOver: BEECH CREEK
2.1 MI WEST OF LA 3239, Caldwell, LA
Built 1970 Load: 27.2 t ADT: 570
LEONARD LITTLE RD.
PoorOver: CANAL
0.08 MI. E. OF INT. LA 27, Cameron, LA
Built 1964 Load: 27.2 t ADT: 8
LA 124
PoorOver: LARTO LAKE BAYOU
27.4 MI S OF US 84, Catahoula, LA
Built 1958 Load: 27.2 t ADT: 514
LA0002
PoorOver: BLACK BAYOU
1.0 MI EAST OF LA 521, Claiborne, LA
Built 1962 Load: 27.2 t ADT: 817
Gibbens Rd
PoorOver: CYPRESS BAYOU
0.4 Mi. S of LA 423, East Baton Rouge, LA
Built 1970 Load: 27.2 t ADT: 2,125
Palmetto St OnRamp
PoorOver: KCS RR
2.4 MI EAST OF LA 3046, Orleans, LA
Built 1960 Load: 27.2 t ADT: 47,738
WPA Rd
PoorOver: BAYOU BOEUF
0.1 Mi. E. of La 182, St. Landry, LA
Built 1975 Load: 27.2 t ADT: 750
LA0151
PoorOver: STOWE CREEK
.14 MI EAST OF LA 33, Union, LA
Built 1961 Load: 27.2 t ADT: 527
LA0117
PoorOver: BLACKLAND BRANCH
4.14 MI NORTH OF LA 28, Vernon, LA
Built 1954 Load: 27.2 t ADT: 1,513
LA0531
PoorOver: PARMERS CREEK
2.2 MI NORTH OF LA 792, Webster, LA
Built 1967 Load: 27.2 t ADT: 236
Jackson Rd
PoorOver: BEAVER CREEK
3.9 MI. WEST OF PRID, East Baton Rouge, LA
Built 1971 Load: 27.5 t ADT: 1,379
John Lewis Rd
PoorOver: Little Valley Bayou
0.3 Mi. E. of La 83, Iberia, LA
Built 1975 Load: 27.5 t ADT: 422
LA0118
PoorOver: WEST TORO CREEK
3.04 MILES EAST OF US 171, Sabine, LA
Built 1985 Load: 27.5 t ADT: 1,471
I0020
PoorOver: BEAR CREEK
.54 MI EAST OF US 80, Bienville, LA
Built 1964 Load: 27.9 t ADT: 37,514
I0020
PoorOver: M.P. RR
.6 MI EAST OF US 80, Caddo, LA
Built 1965 Load: 27.9 t ADT: 98,318
LA0002
PoorOver: MIDDLEFORK BAYOU DARBONN
2.8 MI EAST OF LA 152, Claiborne, LA
Built 1949 Load: 28.1 t ADT: 990
Showing 12,001-12,050 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 |