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
POTTER RD.
Structurally DeficientOver: THORNWELL DRAINAGE CANAL
1.1 MI N of LA14, Jefferson Davis, LA
Built 1972 Load: 10.7 t ADT: 30
LA0146
Structurally DeficientOver: COLEMAN CREEK
1.0 MI WEST OF WEST INT L, Claiborne, LA
Built 1967 Load: 10.9 t ADT: 1,360
Spillway Rd.
Structurally DeficientOver: CHICOT BAYOU
2.10M SOUTH OF LA 106, Evangeline, LA
Built 1970 Load: 10.9 t ADT: 90
LA0302
Structurally DeficientOver: BAYOU BARATARIA
.07 MI EAST OF LA 3257, Jefferson, LA
Built 1948 Load: 10.9 t ADT: 1,254
TURF GRASS RD.
Structurally DeficientOver: GULLY
0.4 MI S OF CORMIER V RD, Jefferson Davis, LA
Built 1980 Load: 10.9 t ADT: 50
HILL AVE
Structurally DeficientOver: DRAINAGE CANAL HILL AVE.
.19 MI. W. INT. 005, Morehouse, LA
Built 1968 Load: 10.9 t ADT: 150
LA0933
Structurally DeficientOver: HENDERSON BAYOU
0.9 M E of LA 44, Ascension, LA
Built 1969 Load: 11.0 t ADT: 6,131
LA0422
Structurally DeficientOver: STREAM NO NAME
1.9 Mi E of LA 19, East Feliciana, LA
Built 1969 Load: 11.0 t ADT: 153
LA1026
Structurally DeficientOver: CREEK
1.6 M SW OF LA 16, Livingston, LA
Built 1961 Load: 11.0 t ADT: 8,669
LA0120
Structurally DeficientOver: BAYOU SCIE
3.55 MI EAST OF US 171, Sabine, LA
Built 1960 Load: 11.0 t ADT: 235
LA0010
Structurally DeficientOver: STATE CANAL
1.50 MI WEST OF LA 105, St. Landry, LA
Built 1958 Load: 11.0 t ADT: 708
LA1232
Structurally DeficientOver: CREEK
4.64 MI EAST OF LA 501, Winn, LA
Built 1960 Load: 11.0 t ADT: 178
LA3116
Structurally DeficientOver: CREEK
0.2 mi N. of LA 3123, Acadia, LA
Built 1953 Load: 11.3 t ADT: 654
US0080
Structurally DeficientOver: SLOUGH BRIDGE
0.6 MI EAST OF LA 154, Bienville, LA
Built 1953 Load: 11.3 t ADT: 780
LA0516
Structurally DeficientOver: POLAND BRANCH
4.4 MI EAST OF LA 792, Bienville, LA
Built 1961 Load: 11.3 t ADT: 177
CARL MCCALL RD.
Structurally DeficientOver: PORTIE BAYOU
0.5 MI. N. OF LA 82, Cameron, LA
Built 1967 Load: 11.3 t ADT: 156
LA0671
Structurally DeficientOver: BAYOU TECHE JEAN.
0.16 MI EAST OF LA 182, Iberia, LA
Built 1944 Load: 11.3 t ADT: 496
WEST RACCA ROAD
Structurally DeficientOver: EAST GRAND MARAIS DITCH
1.7 MI W of LA 26, Jefferson Davis, LA
Built 1979 Load: 11.3 t ADT: 50
HARRISON/COLLIER
Structurally DeficientOver: CONCRETE CANAL
W1 BLOCK FROM POWELL AVE., Ouachita, LA
Built 1961 Load: 11.3 t
MARTIN LN
Structurally DeficientOver: DRAINAGE CANAL
0.2 MI SOUTH OF HWY 23, Plaquemines, LA
Built 1987 Load: 11.3 t
LA0474
Structurally DeficientOver: MIDKIFF CREEK
7.57 MI EAST OF LA 191, Sabine, LA
Built 1958 Load: 11.3 t ADT: 1,105
Beach Rd
Structurally DeficientOver: CREEK
.9 MI SW OF JCT 445, Tangipahoa, LA
Built 1960 Load: 11.3 t ADT: 16
JEAN ST
Structurally DeficientOver: CASTOR BAYOU TRIB.
1.2 MILES WEST OF US 171, Vernon, LA
Built 1970 Load: 11.3 t ADT: 3,600
CLYDE SMITH RD
Structurally DeficientOver: CREEK
0.2 MI. N. OF HWY. 4, Washington, LA
Built 1970 Load: 11.3 t ADT: 315
LA0159
Structurally DeficientOver: CYPRESS CR RELIEF
3.5 MI NORTH OF LA 615, Webster, LA
Built 1966 Load: 11.3 t ADT: 866
Como Rd
Structurally DeficientOver: POLLY CREEK
2.2 MI.SW LA66, LA968 JCT, West Feliciana, LA
Built 1982 Load: 11.3 t ADT: 30
LINWOOD AVE
Structurally DeficientOver: KCS,MOPAC & PAC RRS
0.1 MI. SO. OF U.S. 80, Caddo, LA
Built 1950 Load: 11.7 t ADT: 22,308
LA0134
Structurally DeficientOver: MILL BAYOU
2.0 MI EAST OF LA 136, Ouachita, LA
Built 1957 Load: 11.7 t ADT: 3,462
LAKESIDE LOOP
Structurally DeficientOver: YOCUM CREEK
APP. 2.75 M. W. OF LA 191, Sabine, LA
Built 1967 Load: 11.7 t ADT: 110
J. W. Riles Rd
Structurally DeficientOver: DEER LICK CR.
1.3 MI. SW. OF LA 38, Washington, LA
Built 1983 Load: 11.7 t ADT: 415
LA0506
Structurally DeficientOver: CASTOR RELIEF
7.3 MI WEST OF US 165, Caldwell, LA
Built 1931 Load: 11.8 t ADT: 306
LA0506
Structurally DeficientOver: CASTOR RELIEF
6.8 MI WEST OF US 165, Caldwell, LA
Built 1931 Load: 11.8 t ADT: 306
Par Rd 4-100
Structurally DeficientOver: PALMERS BRANCH
0.7 MI. N CLINT-WILSON RD, East Feliciana, LA
Built 1958 Load: 11.8 t ADT: 362
LA0485
Structurally DeficientOver: LITTLE RIVER
1.53 MI N OF JCT LA 1222, Natchitoches, LA
Built 1956 Load: 11.8 t ADT: 508
RIVER RD
Structurally DeficientOver: PRAIRION BAYOU
6.22 MI SE of LA 557, Ouachita, LA
Built 1968 Load: 11.8 t ADT: 75
HULL GEORGE RD
Structurally DeficientOver: ROGERS CREEK
2 MI SE OKALOOSA, Ouachita, LA
Built 1960 Load: 11.8 t ADT: 56
Hinson Rd
Structurally DeficientOver: CANAL
1.5 M E/SE OF I-12&LA 124, Tangipahoa, LA
Built 1975 Load: 11.8 t ADT: 4
LA0501
Structurally DeficientOver: MEDENHAUSE CREEK
1.62 MI SOUTH OF LA 156, Winn, LA
Built 1975 Load: 11.8 t ADT: 1,026
LA0082
Structurally DeficientOver: SUPERIOR CANAL
27.0 MI E OF LA 27, Cameron, LA
Built 1956 Load: 12.0 t ADT: 2,899
Goodwood Blvd
Structurally DeficientOver: JONES CREEK
1.5 MI E OF US 61, East Baton Rouge, LA
Built 1960 Load: 12.0 t ADT: 10,543
LA0472
Structurally DeficientOver: INDIAN CREEK
5.02 MI EAST OF US 167, Grant, LA
Built 1938 Load: 12.0 t ADT: 88
US0080
Structurally DeficientOver: BAYOU MACON
.7 MI EAST OF LA 17, Madison, LA
Built 1955 Load: 12.0 t ADT: 1,451
LA0631
Structurally DeficientOver: DRAIN CANAL
.6 MI EAST OF LA 306, St. Charles, LA
Built 1962 Load: 12.0 t ADT: 1,544
LA0324
Structurally DeficientOver: BAYOU TECHE
0.1 MI WEST OF LA 326, St. Mary, LA
Built 1941 Load: 12.0 t ADT: 883
LA0308
Structurally DeficientOver: HALWAY CANAL
4.3 M N of LA 70, Assumption, LA
Built 1969 Load: 12.3 t ADT: 1,825
LA0162
Structurally DeficientOver: BLACK BAYOU
00.76 MI EAST OF LA 3, Bossier, LA
Built 1967 Load: 12.3 t ADT: 4,595
LA0109
Structurally DeficientOver: GULLY
0.1 MI S OF LA 12, Calcasieu, LA
Built 1957 Load: 12.3 t ADT: 1,749
LA0120
Structurally DeficientOver: BAYOU SCIE RELIEF 3
3.64 MI EAST OF US 171, Sabine, LA
Built 1960 Load: 12.3 t ADT: 235
LA0121
Structurally DeficientOver: CREEK
0.28 MI. SW. OF LA 461, Rapides, LA
Built 1973 Load: 12.4 t ADT: 1,932
H H Wilson Rd
Structurally DeficientOver: DRAINAGE BAYOU
1.2 M NW OF PORT VINCENT, Ascension, LA
Built 1989 Load: 12.5 t ADT: 10
Showing 12,351-12,400 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 |