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
LA0389
FairOver: CREEK
3.25 MI. E OF INT LA109, Beauregard, LA
Built 1959 Load: 23.6 t ADT: 1,794
LA0389
FairOver: BEAR HEAD CREEK
3.0 MI. E. OF LA 109, Beauregard, LA
Built 1959 Load: 23.6 t ADT: 439
LA0389
FairOver: LITTLE CREEK
4.6 MI. E. OF LA 109, Beauregard, LA
Built 1959 Load: 23.6 t ADT: 439
LA0109
FairOver: WINDMAM CREEK
.9 MI. S OF INT LA389, Beauregard, LA
Built 1962 Load: 23.6 t ADT: 1,749
LA0109
FairOver: BUXTON MARSH
6.3 MI. N. OF LA 389, Beauregard, LA
Built 1963 Load: 23.6 t ADT: 303
LA0109
FairOver: MARSH
7.2 MI. N. OF LA 389, Beauregard, LA
Built 1963 Load: 23.6 t ADT: 303
LA0109
FairOver: MARSH
7.5 MI. N. OF LA 389, Beauregard, LA
Built 1963 Load: 23.6 t ADT: 303
LA0109
FairOver: BEARHEAD CREEK
7.6 MI. N. Of LA 389, Beauregard, LA
Built 1963 Load: 23.6 t ADT: 303
LA0157
FairOver: FLAT BRANCH
2.65 MI NORTH OF LA 160, Bossier, LA
Built 1962 Load: 23.6 t ADT: 176
LA0157
FairOver: CYPRESS BAYOU
2.82 MI NORTH OF LA 160, Bossier, LA
Built 1962 Load: 23.6 t ADT: 176
LA0157
FairOver: CYPRESS BAYOU RLF
3.16 MI NORTH OF LA 160, Bossier, LA
Built 1962 Load: 23.6 t ADT: 176
Sligo Rd
FairOver: Horseshoe Creek
2.5 MILES WEST OF LA 157, Bossier, LA
Built 1986 Load: 23.6 t ADT: 4,000
LA3032
FairOver: RED RIVER,FANT/PARKWAY
1.52 MI EAST OF LA1, Caddo, LA
Built 1972 Load: 23.6 t ADT: 26,979
I0020
FairOver: KCS RR
.1 MI EAST OF LA 1, Caddo, LA
Built 1965 Load: 23.6 t ADT: 87,567
I0010
FairOver: DRAIN
1.7 MI EAST OF LA 3256, Calcasieu, LA
Built 1964 Load: 23.6 t ADT: 2,284
LA3020
FairOver: ANTOINE GULLY
0.5 MI. W OF LA 397, Calcasieu, LA
Built 1959 Load: 23.6 t ADT: 3,532
LA3020
FairOver: KAYOUCHE COULEE
2.7 MI. W. OF LA 397, Calcasieu, LA
Built 1959 Load: 23.6 t ADT: 3,532
LA0534
FairOver: FLAT LICK BAYOU
2.81 MI SOUTH OF LA 2, Claiborne, LA
Built 1962 Load: 23.6 t ADT: 42
LA0172
FairOver: BUSHNECK BAYOU
2.6 MI WEST OF LA 169, De Soto, LA
Built 1958 Load: 23.6 t ADT: 1,316
LA0005
FairOver: RAMBIN BAYOU
2.08 MI EAST OF LA 171, De Soto, LA
Built 1962 Load: 23.6 t ADT: 2,226
LA0191
FairOver: B GRAND CANE RELIEF
4.74 MI NORTH OF LA 763, De Soto, LA
Built 1958 Load: 23.6 t ADT: 1,093
LA0191
FairOver: BAYOU GRAND CANE
4.82 MI NORTH OF LA 763, De Soto, LA
Built 1958 Load: 23.6 t ADT: 1,093
LA0481
FairOver: CLEMENT CREEK
9.91 MI NORTH OF LA 191, De Soto, LA
Built 1962 Load: 23.6 t ADT: 469
LA0512
FairOver: SAN PATRICIO BAYOU
2.21 MI EAST OF LA 171, De Soto, LA
Built 1957 Load: 23.6 t ADT: 215
LA0346
FairOver: RAMBIN BAYOU
6.05 MI EAST OF LA 175, De Soto, LA
Built 1962 Load: 23.6 t ADT: 275
LA0191
FairOver: COW BAYOU RELIEF
1.92 MI NORTH OF LA 481, De Soto, LA
Built 1960 Load: 23.6 t ADT: 769
LA0191
FairOver: CLEMENT CREEK
7.56 MI NORTH OF LA 481, De Soto, LA
Built 1958 Load: 23.6 t ADT: 769
US0190
FairOver: LIVELY BAYOU
US0190, East Baton Rouge, LA
Built 1961 Load: 23.6 t ADT: 17,263
LA0010
FairOver: LITTLE RIVER
LA0010, East Feliciana, LA
Built 1963 Load: 23.6 t ADT: 2,534
LA0412
FairOver: DOYLE BAYOU
LA0412, East Feliciana, LA
Built 1958 Load: 23.6 t ADT: 1,710
LA0412
FairOver: REDWOOD CREEK
LA0412, East Feliciana, LA
Built 1958 Load: 23.6 t ADT: 1,710
LA0029
FairOver: BAYOU PETITE PASS
2.5 MI N. of LA 363, Evangeline, LA
Built 1961 Load: 23.6 t ADT: 2,163
LA0029
FairOver: COULEE TEAL
5.3 Mi N of La 363, Evangeline, LA
Built 1961 Load: 23.6 t ADT: 2,163
LA0106
FairOver: BAYOU COCODRIE
0.9 MI East of LA 115, Evangeline, LA
Built 1962 Load: 23.6 t ADT: 1,069
LA 3277
FairOver: COULEE VALENTINE
0.4 MI South Of LA 374, Evangeline, LA
Built 1959 Load: 23.6 t ADT: 759
LA 3277
FairOver: BAYOU DURALDE
1.2 Miles North of LA 374, Evangeline, LA
Built 1959 Load: 23.6 t ADT: 759
LA1161
FairOver: BAYOU JOE MARCEL
5.56 MI NORTH OF LA 104, Evangeline, LA
Built 1962 Load: 23.6 t ADT: 2,821
LA0876
FairOver: BRUSHY BAYOU
2.0 MI SOUTH OF LA 128, Franklin, LA
Built 1962 Load: 23.6 t ADT: 41
LA0472
FairOver: BIG BEAR CREEK RELIEF
7.97 MI EAST OF US 167, Grant, LA
Built 1960 Load: 23.6 t ADT: 88
LA1241
FairOver: HUDSON CREEK
3.0 MI EAST OF US 71, Grant, LA
Built 1958 Load: 23.6 t ADT: 2,048
LA1241
FairOver: FRAZIER CREEK
3.14 MI EAST OF US 71, Grant, LA
Built 1958 Load: 23.6 t ADT: 2,048
LA0086
FairOver: BAYOU TECHE
0.1 MI NE of LA 182, Iberia, LA
Built 1941 Load: 23.6 t ADT: 3,834
LA0675
FairOver: ARMENCO CANAL
0.4 MI EAST OF US 90, Iberia, LA
Built 1960 Load: 23.6 t ADT: 8,715
LA0382
FairOver: CHENE BAYOU
3.5 MI N OF LA 380, Jefferson Davis, LA
Built 1968 Load: 23.6 t ADT: 527
LA0099
FairOver: BAYOU
3.2 MI N LA 102, Jefferson Davis, LA
Built 1962 Load: 23.6 t ADT: 1,405
LA0099
FairOver: BAYOU ALLIGATOR
2.9 MI S of US 190, Jefferson Davis, LA
Built 1962 Load: 23.6 t ADT: 1,405
Le Violon Rd.
FairOver: ILE DES CANNES COULEE
1.5 Mi NW of LA 342, Lafayette, LA
Built 1977 Load: 23.6 t ADT: 2,363
LA0124
FairOver: CASTOR CREEK
1.7 MI NORTH OF LA 125, LaSalle, LA
Built 1964 Load: 23.6 t ADT: 1,348
LA0124
FairOver: CHICKASAW CREEK
.5 MI EAST OF LA 506, LaSalle, LA
Built 1959 Load: 23.6 t ADT: 1,838
LA0126
FairOver: BUSHLEY CREEK
1.6 MI EAST OF LA 503, LaSalle, LA
Built 1963 Load: 23.6 t ADT: 183
Showing 2,501-2,550 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 |