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
LA0157
Structurally DeficientOver: FLAT RIVER
.55 MI NORTH OF US 71, Bossier, LA
Built 1964 Load: 27.2 t ADT: 2,626
US0090
Structurally DeficientOver: RAMOS BAYOU
4.1 MI EAST OF US 90, St. Mary, LA
Built 1932 Load: 27.2 t ADT: 7,504
US0080
Structurally DeficientOver: MILE CREEK
2.57 MI EAST OF US 371, Webster, LA
Built 1948 Load: 27.2 t ADT: 9,109
LA0531
Structurally DeficientOver: BRUSHY CREEK
1.66 MI NORTH OF LA 532, Webster, LA
Built 1966 Load: 27.2 t ADT: 1,689
US0071
Structurally DeficientOver: LITTLE NATCHEZ BAYOU
0.58 MI. NORTH OF LA 477, Winn, LA
Built 1955 Load: 27.2 t ADT: 1,457
E Lanoux Rd
Structurally DeficientOver: NEW RIVER CANAL
0.2 M N of LA 429, Ascension, LA
Built 1994 Load: 28.8 t ADT: 25
PAYTON RD
Structurally DeficientOver: CREEK
0.4 MI E of GUILLORY RD, Jefferson Davis, LA
Built 1970 Load: 29.0 t ADT: 75
US0165
Structurally DeficientOver: LA. & ARKANSAS RR
1.44 MI. N OF INT US71, Rapides, LA
Built 1997 Load: 29.0 t ADT: 20,902
I0020
Structurally DeficientOver: M.P. RR
.6 MI EAST OF US80, Caddo, LA
Built 1965 Load: 30.5 t ADT: 98,318
LA0524
Structurally DeficientOver: ELEM BRANCH
.93 MI WEST OF US 165, Grant, LA
Built 1931 Load: 30.5 t ADT: 14
US0190
Structurally DeficientOver: LITTLE TECHE BAYOU
0.07 Mi W of LA 743, St. Landry, LA
Built 1962 Load: 30.8 t ADT: 10,487
LA0042
Structurally DeficientOver: AMITE RIVER @ P'VINCENT
0.1 M S OF LA 16, Livingston, LA
Built 1963 Load: 31.8 t ADT: 13,122
LA0473
Structurally DeficientOver: BAYOU TORO
1.6 MI EAST OF LA 191, Sabine, LA
Built 1986 Load: 32.1 t ADT: 738
LINVILLE FIRE TWR
Structurally DeficientOver: ROCK CREEK
6.7 MI. ENE INT. 470, Union, LA
Built 1982 Load: 32.4 t ADT: 457
DRAKE AVE
Structurally DeficientOver: BAYOU SEGNETTE
0.5 M NORTH OF LAPALCO, Jefferson, LA
Built 1960 Load: 32.7 t ADT: 200
Charlie Overton Rd
Structurally DeficientOver: CHOCTAW CREEK
3.8MI.E OF 349, St. Helena, LA
Built 1966 Load: 33.4 t
I0020
Structurally DeficientOver: MARSHALL ST&LA&KCI-20
I-20 RAMP TO LA 1, Caddo, LA
Built 1965 Load: 33.6 t ADT: 87,567
LA0159
Structurally DeficientOver: KCS RR MINDEN
3.6 MI N OF LA164, Webster, LA
Built 1960 Load: 35.3 t ADT: 9,864
LA3008
Structurally DeficientOver: BLACK BAYOU RELIEF
1..5 MI SOUTH OF LA 160, Webster, LA
Built 1974 Load: 36.3 t ADT: 145
MARY BETH AVE
Structurally DeficientOver: HOLLYWOOD CANAL
0.6 MI N. OF LA 316, Lafourche, LA
Built 1968 Load: 36.9 t ADT: 411
LA0515
Structurally DeficientOver: COUSHATTA BAYOU
1.06 MI NORTH OF US 71, Red River, LA
Built 1975 Load: 37.2 t ADT: 338
LA0515
Structurally DeficientOver: FOURMILE BAYOU
4.4 MI NORTH OF US 71, Red River, LA
Built 1975 Load: 37.2 t ADT: 338
LA0515
Structurally DeficientOver: FOURMILE BAYOU
4.98 MI NORTH OF US 71, Red River, LA
Built 1975 Load: 37.2 t ADT: 338
LA3008
Structurally DeficientOver: FLAT LICK RELIEF ELIEF
8.2 MI SOUTH OF LA 160, Webster, LA
Built 1971 Load: 37.2 t ADT: 145
LA0783
Structurally DeficientOver: DRY CREEK
8.22 MI NORTH OF LA 783, Red River, LA
Built 1974 Load: 38.1 t ADT: 345
LA0063
Structurally DeficientOver: Little Beaver Dam
1.3 Mi. E. of LA 447, Livingston, LA
Built 1962 Load: 39.9 t ADT: 1,234
LA0009
Structurally DeficientOver: CORNEY LAKE
3.86 MI NORTH OF LA 2 ALT, Claiborne, LA
Built 1953 Load: 42.6 t ADT: 118
LA0109
Structurally DeficientOver: DRAIN
0.2 MI. SW of LA 27, Beauregard, LA
Built 1963 Load: 48.3 t ADT: 1,749
LA0013
Structurally DeficientOver: CREEK
.01 MI SOUTH OF LA 365, Acadia, LA
Built 1960 Load: 74.5 t ADT: 5,915
Connie Rd.
Structurally DeficientOver: COULEE
1.1 Mi. East of La 1120, Acadia, LA
Built 1986 Load: 74.5 t ADT: 24
LA1151
Structurally DeficientOver: DRAIN
2.0 W of US 165, Allen, LA
Built 1965 Load: 74.5 t ADT: 482
US0190
Structurally DeficientOver: DRAIN
1.3 MI WEST OF LA 3226, Beauregard, LA
Built 1964 Load: 74.5 t ADT: 3,187
LA0112
Structurally DeficientOver: DRAIN
2.3 MI E OF LA 113, Beauregard, LA
Built 1962 Load: 74.5 t ADT: 759
LA0109
Structurally DeficientOver: HURRICANE CREEK
5.0 MI SW OF LA 389, Beauregard, LA
Built 1962 Load: 74.5 t ADT: 750
LA0109
Structurally DeficientOver: DRAIN
2.0 MI N OF LA 389, Beauregard, LA
Built 1963 Load: 74.5 t ADT: 1,749
LA0109
Structurally DeficientOver: DRAIN
3.3 MI N OF LA 389, Beauregard, LA
Built 1963 Load: 74.5 t ADT: 1,749
E. GAUTHIER RD
Structurally DeficientOver: CREEK
0.6 MI W of LA 397, Calcasieu, LA
Built 1986 Load: 74.5 t ADT: 1,349
LA0093
Structurally DeficientOver: Bayou ILL Des Cannes
1.67 Mi N of LA 342, Lafayette, LA
Built 1956 Load: 74.5 t ADT: 8,559
LA0487
Structurally DeficientOver: BRUSHY BAYOU
1.7 M S OF AJAX, Natchitoches, LA
Built 1989 Load: 74.5 t ADT: 968
LA0119
Structurally DeficientOver: CREEK
3.67 MI. NORTH OF LA 8, Natchitoches, LA
Built 1972 Load: 74.5 t ADT: 189
I0049
Structurally DeficientOver: BAYOU LACARP
2.68 MI NORTH OF LA 119, Natchitoches, LA
Built 1986 Load: 74.5 t ADT: 18,305
Donahue Ferry Rd
Structurally DeficientOver: BAYOU MARIA
0.25 MI. EAST OF LA 3144, Rapides, LA
Built 1993 Load: 74.5 t ADT: 3,220
LA0039
Structurally DeficientOver: LA 39 OVER RR CANAL
LA 39 AT RR CANAL, St. Bernard, LA
Built 1991 Load: 74.5 t ADT: 47,739
LA0178
Structurally DeficientOver: DRAINAGE CANAL
1.3 MI E of LA 357, St. Landry, LA
Built 1963 Load: 74.5 t ADT: 1,619
NORTH ST
Structurally DeficientOver: CHACAHOULA CANAL
0.01M W OF DEADWOOD RD, Terrebonne, LA
Built 2011 Load: 74.5 t ADT: 135
WHITE OAK LANDING
Structurally DeficientOver: EDMONDS CREEK
.03 MI. N. INT. 088, Union, LA
Built 1984 Load: 74.5 t ADT: 135
LA9873
Structurally DeficientOver: DRAINAGE CANAL
2.1 MILES EAST OF HWY 415, West Baton Rouge, LA
Built 1962 Load: 74.5 t ADT: 1,725
LA0588
Structurally DeficientOver: BOGGY BAYOU
2.59 MI W of LA 17, West Carroll, LA
Built 1983 Load: 74.5 t ADT: 340
LA0126
Structurally DeficientOver: CYPRESS CREEK
1.2 MILES EAST OF LA 505, Winn, LA
Built 1990 Load: 74.5 t ADT: 527
Showing 12,651-12,699 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 |