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
Anderson Rd
FairOver: QUEUE DE TORTUE BAYOU
0.15 Mi W of LA 724, Lafayette, LA
Built 1980 Load: 32.7 t ADT: 317
E. Butcher Switch
FairOver: DRAINAGE COULEE
2.20 Mi E of I-49, Lafayette, LA
Built 1984 Load: 32.7 t ADT: 224
LA0308
FairOver: DRAINAGE CANAL
4.8 MI N OF LA 657, Lafourche, LA
Built 2011 Load: 32.7 t ADT: 12,186
LA0307
FairOver: BAYOU BOEUF
9.2 MI NORTH OF LA 182, Lafourche, LA
Built 1976 Load: 32.7 t ADT: 2,271
LA0442
FairOver: W HOG BRANCH BR
LA0442, Livingston, LA
Built 1968 Load: 32.7 t ADT: 860
LA0442
FairOver: HOG BRANCH RELIEF
LA0442, Livingston, LA
Built 1968 Load: 32.7 t ADT: 860
LA0442
FairOver: HOG BRANCH RELIEF
LA0442, Livingston, LA
Built 1968 Load: 32.7 t ADT: 860
LA0442
FairOver: FLAT CREEK
0.6 M W OF LA 441, Livingston, LA
Built 1968 Load: 32.7 t ADT: 860
MISSISSIPPI ST.
FairOver: BRUSHY BAYOU
0.3 MI SW of US 80, Madison, LA
Built 1983 Load: 32.7 t ADT: 500
US0425
FairOver: HORSE BAYOU
1.77 MI. NORTH OF US 165, Morehouse, LA
Built 2012 Load: 32.7 t ADT: 5,676
US0425
FairOver: CYPRESS BAYOU
2.2 MI. NORTH OF LA 830-3, Morehouse, LA
Built 2012 Load: 32.7 t ADT: 5,676
TRAM ROAD
FairOver: STAGESTAND CREEK
PEASON RIDGE TRAIN. AREA, Natchitoches, LA
Built 2007 Load: 32.7 t ADT: 40
ROCK QUARRY ROAD
FairOver: ODOM CREEK
VE817710, Natchitoches, LA
Built 2005 Load: 32.7 t ADT: 40
LA0039
FairOver: N O P B RR (ROBERTSON ST
.6 MI EAST OF LA 3021, Orleans, LA
Built 1962 Load: 32.7 t ADT: 47,739
US0090-B
FairOver: SP. RR. & CITY STS.
1.1 MI SOUTH OF MISS. RIV, Orleans, LA
Built 1986 Load: 32.7 t ADT: 154,311
S. Broad St Exit
FairOver: STREETS
1.5 MI S OF TULANE AVENUE, Orleans, LA
Built 1951 Load: 32.7 t ADT: 5,441
Alvar St
FairOver: ALMONASTER, L&N RAILROAD
0.1 MI. S. OF DOWNMAN RD, Orleans, LA
Built 1978 Load: 32.7 t
Alvar St
FairOver: ALMONASTER, L&N RAILROAD
0.1 MI. S. OF DOWNMAN RD, Orleans, LA
Built 1978 Load: 32.7 t
FRONTAGE RD
FairOver: BENNENT BAYOU
1.0 MI. WEST OF MILLHAVEN, Ouachita, LA
Built 2012 Load: 32.7 t ADT: 444
US0165
FairOver: YOUNGS BAYOU
.7 MI NORTH OF LA 15, Ouachita, LA
Built 1966 Load: 32.7 t ADT: 17,565
I0020
FairOver: CURRY CREEK
.7 MI EAST OF LA 151, Ouachita, LA
Built 1960 Load: 32.7 t ADT: 40,857
I0020
FairOver: CURRY CREEK
.7 MI EAST OF LA 151, Ouachita, LA
Built 1960 Load: 32.7 t ADT: 40,857
NUTLAND RD
FairOver: YOUNGS BAYOU
2 MILES S OF MONROE, Ouachita, LA
Built 1982 Load: 32.7 t ADT: 400
US0190
FairOver: M.P. RR @ LIVONIA
0.75 MI W JCT LA 77, Pointe Coupee, LA
Built 1984 Load: 32.7 t ADT: 20,176
US0190
FairOver: M.P. RR @ LIVONIA
0.75 MI W JCT LA 77, Pointe Coupee, LA
Built 1984 Load: 32.7 t ADT: 13,660
I0049
FairOver: BAYOU JEAN DE JEAN
1.8 M NORTH OF LA 1200, Rapides, LA
Built 1989 Load: 32.7 t ADT: 25,477
Hickory Hill Rd
FairOver: BAYOU RIGOLETTE TRIB.
1.4 MI. WEST OF LA 3225, Rapides, LA
Built 2000 Load: 32.7 t ADT: 1,300
Parish Rd 225
FairOver: STANLEY CREEK
2.6 M N OF LA 786, Red River, LA
Built 1990 Load: 32.7 t ADT: 188
BOSCO LANE
FairOver: BAYOU LAFOURCH
RICHLAND PH ROAD NO 60, Richland, LA
Built 1997 Load: 32.7 t ADT: 100
SNIDER RD
FairOver: TURKEY CREEK
2.2 MI W of LA 17, Richland, LA
Built 2006 Load: 32.7 t ADT: 300
CREWLAKE LOOP
FairOver: CREW LAKE
0.2 MI N of US 80, Richland, LA
Built 2005 Load: 32.7 t ADT: 250
LA0006
FairOver: TOLEDO BEND LAKE
2.02 MI. WEST OF LA 191, Sabine, LA
Built 1968 Load: 32.7 t ADT: 3,030
LA0175
FairOver: BAYOU SAN MIGUEL RELIEF
1.94 M N OF N JCT. LA 120, Sabine, LA
Built 1934 Load: 32.7 t ADT: 1,587
LA0175
FairOver: NORTH FORK CREEK
7.87 M N OF N JCT. LA 120, Sabine, LA
Built 1934 Load: 32.7 t ADT: 1,900
TRAM ROAD
FairOver: LYLES CREEK
VE757727, Sabine, LA
Built 1987 Load: 32.7 t ADT: 40
TRAM ROAD
FairOver: LITTLE SANDY CREEK
VE 765 716, Sabine, LA
Built 1964 Load: 32.7 t ADT: 40
US0090
FairOver: DRAIN CANAL
4.3 MI EAST OF LA 633, St. Charles, LA
Built 1953 Load: 32.7 t ADT: 49,920
I0049
FairOver: BAYOU BOURBEAU
3.2 MI S of LA 3233, St. Landry, LA
Built 1962 Load: 32.7 t ADT: 13,540
I0049
FairOver: REST AREA OVERPASS
6.38 MI N OF LA 745, St. Landry, LA
Built 1986 Load: 32.7 t ADT: 21,048
I0049
FairOver: REST AREA OVERPASS
5.64 Mi S of LA 29, St. Landry, LA
Built 1986 Load: 32.7 t ADT: 13,540
LA0359
FairOver: BAYOU SAQUETTE
0.3 MI NORTH OF LA 103, St. Landry, LA
Built 1966 Load: 32.7 t ADT: 744
I0010
FairOver: E ATCHAFALAYA FLOODWAY
7.56 MI EAST OF LA 347, St. Martin, LA
Built 1972 Load: 32.7 t ADT: 42,449
I0010
FairOver: E ATCHAFALAYA FLOODWAY
0.8 Mi W. Of La 975, St. Martin, LA
Built 1972 Load: 32.7 t ADT: 1,585
LA0317
FairOver: ICWW @ BAYOU SALE
6.2 MI S OF US 90(LA0317), St. Mary, LA
Built 1982 Load: 32.7 t ADT: 2,700
US0090
FairOver: CHOUPIQUE BAYOU
0.2 Mi. NW of LA 83, St. Mary, LA
Built 1978 Load: 32.7 t ADT: 10,070
US0090/Ramp
FairOver: CHOUPIQUE BAYOU
0.6 Mi N of LA 83, St. Mary, LA
Built 1978 Load: 32.7 t ADT: 12,192
US0090
FairOver: LITTLE BAYOU BLACK
8.3 MI EAST OF LA 182, St. Mary, LA
Built 1964 Load: 32.7 t ADT: 7,885
US0090
FairOver: LITTLE BAYOUBLACK
2.0 MI W of LA 182/LA70, St. Mary, LA
Built 1964 Load: 32.7 t ADT: 10,035
I0059
FairOver: YELLOW BAYOU
I0059, St. Tammany, LA
Built 1962 Load: 32.7 t ADT: 33,925
I0012
FairOver: ICRR
I0012, Tangipahoa, LA
Built 1975 Load: 32.7 t ADT: 21,736
Showing 4,401-4,450 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 |