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
HECKER RD
FairOver: BAYOU SERPENT
2.2 MI NORTH OF LA 3059, Calcasieu, LA
Built 1999 Load: 37.6 t ADT: 574
OLD RIVER RD
FairOver: CANAL
2.8 MI NORTH OF LA 12, Calcasieu, LA
Built 1994 Load: 37.6 t ADT: 890
OLD RIVER RD
FairOver: BESS BRANCH
5.0 MI N of LA 12, Calcasieu, LA
Built 1999 Load: 37.6 t ADT: 400
GREEN ISLAND RD
FairOver: BEAR HEAD CREEK
2.1 MI EAST OF LA 109, Calcasieu, LA
Built 1997 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: GREEN ISLAND MARSH
05.24 MI. N. OF INT 78, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 125
GREEN ISLAND RD
FairOver: GREEN ISLAND MARSH
5.6 MI E of LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 150
GREEN ISLAND RD
FairOver: CREEK
1.9 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: CREEK
1.4 MI E OF LA109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: LONG MARSH CREEK
4.4 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: LONG MARSH CREEK RELIEF
4.4 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: LEE MARSH CREEK
3.6 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
OAK ST
FairOver: BUXTON CREEK
0.1 MI N OF LA 12, Calcasieu, LA
Built 1991 Load: 37.6 t ADT: 160
US0165
FairOver: UNION PACIFIC R/R
2 MI. S FROM JCT LA 847 &, Caldwell, LA
Built 2007 Load: 37.6 t ADT: 11,282
US0165
FairOver: UNION PACIFIC R/R
2 MI. S FROM JCT LA 847 &, Caldwell, LA
Built 2007 Load: 37.6 t ADT: 12,669
LA0005
FairOver: CREEK
1.42 MI NORTH OF US 84, De Soto, LA
Built 1975 Load: 37.6 t ADT: 3,931
COUNTRY RD
FairOver: GARRETT CREEK
1.0 MILES WEST OF US 167, Jackson, LA
Built 2010 Load: 37.6 t ADT: 920
VETERANS BLVD
FairOver: SONIAT CANAL
0.1 MILE WEST OF DAVID DR, Jefferson, LA
Built 2005 Load: 37.6 t
BUCKLIN ROAD
FairOver: W.GRAND MARAIS BAYOU
1.7 MI W of LA 26, Jefferson Davis, LA
Built 1994 Load: 37.6 t ADT: 50
Maryview Farm Rd.
FairOver: DRAIN
.9 Mi East of LA 728-1, Lafayette, LA
Built 2006 Load: 37.6 t ADT: 752
Palmer Rd
FairOver: RODERICK CREEK
1 Mi E of La 42, Livingston, LA
Built 2004 Load: 37.6 t ADT: 250
Lake Forest BLVD
FairOver: BERG CANAL
0.2MI.E.OF WRIGHT RD, Orleans, LA
Built 1960 Load: 37.6 t
Lake Forest BLVD
FairOver: BERG CANAL
0.2 MI.E.OF WRIGHT.R, Orleans, LA
Built 1975 Load: 37.6 t
US0090
FairOver: ATCHAFALAYA RIVER
.3 Miles E of La 182 Ramp, St. Mary, LA
Built 1975 Load: 37.6 t ADT: 7,885
BAYOUSIDE DR
FairOver: BAYOU PETIT CAILLOU
.03 MILES NORTH OF LA 56, Terrebonne, LA
Built 2010 Load: 37.6 t ADT: 2,912
Placide Rd
FairOver: COULEE
0.02 Mi W of US 167, Vermilion, LA
Built 1996 Load: 37.6 t ADT: 720
Commerce ST
FairOver: WICKLIFFE CREEK
0.6 MILES WEST OF US 61 O, West Feliciana, LA
Built 1959 Load: 37.6 t ADT: 754
LA0010
FairOver: VAUGHN CREEK
10.15 Mi E of US 61, West Feliciana, LA
Built 1959 Load: 37.6 t ADT: 2,392
US0165-B
FairOver: RAIL ROAD
.3 MI N OF INT US 190, Allen, LA
Built 2002 Load: 37.9 t ADT: 11,886
FAIRFIELD AVENUE
FairOver: OCKLEY DITCH
2.2 MILES N OF LA 511, Caddo, LA
Built 1997 Load: 37.9 t ADT: 10,000
PORTLAND AVE
FairOver: KANSAS CITY SOUTHERN RR.
0.5 M W I20, Caddo, LA
Built 1979 Load: 37.9 t ADT: 5,548
Dan Howard Rd
FairOver: BLACK BAYOU
0.5 MI E OF LA900, Concordia, LA
Built 1986 Load: 37.9 t ADT: 30
Sherwood Forest Bl
FairOver: WEINER CREEK
1.4 MI SE I-12, US 61 JCT, East Baton Rouge, LA
Built 1968 Load: 37.9 t ADT: 39,727
College Dr
FairOver: WARD CREEK
1.0 M N of I10, East Baton Rouge, LA
Built 1967 Load: 37.9 t ADT: 27,063
S Choctaw Dr
FairOver: LIVELY BAYOU
0.1M EAST FLANNERY RD, East Baton Rouge, LA
Built 1990 Load: 37.9 t
LA0428
FairOver: INDUSTRY CANAL
.2 MI EAST OF LA 23, Jefferson, LA
Built 1975 Load: 37.9 t ADT: 28,244
LA0101
FairOver: GULLY
7.4 MI N of LA 14, Jefferson Davis, LA
Built 1983 Load: 37.9 t ADT: 3,166
GRAND MARAIS ROAD
FairOver: GRAND MARAIS BAYOU
1.7 MI E of LA395, Jefferson Davis, LA
Built 1999 Load: 37.9 t ADT: 400
PINE BLUFF RD
FairOver: GLADDEN BAYOU
1.89 MI E of LA 557, Ouachita, LA
Built 1990 Load: 37.9 t ADT: 431
US0167
FairOver: KCS RAILROAD
2.26 MI. NORTH OF LA 505, Winn, LA
Built 2010 Load: 37.9 t ADT: 5,367
LA1120
FairOver: ANDRE CANAL
3.6 Mi North of LA 91, Acadia, LA
Built 1974 Load: 38.1 t ADT: 801
LA1105
FairOver: GRAND COULEE
0.7 MI NORTH OF LA 370, Acadia, LA
Built 1971 Load: 38.1 t ADT: 608
LA1105
FairOver: GRAND COULEE
1.3 MI NORTH OF LA 370, Acadia, LA
Built 1971 Load: 38.1 t ADT: 608
Bridge St
FairOver: BAYOU LAFOURCHE
PLATTENVILLE, Assumption, LA
Built 1984 Load: 38.1 t ADT: 480
LA0394
FairOver: ANT BRANCH
2.88 MI. EAST OF US 171, Beauregard, LA
Built 1999 Load: 38.1 t ADT: 490
LA0394
FairOver: BEEMOUTH BRANCH
4.4 MI E of US 171, Beauregard, LA
Built 1997 Load: 38.1 t ADT: 490
LA0110
FairOver: CLEAR CREEK
0.7 MI. S OF US190, Beauregard, LA
Built 1974 Load: 38.1 t ADT: 1,947
LA0154
FairOver: CREEK
0.8 MI N. of LA 516, Bienville, LA
Built 1972 Load: 38.1 t ADT: 429
LA0793
FairOver: SLOUGH
.93 MI WEST OF LA 794, Bienville, LA
Built 1977 Load: 38.1 t ADT: 125
LA0157
FairOver: DRY CYPRESS BAYOU
6.3 MI NORTH OF LA 528, Bossier, LA
Built 1981 Load: 38.1 t ADT: 846
LA0162
FairOver: LITTLE CANEY BAYOU
5.06 MI EAST OF LA 3, Bossier, LA
Built 1978 Load: 38.1 t ADT: 4,595
Showing 5,101-5,150 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 |