Total Bridges
12,698
Public highway bridges in Louisiana
State profile · Above median Poor share
Louisiana bridge safety
According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Louisiana.
- 12,698
- Public bridges
- 38.7%
- Good condition
- 11.5%
- Poor condition
Louisiana holds 12,698 public highway bridges (#24 of 52 by inventory) with a 11.48% Poor share (#8 of 52 by Poor share).
That is 11.5% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 45 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.
Inventory: FHWA NBI 2024 · last ETL August 2026
Good Condition
38.7%
4,919 bridges rated 7-9
-11.3pp vs 50% benchmark
Poor Condition
11.5%
1,458 bridges whose lowest applicable component is rated 0-4
4.0pp vs national avg 7.5%
Louisiana vs national bridge condition
Louisiana - Good condition share 38.7%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Louisiana - Poor-condition share 38.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.
Louisiana in the national condition pattern
Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.
Louisiana vs all states by public bridge inventory
Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges
12,698 24th of 54 higher than 30 of 54 states
States and territories, banded by public bridge inventory size
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · 2024
Read the rank neighborhood for Louisiana
The highlighted point is Louisiana: 12,698 bridges and 11.48% in Poor condition, rank #45 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Louisiana on that same Poor-share ordering:
- North Dakota: 4,255 bridges · 10.98% Poor
- Michigan: 11,371 bridges · 11.27% Poor
- Louisiana: 12,698 bridges · 11.48% Poor
- Pennsylvania: 23,299 bridges · 12.58% Poor
- Guam: 47 bridges · 12.77% Poor
The full national sortable table lives on the rankings page.
Material families in Louisiana
Exclusive FHWA material families across all 12,698 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.
Who maintains Louisiana’s inventory
State agency holds 61.0% of the 12,698 public highway bridges filed under Louisiana in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.
When Louisiana’s bridges were built
Pre-1950 construction accounts for 4.2% of the 12,698 bridges with a recorded original year in Louisiana. Era bands are orthogonal to the Poor-share ranking above.
Condition Distribution
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 322 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 by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Louisiana on the same metric.
ND
North Dakota
10.98% top marginal rate
MI
Michigan
11.27% top marginal rate
LA
Louisiana
11.48% top marginal rate
PA
Pennsylvania
12.58% top marginal rate
GU
Guam
12.77% top marginal rate
Bridges Needing Most Attention in Louisiana
Six lowest-condition bridges in Louisiana, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
Avenue E
PoorOver: DRESSER CANAL
0.10 MI WEST OF LA 1, Lafourche, LA
Built 1952 Load: 0.0 t
VALENTINE BRIDGE R
PoorOver: LAFOURCHE BAYOU
0.01 MI N OF LA 1, Lafourche, LA
Built 1969 Load: 0.0 t
UNNAMED RD
PoorOver: I-10
3.1 MI EAST OF I-510, Orleans, LA
Built 1969 Load: 0.0 t ADT: 28,550
UNNAMED RD
PoorOver: I-10
4.5 MI EAST OF I-510, Orleans, LA
Built 1969 Load: 0.0 t ADT: 28,550
Almonaster Ave
PoorOver: INNER HARBOR NAVIGATION
0.01 MI E OF FRANCE RD, Orleans, LA
Built 1919 Load: 0.0 t
Beiber Rd
PoorOver: NEZPIQUE BAYOU
3.65 Mi W of La 1160, Evangeline, LA
Built 1965 Load: 0.0 t ADT: 70
All Bridges in Louisiana
CATHERINE ST
FairOver: TRIBUTARY TO CROSS LAKE
0.8 MI W OF LA171, Caddo, LA
Built 1955 Load: 18.8 t ADT: 200
North Lakeshore Dr
FairOver: TRIBUTARY TO CROSS LAKE
2.1 MI.SO. OF CADDO RD 4, Caddo, LA
Built 1982 Load: 18.8 t ADT: 38
Crawford Rd
FairOver: TIGER BRANCH
0.7 MI E OF LA 538, Caddo, LA
Built 1980 Load: 18.8 t ADT: 78
US0080
FairOver: OUACHITA RIVER-LOUISVILL
1.6 MI WEST OF LA 840-6, Ouachita, LA
Built 1936 Load: 18.8 t ADT: 17,683
LOUBERTA ST
FairOver: YOUNGS BAYOU
LOUBERTA STREET, Ouachita, LA
Built 1993 Load: 18.8 t ADT: 300
LA0017
FairOver: CREEK
2.5 MI NORTH OF LA 577, West Carroll, LA
Built 1924 Load: 18.8 t ADT: 2,238
LA3099
FairOver: PALMETTO CREEK
0.5 MI. SW OF INT US190, Beauregard, LA
Built 1973 Load: 18.8 t ADT: 2,614
E. LINCOLN RD
FairOver: CREEK
1.0 MI WEST OF LA 397, Calcasieu, LA
Built 1986 Load: 18.8 t ADT: 426
LAKESHORE DR
FairOver: DRAINAGE CANAL
0.05 MI S of LA 385, Calcasieu, LA
Built 1937 Load: 18.8 t ADT: 8,548
ANTHONY FERRY RD
FairOver: HOUSTON RIVER
0.4 MI NORTH OF LA 379, Calcasieu, LA
Built 1968 Load: 18.8 t ADT: 1,154
THIRD ST.
FairOver: DRAINAGE DITCH
0.3 MI W of LA 14, Jefferson Davis, LA
Built 1968 Load: 18.8 t ADT: 325
ABELL ROAD
FairOver: WEST LACASSINE BAYOU
0.9 MI E of LA101, Jefferson Davis, LA
Built 1970 Load: 18.8 t ADT: 50
DEWOLF RD.
FairOver: ARCENEAUX BAYOU
2.0 MI E of LA 383, Jefferson Davis, LA
Built 1980 Load: 18.8 t ADT: 300
FDR 273
FairOver: ROCKY BRANCH
NATIONAL FOREST, Rapides, LA
Built 1970 Load: 18.8 t ADT: 60
Old 165 Rd
FairOver: CYPRESS CREEK
2.65 M. N. OF JCT. LA 123, Grant, LA
Built 1935 Load: 18.8 t ADT: 61
Sugartown Rd
FairOver: CALCASIEU RIVER TRIB.
0.06 MILE EAST OF STROTHE, Rapides, LA
Built 1982 Load: 18.8 t ADT: 60
LA0004
FairOver: BILLS CREEK
4.57 M W of LA 846, Caldwell, LA
Built 1971 Load: 18.8 t ADT: 311
LA0004
FairOver: PINE CREEK
.2 MI NORTH OF LA 128, Franklin, LA
Built 1952 Load: 18.8 t ADT: 2,151
LA0429
FairOver: SMITH BAYOU
1.6 M W of LA 44, Ascension, LA
Built 1969 Load: 18.8 t ADT: 9,071
Roddy Rd
FairOver: BAYOU NARCISSE
.7 MI.NE-LA 3030 US61 JCT, Ascension, LA
Built 1994 Load: 18.8 t ADT: 500
Ott Ln
FairOver: BAYOU BLACK
.08 MI S INTER CANNON RD, Ascension, LA
Built 1977 Load: 18.8 t ADT: 20
Jefferson Hwy.
FairOver: CLAYCUT BAYOU
2.7 Mi N of LA 948, East Baton Rouge, LA
Built 1963 Load: 18.8 t ADT: 23,400
Old Hammond Hwy
FairOver: JONES CREEK
2.2 Miles E of US 61, East Baton Rouge, LA
Built 1958 Load: 18.8 t ADT: 7,800
Baringer Rd
FairOver: DRAINAGE BAYOU
1.6 MI NE. JCT I-10, East Baton Rouge, LA
Built 1965 Load: 18.8 t ADT: 5,290
LA0955
FairOver: BLACK CREEK
2.9 M E of LA 19, East Feliciana, LA
Built 1962 Load: 18.8 t ADT: 1,200
LA0069
FairOver: MUDDY BAYOU
2.2 Mi N of LA 996, Iberville, LA
Built 1962 Load: 18.8 t ADT: 3,301
LA0417
FairOver: JOHNSON CANAL
LA0417, Pointe Coupee, LA
Built 1963 Load: 18.8 t ADT: 503
US0051
FairOver: PONCHATOULA CREEK
US0051, Tangipahoa, LA
Built 1931 Load: 18.8 t ADT: 21,457
Wadesboro Rd
FairOver: NAV. PONCHATOULA
3.3 MI SW OF SR 22 E, Tangipahoa, LA
Built 1980 Load: 18.8 t ADT: 585
W. Palmetto St
FairOver: CREEK
1.2 MI SW/JCT16 PALMETTA, Tangipahoa, LA
Built 1975 Load: 18.8 t ADT: 545
Levee Road
FairOver: Drainage Channel
7 MI. W. OF MORGANZA LA, Pointe Coupee, LA
Built 1940 Load: 18.8 t ADT: 38
DRAKE AVE
FairOver: BAYOU SEGNETTE
0.5 M NORTH OF LAPALCO, Jefferson, LA
Built 1960 Load: 19.1 t ADT: 200
CLUB DR
FairOver: CANAL NO.3
0.005 MI N OF VETERANS B, Jefferson, LA
Built 1970 Load: 19.1 t
Bayou Folse Rd
FairOver: COULEE
0083 LOG MI FROM INT, Lafourche, LA
Built 1965 Load: 19.1 t ADT: 212
LA0047
FairOver: I C WATERWAY(GULF OUTLET
2.0 MI SOUTH OF I-10, Orleans, LA
Built 1967 Load: 19.1 t ADT: 23,365
MORRISON RD
FairOver: LAWRENCE CANAL
1.0 MI.W OF EDWARD S, Orleans, LA
Built 1960 Load: 19.1 t
Bundy Rd
FairOver: DRAINAGE CANAL
0.6 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 19.1 t
Bundy Rd
FairOver: DRAINAGE CANAL
0.65 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 19.1 t
Polk St
FairOver: CANAL
0041 LOG MI FROM IN, Terrebonne, LA
Built 1965 Load: 19.1 t ADT: 6,018
Bayou Gardens Blvd
FairOver: ST. LOUIS CANAL
0.3 WEST OF LA 660, Terrebonne, LA
Built 1995 Load: 19.1 t ADT: 10,255
JARVIS BRIDGE RD
FairOver: BLACK BAYOU
0.01 MI N OF LA 182, Terrebonne, LA
Built 1968 Load: 19.1 t ADT: 130
Fournerat Rd
FairOver: Bayou Des Cannes
2.1 Mi. W. Of La 91, Acadia, LA
Built 1986 Load: 19.1 t ADT: 720
Estis Rd
FairOver: Segura Branch Canal
0.5 MI E of US 90 Serv Rd, Iberia, LA
Built 1966 Load: 19.1 t ADT: 323
Gateau Rd
FairOver: COULEE
0.20 Mi N of LA 93, Lafayette, LA
Built 1977 Load: 19.1 t ADT: 70
Bernice St.
FairOver: Yarbor Bayou
0.1 Mi E of Ina Clare Dr., St. Landry, LA
Built 1960 Load: 19.1 t ADT: 800
W. Church St.
FairOver: BAYOU TESSON
0.2 Mi W. of La 182, St. Landry, LA
Built 1965 Load: 19.1 t ADT: 2,200
Pepper Rd.
FairOver: COULEE
0.2 Mi S of US 90, St. Mary, LA
Built 1967 Load: 19.1 t ADT: 230
LA0082
FairOver: HERBERT CANAL
5.92 MI E. OF LA 35, Vermilion, LA
Built 1957 Load: 19.1 t ADT: 2,899
PARISH RD 688
FairOver: BOSTON CANAL
0.6 MI W. OF LA 331, Vermilion, LA
Built 1967 Load: 19.1 t ADT: 150
LA0003
FairOver: DRAIN
.71 MI NORTH OF LA 2, Bossier, LA
Built 1960 Load: 19.1 t ADT: 2,638
Showing 801-850 of 12,698 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
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.
What to do with this
Use Louisiana's inventory picture to drill to a county or a specific span.
- Browse counties in Louisiana and open the highest-Poor shares first. County list
- See where this state sits among peers on Poor-condition share. State rankings
- Compare this state with another jurisdiction on the same measures. State compare
NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Louisiana Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.