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
Sligo Rd
FairOver: Foxskin Bayou
0.80 MI W OF LA 157, Bossier, LA
Built 2019 Load: 51.8 t ADT: 2,000
CHENIER PERDUE RD.
FairOver: LITTLE CHENIER BAYOU
0.01 MILES E OF LA 1143, Cameron, LA
Built 2015 Load: 51.8 t ADT: 341
PEASON RD
FairOver: SULPHUR BRANCH
2.76 MI. SW OF LA 118, Sabine, LA
Built 1984 Load: 51.8 t ADT: 60
Brewster Rd
FairOver: PIPE AT BLACK RIVER
LA 1077 9.0 S OF I-12, St. Tammany, LA
Built 1995 Load: 51.8 t ADT: 3,351
VIRGINIA AVE
FairOver: VIRGINIA AVE. DITCH
0.05 MI E OF US 171, Caddo, LA
Built 1965 Load: 52.2 t ADT: 100
Rigolette Rd
FairOver: RIGOLETTE BAYOU
0.59 MI. W. OF END LA 120, Rapides, LA
Built 2012 Load: 52.2 t ADT: 1,614
LA0448
FairOver: CREEK
0.3 M N OF LA 37, St. Helena, LA
Built 1962 Load: 52.5 t ADT: 547
I0020
FairOver: BLACK BAYOU
1.0 MI EAST OF LA 617, Ouachita, LA
Built 1965 Load: 52.6 t ADT: 84,225
I0020
FairOver: BLACK BAYOU
1.0 MI EAST OF LA 617, Ouachita, LA
Built 1965 Load: 52.6 t ADT: 66,061
I0020
FairOver: BLACK BAYOU
.1 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 52.6 t ADT: 8,030
I0020
FairOver: BLACK BAYOU
1.0 MI EAST OF LA 617, Ouachita, LA
Built 1965 Load: 52.6 t ADT: 15,642
LA0113
FairOver: CALCASIEU RIVER
3.40 MI. E OF INT LA112, Rapides, LA
Built 1981 Load: 52.6 t ADT: 2,071
Denver Hurst Rd
FairOver: BAYOU CONWAY
1.3 MI SW-LA30 US 61 JCT, Ascension, LA
Built 1998 Load: 52.6 t ADT: 50
LA0500
FairOver: BROWN-EYE CREEK
LA 500, Grant, LA
Built 1998 Load: 52.8 t ADT: 620
Filmore Ave
FairOver: BAYOU SAINT JOHN
0.1MI.E.OF WISNER BL, Orleans, LA
Built 1963 Load: 53.1 t
Filmore Ave
FairOver: BAYOU SAINT JOHN
0.1MI.E.OF WISNER BL, Orleans, LA
Built 1963 Load: 53.1 t
I0020
FairOver: I20;RAMP N2
1.6 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 53.5 t ADT: 15,642
Churchpoint Rd
FairOver: BLACK BAYOU
2 MI N. LA 30 US 61 JCT., Ascension, LA
Built 2000 Load: 53.5 t ADT: 1,200
Burbank Dr.
FairOver: BAYOU FOUNTAIN
3.2 M E of LA 327-S, East Baton Rouge, LA
Built 1976 Load: 53.5 t ADT: 26,100
Hooper Rd
FairOver: HORSEPEN CREEK RELIEF
2.32 M. N. OF B. MILLER R, Rapides, LA
Built 1984 Load: 53.8 t ADT: 250
US0090
FairOver: DUBOIN CANAL
0.40 Mi E of LA 83, Iberia, LA
Built 1969 Load: 54.4 t ADT: 22,993
MARTIN MUSE RD
FairOver: MAIDEN DOE BAYOU
0.1 MI N of LA 580, East Carroll, LA
Built 2001 Load: 54.4 t ADT: 100
PROSPECT RD
FairOver: UNNAMED CREEK
APP. 2.5 MI. E. OF LA 191, Sabine, LA
Built 1984 Load: 54.4 t ADT: 130
E John Templet Rd
FairOver: NEW RIVER CANAL
0.01 MI. N OF LA 429, Ascension, LA
Built 2001 Load: 54.4 t ADT: 25
George Lambert Rd
FairOver: BLACK BAYOU
0.5 M N OF LA 429, Ascension, LA
Built 2000 Load: 54.4 t ADT: 300
Denham Rd
FairOver: NEW RIVER CANAL
1.4 MI. N-LA30 US61 JCT., Ascension, LA
Built 2000 Load: 54.4 t ADT: 100
River Highlands Dr
FairOver: BAYOU PIERRE
1.1 MI. SE. OF LA 22, Ascension, LA
Built 1998 Load: 54.4 t ADT: 100
Cannon Rd
FairOver: BAYOU BLACK
1.6 ME. NE LA44 US61 JCT., Ascension, LA
Built 2000 Load: 54.4 t ADT: 200
I0110
FairOver: NORTH ST. OFF RAMP (N.B.
I0110, East Baton Rouge, LA
Built 1963 Load: 54.4 t ADT: 3,692
I0010
FairOver: RAMP
0.37 M E of LA 1, West Baton Rouge, LA
Built 1968 Load: 54.4 t ADT: 7,586
LA0041
FairOver: DRAIN
2.1 M N OF LA 435, St. Tammany, LA
Built 1972 Load: 54.4 t ADT: 3,043
I0055
FairOver: ICG RAILROAD
I0055, Tangipahoa, LA
Built 1968 Load: 54.4 t ADT: 36,311
LA0145
FairOver: CREEK
0.06 M N OF LA 821, Lincoln, LA
Built 2018 Load: 55.1 t ADT: 1,347
Kenilworth Pkwy
FairOver: DAWSON CREEK
0.5 M SW OF LA 427, East Baton Rouge, LA
Built 1973 Load: 55.1 t ADT: 5,042
US0090
FairOver: SEGURA BRANCH
3.10 Mi SE of LA 88, Iberia, LA
Built 1965 Load: 55.3 t ADT: 29,549
US0090
FairOver: SEGURA BRANCH
1.42 Mi NW of LA 675, Iberia, LA
Built 1965 Load: 55.3 t ADT: 10,090
US0090
FairOver: ARMENCO CANAL
0.6 Mi E of La 675, Iberia, LA
Built 1965 Load: 55.3 t ADT: 30,572
US0090
FairOver: ARMENCO CANAL
1.3 Mi W of La 14, Iberia, LA
Built 1965 Load: 55.3 t ADT: 10,090
US0080
FairOver: DRAIN
0.14 MI EAST OF LA 169, Caddo, LA
Built 1986 Load: 55.3 t ADT: 11,342
LA0389
FairOver: BUXTON CREEK
2.9 MI NORTH OF LA 12, Calcasieu, LA
Built 1993 Load: 55.3 t ADT: 1,858
I0110
FairOver: FLA. ST. OFF RAMP
I0110, East Baton Rouge, LA
Built 1963 Load: 55.3 t ADT: 8,250
LA0043
FairOver: I-12
3 Mi N. of La 42, Livingston, LA
Built 1968 Load: 55.3 t ADT: 9,837
LA0424
FairOver: WEST FORK CREEK
1.7 MI WEST JCT. LA 62, Washington, LA
Built 1995 Load: 55.3 t ADT: 1,873
COLUMBIA H.RD
FairOver: HAGGERTY Creek
.506M N of Sherwood Rd, Catahoula, LA
Built 1984 Load: 55.4 t ADT: 90
Palmisano Blvd
FairOver: 20 Arpent Canal
0.3 Mi. N. of La 39, St. Bernard, LA
Built 2017 Load: 55.7 t ADT: 400
Brook Dr.
FairOver: PINE POINT GULLY
0.62 Mi N of La 104, Evangeline, LA
Built 1980 Load: 55.7 t ADT: 97
LA0004
FairOver: CARTER BRANCH
6.78 MI NE JCT US 71, Bienville, LA
Built 1983 Load: 55.7 t ADT: 1,270
Big Creek Rd
FairOver: Big Creek
00.50 Mi E of La 563, Lincoln, LA
Built 2019 Load: 55.7 t ADT: 250
I0010
FairOver: DRAIN
2.5 M N of I-10&LA 73, Ascension, LA
Built 1975 Load: 56.1 t ADT: 25,735
LA0513
FairOver: CREEK
12.65 M. N. OF LA 483, De Soto, LA
Built 1992 Load: 56.2 t ADT: 243
Showing 6,001-6,050 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.