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
LA0970
PoorOver: BAYOU MOREAU
LA0970, Pointe Coupee, LA
Built 1971 Load: 22.7 t ADT: 84
LA0969
PoorOver: BONEY CREEK
0 15 MI N of LA 66, West Feliciana, LA
Built 1983 Load: 22.7 t ADT: 385
LA0966
PoorOver: CHANEY CREEK
LA0966, West Feliciana, LA
Built 1978 Load: 22.7 t ADT: 857
LA1040
PoorOver: YELLOW WATER RIVER
4.7 Mi E of La 43, Tangipahoa, LA
Built 1958 Load: 22.7 t ADT: 7,190
LA0443
PoorOver: SKULLS CREEK
0.1 M N OF LA 1064, Tangipahoa, LA
Built 1954 Load: 22.7 t ADT: 6,478
Narretto Rd
PoorOver: BRUSHY BRANCH
3 MI NE OF JCT 1064, Tangipahoa, LA
Built 1975 Load: 22.7 t ADT: 359
LA3070
PoorOver: COULEE DE SAULE
3 MI NORTH OF LA 100, Acadia, LA
Built 1980 Load: 23.0 t ADT: 956
LA0509
PoorOver: CROOKED BAYOU
.90 MI WEST OF LA 1, Red River, LA
Built 1978 Load: 23.0 t ADT: 1,975
I0010
PoorOver: CALCASIEU RIVER RR STS
2.3 MI E OF I-210, Calcasieu, LA
Built 1952 Load: 23.0 t ADT: 86,600
LA0156
PoorOver: SALINE BAYOU
0.92 MI. WEST OF LA 1233, Winn, LA
Built 1952 Load: 23.0 t ADT: 525
LA0421
PoorOver: ALEXANDER CREEK W
0.6 M E of US 61, West Feliciana, LA
Built 1971 Load: 23.0 t ADT: 739
Huckaby Rd
PoorOver: HUCKABY RD. BLACK B.CA
1.45 MI W OF US 71, Caddo, LA
Built 1979 Load: 23.3 t ADT: 211
Bailey Town Rd
PoorOver: BAILEY TN RD TR CORNEY B
6.8 MI. E. OF LA. 2, Claiborne, LA
Built 1975 Load: 23.3 t ADT: 65
I0049
PoorOver: BAYOU CLEAR DIV. CANAL
0.64 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 23.3 t ADT: 24,080
LA0128
PoorOver: TURKEY CREEK
.6 MI EAST OF LA 874, Franklin, LA
Built 1970 Load: 23.3 t ADT: 1,059
Alphonse Forbes Rd
PoorOver: DRAINAGE BAYOU
1.7 MI. NE. INDIAN MD., East Baton Rouge, LA
Built 1965 Load: 23.3 t ADT: 54
LA0374
PoorOver: BAYOU
4.5 MI EAST OF LA 3277, Evangeline, LA
Built 1956 Load: 23.6 t ADT: 632
LA0175
PoorOver: BAYOU PIERRE
.78 MI SOUTH OF LA 1, Caddo, LA
Built 1958 Load: 23.6 t ADT: 931
LA0034
PoorOver: CREEK
1.42 MI EAST OF US 71, Grant, LA
Built 1951 Load: 23.6 t ADT: 482
Lamourie Rd
PoorOver: LAMOURIE BAYOU
1.74 MILES EAST OF US 71, Rapides, LA
Built 1960 Load: 23.6 t ADT: 120
Carney Rd
PoorOver: DRAINAGE BAYOU
4.2 MI SW JCT LA 64, East Baton Rouge, LA
Built 1965 Load: 23.6 t ADT: 1,496
CYPRESS AVE
PoorOver: BAYOU POINTE AU CHENE
3.55 MI FROM LA 55, Lafourche, LA
Built 1987 Load: 23.7 t ADT: 193
LA0047
PoorOver: BAYOU BIENVENUE
3.0 MI SOUTH OF I-10, Orleans, LA
Built 1973 Load: 23.7 t ADT: 23,365
Bailey Town Rd
PoorOver: BAILEY TN RD TR. CORNEY
6.97 MI. E. OF LA. 2, Claiborne, LA
Built 1975 Load: 23.7 t ADT: 65
Bailey Town Rd
PoorOver: BAILEY TN RD TR CORNEY B
6.75 MI. E. OF LA. 2, Claiborne, LA
Built 1975 Load: 23.7 t ADT: 65
US0084
PoorOver: BAYOU CASTOR
2.1 MI EAST OF LA 5, De Soto, LA
Built 1951 Load: 23.7 t ADT: 6,314
LA0544
PoorOver: LA 544 OVER I-20
LA 544 OVER I-20, Lincoln, LA
Built 1963 Load: 23.7 t ADT: 11,636
LA0545
PoorOver: DARBONNE BAYOU
2.8 MI NORTH OF LA 146, Lincoln, LA
Built 1973 Load: 23.7 t ADT: 404
FDR 360
PoorOver: LIVROGNE BAYOU
5.6 M. W. OF GORUM, Natchitoches, LA
Built 1978 Load: 23.7 t ADT: 30
Tulane Ave
PoorOver: HYNSON BAYOU
TULANE AVENUE, Rapides, LA
Built 1981 Load: 23.7 t ADT: 200
Lower Zachary Rd
PoorOver: WHITE BAYOU
1.1 Mi. W. of LA 67, East Baton Rouge, LA
Built 1970 Load: 23.7 t ADT: 1,889
LA0068
PoorOver: REDWOOD CREEK
0.04 M E of LA 68, East Feliciana, LA
Built 1979 Load: 23.7 t ADT: 1,341
I0055-S
PoorOver: NORTH PASS
North Pass, Tangipahoa, LA
Built 1960 Load: 23.7 t ADT: 4,107
Elenor Rd.
PoorOver: Coulee
1.1 Mi. S. of US 90, Acadia, LA
Built 1970 Load: 23.8 t ADT: 576
BLANCHARD ROAD
PoorOver: EAST BAYOU LACASSINE
3.1 MI W. OF LA 395, Jefferson Davis, LA
Built 1965 Load: 23.9 t ADT: 40
Sybils Crossing
PoorOver: BAYOU DES GLAISES
0.03 MI. EAST OF LA 451, Avoyelles, LA
Built 1998 Load: 23.9 t ADT: 100
LA1215
PoorOver: TOLEDO BEND LAKE
2.29 MI. WEST OF LA 191, Sabine, LA
Built 1967 Load: 23.9 t ADT: 1,532
LA0010
PoorOver: PALMETTO CO CANAL
9.60 MI WEST OF LA 105, St. Landry, LA
Built 1959 Load: 24.0 t ADT: 1,185
LA0157
PoorOver: CYPRESS BAYOU
3.99 MI NORTH OF LA 2, Bossier, LA
Built 1986 Load: 24.0 t ADT: 1,082
LA0529
PoorOver: CREEK
6.58 MI NORTH OF LA 160, Bossier, LA
Built 1973 Load: 24.0 t ADT: 590
US0071
PoorOver: CROSS BAYOU
.1 MI NORTH OF LA 173, Caddo, LA
Built 1940 Load: 24.0 t ADT: 5,484
Bailey Town Rd
PoorOver: BAILEY TN RD TR CORNY B.
6.9 MI. E. OF LA. 2, Claiborne, LA
Built 1975 Load: 24.0 t ADT: 65
FDR 556
PoorOver: PRAIRIE CREEK
LOGMI 1.40 FR 546 TO, Grant, LA
Built 1962 Load: 24.0 t ADT: 34
US0071
PoorOver: BAYOU RIGOLETTE
2.0 MI NORTH OF LA 492, Grant, LA
Built 1950 Load: 24.0 t ADT: 2,063
LA0935
PoorOver: BLACK BAYOU
0.9 M W of LA 935&LA 431, Ascension, LA
Built 1974 Load: 24.0 t ADT: 4,835
LA0091
PoorOver: BAYOU JONAS
1.66 MI W of LA 1120, Acadia, LA
Built 1979 Load: 24.3 t ADT: 1,617
E. LINCOLN RD
PoorOver: BLACK BAYOU
1.9 MI. E. OF LA 385, Calcasieu, LA
Built 1987 Load: 24.3 t ADT: 617
LA0385
PoorOver: S FORK BLACK BAYOU
1.0 MI. N OF LA 384, Cameron, LA
Built 1954 Load: 24.3 t ADT: 4,633
LA0174
PoorOver: BAYOU-SAN-PATRICIO-RELIE
.3 MI EAST OF US 171, Sabine, LA
Built 1977 Load: 24.3 t ADT: 1,099
LA0440
PoorOver: DRAIN
4.6M E TANGIPAHOA LINE, Washington, LA
Built 1993 Load: 24.3 t ADT: 1,262
Showing 12,351-12,400 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.