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
WASHINGTON AVE.
FairOver: WASHINGTON AVE. CANAL
0.1M EAST OF CARROLTON AV, Orleans, LA
Built 1961 Load: 25.3 t ADT: 9,489
I0310
FairOver: US 61/RR/SWAMP/LA 626
0.41 M SOUTH OF I-10, St. Charles, LA
Built 1992 Load: 25.3 t ADT: 20,850
Park Ave
FairOver: Richards Gully
1.0 Mi. W. of La 13, St. Landry, LA
Built 1987 Load: 25.3 t ADT: 1,500
US0090
FairOver: VACHERIE CANAL
3.24 Mi W of LA 83, St. Mary, LA
Built 1978 Load: 25.3 t ADT: 10,080
LA3147
FairOver: AMOCO PIPELINE
8.8 MI S. OF LA 82, Vermilion, LA
Built 1982 Load: 25.3 t ADT: 221
LA0002
FairOver: CREEK
.09 MI EAST OF LA 3, Bossier, LA
Built 1960 Load: 25.3 t ADT: 4,236
LA0527
FairOver: RED CHUTE BAYOU
3.16 MI E JCT US 71-LA527, Bossier, LA
Built 1983 Load: 25.3 t ADT: 1,951
FLOURNOY LUCAS RD
FairOver: BRUSHY BAYOU
1.0 MI. E. OF I-49, Caddo, LA
Built 1975 Load: 25.3 t ADT: 7,518
LA0590
FairOver: CREEK
1.43 MI EAST OF US 425, Morehouse, LA
Built 1970 Load: 25.3 t ADT: 805
DEAN CHAPEL RD
FairOver: SOUTH TUPAWEK CREEK
0.25 MILES SOUTH OF LA 61, Ouachita, LA
Built 2011 Load: 25.3 t ADT: 3,100
Pulltight Rd
FairOver: TIGER BAYOU
0.7 MI N of LA 586, West Carroll, LA
Built 1997 Load: 25.3 t ADT: 168
US0165
FairOver: DRAINAGE DITCH
0.5 MI. N. OF LA 26, Allen, LA
Built 2000 Load: 25.3 t ADT: 11,886
LA1156
FairOver: MAB BRANCH
0.9 MI. S OF LA3206, Allen, LA
Built 1979 Load: 25.3 t ADT: 550
BUCK BOWLES RD
FairOver: SONNIER BAYOU
1.1 MI WEST OF LA 26, Allen, LA
Built 2001 Load: 25.3 t ADT: 150
PALESTINE RD
FairOver: SIX MILE CREEK
1.9 MI E OF LA 377, Allen, LA
Built 2003 Load: 25.3 t ADT: 609
OLD RIVER RD
FairOver: CARTER CREEK
1.6 MI S of CANEY CREEK R, Beauregard, LA
Built 2002 Load: 25.3 t ADT: 28
SELLERS RD
FairOver: COLE CREEK
0.7 MI S of PHILLIPS RD, Beauregard, LA
Built 2002 Load: 25.3 t ADT: 80
S BEARHEAD RD
FairOver: CREEK
1.7 MI E OF LA 109, Beauregard, LA
Built 2002 Load: 25.3 t ADT: 25
LONGVILLE RD
FairOver: BARNES CREEK
2.2 MI E. of US 171, Beauregard, LA
Built 1983 Load: 25.3 t ADT: 250
TOWNSLEY RD
FairOver: DEER CREEK
2.6 MI SW OF LA 26, Beauregard, LA
Built 2006 Load: 25.3 t ADT: 350
N. LIGHTNER ST
FairOver: LATERAL L-14
0.1 MI E of LA 383, Calcasieu, LA
Built 2001 Load: 25.3 t ADT: 100
S PUMPKIN RIDGE RD
FairOver: CATTLE CROSSING
1.0 MI N OF LA 82, Cameron, LA
Built 1976 Load: 25.3 t ADT: 658
US0165
FairOver: UNION PACIFIC RR OVERPAS
.7 MI NORTH OF US 90, Jefferson Davis, LA
Built 2004 Load: 25.3 t ADT: 3,162
LA0026
FairOver: DRAINAGE
3.7 M S of LA 1126, Jefferson Davis, LA
Built 1974 Load: 25.3 t ADT: 5,622
COMPTON ROAD
FairOver: GUM GULLY
3.5 M S of LA 102, Jefferson Davis, LA
Built 1975 Load: 25.3 t ADT: 30
LA0493
FairOver: CANE RIVER
1.95 MI. E OF INT LA1, Natchitoches, LA
Built 1949 Load: 25.3 t ADT: 294
VANDENBURG DR
FairOver: BAYOU RAPIDES
0.01 MI. NORTH OF LA 486, Rapides, LA
Built 1955 Load: 25.3 t ADT: 175
South Calvin
FairOver: KYIAIES CREEK
0.42 MI. SOUTH OF LA 156, Winn, LA
Built 1991 Load: 25.3 t ADT: 80
US0165
FairOver: BLACK BAYOU RELIEF
4.0 MILES SOUTH OF LA 4 &, Caldwell, LA
Built 1945 Load: 25.3 t ADT: 12,669
LA0573
FairOver: YOUNG BAYOU
1.15 MI SOUTH OF LA 128, Tensas, LA
Built 1978 Load: 25.3 t ADT: 109
LA0037
FairOver: COMITE RIVER
LA0037, East Baton Rouge, LA
Built 1961 Load: 25.3 t ADT: 22,627
LA0016
FairOver: SLOUGH
0.8 M N OF LA 42, Livingston, LA
Built 1974 Load: 25.3 t ADT: 10,070
CCCFERRY
FairOver: LOWER ALGIERS FERRY FAC.
2.0 MI S. OF LA 407, Orleans, LA
Built 1994 Load: 25.4 t ADT: 1,500
CCCFERRY
FairOver: PARIS RD/CHAL. FERRY RAM
0.8 MI S OF LA 39, St. Bernard, LA
Built 1968 Load: 25.4 t ADT: 1,500
US0061
FairOver: BONNET CARRE
.7 MI WEST OF LA 48, St. Charles, LA
Built 1935 Load: 25.4 t ADT: 25,051
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1941 Load: 25.4 t ADT: 8,922
LA0013
FairOver: LIONS PT GULLEY
.6 MI NORTH OF LA 92, Acadia, LA
Built 1951 Load: 25.4 t ADT: 6,068
LA0098
FairOver: CREEK
.1 MI EAST OF LA 91, Acadia, LA
Built 1950 Load: 25.4 t ADT: 729
LA0091
FairOver: LAZY POINT CANAL
1.6 MI NORTH OF LA 92, Acadia, LA
Built 1951 Load: 25.4 t ADT: 1,947
Caffey Rd.
FairOver: I-10
1.1 MI EAST OF LA 1111, Acadia, LA
Built 1966 Load: 25.4 t ADT: 4,212
LA0106
FairOver: BAYOU CHICOT
0.6 MI EAST OF US 167, Evangeline, LA
Built 1970 Load: 25.4 t ADT: 1,294
LA3195
FairOver: BAYOU TECHE
0.10 MI North OF LA 182, Iberia, LA
Built 1980 Load: 25.4 t ADT: 7,245
JOHNSTON STREET
FairOver: COULEE MINE BR
0.8 MI NE OF LA 3025, Lafayette, LA
Built 1958 Load: 25.4 t ADT: 29,320
LA0182
FairOver: CARENCRO BAYOU
0.8 Mi. NE of I-49, St. Landry, LA
Built 1948 Load: 25.4 t ADT: 16,573
Bordelon Rd
FairOver: I-10
1.5 MI WEST OF LA 347, St. Martin, LA
Built 1970 Load: 25.4 t ADT: 2,970
LA0317
FairOver: YELLOW BAYOU
0.5 Mi. North of US 90, St. Mary, LA
Built 1950 Load: 25.4 t ADT: 2,330
LA0013
FairOver: COULEE DES ISES
3.36 MI N. OF LA 14, Vermilion, LA
Built 1952 Load: 25.4 t ADT: 2,466
LA0013
FairOver: BAYOU GRAND MARAIS
5.84 MI N. OF LA 14, Vermilion, LA
Built 1952 Load: 25.4 t ADT: 2,466
I0020
FairOver: I-20 OVER US 171/HEARNE
I-20 OVER US 71, Caddo, LA
Built 1965 Load: 25.4 t ADT: 98,318
US0371
FairOver: SAUSMAN CREEK
4.52 MI NORTH OF US 80, Webster, LA
Built 1960 Load: 25.4 t ADT: 8,913
Showing 2,001-2,050 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.