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
LA0435
FairOver: ABITA RIVER
LA 435 @ LOGMI 0.77, St. Tammany, LA
Built 1983 Load: 26.9 t ADT: 4,200
Honey Island Swamp
FairOver: DUCK BAYOU
0.9M EAST OF I-59, St. Tammany, LA
Built 1982 Load: 26.9 t
US0190
FairOver: DRAIN
0.9 M W OF I-55, Tangipahoa, LA
Built 1932 Load: 26.9 t ADT: 14,856
UNNAMED ROAD
FairOver: ODOM CREEK
VE 812 719, Vernon, LA
Built 2005 Load: 26.9 t ADT: 40
LA0182
FairOver: BAYOU LAFOURCHE
.01 MI EAST OF LA 1, Lafourche, LA
Built 1936 Load: 27.2 t ADT: 5,783
US0090-B
FairOver: R/R CITY STS
.4 MI SOUTH OF I-10, Orleans, LA
Built 1960 Load: 27.2 t ADT: 154,311
I0010
FairOver: I10 EAST &I 10 W
2.08 MI EAST OF US 90, Orleans, LA
Built 1968 Load: 27.2 t ADT: 7,620
LA0046
FairOver: BAYOU LALOUTRE
5.4 MI SOUTH OF LA 1245, St. Bernard, LA
Built 1984 Load: 27.2 t ADT: 2,045
LA0182
FairOver: DRAIN CANAL
11.09 MI EAST OF LA 20, Terrebonne, LA
Built 1931 Load: 27.2 t ADT: 3,687
Regan Rd
FairOver: DRAIN
0.4 MI W of LA 3070, Acadia, LA
Built 2008 Load: 27.2 t ADT: 96
LA0098
FairOver: BAYOU DE CANNES
2.53 MI WEST OF LA 97, Acadia, LA
Built 1963 Load: 27.2 t ADT: 1,790
LA0091
FairOver: LITTLE BAYOU
3.2 MI NORTH OF LA 100, Acadia, LA
Built 1954 Load: 27.2 t ADT: 1,617
Riverside Rd.
FairOver: I0010
0.9 Mi S OF LA 97, Acadia, LA
Built 1961 Load: 27.2 t ADT: 4,600
LA1111
FairOver: WYKOFF BAYOU
1.1 MI NORTH OF I-10, Acadia, LA
Built 1963 Load: 27.2 t ADT: 1,773
LA0010
FairOver: CREEK
2.4 MI SOUTH OF LA 106, Evangeline, LA
Built 1967 Load: 27.2 t ADT: 1,570
LA0115
FairOver: BAYOU COCODRIE
7.57 MI NORTH OF LA 106, Evangeline, LA
Built 1957 Load: 27.2 t ADT: 711
LA0115
FairOver: Bayou Cocodrie
8.03 MI NORTH OF LA 106, Evangeline, LA
Built 1957 Load: 27.2 t ADT: 711
LA0668
FairOver: DELAHOUSSAYE CANAL
0.55 MI NORTH OF LA 671, Iberia, LA
Built 1963 Load: 27.2 t ADT: 3,169
LA0682
FairOver: Malam Branch Canal
1.81 MI NORTH OF LA 675, Iberia, LA
Built 1967 Load: 27.2 t ADT: 750
Gloria Switch Rd
FairOver: VERMILION RIVER
1.4 MI EAST OF LA 314, Lafayette, LA
Built 1971 Load: 27.2 t ADT: 8,240
LA0339
FairOver: DRAINAGE CANAL
1.5 Mi. North of LA 92, Lafayette, LA
Built 1957 Load: 27.2 t ADT: 24,186
Tubing Rd.
FairOver: DES POCHES COULEE
0.10 Mi S of US 90 Serv R, Lafayette, LA
Built 1973 Load: 27.2 t ADT: 340
Commission Blvd.
FairOver: COULEE DES POCHES
0.70 MI NE of LA 182, Lafayette, LA
Built 1993 Load: 27.2 t ADT: 760
I0049
FairOver: DRAINAGE CANAL
1.2 Miles South of LA 182, St. Landry, LA
Built 1963 Load: 27.2 t ADT: 3,770
I0049
FairOver: BAYOU BOURBEAU
2.5 MI NORTH OF LA 93, St. Landry, LA
Built 1962 Load: 27.2 t ADT: 41,327
LA0103
FairOver: BAYOU CARRON
1.4 MI NORTH OF US 167, St. Landry, LA
Built 1962 Load: 27.2 t ADT: 2,097
LA0103
FairOver: DRAINAGE CANAL
2.58 MI NORTH OF US 190, St. Landry, LA
Built 1962 Load: 27.2 t ADT: 1,484
LA0752
FairOver: BAYOU MALLET
0.3 MILES SOUTH OF US 190, St. Landry, LA
Built 1968 Load: 27.2 t ADT: 475
LA0752
FairOver: DRAINAGE CANAL
0.1 MI SOUTH OF US 190, St. Landry, LA
Built 1968 Load: 27.2 t ADT: 475
LA0353
FairOver: CYPRESS ISLAND BAYOU
1.9 MI NORTH OF LA 31, St. Martin, LA
Built 1962 Load: 27.2 t ADT: 4,152
FLAMINGO BLVD
FairOver: CREEK
0.02 SE of LA 70, St. Mary, LA
Built 1981 Load: 27.2 t ADT: 700
MLK Jr. St.
FairOver: CHOUPIQUE BAYOU
0.2 Mi SE of La 83, St. Mary, LA
Built 1965 Load: 27.2 t ADT: 210
Cypremort Rd.
FairOver: VACHERE CANAL
0.05 Mi N. LA 83, St. Mary, LA
Built 1958 Load: 27.2 t ADT: 470
LA0092
FairOver: B GRAND MARAIS
0.7 MI E. OF LA 700, Vermilion, LA
Built 1961 Load: 27.2 t ADT: 5,170
LA0092
FairOver: CREEK
1.0 MI E. OF LA 700, Vermilion, LA
Built 1961 Load: 27.2 t ADT: 5,170
Old La 690
FairOver: COULEE
0.6 MI W of LA 330, Vermilion, LA
Built 1980 Load: 27.2 t ADT: 430
Ellis Bridge Rd
FairOver: Gueydan Canal
1.3 Mi W of La 91, Vermilion, LA
Built 1960 Load: 27.2 t ADT: 160
LA0009
FairOver: BEAR CREEK
5.23 MI NORTH OF LA 507, Bienville, LA
Built 1951 Load: 27.2 t ADT: 653
LA0155
FairOver: COULEE CREEK
1.2 MI EAST OF LA 796, Bienville, LA
Built 1956 Load: 27.2 t ADT: 1,222
LA0501
FairOver: DRAIN
7.23 MI SOUTH OF LA 4, Bienville, LA
Built 1960 Load: 27.2 t ADT: 318
LA0525
FairOver: CREEK
1.0 MI EAST OF LA 169, Caddo, LA
Built 1969 Load: 27.2 t ADT: 4,294
LA0525
FairOver: BUCHANAN BAYOU
1.8 MI EAST OF LA 169, Caddo, LA
Built 1969 Load: 27.2 t ADT: 4,294
LA0170
FairOver: CREEK
2.1 MI WEST OF LA 1, Caddo, LA
Built 1978 Load: 27.2 t ADT: 1,200
LA0170
FairOver: CREEK
1.58 MI WEST OF LA 1, Caddo, LA
Built 1978 Load: 27.2 t ADT: 1,200
ROBERT ST
FairOver: HOLLYWOOD DITCH
0.2 MI.SO. HOLLYWOOD, Caddo, LA
Built 1960 Load: 27.2 t ADT: 200
Hereford Rd
FairOver: TETE BAYOU
4.7 MI W OF HWY 538, Caddo, LA
Built 1979 Load: 27.2 t ADT: 58
LA0002
FairOver: BAYOU DARBONNE
1.0 MI EAST OF LA 504, Claiborne, LA
Built 1963 Load: 27.2 t ADT: 1,302
LA0154
FairOver: LEATHERMAN CREEK
3.20 MI NORTH OF I-20, Claiborne, LA
Built 1981 Load: 27.2 t ADT: 609
LA0005
FairOver: BUSHNECK BAYOUREL
4.99 MI NORTH OF US 84, De Soto, LA
Built 1948 Load: 27.2 t ADT: 3,931
LA0005
FairOver: BUSHNECK BAYOU
5.3MI NORTH OF US 84, De Soto, LA
Built 1948 Load: 27.2 t ADT: 3,931
Showing 2,251-2,300 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.