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
Melody Dr
PoorOver: CANAL NO. 2
0.5 MI.N.OF.VETERANS, Jefferson, LA
Built 1960 Load: 18.1 t
LA0653
PoorOver: BAYOU DUMAR
3.7 MI EAST OF LA 182, Lafourche, LA
Built 1960 Load: 18.1 t ADT: 273
Peoples Ave
PoorOver: DRAINAGE DITCH
0.0 MI.N.OF FLORIDA, Orleans, LA
Built 1960 Load: 18.1 t
LA0058
PoorOver: DRAINAGE CANAL
.36 MI EAST OF LA 56, Terrebonne, LA
Built 1966 Load: 18.1 t ADT: 5,194
Roy Rd.
PoorOver: BLANC BAYOU
0.7 Mi. S. of US 90, Acadia, LA
Built 1965 Load: 18.1 t ADT: 28
LA0376
PoorOver: BAYOU
3.5 MI WEST OF LA 13, Evangeline, LA
Built 1967 Load: 18.1 t ADT: 104
Monnot Rd
PoorOver: DELAHOUSSAYE CANAL
0.10 Mi SW of La 668, Iberia, LA
Built 1966 Load: 18.1 t ADT: 90
Fenetre Rd.
PoorOver: ILE DES CANNES COULEE
.94 MI East of Tabb Rd, Lafayette, LA
Built 1983 Load: 18.1 t ADT: 200
LA0331
PoorOver: CREEK
2.1 Mi S. of LA 14, Vermilion, LA
Built 1940 Load: 18.1 t ADT: 1,518
LA0153
PoorOver: TOPY CREEK RELIEF
2.60 MI NORTH OF LA 155, Bienville, LA
Built 1975 Load: 18.1 t ADT: 1,377
Domino Rd
PoorOver: CHOCTAW CREEK
1.5 MI W OF LA 147, Bienville, LA
Built 1977 Load: 18.1 t ADT: 100
I0020
PoorOver: US71&KCSRR
RAMPS FOR US 71, Bossier, LA
Built 1966 Load: 18.1 t ADT: 23,105
LA0556
PoorOver: DRY CREEK
3.81 MI WEST OF LA 144, Jackson, LA
Built 1968 Load: 18.1 t ADT: 376
LA0810
PoorOver: BROWN CREEK
1.30 MI EAST OF LA 4, Jackson, LA
Built 1968 Load: 18.1 t ADT: 374
FLAT CR RD
PoorOver: FLAT CREEK
1 MI. ENE INT. 461, Jackson, LA
Built 1965 Load: 18.1 t
LA0603
PoorOver: ROUNDAWAY BAYOU
5.18 MI EAST OF SOUTH INT, Madison, LA
Built 1955 Load: 18.1 t ADT: 100
LA0134
PoorOver: BAYOU DESAIRD
1.2 MI EAST OF US 165, Ouachita, LA
Built 1979 Load: 18.1 t ADT: 3,462
US0080
PoorOver: BOEUF RIVER
.4 MI EAST OF LA 133, Richland, LA
Built 1958 Load: 18.1 t ADT: 2,747
LA0576
PoorOver: LITTLE CREEK
1.22 MI EAST OF LA 135, Richland, LA
Built 1968 Load: 18.1 t ADT: 163
LA0550
PoorOver: CREEK
4.12 MI NORTH OF LA 15, Union, LA
Built 1936 Load: 18.1 t ADT: 464
LA0550
PoorOver: LION CREEK
8.9 MI NORTH OF LA 15, Union, LA
Built 1950 Load: 18.1 t ADT: 464
LA0585
PoorOver: CREEK
.9 MI WEST OF LA 577, West Carroll, LA
Built 1948 Load: 18.1 t ADT: 422
EAST NICHOLS ST.
PoorOver: WELCH DRAINAGE CANAL
0.3 M EAST OF LA 99, Jefferson Davis, LA
Built 1983 Load: 18.1 t ADT: 500
Rexmere Crossing
PoorOver: BAYOU DES GLAISES
8M NNW OF SIMMESPORT, Avoyelles, LA
Built 1991 Load: 18.1 t ADT: 80
FDR 145-A
PoorOver: DRY PRONG CREEK
NO DATA ENTERED, Grant, LA
Built 1970 Load: 18.1 t ADT: 13
FDR 508
PoorOver: EIGHTMILE CREEK
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1970 Load: 18.1 t ADT: 30
US0165
PoorOver: LA 1230 UP RR
0.25 MI. NORTH OF LA 1230, Grant, LA
Built 1956 Load: 18.1 t ADT: 7,084
LA0485
PoorOver: LITTLE RIVER RELIEF
3.34 MI. NORTH OF LA 6, Natchitoches, LA
Built 1956 Load: 18.1 t ADT: 508
LA0119
PoorOver: CREEK
6.55 MI. NORTH OF LA 8, Natchitoches, LA
Built 1968 Load: 18.1 t ADT: 189
LA0119
PoorOver: CREEK
6.59 MI. NORHT OF LA 8, Natchitoches, LA
Built 1968 Load: 18.1 t ADT: 189
Government Rd
PoorOver: CYPRESS CR.
1.46 M. E. OF LA 153 NEAR, Natchitoches, LA
Built 1965 Load: 18.1 t ADT: 152
LA1204
PoorOver: KITCHEN CREEK
1.71 MI. E OF LA3225, Rapides, LA
Built 1973 Load: 18.1 t ADT: 2,440
LA0126
PoorOver: SALINE BAYOU RELIEF
1.2 MI WEST OF LA 1233, Winn, LA
Built 1941 Load: 18.1 t ADT: 310
LA1234
PoorOver: DRAIN
1.76 MI NORTH OF LA 126, Winn, LA
Built 1967 Load: 18.1 t ADT: 94
LA0506
PoorOver: BYRD CREEK
.7 MI EAST OF LA 849, Caldwell, LA
Built 1960 Load: 18.1 t ADT: 300
Boyce Tower Rd
PoorOver: CONWAY BAYOU
0.8 M W of US 61, Ascension, LA
Built 1965 Load: 18.1 t ADT: 5
N Achord Rd
PoorOver: DRAINAGE BAYOU
3.8 MI NE JCT I-10 L, East Baton Rouge, LA
Built 1970 Load: 18.1 t ADT: 1,732
Old Baker Zachary
PoorOver: DRAINAGE BAYOU
0.7 MI. N.W. of LA 19, East Baton Rouge, LA
Built 1960 Load: 18.1 t ADT: 1,727
Eagle Dr
PoorOver: W. BRANCH CYPRESS BAYOU
EAGLE DR. ZACHARY L, East Baton Rouge, LA
Built 1976 Load: 18.1 t ADT: 680
Powell Station Rd
PoorOver: WEST FORK BAYOU
1.7 MI S OF US61, West Feliciana, LA
Built 1976 Load: 18.1 t ADT: 60
John L. Ln
PoorOver: CREEK BRIDGE
1.5MI S OF US 190-LA 1026, Livingston, LA
Built 1978 Load: 18.1 t ADT: 550
Sawmill Rd
PoorOver: CREEK
0.4MI.S.OF LA.16, St. Helena, LA
Built 1964 Load: 18.1 t ADT: 700
Palmer Ln
PoorOver: CREEK
WEST OF BROWN LANE, Tangipahoa, LA
Built 1980 Load: 18.1 t ADT: 8
Lefort Bypass
PoorOver: CUT OFF BAYOU
0136 LOG MI FROM INT, Lafourche, LA
Built 1971 Load: 18.5 t ADT: 2,222
LA0039
PoorOver: INNER HARBOR NAV CANAL
2.3 MI E OF I-10, Orleans, LA
Built 1957 Load: 18.5 t ADT: 47,739
W. Congress Rd.
PoorOver: ILE DES CANNES COULEE
0.82 Mi W of La 93, Lafayette, LA
Built 1973 Load: 18.5 t ADT: 3,160
LA0147
PoorOver: DRY CREEK
0.4 MI S OF LA 507, Bienville, LA
Built 1980 Load: 18.5 t ADT: 1,988
Green Acres Blvd
PoorOver: TRIB. TO MACKS BAYOU
0.5 MI E OF HWY 3, Bossier, LA
Built 1979 Load: 18.5 t ADT: 120
HENDERSON BAYOU RD
PoorOver: HENDERSON BAYOU
.2 MI W of W PRIEN LAKE R, Calcasieu, LA
Built 1960 Load: 18.5 t ADT: 1,869
LA1131
PoorOver: DRAIN
2.8 MI S OF US 90, Jefferson Davis, LA
Built 1976 Load: 18.5 t ADT: 315
Showing 12,051-12,100 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.