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
LA0001
FairOver: MORGANZA SPILLWAY
LA0001, Pointe Coupee, LA
Built 1954 Load: 24.0 t ADT: 3,874
US0090-B
FairOver: RAMP MA-3
1.0 MI EAST OF LA 23, Jefferson, LA
Built 1983 Load: 24.3 t ADT: 15,955
WALL BLVD
FairOver: BAYOU FATMA
.80 MI S. OF LAPALCO BLVD, Jefferson, LA
Built 1988 Load: 24.3 t ADT: 8,000
LA0729
FairOver: VERMILION RIVER
0.4 MI E of LA 182, Lafayette, LA
Built 1982 Load: 24.3 t ADT: 2,293
LA0089
FairOver: COULEE DES POCHES
0.1 MI WEST OF US 90, Lafayette, LA
Built 1976 Load: 24.3 t ADT: 16,098
LA0003
FairOver: COLLINSBURG CREEK
4.27 MI NORTH OF LA 160, Bossier, LA
Built 1934 Load: 24.3 t ADT: 3,399
Pine Hill Rd
FairOver: TRIB. TO CHOCTAW BAYOU
0.7 MI. EAST OF LA 173, Caddo, LA
Built 1969 Load: 24.3 t ADT: 45
Kimbletown Rd
FairOver: MULBBERRY CREEK
2.3M NORTH OF LA 152, Claiborne, LA
Built 1990 Load: 24.3 t ADT: 145
LA0191
FairOver: BIG BRANCH
2.14 MI NORTH OF LA 763, De Soto, LA
Built 1958 Load: 24.3 t ADT: 1,093
US0071
FairOver: MORGAN CREEK
2.9 MI NORTH OF LA 783, Red River, LA
Built 1950 Load: 24.3 t ADT: 2,544
LA0160
FairOver: CREEK
3.6 MI EAST OF LA 3008, Webster, LA
Built 1957 Load: 24.3 t ADT: 502
LA0556
FairOver: HUEY BRANCH
1.71MI WEST OF LA 144, Jackson, LA
Built 1970 Load: 24.3 t ADT: 376
LA0577
FairOver: LA 577 OVER I-20
LA 577 OVER I-20, Madison, LA
Built 1971 Load: 24.3 t ADT: 184
US0165
FairOver: LA 594&ICRR
US 165 OVER I-20, Ouachita, LA
Built 1966 Load: 24.3 t ADT: 29,759
LA0015
FairOver: MUDDY BAYOU
4.03 MI WEST OF LA 137, Richland, LA
Built 1938 Load: 24.3 t ADT: 2,198
CROW FARM RD
FairOver: GLAZE CREEK
5.7 M EAST INT 800, Union, LA
Built 1990 Load: 24.3 t ADT: 201
LA0027
FairOver: CREEK
4.17 MI. N OF INT LA12, Beauregard, LA
Built 1979 Load: 24.3 t ADT: 4,695
WARD LINE RD
FairOver: GOVERNMENT DITCH
3.8 MI SOUTH OF LA 14, Calcasieu, LA
Built 1987 Load: 24.3 t ADT: 1,326
N. KINNY AVE
FairOver: ENGLISH BAYOU LATERAL 14
0.2 MI N OF DAVID ST, Calcasieu, LA
Built 2001 Load: 24.3 t ADT: 50
LA0395
FairOver: DRAIN
2.0 MI NORTH OF I-10, Jefferson Davis, LA
Built 1957 Load: 24.3 t ADT: 3,596
FDR 287
FairOver: LONG BRANCH OVERFLO
NATIONAL FOREST ROAD, Rapides, LA
Built 1962 Load: 24.3 t ADT: 100
FDR 556
FairOver: CREEK
LOGMI 0.90 FR 546 TO, Grant, LA
Built 1960 Load: 24.3 t ADT: 34
BAILEY RD
FairOver: BUNDICK CREEK
2.44 MILES EAST OF US 171, Vernon, LA
Built 1984 Load: 24.3 t ADT: 150
SARTOR ST
FairOver: CASTOR BAYOU TRIB.
0.29 M. S. OF BOONE ST, Vernon, LA
Built 1975 Load: 24.3 t ADT: 80
Wildcow Bayou Rd
FairOver: Cocodrie Bayou
LOGMI 3.60 E FROM Hwy 129, Concordia, LA
Built 1984 Load: 24.3 t ADT: 110
Wildcow Rd
FairOver: Cocodrie Bayou
LOG MI 2.55 SE OF Hwy 129, Concordia, LA
Built 1984 Load: 24.3 t ADT: 110
I0110
FairOver: LA 408; BADLEY ST; PARK
HARDING BLVD. TO LA 19, East Baton Rouge, LA
Built 1982 Load: 24.3 t ADT: 64,059
I0010
FairOver: BRIDGE 251 FR.RD
1.4 M E of LA 77, Iberville, LA
Built 1974 Load: 24.3 t ADT: 752
I0010
FairOver: LA 1 UPRR LEBLANC RD
I0010, West Baton Rouge, LA
Built 1968 Load: 24.3 t ADT: 18,560
I0012
FairOver: COLYELL CREEK
I0012, Livingston, LA
Built 1969 Load: 24.3 t ADT: 78,208
LA0020
FairOver: BAYOU LAFOURCHE
.01 MI WEST OF LA 308, Lafourche, LA
Built 1967 Load: 24.5 t ADT: 7,822
LA0023
FairOver: ALGIERS OUTFALL CANAL
3.2 MI SE OF WESTBANK EXP, Plaquemines, LA
Built 1968 Load: 24.5 t ADT: 25,594
LA0092
FairOver: LAZY POINT CANAL
3.6 MI E OF LA 1119, Acadia, LA
Built 1962 Load: 24.5 t ADT: 444
LA0367
FairOver: BAYOU PLAQUEMINE BRULE
1.6 MI NORTH OF LA 1113, Acadia, LA
Built 1962 Load: 24.5 t ADT: 2,465
LA0368
FairOver: BAYOU MALLET
0.28 MI EAST OF LA 755, Acadia, LA
Built 1962 Load: 24.5 t ADT: 398
LA0347
FairOver: POINT CLAIRE CA
1.1 Mi. N. of La 740, St. Landry, LA
Built 1965 Load: 24.5 t ADT: 9,963
LA0741
FairOver: BAYOU PORTAGE
4.08 MI SOUTH OF LA 103, St. Landry, LA
Built 1959 Load: 24.5 t ADT: 1,629
LA0746
FairOver: BAYOU BEOUF
0.01 MI NORTH OF LA 745, St. Landry, LA
Built 1962 Load: 24.5 t ADT: 66
Sligo Rd
FairOver: Hogskin Lake Creek
0.1 MI E OF LA 612, Bossier, LA
Built 1989 Load: 24.5 t ADT: 4,000
LA0538
FairOver: TIGER BRANCH
1.8 MI NORTH OF NORTH INT, Caddo, LA
Built 1924 Load: 24.5 t ADT: 962
LA0481
FairOver: COW BAYOU
4.31 MI NORTH OF LA 191, De Soto, LA
Built 1962 Load: 24.5 t ADT: 469
LA0148
FairOver: COLON CREEK
2.76 MI WEST OF LA 146, Jackson, LA
Built 1955 Load: 24.5 t ADT: 532
LA0584
FairOver: COW BAYOU
4.0 MI EAST OF US 425, Richland, LA
Built 1954 Load: 24.5 t ADT: 990
LA0115
FairOver: COULEE DES GRUES
1.18 MILES SOUTH OF LA 1, Avoyelles, LA
Built 1961 Load: 24.5 t ADT: 5,309
LA0471
FairOver: SUMMERFIELD BRANCH
1.22 MI NORTH OF US 71, Grant, LA
Built 1954 Load: 24.5 t ADT: 432
LA0001-X
FairOver: CANE RIVER
0.19 MI. NORTH OF LA 1223, Natchitoches, LA
Built 1936 Load: 24.5 t ADT: 11,003
US0165
FairOver: SPRING CREEK
2.15 MI. NORTH OF LA 113, Rapides, LA
Built 1991 Load: 24.5 t ADT: 11,113
LA1228
FairOver: PORT DE LUCE CREEK
.65 MI NORTH OF LA 34, Winn, LA
Built 1967 Load: 24.5 t ADT: 362
Chestnut St
FairOver: NORTHDALE CANAL
0.2 MI W of LA 3164, East Baton Rouge, LA
Built 1960 Load: 24.5 t ADT: 1,544
LA0042
FairOver: BLOOD RIVER
LA0042, Livingston, LA
Built 1961 Load: 24.5 t ADT: 1,783
Showing 1,851-1,900 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.