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
Lower CC Rd
PoorOver: HORTON BAYOU
3.0 M NE of LA 63, East Feliciana, LA
Built 1999 Load: 20.0 t ADT: 44
Chinquapin St
PoorOver: CREEK
0.1 MI E OF INT 535, Livingston, LA
Built 1960 Load: 20.0 t ADT: 200
LA0301
PoorOver: PRIEST CANAL
.2 MI SOUTH OF LA 301, Jefferson, LA
Built 1979 Load: 20.1 t ADT: 317
CADDY DR
PoorOver: AMES CANAL NO.1
0.5MI.SOUTH OF LAPAL, Jefferson, LA
Built 1970 Load: 20.1 t ADT: 200
SAUVAGE AVE
PoorOver: AMES CANAL NO.1
0.5MI.SOUTH OF LAPAL, Jefferson, LA
Built 1970 Load: 20.1 t
JOURDAN RD
PoorOver: CITY STREET/RAILROAD
.15 MI S OF DOWNMAN ROAD, Orleans, LA
Built 1991 Load: 20.1 t
ROUSSELL ST
PoorOver: BAYOU TERREBONNE
0.01 M W OF EAST PARK, Terrebonne, LA
Built 1979 Load: 20.1 t ADT: 2,503
Jacobs Ave.
PoorOver: COULEE
0.5 Mi. N. of US 90, Acadia, LA
Built 1980 Load: 20.1 t ADT: 336
LA0092
PoorOver: CANAL
2.5 MI East OF LA 13, Acadia, LA
Built 1973 Load: 20.1 t ADT: 352
Failla Rd
PoorOver: COULEE
0.50 Mi E of Verot Sch Rd, Lafayette, LA
Built 1978 Load: 20.1 t ADT: 3,040
Waters Rd
PoorOver: BAYOU CARENCRO
0.1 M WEST OF GENDARME RD, Lafayette, LA
Built 1990 Load: 20.1 t ADT: 500
Marsh Rd
PoorOver: HEBERT CANAL
1.1 Mi W. of Prarie Rd, Vermilion, LA
Built 1973 Load: 20.1 t ADT: 25
LA0004
PoorOver: SALINE BAYOU
1.2 MI EAST OF LA 9, Bienville, LA
Built 1982 Load: 20.1 t ADT: 504
LA0002
PoorOver: BAYOU MACON
6.99 MI WEST OF US 65, East Carroll, LA
Built 1959 Load: 20.1 t ADT: 1,232
TOUCHET ROAD
PoorOver: GRAND MARAIS BAYOU
1.60 MI S of US 90, Jefferson Davis, LA
Built 1974 Load: 20.1 t ADT: 30
FDR 525
PoorOver: ANTOINE CREEK
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1965 Load: 20.1 t ADT: 50
US0167
PoorOver: BEAR CREEK
8.13 MI. NORTH OF LA 472, Grant, LA
Built 1975 Load: 20.1 t ADT: 11,712
LA0006
PoorOver: RED RIVER @ GRAND ECORE
2.3 MI. N OF JCT 3175, Natchitoches, LA
Built 1959 Load: 20.1 t ADT: 15,363
LA0431
PoorOver: BLACK BAYOU
2.16 MI N JCT US 61, Ascension, LA
Built 1983 Load: 20.1 t ADT: 9,608
Elliot Rd
PoorOver: CLAY CUT BAYOU
3 MI NE LA 42 I-10 I, East Baton Rouge, LA
Built 1970 Load: 20.1 t ADT: 6,230
Gurney Rd
PoorOver: DRAINAGE CANAL
0.1 Mi E of LA 410, East Baton Rouge, LA
Built 1966 Load: 20.1 t ADT: 4,025
Mchugh Rd
PoorOver: BRUSHY BAYOU
0.4 MI S OF BAKER BLVD, East Baton Rouge, LA
Built 1975 Load: 20.1 t ADT: 2,520
LA0077
PoorOver: INTERCOASTAL WATERWAY
LA0077, Iberville, LA
Built 1961 Load: 20.1 t ADT: 4,376
Sidney Rd
PoorOver: Port Allen Lock
0.01 Mi. N. of LA77, Iberville, LA
Built 1966 Load: 20.1 t ADT: 400
Section Rd
PoorOver: BAYOU POYDRAS
62 Ft E LA 413, West Baton Rouge, LA
Built 1973 Load: 20.1 t ADT: 500
N. Blvd.
PoorOver: CANAL
1.0 MILE SOUTH OF I 12 OF, St. Tammany, LA
Built 1974 Load: 20.1 t ADT: 500
LA0001
PoorOver: CO CANAL LOCKPORT
.1 MI NORTH OF LA 655, Lafourche, LA
Built 1959 Load: 20.4 t ADT: 9,831
LA0315
PoorOver: FALGOUT CANAL
11.0 MI SOUTH OF LA 661, Terrebonne, LA
Built 1964 Load: 20.4 t ADT: 2,378
Beau Pre Rd.
PoorOver: DE POCHES COULEE
0.70 Mi SW of US 90, Lafayette, LA
Built 1978 Load: 20.4 t ADT: 400
Galbert Rd.
PoorOver: COULEE
0.85 Mi W of I-10, Lafayette, LA
Built 1977 Load: 20.4 t ADT: 620
Airline Rd
PoorOver: Bayou Plaquemine Bruly
1.5 Mi. East of Ribbon Rd, St. Landry, LA
Built 1975 Load: 20.4 t ADT: 150
LA0087
PoorOver: CREEK
3.87 MI SOUTH OF LA 323, St. Mary, LA
Built 1952 Load: 20.4 t ADT: 9
LA0082
PoorOver: SEVENTH WARD CANAL
4.35 MI W. OF LA 35, Vermilion, LA
Built 1957 Load: 20.4 t ADT: 2,899
LA0153
PoorOver: DRAIN
4.19 MI NORTH OF LA 155, Bienville, LA
Built 1975 Load: 20.4 t ADT: 1,377
LA0155
PoorOver: DUKEDALL CREEK
1.3 MI NORTH OF LA 508, Bienville, LA
Built 1979 Load: 20.4 t ADT: 713
CRAWFORD RD
PoorOver: I-20
0.5 MI N OF LA 798-2, Bienville, LA
Built 1963 Load: 20.4 t ADT: 2,920
LA0527
PoorOver: FLAT RIVER
.05 MI E. OF US 71, Bossier, LA
Built 1981 Load: 20.4 t ADT: 1,951
McCance Rd
PoorOver: Posten Bayou
6.0 MI N OF HWY 537, Bossier, LA
Built 1988 Load: 20.4 t ADT: 90
LA0764
PoorOver: DRAIN
3.06 MI NORTH OF US 84, De Soto, LA
Built 1971 Load: 20.4 t ADT: 1,933
LA0151
PoorOver: CURRYS CREEK
2 MI NORTH OF I-20, Ouachita, LA
Built 1950 Load: 20.4 t ADT: 2,862
CRAWFORD RD
PoorOver: PETTICOAT BAYOU
3 MI S PINE GROVE, Ouachita, LA
Built 1978 Load: 20.4 t ADT: 300
LA0027
PoorOver: CAL SHIP CHANNEL
8.9 MI E of LA 82, Cameron, LA
Built 1965 Load: 20.4 t ADT: 552
LA0027
PoorOver: CAL.SHIP CHA/CAM.FERRY 2
9.2 MI E of LA 82, Cameron, LA
Built 1965 Load: 20.4 t ADT: 543
LA0009
PoorOver: EIGHT MILE CREEK
0.45 MI. NORTH OF LA 126, Natchitoches, LA
Built 1977 Load: 20.4 t ADT: 1,131
LA1204
PoorOver: FLAGON BAYOU
1.29 MI. E OF LA3225, Rapides, LA
Built 1973 Load: 20.4 t ADT: 2,440
Arleen Rd
PoorOver: SAUNDERS BAYOU
0.5 Mi W of LA 410, East Baton Rouge, LA
Built 1969 Load: 20.4 t ADT: 721
Milldale Rd
PoorOver: DRAINAGE BAYOU
2.9 M W of LA 409, East Baton Rouge, LA
Built 1959 Load: 20.4 t ADT: 377
Carson Rd
PoorOver: MILL CREEK
1.6 MI. SE. OF PRIDE, East Baton Rouge, LA
Built 1970 Load: 20.4 t ADT: 115
Pride-Baywood Rd
PoorOver: MILL CREEK
1.5 MI. E. OF PRIDE, East Baton Rouge, LA
Built 1960 Load: 20.4 t ADT: 1,118
LA0964
PoorOver: RIDDLE CREEK
2.0 M S of US 61&LA 954, West Feliciana, LA
Built 1958 Load: 20.4 t ADT: 1,650
Showing 12,201-12,250 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.