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
I0010
FairOver: S.10TH ST. ON RAMP
I0010, East Baton Rouge, LA
Built 1963 Load: 49.0 t ADT: 8,250
I0110
FairOver: FLA ST. ON RAMP
I0110, East Baton Rouge, LA
Built 1963 Load: 49.0 t ADT: 8,250
Old Arcadia Rd
FairOver: TRIB TO CROWS CREEK
4.48 MI E OF US 79, Claiborne, LA
Built 1984 Load: 49.2 t ADT: 144
Bible Rd
FairOver: COLEWA BAYOU
1.1 MI S of LA 585, West Carroll, LA
Built 2003 Load: 49.2 t ADT: 88
LA0026
FairOver: INDIAN BRANCH
1.6 MI E of LA 113, Beauregard, LA
Built 1987 Load: 49.2 t ADT: 2,394
LA0959
FairOver: SCHLIE BAYOU
0.07 M NW LA 959&LA 958, East Feliciana, LA
Built 1959 Load: 49.6 t ADT: 1,679
US0090
FairOver: LA 182 & BNSF RR
1 Mile N of LA 3073, Lafayette, LA
Built 2018 Load: 49.9 t ADT: 62,432
I0020
FairOver: SALINE BAYOU
3.1 MI EAST OF LA 9, Bienville, LA
Built 1963 Load: 49.9 t ADT: 37,514
I0020
FairOver: SAM R FERTITTA STREET
1.0 MI EAST OF US I-49, Caddo, LA
Built 1964 Load: 49.9 t ADT: 98,318
I0020
FairOver: SAM R. FERTITTA STREET
0.24 MI West of LA 3036, Caddo, LA
Built 1964 Load: 49.9 t ADT: 98,318
LA0033
FairOver: Flathead Canal
1.89 Mi N. of Jct. 1-20, Lincoln, LA
Built 2009 Load: 49.9 t ADT: 11,331
CAMP RD
FairOver: I-20
3.6 MI EAST OF US 80, Ouachita, LA
Built 1993 Load: 49.9 t ADT: 3,770
I0020
FairOver: I20;RAMP 4
1.2 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 49.9 t ADT: 15,642
Crowe Rd
FairOver: LYON BAYOU
WEST CARROLL PARISH, West Carroll, LA
Built 1990 Load: 49.9 t ADT: 112
PARK RD
FairOver: HICKORY BRANCH
0.2 MI W of US 171, Beauregard, LA
Built 1975 Load: 49.9 t ADT: 4,030
FABACHER ROAD
FairOver: INTERSTATE 10
4.1 MI N OF LA 108, Calcasieu, LA
Built 1966 Load: 49.9 t ADT: 260
LA0017
FairOver: CREEK
3.50 M N of LA 4, Franklin, LA
Built 1972 Load: 49.9 t ADT: 4,194
US0165
FairOver: LITTLE RIVER RELIEF
2.6 MI SOUTH OF US 84, LaSalle, LA
Built 1956 Load: 49.9 t ADT: 3,518
I0110
FairOver: CONVENTION ST. ON RAMP
I0110, East Baton Rouge, LA
Built 1963 Load: 49.9 t ADT: 8,250
LA0070
FairOver: OFF RAMP
LA70 Offramp 0.5 M E LA44, St. James, LA
Built 1964 Load: 49.9 t ADT: 6,786
LA0070
FairOver: RAMP EB
LA70 EB ramp 0.5 M E LA44, St. James, LA
Built 1964 Load: 49.9 t ADT: 6,786
I0010
FairOver: BRIDGE 290 WBL
4.85 M W of LA 415&I-10, West Baton Rouge, LA
Built 1973 Load: 49.9 t ADT: 41,644
LA0021
FairOver: BOGGY BRANCH
LA0021, Washington, LA
Built 1965 Load: 49.9 t ADT: 6,741
UNNAMED ROAD
FairOver: ODOM CREEK
VE 815 703, Natchitoches, LA
Built 2005 Load: 49.9 t ADT: 40
I0049
FairOver: DRAINAGE CANAL
2.30 MI NORTH OF LA 182, St. Landry, LA
Built 1963 Load: 50.2 t ADT: 2,777
US0084
FairOver: JACKSON CREEK
4.2 MI EAST OF LA 763, De Soto, LA
Built 1951 Load: 50.2 t ADT: 4,394
LA0154
FairOver: BRANCH
0.18 MI S OF LA 516, Bienville, LA
Built 1951 Load: 50.5 t ADT: 429
LA0147
FairOver: DUDGEMONA RIVER
1.0 MI WEST OF US 167, Jackson, LA
Built 2003 Load: 50.5 t ADT: 3,480
I0020
FairOver: CREEK
4.35 MI EAST OF LA 33, Lincoln, LA
Built 1960 Load: 50.5 t ADT: 50,895
MERMENTAU RIVER RD
FairOver: KINGS BAYOU
0.60 MILES NORTH OF LA 82, Cameron, LA
Built 2015 Load: 50.5 t ADT: 82
SWEETLAKE CAMP RD.
FairOver: CREEK
0.8 MI S OF LA 384, Cameron, LA
Built 2015 Load: 50.5 t ADT: 128
I0010
FairOver: DRAIN
1.4 MI E of LA 99, Jefferson Davis, LA
Built 1964 Load: 50.5 t ADT: 838
LA0008
FairOver: CREEK
5.5 MI. EAST OF LA 119, Rapides, LA
Built 1996 Load: 50.5 t ADT: 1,226
LA0177
FairOver: DOLET BAYOU
3.54 MI NORTH OF LA 346, De Soto, LA
Built 1988 Load: 50.8 t ADT: 2,878
LA0034
FairOver: LAPINE CREEK BRIDGE
.76 MI EAST OF LA 546, Ouachita, LA
Built 1970 Load: 50.8 t ADT: 8,694
I0020
FairOver: CYPRESS CREEK
3.1 MI EAST OF LA 583, Richland, LA
Built 1969 Load: 50.8 t ADT: 38,890
I0020
FairOver: CYPRESS CREEK
3.1 MI EAST OF LA 583, Richland, LA
Built 1969 Load: 50.8 t ADT: 16,997
LA0006
FairOver: WINN CREEK
1.54 MI. WEST OF LA 6, Natchitoches, LA
Built 1967 Load: 50.8 t ADT: 5,328
LA3100
FairOver: US 167
INT. LA 3100 & US 167, Rapides, LA
Built 1969 Load: 50.8 t ADT: 2,714
I0110
FairOver: HOLLYWOOD OFF RAMP (N.B.
I0110, East Baton Rouge, LA
Built 1971 Load: 50.8 t ADT: 3,863
I0010
FairOver: FRONTAGE ROAD
I0010, West Baton Rouge, LA
Built 1968 Load: 50.8 t ADT: 52,159
LA0014
FairOver: CREEK
2.1 Miles West of LA 91, Vermilion, LA
Built 1958 Load: 51.2 t ADT: 1,717
LA0002-A
FairOver: CREEK
1.8 MI EAST OF LA 520, Claiborne, LA
Built 1972 Load: 51.5 t ADT: 389
US0071
FairOver: DRAINAGE DITCH
2.15 MI. NORTH OF LA 3170, Rapides, LA
Built 1973 Load: 51.5 t ADT: 5,157
LA0023
FairOver: SUNRISE PUMP STATION CAN
50.9 MI SOUTH OF LA 406, Plaquemines, LA
Built 1980 Load: 51.7 t ADT: 3,416
I0020
FairOver: BLACK LAKE BAYOU
.01 MI EAST WEBSTER/BIENV, Bienville, LA
Built 1960 Load: 51.7 t ADT: 37,514
I0020
FairOver: BLACK LAKE BAYOU
.01 MI EAST WEBSTER/BIENV, Bienville, LA
Built 1960 Load: 51.7 t ADT: 37,514
I0020
FairOver: CROWS CR RELIEF
0.30M EAST WEBSTER PH, Bienville, LA
Built 1960 Load: 51.7 t ADT: 37,514
I0020
FairOver: I20;RAMP N5
2.2 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 51.7 t ADT: 15,642
I0110
FairOver: CONVENTION ST. OFF RAMP
I0110, East Baton Rouge, LA
Built 1963 Load: 51.7 t ADT: 4,381
Showing 5,951-6,000 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.