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
Perkins Rd
GoodOver: PERKINS RD POND
3.2 MI N. OF FELIXVILLE, East Feliciana, LA
Built 2003 Load: 35.6 t ADT: 24
James Chapel Rd
GoodOver: Blood River
1.2 MILES WEST OF LA. 43, Livingston, LA
Built 2014 Load: 35.6 t ADT: 700
Pleasant Hill Rd
GoodOver: DEER LICK CREEK
2.2 MI N OF LA 1056, Washington, LA
Built 2001 Load: 35.6 t ADT: 580
LA0001
GoodOver: CAMINADA BAY
9.5 MI EAST OF LA 3090, Jefferson, LA
Built 2012 Load: 36.0 t ADT: 3,305
VOLPE DR
GoodOver: 20 ARPENT CANAL
0.4 MI N OF LA 39, St. Bernard, LA
Built 2015 Load: 36.0 t ADT: 220
BJ Ln.
GoodOver: BAYOU NEZPIQUE
1.47 Mi N of La 3277, Evangeline, LA
Built 2007 Load: 36.0 t ADT: 78
Little Teche Rd
GoodOver: COULEE ROUGE
0.9 Mi N of LA 31, St. Landry, LA
Built 2011 Load: 36.0 t ADT: 50
US0190
GoodOver: BAYOU COURTABLEAU W.B.
3.70 Mi W of US 71, St. Landry, LA
Built 2005 Load: 36.0 t ADT: 20,176
ROY RD
GoodOver: LOGAN BAYOU
0.2 MI. SOUTH OF LA 173, Caddo, LA
Built 2012 Load: 36.0 t ADT: 900
Keithvil-Sprrdg Rd
GoodOver: TRIB. TO BUCHANAN BAYOU
1.3 MILES WEST OF OLD MAN, Caddo, LA
Built 2007 Load: 36.0 t ADT: 140
LA0514
GoodOver: GRAND BAYOU RELIEF
1.0 MI. E. OF LA 788, Red River, LA
Built 2013 Load: 36.0 t ADT: 615
LA0514
GoodOver: GRAND BAYOU
0.9 MI E. OF LA 788, Red River, LA
Built 2013 Load: 36.0 t ADT: 615
LA0002
GoodOver: BODCAU BAYOU
2.13 MILES WEST OF JCT OF, Webster, LA
Built 2012 Load: 36.0 t ADT: 1,723
MARTIN MUSE RD
GoodOver: BULL BAYOU
2.0 MI N of LA 580, East Carroll, LA
Built 2010 Load: 36.0 t ADT: 75
US0167
GoodOver: MIDDLE SLOUGH
1.73 MI. SOUTH OF LA 15, Union, LA
Built 2012 Load: 36.0 t ADT: 422
US0167
GoodOver: NORTH SLOUGH
1.56 MI. SOUTH OF LA 15, Union, LA
Built 2012 Load: 36.0 t ADT: 422
US0165
GoodOver: BAYOU
0.4 MI N of LA 101, Jefferson Davis, LA
Built 2008 Load: 36.0 t ADT: 9,883
US0165
GoodOver: BAYOU
0.5 MI N of LA 101, Jefferson Davis, LA
Built 2008 Load: 36.0 t ADT: 8,453
LA0468
GoodOver: BAYOU CASTOR RELIEF
0.62 MILES EAST OF US 171, Vernon, LA
Built 2009 Load: 36.0 t ADT: 2,896
LA0468
GoodOver: CREEK
1.04 MILES EAST OF US 171, Vernon, LA
Built 2009 Load: 36.0 t ADT: 2,896
LA0468
GoodOver: LIBERTY CREEK
2.3 MI. EAST OF US 171, Vernon, LA
Built 2010 Load: 36.0 t ADT: 2,896
BIG LAKE MGT RD
GoodOver: BIG ROARING BAYOU
0.407 MI N OF LA.4, Franklin, LA
Built 2017 Load: 36.0 t ADT: 30
Lanier Dr
GoodOver: CANAL
LANIER DR. 0.2 OF A MILE, East Baton Rouge, LA
Built 2012 Load: 36.0 t ADT: 4,700
Central Throughway
GoodOver: ILLINOIS CENTRAL RR.
0.7 MI. N. OF US190, East Baton Rouge, LA
Built 2011 Load: 36.0 t ADT: 10,400
LA0010
GoodOver: GRANTS BAYOU
1.867 MILES WEST OF US 61, West Feliciana, LA
Built 2010 Load: 36.0 t ADT: 5,763
LA0441
GoodOver: TICKFAW RIVER
0.1 MILES NORTH OF JCT OF, Livingston, LA
Built 2011 Load: 36.0 t ADT: 4,270
Butler Rd
GoodOver: BRIDGE OVER SPRING CREEK
LA 449 & LA 37 1.5 WEST, St. Helena, LA
Built 1985 Load: 36.0 t ADT: 80
Whitmar Dr
GoodOver: CREEK
N OAK-WHITMAR DR. 0.1 N.E, Tangipahoa, LA
Built 1985 Load: 36.0 t ADT: 1,200
LA0023
GoodOver: VERRET CANAL
1.9 MI SOUTH OF US 90B, Jefferson, LA
Built 1975 Load: 36.3 t ADT: 25,594
11TH ST
GoodOver: 3 MILE CANAL
0.1 MI. EAST OF MANHATTAN, Jefferson, LA
Built 1985 Load: 36.3 t ADT: 500
LA0308
GoodOver: LA657-ICWW-STR@LAROSE
.5 MI NORTH OF LA 1, Lafourche, LA
Built 1975 Load: 36.3 t ADT: 12,186
LA0649
GoodOver: BAYOU LAFOURCHE
.01 MI NORTH OF LA 1, Lafourche, LA
Built 1996 Load: 36.3 t ADT: 1,991
US0090
GoodOver: RAMP A
0.50 M NORTH OF I-10, Orleans, LA
Built 1989 Load: 36.3 t ADT: 47,738
I0610
GoodOver: OFF RP TO NEW ORLEANS
.02 MI EAST OF LA 3071, Orleans, LA
Built 1975 Load: 36.3 t ADT: 7,620
I0610
GoodOver: ON RP FROM ELYSIAN FIELD
.4 MI EAST OF LA 3071, Orleans, LA
Built 1975 Load: 36.3 t ADT: 7,620
I0610
GoodOver: OFF RP TO ELYSIAN FIELDS
.4 MI EAST OF LA 3071, Orleans, LA
Built 1975 Load: 36.3 t ADT: 7,620
I0610
GoodOver: OFF RP TO ELYSIAN FIELDS
.6 MI EAST OF LA 3071, Orleans, LA
Built 1975 Load: 36.3 t ADT: 7,620
I0610
GoodOver: ON RP FROM ELYSIAN FIELD
.7 MI EAST OF LA 3071, Orleans, LA
Built 1975 Load: 36.3 t ADT: 7,620
ALMONASTER AVE
GoodOver: I-510
.54 MI SOUTH OF US 90, Orleans, LA
Built 1992 Load: 36.3 t ADT: 1,710
I0510
GoodOver: GROUND
1.27M NORTH OF US 90, Orleans, LA
Built 1992 Load: 36.3 t ADT: 7,620
I0010
GoodOver: CITY STREETS/RR
2.4 MI EAST OF LA 39, Orleans, LA
Built 1992 Load: 36.3 t ADT: 5,696
CORINNE DR
GoodOver: 20 ARPENT CANAL
0.5 MILE NORTH OF JUDGE P, St. Bernard, LA
Built 2010 Load: 36.3 t ADT: 881
I0310
GoodOver: RR/CANAL
0.25 M SOUTH OF US 61, St. Charles, LA
Built 1992 Load: 36.3 t ADT: 15,642
LA0655
GoodOver: ISLE JEAN CHARLES CANAL
8.51 MI S OF LA 55, Terrebonne, LA
Built 1988 Load: 36.3 t ADT: 2,337
Pointe Noir Rd
GoodOver: Plaq Brule Bayou Relief
1.31 MI. NW. OF LA 35, Acadia, LA
Built 2015 Load: 36.3 t ADT: 240
US0190
GoodOver: BAYOU NEZPIEQUE BRIDGE
2.32 Mi E of LA 26, Acadia, LA
Built 2003 Load: 36.3 t ADT: 6,816
Welch Rd.
GoodOver: COULEE
0.2 Mi. E. of La 98, Acadia, LA
Built 1993 Load: 36.3 t ADT: 48
Tornado Rd.
GoodOver: Coulee
1.3 MI W of LA 95, Acadia, LA
Built 1998 Load: 36.3 t ADT: 144
Cemetery Rd.
GoodOver: CREEK
0.70 Mi W of US 167, Evangeline, LA
Built 1986 Load: 36.3 t ADT: 402
Chemin Metairie
GoodOver: Parc Perdu Bayou
.1 M West of Detente Rd., Lafayette, LA
Built 2008 Load: 36.3 t ADT: 2,284
Showing 8,951-9,000 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.