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
US0051
GoodOver: COOL CREEK
0.84 MI. NORTH OF LA 38, Tangipahoa, LA
Built 1935 Load: 24.5 t ADT: 2,403
LA0657
GoodOver: BAYOU LAFOURCHE
LA 657 BETWEEN LA 1 AND L, Lafourche, LA
Built 2013 Load: 24.6 t ADT: 443
JOLIET ST
GoodOver: PALMETTO AVENUE CANAL
0.25 MI. W. OF CARROLLTON, Orleans, LA
Built 1985 Load: 24.6 t
CAMBRONNE ST
GoodOver: PALMETTO AVENUE CANAL
0.2 MI. W. OF CARROLTON, Orleans, LA
Built 1985 Load: 24.6 t
CHERRY ST
GoodOver: PALMETTO AVENUE CANAL
0.2 MI. W. OF US 61, Orleans, LA
Built 1985 Load: 24.6 t
Faulk Rd.
GoodOver: LYONS POINT GULLY
0.18 MI. E. OF LA 13, Acadia, LA
Built 2012 Load: 24.6 t ADT: 384
Fournerat Rd.
GoodOver: Richards Gully
0.1 Mi. E. of La 91, Acadia, LA
Built 2012 Load: 24.6 t ADT: 1,296
Stakes Rd.
GoodOver: DE SAULE COULEE
0.8 Mi. E. of La 3070, Acadia, LA
Built 1999 Load: 24.6 t ADT: 24
I0049
GoodOver: MYRA-MIRTUS RD
I-49 OVER MYRA-MYRTIS RD, Caddo, LA
Built 2014 Load: 24.6 t ADT: 53,023
I0049
GoodOver: MYRA-MYRTIS RD
I-49 OVER MYRA-MYRTIS RD, Caddo, LA
Built 2014 Load: 24.6 t ADT: 6,846
LA3132
GoodOver: LA 526 BERT KOUNS IND. L
0.7 MI. E. OF LA 523, Caddo, LA
Built 2007 Load: 24.6 t ADT: 53,886
Robson Rd
GoodOver: CHICO BAYOU RELIEF
1.0 MI SW OF LA 1, Caddo, LA
Built 1997 Load: 24.6 t ADT: 150
Blanchard Latex Rd
GoodOver: TR TO SHETTLEWORTH BAYOU
0.3 MI. EAST OF LA 169, Caddo, LA
Built 2000 Load: 24.6 t ADT: 76
THIRTEENTH ST
GoodOver: CREEK
0.2 MILES SOUTH OF LA 26, Allen, LA
Built 2011 Load: 24.6 t ADT: 900
LA0012
GoodOver: CREEK
5.5 MI E OF LA 27, Beauregard, LA
Built 1993 Load: 24.6 t ADT: 3,360
Mary Barron Rd
GoodOver: BIG CREEK
1.07 M N OF DYSON CR. RD., Grant, LA
Built 1998 Load: 24.6 t ADT: 30
US0165
GoodOver: INDIAN CREEK
1.7 M N OF N JCT. LA 112, Rapides, LA
Built 2005 Load: 24.6 t ADT: 8,811
Riley Rd
GoodOver: PINE BAYOU
0.04 MI W OF LA 618, Franklin, LA
Built 2006 Load: 24.6 t ADT: 125
Zimmer Creek Rd
GoodOver: Zimmer Creek
1.1miles southwest LA 127, LaSalle, LA
Built 1999 Load: 24.6 t ADT: 50
Dupard St.
GoodOver: Little Bayou Castine
0.65 Mi E. of La 59, St. Tammany, LA
Built 1998 Load: 24.6 t ADT: 400
LA0016
GoodOver: CREEK
7.4 MILES E OF PARISH LN, Washington, LA
Built 2003 Load: 24.6 t ADT: 8,684
US0090
GoodOver: DRAIN CANAL
4.0 MI WEST OF US 90B, Jefferson, LA
Built 1940 Load: 24.9 t ADT: 28,780
Guilbeau Rd.
GoodOver: DRAINAGE
.1 MI E. OF LA 3073, Lafayette, LA
Built 1984 Load: 24.9 t ADT: 1,478
MLK Jr. Dr.
GoodOver: Bayou Tesson
0.1 Mi. W. of La 182, St. Landry, LA
Built 1965 Load: 24.9 t ADT: 1,000
Dalton Rd
GoodOver: Isle Marrone Canal
2.3 Mi W of LA 695, Vermilion, LA
Built 1987 Load: 24.9 t ADT: 830
Vanveville Rd
GoodOver: Willow Chute Bayou
1.1 mi e of la 3, Bossier, LA
Built 2018 Load: 24.9 t ADT: 870
ANTRIM ROAD
GoodOver: LITTLE CYPRESS ROAD
0.70 MI E OF LA 3, Bossier, LA
Built 2019 Load: 24.9 t ADT: 100
Daleen Rd
GoodOver: FiFi Bayou Trib
0.13 SOUTH OF JCT 80, Bossier, LA
Built 2013 Load: 24.9 t ADT: 20
Tall Timbers Blvd
GoodOver: Tall Timbers Lateral
0.01 MI N. OF US 80, Bossier, LA
Built 2003 Load: 24.9 t ADT: 2,000
LOUIS WHITE RD
GoodOver: GALION BAYOU
2.5 MI. EAST OF US 165, Morehouse, LA
Built 2012 Load: 24.9 t ADT: 100
COONEY BONNETT RD
GoodOver: BOGALOOSA CREEK
0.2 MI S OF LA 34, Ouachita, LA
Built 2017 Load: 24.9 t ADT: 469
RIFLE RANGE RD
GoodOver: BENNET BAYOU
UNDER SICARD OVERPASS, Ouachita, LA
Built 2011 Load: 24.9 t ADT: 400
CLIFTON ROAD
GoodOver: GULLY
0.90 MI W OF LA 101, Jefferson Davis, LA
Built 2004 Load: 24.9 t ADT: 110
Maricelli Rd
GoodOver: BOURBEAUX BAYOU
MARICELLI ROAD 1.1 MILES, Natchitoches, LA
Built 2000 Load: 24.9 t ADT: 103
Dan Tripplett Rd
GoodOver: LITTLE BAYOU CLEAR
0.26 M. N. OF CASTOR PLUN, Rapides, LA
Built 1988 Load: 24.9 t ADT: 100
PLAINVIEW RD
GoodOver: TORO CREEK
2.65 MI. EAST OF US 171, Sabine, LA
Built 1992 Load: 24.9 t ADT: 400
LA0127
GoodOver: CREEK
12.72 M. NW CALDWELL LINE, Winn, LA
Built 2010 Load: 24.9 t ADT: 183
Neathery Rd
GoodOver: CREEK
0.5M E of LA 849, Caldwell, LA
Built 2001 Load: 24.9 t ADT: 50
Posey-Webb Camp Hw
GoodOver: FORD CREEK
0.7 Mi E of Dixie Springs, Catahoula, LA
Built 1998 Load: 24.9 t ADT: 100
Garan Dr
GoodOver: CREEK
450 south of US 84E, LaSalle, LA
Built 1969 Load: 24.9 t ADT: 105
Sunshine Rd
GoodOver: BAYOU FUNNY LOUIS
0.07M FROM 468 TO 649, LaSalle, LA
Built 1992 Load: 24.9 t ADT: 60
Blount Rd
GoodOver: GIBBENS LATERAL
1.0 MI WEST OF PLANK RD, East Baton Rouge, LA
Built 1987 Load: 24.9 t ADT: 5,477
Overton Ford Rd
GoodOver: COMITE RIVER
1 MILE E. OF LA 955 & OVE, East Feliciana, LA
Built 2006 Load: 24.9 t ADT: 542
LA0441
GoodOver: CREEK
5.25 MILES NORTH OF 442, Livingston, LA
Built 2004 Load: 24.9 t ADT: 4,270
Lake Rd
GoodOver: POWELL CANAL
2.05 MILES SOUTH OF LA 43, St. Tammany, LA
Built 2010 Load: 24.9 t ADT: 659
LA0010
GoodOver: CREEK
8.4 MI. EAST OF JCT US 51, Tangipahoa, LA
Built 2005 Load: 24.9 t ADT: 1,335
Sunny Hill Rd
GoodOver: DEERLICK CREEK
2.0M NORTH OF LA 1056, Washington, LA
Built 1993 Load: 24.9 t ADT: 469
LA0020
GoodOver: GRAND BAYOU
07.62 MILES NORTH OF LA 3, Lafourche, LA
Built 2012 Load: 25.3 t ADT: 8,298
HWY 645 Local
GoodOver: BAYOU BOUDREAUX
2.3M NW OF LA 1, Lafourche, LA
Built 1993 Load: 25.3 t ADT: 198
S. Leblanc St.
GoodOver: COULEE
0.7 MILES EAST OF LA 1115, Acadia, LA
Built 2001 Load: 25.3 t ADT: 480
Showing 6,801-6,850 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.