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
LA0112
GoodOver: BEAVER CREEK
1.0 MI. EAST OF US 165, Rapides, LA
Built 1971 Load: 34.5 t ADT: 2,304
Broadway Ave
GoodOver: I-49 RAMP UPR/R HYNSON B
BROADWAY INTG., Rapides, LA
Built 1989 Load: 34.5 t ADT: 1,460
I0049
GoodOver: HYNSON BAYOU
1.11 MI. SOUTH OF US 167B, Rapides, LA
Built 1995 Load: 34.5 t ADT: 31,285
I0049
GoodOver: RAMP E1A CITY STS.
0.91 MI. SOUTH OF US 71, Rapides, LA
Built 1992 Load: 34.5 t ADT: 15,642
US0061
GoodOver: BAYOU FRANCOIS
0.85 M SE of US 61&LA 429, Ascension, LA
Built 1976 Load: 34.5 t ADT: 16,379
US0061
GoodOver: NEW RIVER
0.03 M NW of US 61&LA 429, Ascension, LA
Built 1976 Load: 34.5 t ADT: 24,014
US0061
GoodOver: MONTE SANO BAYOU
0.3 M W of US 61&LA 67, East Baton Rouge, LA
Built 1976 Load: 34.5 t ADT: 10,596
I0110
GoodOver: Calumet St
1.2 Mi. N. of LA 67, East Baton Rouge, LA
Built 1970 Load: 34.5 t ADT: 8,250
LA0421
GoodOver: MIDDLE FORK THOMPSON CRK
7.92 MILES E. OF US 61, West Feliciana, LA
Built 1995 Load: 34.5 t ADT: 739
LA0968
GoodOver: LITTLE BAYOU SARA
LA0968, West Feliciana, LA
Built 1981 Load: 34.5 t ADT: 232
I0010
GoodOver: WB OFF RAMP (US51)
10.4 Mi. W. of I-310, St. John the Baptist, LA
Built 1972 Load: 34.5 t ADT: 7,896
I0055
GoodOver: I-55 ON RAMP NORTH @ US5
0.1 M W OF US 51, St. John the Baptist, LA
Built 1975 Load: 34.5 t ADT: 15,642
US0190
GoodOver: ABITA RIVER
2.1 MILES NORTH OF I-12, St. Tammany, LA
Built 1975 Load: 34.5 t ADT: 14,668
US0190
GoodOver: LA 22
2.4 Mi S of I-12, St. Tammany, LA
Built 1981 Load: 34.5 t ADT: 66,360
LA0021
GoodOver: WRIGHTS CREEK
LA0021, St. Tammany, LA
Built 1975 Load: 34.5 t ADT: 8,257
I0012
GoodOver: TANGIPAHOA RIVER
I0012, Tangipahoa, LA
Built 1975 Load: 34.5 t ADT: 17,665
FIRETOWER Rd
GoodOver: I-12
I0012, Tangipahoa, LA
Built 1975 Load: 34.5 t ADT: 5,250
LA0010
GoodOver: BOGUE CHITTO RELIEF
0.05 MI E LA 440 INTER., Washington, LA
Built 1996 Load: 34.5 t ADT: 12,018
BIA RT. 3015
GoodOver: COULLE DE GRUES
IN MARKSVILLE LA, Avoyelles, LA
Built 2015 Load: 34.7 t ADT: 350
US0090
GoodOver: LA 85
3.40 Mi W of LA 688, Iberia, LA
Built 2011 Load: 34.7 t ADT: 10,090
US0090
GoodOver: LA 85
6.10 MI E of LA 83, Iberia, LA
Built 2011 Load: 34.7 t ADT: 8,994
Theriot Rd.
GoodOver: QUEUE DE TORTUE BAYOU
1.1 Mi E of LA 35, Lafayette, LA
Built 2015 Load: 34.7 t ADT: 66
LA0363
GoodOver: DRAINAGE CANAL
2.2 MI N of LA 748, St. Landry, LA
Built 2009 Load: 34.7 t ADT: 777
US0190
GoodOver: BAYOU DARBONNE E.B.
7.0 MI EAST OF LA 741, St. Landry, LA
Built 2004 Load: 34.7 t ADT: 13,476
Capritto Rd
GoodOver: COULEE
0.31M NORTH OF LA 96, St. Martin, LA
Built 1991 Load: 34.7 t ADT: 503
Harris Rd
GoodOver: CHOCTAW CREEK
5.0 MI EAST OF US 79, Claiborne, LA
Built 2007 Load: 34.7 t ADT: 250
LA0499
GoodOver: CREEK
7.85 MI SOUTH OF LA4, Jackson, LA
Built 2011 Load: 34.7 t ADT: 114
LA0499
GoodOver: CANEY CREEK
7.64 MI SOUTH OF LA4, Jackson, LA
Built 2011 Load: 34.7 t ADT: 114
LA0499
GoodOver: CREEK
7.54 MI SOUTH OF LA 4, Jackson, LA
Built 2011 Load: 34.7 t ADT: 114
CROW FARM RD
GoodOver: GLAZE CREEK
5.9 MI. E. INT. 800, Union, LA
Built 1983 Load: 34.7 t ADT: 201
LIGHTNING ST
GoodOver: DINDE BAYOU
0.1 MI N of MUSTANG ST., Calcasieu, LA
Built 2017 Load: 34.7 t ADT: 150
NO DATA ENTERED
GoodOver: KISATCHIE BAYOU TRIBUTAR
NO DATA ENTERED, Natchitoches, LA
Built 2014 Load: 34.7 t ADT: 50
LA0491
GoodOver: RAT BOIS BAYOU
2.5 MI. NORTH OF LA 495, Natchitoches, LA
Built 2010 Load: 34.7 t ADT: 237
LA0463
GoodOver: THOMPSON BRANCH
7.9 MI N OF LA 10, Vernon, LA
Built 2017 Load: 34.7 t ADT: 482
LA0572
GoodOver: CREEK
0.10 M W of LA 572, Franklin, LA
Built 2003 Load: 34.7 t ADT: 265
Harry P William Dr
GoodOver: MONTE SANO BAYOU
0.03 MI E VETERANS BLVD, East Baton Rouge, LA
Built 1987 Load: 34.7 t ADT: 10,626
LA0327
GoodOver: BAYOU PAUL
0.5 MI N OF LA.75, Iberville, LA
Built 2016 Load: 34.7 t ADT: 2,969
LA0010
GoodOver: MISSISSIPPI RIVER
3.9 MILES EAST OF US 61, West Feliciana, LA
Built 2011 Load: 34.7 t ADT: 5,763
Forrest Delatte
GoodOver: Grays Creek
1 Mi W. of LA 1026, Livingston, LA
Built 2022 Load: 34.7 t ADT: 4,195
J. Stuart Rd
GoodOver: BOGUE LUSA CREEK
.25 TENTHS N OF LA 436&62, Washington, LA
Built 2002 Load: 34.7 t ADT: 376
LA0182
GoodOver: DRAIN CANAL
.7 MILES EAST OF LA 308, Lafourche, LA
Built 2011 Load: 35.0 t ADT: 5,783
ALLEN TOUSSAINT B
GoodOver: ORLEANS AVENUE CANAL
0.01 MI E OF ORLEANS AVE, Orleans, LA
Built 2001 Load: 35.0 t
LA0020
GoodOver: TIGER BAYOU
0.6 MI E OF LA 182, Terrebonne, LA
Built 1984 Load: 35.0 t ADT: 2,471
LA0020
GoodOver: CANAL
1.6 M E OF LA 182, Terrebonne, LA
Built 1984 Load: 35.0 t ADT: 2,471
LA0020
GoodOver: DRAINAGE CANAL
9.3 MI E OF LA 182, Terrebonne, LA
Built 1984 Load: 35.0 t ADT: 3,696
US0090
GoodOver: TIGER BAYOU
3.95 MI EAST OF LA 662, Terrebonne, LA
Built 1998 Load: 35.0 t ADT: 4,014
Indigo Rd.
GoodOver: Bayou Plaquemine
1.83 Mi. E. of La 13, Acadia, LA
Built 2005 Load: 35.0 t ADT: 10
Napp St.
GoodOver: Coulee
0.3 MI NW of LA 35, Acadia, LA
Built 2017 Load: 35.0 t ADT: 672
Wall St
GoodOver: COULEE
.07 MI E of Delta RD, Lafayette, LA
Built 2011 Load: 35.0 t ADT: 146
LA0004
GoodOver: SALINE BAYOU RELIEF 2
1.46 MI EAST OF LA 9, Bienville, LA
Built 2010 Load: 35.0 t ADT: 504
Showing 8,751-8,800 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.