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
LA0021
GoodOver: BOGUE CHITTO RV RELIEF
0.9 M N OF LA 41, St. Tammany, LA
Built 1975 Load: 38.1 t ADT: 7,481
I0012
GoodOver: BAYOU LACOMBE
0.3 M W OF LA 434, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 79,502
I0012
GoodOver: BAYOU LACOMBE
0.3 M W OF LA 434, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 29,236
I0055
GoodOver: OFF RAMP US 51 MANCHAC
9.9 M S OF LA 22, Tangipahoa, LA
Built 1979 Load: 38.1 t ADT: 8,115
I0012
GoodOver: NATALBANY RIVER
I0012, Tangipahoa, LA
Built 1970 Load: 38.1 t ADT: 21,300
LA4361
GoodOver: LA 436-1 OVER PUSHEPATAP
LA 436-1 LOG MI 16.63, Washington, LA
Built 1986 Load: 38.1 t ADT: 1,145
US0090
GoodOver: GROUND
0.5 MI SOUTHWEST OF MISSI, Jefferson, LA
Built 2013 Load: 38.2 t ADT: 6,786
US0090
GoodOver: GROUND
0.5 MI W OF MISSISSIPPI R, Jefferson, LA
Built 2013 Load: 38.2 t ADT: 55,210
LA0428
GoodOver: ALGIERS CANAL
0.40 MILE SOUTH EAST OF U, Orleans, LA
Built 2012 Load: 38.2 t ADT: 626
S Broad Ave
GoodOver: WASHINGTON AVE CANAL
0.75 MI S OF I-10, Orleans, LA
Built 1955 Load: 38.2 t
TULLIS DR
GoodOver: CANAL
1.2M EAST OF BEHRMAN HWY, Orleans, LA
Built 1989 Load: 38.2 t ADT: 500
FLORIDA AVE
GoodOver: INNER HARBOR NAVIGATION
0.4 MI E OF FRANCE RD, Orleans, LA
Built 2004 Load: 38.2 t
LA0632
GoodOver: MAIN CANAL
.01 MILE SOUTH OF LA 306, St. Charles, LA
Built 2011 Load: 38.2 t ADT: 1,297
ST ELOI RD
GoodOver: DULARGE BAYOU
0.01 MI W OF LA 315, Terrebonne, LA
Built 2013 Load: 38.2 t ADT: 1,177
Evangeline Rd
GoodOver: PRONG BAYOU
1.15 Mi S of Agate Rd, Evangeline, LA
Built 2013 Load: 38.2 t ADT: 45
Argus Rd.
GoodOver: COULEE
.1 Mi E of Grand Ave, Lafayette, LA
Built 2004 Load: 38.2 t ADT: 60
Venduer Rd.
GoodOver: COULEE
0.41 Mi SE of La 3025, Lafayette, LA
Built 1999 Load: 38.2 t ADT: 100
LA0751
GoodOver: DRAINAGE LATERAL
2.78 MI WEST OF LA 35, St. Landry, LA
Built 1970 Load: 38.2 t ADT: 666
Point Verte Rd
GoodOver: COULEE
0.4 MI NW of LA 103, St. Landry, LA
Built 2005 Load: 38.2 t ADT: 385
LA0323
GoodOver: Bayou Teche
0.2 Mi W. of LA 87, St. Mary, LA
Built 2022 Load: 38.2 t ADT: 170
Elliot Rd
GoodOver: MAREE MICHAL CANAL
1.4 Mi S of La 14, Vermilion, LA
Built 2013 Load: 38.2 t ADT: 243
Lloyd Rd
GoodOver: Bayou Grand Marais
0.9 Mi N of La 92, Vermilion, LA
Built 2011 Load: 38.2 t ADT: 96
Swan Lake Rd
GoodOver: Willow Chute Bayou
0.50 MI N OF I-220, Bossier, LA
Built 2019 Load: 38.2 t ADT: 5,335
LA0157
GoodOver: DORCHEAT BAYOU
4.48 MILES EAST OF US 371, Webster, LA
Built 2010 Load: 38.2 t ADT: 1,757
LA0505
GoodOver: CREEK
0.9 MI EAST OF WINN PARIS, Jackson, LA
Built 2016 Load: 38.2 t ADT: 873
BUCKLEY HILL RD
GoodOver: PATRICK BAYOU
2.0 MILES EAST OF LA 139, Ouachita, LA
Built 2015 Load: 38.2 t ADT: 97
FERGUSON RD
GoodOver: CREEK
0.6 MI E of LA 609, Richland, LA
Built 2009 Load: 38.2 t ADT: 150
LONGVILLE RD
GoodOver: DRY CREEK
4.8 MI W OF LA 113, Beauregard, LA
Built 2005 Load: 38.2 t ADT: 230
WILLIAMS RD
GoodOver: HAMPTON COULEE
0.01 MI. E OF GUM COVE RD, Calcasieu, LA
Built 2011 Load: 38.2 t ADT: 60
LA1178
GoodOver: STATE CANAL
3.85 MILES SOUTH OF LA 29, Avoyelles, LA
Built 2012 Load: 38.2 t ADT: 175
US0165
GoodOver: INDIAN CREEK RELIEF
5.03 MI. NORTH OF LA 123, Grant, LA
Built 2007 Load: 38.2 t ADT: 7,084
LA0478
GoodOver: BAYOU GRANDE RELIEF
1.99 MILES EAST OF LA 120, Natchitoches, LA
Built 2013 Load: 38.2 t ADT: 172
LA0478
GoodOver: BAYOU GRANDE
1.91 MILES EAST OF LA 120, Natchitoches, LA
Built 2013 Load: 38.2 t ADT: 172
LA0028
GoodOver: HEMPHILL CREEK
4.0 MI. WEST OF LA 121, Rapides, LA
Built 2011 Load: 38.2 t ADT: 8,811
LA0028
GoodOver: CYPRESS BAYOU
4.21 MI. EAST OF LA 465, Rapides, LA
Built 2013 Load: 38.2 t ADT: 8,811
LA0112
GoodOver: SPRING CREEK
5.09 MILES EAST OF JCT LA, Rapides, LA
Built 2007 Load: 38.2 t ADT: 1,268
LA0112
GoodOver: BILL CREEK
5.65 MI EAST OF LA 121, Rapides, LA
Built 2007 Load: 38.2 t ADT: 1,268
LA0112
GoodOver: SQUYRES BRANCH
3.07 MI. EAST OF LA 1199, Rapides, LA
Built 2006 Load: 38.2 t ADT: 1,268
US0171
GoodOver: LEWIS CREEK
1.67 MI. NORTH OF LA 175, Sabine, LA
Built 2006 Load: 38.2 t ADT: 4,790
LA0501
GoodOver: Iron Branch
2.0 Mi N of LA 1232, Winn, LA
Built 2022 Load: 38.2 t ADT: 549
Beluah
GoodOver: DUGDEMONA RIVER RELIEF
BUELAH ROAD, Winn, LA
Built 1992 Load: 38.2 t ADT: 291
US0165
GoodOver: BLACK BAYOU RELIEF
0.3 MI. NORTH OF LA 483, Caldwell, LA
Built 2004 Load: 38.2 t ADT: 13,633
US0165
GoodOver: HURRICANE CREEK
4.4 MI N of LA 506, Caldwell, LA
Built 2004 Load: 38.2 t ADT: 13,633
US0165
GoodOver: HURRICANE CREEK
0.26 M S of LA 844, Caldwell, LA
Built 2004 Load: 38.2 t ADT: 12,669
Temple Rd
GoodOver: Black Bayou
LOG MI 0.211 N of HWY 84, Concordia, LA
Built 2010 Load: 38.2 t ADT: 125
LA0500
GoodOver: JONES CREEK
7.45 MI WEST OF US 84, LaSalle, LA
Built 1989 Load: 38.2 t ADT: 633
Lemannville Cutoff
GoodOver: VERRET BAYOU
1.47 MI SW OF LA 18, Ascension, LA
Built 2017 Load: 38.2 t ADT: 50
Goodwood Blvd
GoodOver: NORTH BRANCH WARD CREEK
2.3 MI E OF LA 73, East Baton Rouge, LA
Built 1967 Load: 38.2 t ADT: 20,794
LA0040
GoodOver: TCHEFUNCTE RIVER
3.9 Mi E of LA 445, St. Tammany, LA
Built 2023 Load: 38.2 t ADT: 2,778
LA1054
GoodOver: TANGIPAHOA RIVER RELIEF
1.23 MILES EAST OF JCT US, Tangipahoa, LA
Built 2008 Load: 38.2 t ADT: 1,235
Showing 9,351-9,400 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.