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
LA0039
GoodOver: CHALMETTE VISTA
1.9 MI NORTH OF LA 36, St. Bernard, LA
Built 2001 Load: 29.5 t ADT: 31,327
W. Pont Des Mouton
GoodOver: Gaston Coulee
0.1 Mi. W. of La 182, Lafayette, LA
Built 2006 Load: 29.5 t ADT: 11,091
SHIRLEY FRANCIS RD
GoodOver: TRIB. TO BOGGY BAYOU
3.1 MILES EAST OF LA 169, Caddo, LA
Built 2007 Load: 29.5 t ADT: 4,015
CAPLES RD
GoodOver: CLARK CREEK
2.33 MILES EAST OF LA 546, Ouachita, LA
Built 2015 Load: 29.5 t ADT: 573
Osa Avant Rd
GoodOver: Eureka Creek
0.2 Mi N. of La 837, Ouachita, LA
Built 2020 Load: 29.5 t ADT: 297
IKE KELLY RD
GoodOver: LAPINE BAYOU
1.75 MI. EAST OF LA 557, Ouachita, LA
Built 2013 Load: 29.5 t ADT: 99
LA0112
GoodOver: DRAIN
3.0 MI E of LA 113, Allen, LA
Built 2011 Load: 29.5 t ADT: 718
LA0158
GoodOver: GRAPPE BAYOU
0.14 MILE SOUTH JCT US 71, Grant, LA
Built 2009 Load: 29.5 t ADT: 1,561
Newton Rd
GoodOver: BEAVER CREEK
0.3 M. S. OF JCT. LA 122, Grant, LA
Built 1998 Load: 29.5 t ADT: 49
Bayou Derbonne Rd
GoodOver: BAYOU DERBONNE TRIBUTARY
1.6 MILES NW OF LA 119, Natchitoches, LA
Built 2012 Load: 29.5 t ADT: 104
PRICE RD
GoodOver: CALCASIEU RIVER
3.5 MI S OF LA 465, Rapides, LA
Built 2018 Load: 29.5 t ADT: 142
PLAINVIEW RD
GoodOver: MILL CREEK
4.76 MI. EAST OF US 171, Sabine, LA
Built 1990 Load: 29.5 t ADT: 290
BOONE ST
GoodOver: CREEK
0.46 MI N.W. JCT. US 171, Vernon, LA
Built 1995 Load: 29.5 t ADT: 2,800
US0084
GoodOver: CREEK
.9 MI WEST OF LA 127, LaSalle, LA
Built 1959 Load: 29.5 t ADT: 6,905
Bayou Paul Ln
GoodOver: BAYOU PAUL
.3 MI. NW OF ST. GABRIEL, Iberville, LA
Built 1994 Load: 29.5 t ADT: 985
LA0966
GoodOver: THOMPSON CREEK TRIBUTARY
LA 966 1.97 MILES EAST OF, West Feliciana, LA
Built 2010 Load: 29.5 t ADT: 857
LA1026
GoodOver: LA 1026 OVER INTERSTATE1
1.8 M E OF LA 16, Livingston, LA
Built 2006 Load: 29.5 t ADT: 9,389
N. Doyle Rd
GoodOver: BIG BRANCH
3.0 MI N/E OF LA 63 EXIT, Livingston, LA
Built 1998 Load: 29.5 t ADT: 850
Guste Island Rd
GoodOver: Black Bayou
2.36 Mi. S. of LA 22, St. Tammany, LA
Built 1984 Load: 29.5 t ADT: 200
I0012
GoodOver: TCHEFUNCTE RIVER
1.6 miles west of US 190, St. Tammany, LA
Built 1975 Load: 29.5 t ADT: 29,236
N. CSWY BLVD N.B.
GoodOver: MONROE STREET OPASS
0.30 MI N OF CAUSEWAY BR., St. Tammany, LA
Built 1993 Load: 29.5 t ADT: 1,600
N. CSWY APPR S.B.
GoodOver: MONROE St
1.4 Mi S of US 190, St. Tammany, LA
Built 1993 Load: 29.5 t ADT: 1,600
LA0016
GoodOver: CREEK
0.5 MI NORTH OF LA 25, Washington, LA
Built 2003 Load: 29.5 t ADT: 8,684
CANAL RD
GoodOver: DRAINAGE CANAL
0.5 MI W OF LA 45, Jefferson, LA
Built 2014 Load: 29.8 t ADT: 431
RANDOLPH ST
GoodOver: DRAINAGE CANAL
0.5 MI W OF LA 45, Jefferson, LA
Built 2013 Load: 29.8 t ADT: 431
W Napolean
GoodOver: Suburban Canal
.3 miles east of Clearvie, Jefferson, LA
Built 2003 Load: 29.8 t ADT: 21,460
LA0039
GoodOver: GUERENGER CANAL
.9 MI NORTH OF LA 36, St. Bernard, LA
Built 2001 Load: 29.8 t ADT: 47,739
Fabacher Rd.
GoodOver: Bayou Pointe Aux Loups
0.3 MI W of LA 91, Acadia, LA
Built 2014 Load: 29.8 t ADT: 480
W. Pont Des Mouton
GoodOver: CANAL
1.07 Mi W of I-49, Lafayette, LA
Built 2007 Load: 29.8 t ADT: 5,584
INNOVATION DRIVE
GoodOver: BENOIT BAYOU
1.0 MI W OF LA 3105, Bossier, LA
Built 2020 Load: 29.8 t ADT: 50
LA0002
GoodOver: KELLY BAYOU
0.47 MI EAST OF US 71, Caddo, LA
Built 2006 Load: 29.8 t ADT: 776
SOUTH LAKESHORE DR
GoodOver: TRIB. TO CROSS LAKE
7.4 MI EAST OF LA 169, Caddo, LA
Built 1994 Load: 29.8 t ADT: 1,100
LA0146
GoodOver: DRAIN
1.49 MI. SOUTH OF US 79, Claiborne, LA
Built 2014 Load: 29.8 t ADT: 1,360
LA0157
GoodOver: DORCHEAT B. RELIEF
4.1 MILES EAST OF US 371, Webster, LA
Built 2010 Load: 29.8 t ADT: 1,757
LA0157
GoodOver: CYPRESS CREEK
6.90 MILES EAST OF US 371, Webster, LA
Built 2010 Load: 29.8 t ADT: 1,757
LA0157
GoodOver: DORCHEAT B. RELIEF
4.35 MILES EAST OF US 371, Webster, LA
Built 2010 Load: 29.8 t ADT: 1,757
CHEM CUTOFF RD
GoodOver: CHEMIN A HAUT BAYOU
0.6 M EAST OF INT 267, Morehouse, LA
Built 1990 Load: 29.8 t ADT: 110
PHILLIPS ST
GoodOver: CANAL
0.2 MI. S. OF US 90, Calcasieu, LA
Built 2009 Load: 29.8 t ADT: 250
FH 59
GoodOver: KISATCHIE BAYOU
NO DATA ENTERED, Natchitoches, LA
Built 1967 Load: 29.8 t ADT: 80
GANDY RD
GoodOver: MIDKIFF CREEK
APP. 0.75 M. W. OF US 171, Sabine, LA
Built 1984 Load: 29.8 t ADT: 250
LA0849
GoodOver: CREEK
1.95 MI E OF LA 850, Caldwell, LA
Built 1979 Load: 29.8 t ADT: 71
US0090
GoodOver: OFFGOING RAMP A.E.
2.56 Mi W of La 662 Exit, Assumption, LA
Built 1999 Load: 29.8 t ADT: 12,192
LA0037
GoodOver: BEAVER CREEK
LA 37 0.1 MILES EAST OF C, East Baton Rouge, LA
Built 2014 Load: 29.8 t ADT: 20,690
Balis Dr
GoodOver: DAWSON CREEK
0.2 M N OF LA 427, East Baton Rouge, LA
Built 2003 Load: 29.8 t ADT: 9,706
LA0010
GoodOver: GRANTS BAYOU EAST FORK
0.707 MILES WEST OF US 61, West Feliciana, LA
Built 2010 Load: 29.8 t ADT: 5,763
Booker Rd
GoodOver: SELSERS CREEK
2.0 MILES NORTHEAST OF LA, Tangipahoa, LA
Built 2011 Load: 29.8 t ADT: 915
Peterson Rd
GoodOver: CREEK
0.2 MILES NORTH OF LA 440, Washington, LA
Built 2014 Load: 29.8 t ADT: 325
US0090
GoodOver: LA 182 / Drainage Canal
US 90 EB OVER LA 182, Lafourche, LA
Built 1980 Load: 29.9 t ADT: 14,769
US0090
GoodOver: LA 182 / Drainage Canal
US 90 WB OVER LA 182, Lafourche, LA
Built 1980 Load: 29.9 t ADT: 13,535
I0310
GoodOver: SWAMP
0.1 M NORTH OF US 61, St. Charles, LA
Built 1992 Load: 29.9 t ADT: 15,642
Showing 7,251-7,300 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.