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
FANNIN RD
GoodOver: LAPINE BAYOU
1.7 MILE EAST HWY 557, Ouachita, LA
Built 1985 Load: 36.6 t ADT: 83
MCCORMICK RD
GoodOver: DRAIN INTO CHENIERE CREE
1 MI S HWY 80, Ouachita, LA
Built 1984 Load: 36.6 t ADT: 275
ARKADELPHIA RD
GoodOver: GASKINS BRANCH
4.1 MILES NORTH OF LA 112, Allen, LA
Built 2011 Load: 36.6 t ADT: 260
US0165
GoodOver: BAYOU ARCENEAUX
2.5 MI N of LA 101, Jefferson Davis, LA
Built 2008 Load: 36.6 t ADT: 8,453
Willett Loop Rd
GoodOver: Bear Branch
1.5 Ml SE of La 123, Grant, LA
Built 2017 Load: 36.6 t ADT: 44
LA0120
GoodOver: DUPONT BAYOU
5.5 MILES EAST OF LA 487, Natchitoches, LA
Built 2009 Load: 36.6 t ADT: 1,946
SUSEK DR
GoodOver: MARIA BAYOU TRIB. #3
1.0 MI. EAST OF LA 3144, Rapides, LA
Built 2011 Load: 36.6 t ADT: 4,200
LA0028
GoodOver: WEST FORK CREEK
3 MI WEST OF JCT LA 121, Vernon, LA
Built 2003 Load: 36.6 t ADT: 6,952
US0084
GoodOver: LAS RR
3.8 MI EAST OF LA 1228, Winn, LA
Built 1959 Load: 36.6 t ADT: 5,495
LA0506
GoodOver: LITTLE BLACK BAYOU
0.03 M E of US 165, Caldwell, LA
Built 2004 Load: 36.6 t ADT: 411
LA0555
GoodOver: BAYOU MACON
0.05 M N of LA 610, Franklin, LA
Built 2003 Load: 36.6 t ADT: 562
Green Light Rd.
GoodOver: TURKEY CREEK
1.6 M. E OF DUMMY LINE RD, Franklin, LA
Built 1995 Load: 36.6 t ADT: 60
Camp Dr
GoodOver: CAMP ROAD
2.8 MI ENE-LA427 US61 JCT, Ascension, LA
Built 2000 Load: 36.6 t ADT: 50
Harriet Quimby Ave
GoodOver: MONTE SANO BAYOU
1.1 M N OF LA 408, East Baton Rouge, LA
Built 1984 Load: 36.6 t ADT: 100
George White Rd
GoodOver: BLOOD RIVER
3.0 MI SOUTHEAST 441 EXIT, Livingston, LA
Built 1989 Load: 36.6 t ADT: 650
Bethel Rd
GoodOver: BRIDGE OVER BEAVER CREEK
0.6 MI. S. OF LA 38, St. Helena, LA
Built 1985 Load: 36.6 t ADT: 200
Pipkin Rd
GoodOver: DARLING CREEK
3.9 MI W JCT LA 43 & LA38, St. Helena, LA
Built 1985 Load: 36.6 t ADT: 130
Lookout Rd
GoodOver: DARLING CREEK
.62 MI W. OF LA 43, St. Helena, LA
Built 1986 Load: 36.6 t ADT: 120
Bob Levy Rd
GoodOver: TALISHEEK CREEK BRIDGE
LA 435-N ON BOB LEAVY RD, St. Tammany, LA
Built 1985 Load: 36.6 t ADT: 60
Daniels Rd
GoodOver: DANIEL BRANCH
0.60 M W of LA 25, Washington, LA
Built 1984 Load: 36.6 t ADT: 312
Old Columbia Rd
GoodOver: PUSHEPATAPA CREEK
3.2 MI. EAST OF HWY 436, Washington, LA
Built 1984 Load: 36.6 t ADT: 511
T. C. Brumfield Rd
GoodOver: LAWRENCE CREEK
2.0 MILES N. OF HWY 436, Washington, LA
Built 1995 Load: 36.6 t ADT: 328
Monroe Cr. Rd
GoodOver: BRIDGE OVER CREEK
06.48 MI WEST OF HWY 21, Washington, LA
Built 1984 Load: 36.6 t ADT: 322
CAMPAGNA DR
GoodOver: 20 ARPENT CANAL
0.5 MI N OF LA 39, St. Bernard, LA
Built 2015 Load: 36.9 t ADT: 610
Cherokee Rd.
GoodOver: Coulee
0.2 Mi N. of La 1111, Acadia, LA
Built 1997 Load: 36.9 t ADT: 64
France Rd.
GoodOver: DURALDE BAYOU
0.65 Mi N of LA 374, Evangeline, LA
Built 1992 Load: 36.9 t ADT: 105
Spillway Rd.
GoodOver: SLOUGH
0.11 Mi S of La 106, Evangeline, LA
Built 1995 Load: 36.9 t ADT: 93
Grand Prairie Rd
GoodOver: Armenco Branch Canal
0.6 MI N. of La 675, Iberia, LA
Built 1991 Load: 36.9 t ADT: 229
Bayou Tortue Rd.
GoodOver: COULEE FORTUNE
5.0 MI. WEST OF LA 96, Lafayette, LA
Built 2013 Load: 36.9 t ADT: 1,310
Marteau Rd.
GoodOver: LA SALLE COULEE
1.0 M SW of LA 92, Lafayette, LA
Built 1991 Load: 36.9 t ADT: 320
Rayne Rd
GoodOver: BRANCH OF B. COURTABLEAU
1.67 Mi SE of LA 103, St. Landry, LA
Built 1995 Load: 36.9 t ADT: 225
Carson Rd
GoodOver: DRAINAGE BAYOU
0.74 Mi W of LA 361, St. Landry, LA
Built 2000 Load: 36.9 t ADT: 120
Demosthene Rd
GoodOver: COULEE
1 Mi E of Olias Rd, Vermilion, LA
Built 1986 Load: 36.9 t ADT: 135
Roland Farm Rd
GoodOver: YOUNGS CANAL
1.0 MI W of LA 331, Vermilion, LA
Built 1986 Load: 36.9 t ADT: 250
Pickett Rd
GoodOver: COULEE
0.6 Mi W of La 339, Vermilion, LA
Built 1997 Load: 36.9 t ADT: 500
Sidney Gautreaux
GoodOver: COULEE
1.28 MI N. of La 14, Vermilion, LA
Built 1996 Load: 36.9 t ADT: 400
Rosewood Rd
GoodOver: DES ILES COULEE
2.5 Mi N of La 14, Vermilion, LA
Built 1999 Load: 36.9 t ADT: 250
LA0521
GoodOver: SAND CREEK
1.42 MI. NORTH OF LA 2, Claiborne, LA
Built 2012 Load: 36.9 t ADT: 409
LA0534
GoodOver: Buck Cr
1.75 Mi. N. of LA 2, Claiborne, LA
Built 2020 Load: 36.9 t ADT: 135
Reddix Rd
GoodOver: LITTLE WALLACE BAYOU
1.44 MI. SOUTH OF NORTH J, De Soto, LA
Built 2011 Load: 36.9 t ADT: 170
Parish Rd 410
GoodOver: MILL CREEK
3 MI N OF LA 507, Red River, LA
Built 1997 Load: 36.9 t ADT: 235
WEST KENTUCKY AVE
GoodOver: CR
0.6 MI W of US 167, Lincoln, LA
Built 2008 Load: 36.9 t ADT: 500
STOCKLAND RD
GoodOver: WALNUT BAYOU
0.08 MI S of US 80, Madison, LA
Built 2006 Load: 36.9 t ADT: 50
US0080
GoodOver: STEEP BAYOU
2.4 MI E OF LA 15, Ouachita, LA
Built 2017 Load: 36.9 t ADT: 13,971
LEE ANDING RD
GoodOver: CUT OFF BAYOU
5.81 MI E of LA 577, Ouachita, LA
Built 1993 Load: 36.9 t ADT: 169
US0167
GoodOver: CREEK
1.0 MI. S OF LA 9, Union, LA
Built 2012 Load: 36.9 t ADT: 422
DEAN DRIVE
GoodOver: CHOUPIQUE BAYOU TRIB.
2.77 MI W OF LA 27, Calcasieu, LA
Built 2021 Load: 36.9 t ADT: 100
CORMIER VILLAGE RD
GoodOver: GULLY
1.4 M W of LA 99, Jefferson Davis, LA
Built 1999 Load: 36.9 t ADT: 250
LA0491
GoodOver: BAYOU NID AIGLE
5.3 MI. NORTH OF LA 495, Natchitoches, LA
Built 2010 Load: 36.9 t ADT: 237
Cox Lane
GoodOver: BAYOU SANTABARB
0.43 MILE SOUTH OF LA 478, Natchitoches, LA
Built 2001 Load: 36.9 t ADT: 52
Showing 9,101-9,150 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.