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
LA0070
GoodOver: BELLE RIVER
0.01 Mi. S. of LA 1016-2, Assumption, LA
Built 2009 Load: 14.6 t ADT: 8,005
SMITH CUT OFF RD
GoodOver: BESS BRANCH
0.4 MI. W. OF LA 109, Calcasieu, LA
Built 1994 Load: 14.7 t ADT: 290
Ellis Rd.
GoodOver: Long Point Gully
0.4 Mi. E. of La 13, Acadia, LA
Built 2011 Load: 14.8 t ADT: 288
Muskrat Rd.
GoodOver: Prime Gully
1.8 Mi. S. of La 1115, Acadia, LA
Built 2011 Load: 14.8 t ADT: 10
LA0003
GoodOver: KCS RR XING
.38 MILES NORTH OF I-20, Bossier, LA
Built 2008 Load: 14.9 t ADT: 21,505
LA0083
GoodOver: PATOUT BAYOU
4.2 Mi N. of LA 319, Iberia, LA
Built 2012 Load: 15.2 t ADT: 5,447
Monticello Ave
GoodOver: PALMETTO CANAL
O.0MI.N.OF NORTHLINE, Orleans, LA
Built 1960 Load: 15.4 t
Riverside Rd
GoodOver: Coulee
0.87 MI. S of JCT LA 1123, Acadia, LA
Built 2018 Load: 15.4 t ADT: 192
Provost Rd
GoodOver: COULEE
0.40 Mi S of Caroline St, Lafayette, LA
Built 2012 Load: 15.4 t ADT: 1,200
Antrim Rd
GoodOver: Lil Cypress Creek
1.0 MI E OF HWY 3, Bossier, LA
Built 1987 Load: 15.4 t ADT: 100
W. Beech Rd
GoodOver: Coulee
1.5 Mi E of Farmers Rd, Vermilion, LA
Built 2023 Load: 15.9 t ADT: 50
US0171
GoodOver: CREEK
8.5 MI NORTH OF LA 110, Beauregard, LA
Built 1931 Load: 15.9 t ADT: 8,463
US0190
GoodOver: DRAIN
0.5 M W OF LA 43, Livingston, LA
Built 1932 Load: 15.9 t ADT: 4,992
LA0142
GoodOver: CREEK
1.6 MI NORTH OF US 425, Morehouse, LA
Built 1950 Load: 16.2 t ADT: 4,706
US0171
GoodOver: INDIAN BAYOU
10.6 MI NORTH OF LA 378, Beauregard, LA
Built 1932 Load: 16.2 t ADT: 12,466
Shannon Dr
GoodOver: LITTLE BAYOU PIPE
US190 3.2 MI E LA 434, St. Tammany, LA
Built 1995 Load: 16.2 t ADT: 100
LA0008
GoodOver: BRUSHLEY BAYOU
0.59 M E of LA 772, Catahoula, LA
Built 1994 Load: 16.3 t ADT: 1,527
Floodgate Crossing
GoodOver: BAYOU DES GLAISES
APP. 0.10 M. E. OF LA 451, Avoyelles, LA
Built 1960 Load: 16.5 t ADT: 260
DUPLANTIS BRIDGE
GoodOver: PETIT CAILLOU BAYOU
0144 LOG MI FROM IN, Terrebonne, LA
Built 1973 Load: 16.8 t ADT: 5,180
Firetower Rd
GoodOver: Ford Creek
0.2M E of Springridge Rd, Catahoula, LA
Built 1972 Load: 16.8 t ADT: 90
LA0083
GoodOver: STUMPY BAYOU
5.5 MI N OF LA 319, Iberia, LA
Built 2011 Load: 17.2 t ADT: 3,078
E. Refinery Rd.
GoodOver: TECHE BAYOU
0.12 MI. EAST OF LA 31, St. Martin, LA
Built 2010 Load: 17.2 t ADT: 2,508
Willow St.
GoodOver: COULEE
1.2 Mi. W of LA 182, St. Mary, LA
Built 1957 Load: 17.2 t ADT: 1,350
US0090
GoodOver: FRANCE RD/N.O. BELT R/R
0.50 M NORTH OF I-10, Orleans, LA
Built 1989 Load: 17.5 t ADT: 47,738
PINE HILL ROAD
GoodOver: McCAIN CREEK
1.6 MI W OF LA 1, Caddo, LA
Built 2020 Load: 17.5 t ADT: 1,172
LA0986
GoodOver: DRAINAGE CANAL
0.6 M E of LA 415@LA 986, West Baton Rouge, LA
Built 1923 Load: 17.5 t ADT: 1,204
I0010
GoodOver: I-10 EAST AND WEST BOUND
0.5 MI EAST OF CLEARVIEW, Jefferson, LA
Built 2009 Load: 17.8 t ADT: 15,955
METZGER RD
GoodOver: GOVERNMENT DITCH
1.1 MI E of ARDOIN RD, Calcasieu, LA
Built 2017 Load: 17.8 t ADT: 46
FDR 814
GoodOver: COW BRANCH
2.0 MI. E. OF LA. 159, Webster, LA
Built 1979 Load: 17.8 t ADT: 30
PINE ST
GoodOver: WASHINGTON AVE. CANAL
0.04 MI NE OF STROELITZ S, Orleans, LA
Built 1991 Load: 18.1 t ADT: 1,000
LA0097
GoodOver: CREEK
0.1 MI SOUTH OF US 190, Acadia, LA
Built 1956 Load: 18.1 t ADT: 1,175
Green Valley Rd
GoodOver: COULEE
0.40 Mi NW of La 748, Evangeline, LA
Built 1993 Load: 18.1 t ADT: 41
Austria Rd.
GoodOver: BAYOU QUEUE DE TORTUE
0.30 MI SOUTH US 90, Lafayette, LA
Built 1997 Load: 18.1 t ADT: 40
Falcon Rd
GoodOver: Bayou Mallet
1.09 MI SW of LA 104, St. Landry, LA
Built 2000 Load: 18.1 t ADT: 35
MARVIN HEAD RD
GoodOver: PRAIRION BAYOU
0.17 MI SE of LA 557, Ouachita, LA
Built 1996 Load: 18.1 t ADT: 463
RED CUT RD
GoodOver: PRARION BAYOU
2.76 MI. NE HWY. 557, Ouachita, LA
Built 1978 Load: 18.1 t ADT: 135
CADEVILLE CUTOFF
GoodOver: GUYTON CREEK
0.40 MI NW of LA 34, Ouachita, LA
Built 1997 Load: 18.1 t ADT: 307
NFSR 513
GoodOver: SALINE BAYOU
NATIONAL FOREST ROAD, Natchitoches, LA
Built 2003 Load: 18.1 t ADT: 30
Pine Prairie Loop
GoodOver: PINE CREEK
LOG MI 5.6 FR 186 TO 123, Franklin, LA
Built 1998 Load: 18.1 t ADT: 180
Brownell Rd
GoodOver: WEST TURKEY CREEK
0.02 MI W OF LA 4, Franklin, LA
Built 1996 Load: 18.1 t ADT: 143
SUWANEE ST
GoodOver: ICE WATER BRANCH
0.25 MI. SOUTH OF HWY 10, Washington, LA
Built 1995 Load: 18.1 t ADT: 321
Lee Rd
GoodOver: BETTS CREEK
1.0M NORTH OF LA 1072, Washington, LA
Built 1993 Load: 18.1 t ADT: 265
COUNTRY DR
GoodOver: BAYOU TERREBONNE
0.02 MI S. OF LA 24, Terrebonne, LA
Built 2013 Load: 18.5 t ADT: 2,390
Kerrel Vidrine Rd.
GoodOver: DE MANUEL COULEE
0.50 Mi N of La 104, Evangeline, LA
Built 1987 Load: 18.5 t ADT: 37
Mike Ln.
GoodOver: GRAND LOUIS BAYOU
0.17 Mi S of La 1160, Evangeline, LA
Built 1993 Load: 18.5 t ADT: 36
Whispering Pine Rd
GoodOver: DE MANUEL COULEE
2.0M EAST OF LA 29, Evangeline, LA
Built 1992 Load: 18.5 t ADT: 113
Bayou Toureau Rd.
GoodOver: TAUREAU BAYOU
0.73 Mi NW of La 115, Evangeline, LA
Built 1993 Load: 18.5 t ADT: 15
Odon Meche Rd.
GoodOver: DRAINAGE BAYOU
0.6 Mi W of Meche Rd, St. Landry, LA
Built 1987 Load: 18.5 t ADT: 150
Curleys Rd.
GoodOver: BAYOU BOURBEAUX
1.93 Mi SE of LA 754, St. Landry, LA
Built 1992 Load: 18.5 t ADT: 175
Robert Dailey Rd
GoodOver: Bayou Bourbeaux
0.3 Mi. SE Of La 754, St. Landry, LA
Built 1994 Load: 18.5 t ADT: 470
Showing 6,351-6,400 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.