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
LA0444
GoodOver: DUNNAGE CREEK
4.25 MILES WEST OF LA.22, Livingston, LA
Built 2015 Load: 40.2 t ADT: 3,782
N. Oak St
GoodOver: CREEK
1.7 MI SO LA 1064 ON NOAK, Tangipahoa, LA
Built 1996 Load: 40.2 t ADT: 3,757
RIVER ROAD
GoodOver: BRANCH
1.9 MI S OF LA 438, Washington, LA
Built 2018 Load: 40.2 t ADT: 241
LA0428
GoodOver: ALGIERS CANAL
0.5 MILE SOUTH EAST OF US, Orleans, LA
Built 2012 Load: 40.5 t ADT: 28,244
Spanish Trail
GoodOver: Bayou Bourbeaux
0.1 MI W of I-49 Frontage, St. Landry, LA
Built 2007 Load: 40.5 t ADT: 25
Swan Lake Rd
GoodOver: MACKS BAYOU
1.5 MI NORTH OF US 80, Bossier, LA
Built 1986 Load: 40.5 t ADT: 14,078
LA0507
GoodOver: CREEK
1.7 MI E OF LA 514, Red River, LA
Built 2021 Load: 40.5 t ADT: 582
LA0532
GoodOver: I-20
3.8 MI NE OF LA 531, Webster, LA
Built 2021 Load: 40.5 t ADT: 923
OLD RIVER RD
GoodOver: SHOATS CREEK
0.8 MI N of LLOYD SMITH C, Beauregard, LA
Built 2005 Load: 40.5 t ADT: 10
Hudson Creek Rd
GoodOver: HUDSON CREEK
0.69 M. N. OF JCT US 71, Grant, LA
Built 2005 Load: 40.5 t ADT: 350
PROSPECT RD
GoodOver: BIG SKINNER CREEK
6.28 MI. SOUTH OF LA 474, Sabine, LA
Built 2004 Load: 40.5 t ADT: 85
MESHELL RD
GoodOver: EDMONDSON CREEK
MESHELL ROAD, Sabine, LA
Built 1990 Load: 40.5 t ADT: 120
LA0008
GoodOver: JURDON-CREEK
1.2 MI EAST OF LA 464, Vernon, LA
Built 1977 Load: 40.5 t ADT: 2,687
Flint Rd
GoodOver: TURKEY CREEK
LOGMI 0.40 FR ODE TO 534, Franklin, LA
Built 1993 Load: 40.5 t ADT: 120
I0010
GoodOver: DRAINAGE CANAL
0.3 M SE of I-10&LA 941, Ascension, LA
Built 1979 Load: 40.5 t ADT: 57,444
E Brookstown Dr
GoodOver: HURRICANE CREEK
0.2 MILES NORTH OF WINSBO, East Baton Rouge, LA
Built 2015 Load: 40.5 t ADT: 5,100
LA0038
GoodOver: DRAIN
0.63OF A MILE EAST OF LA, St. Helena, LA
Built 2013 Load: 40.5 t ADT: 1,715
INDEPENDENCE AVE
GoodOver: CANAL
ON INDEPENDENCE AVENUE 0., St. Tammany, LA
Built 2016 Load: 40.5 t ADT: 1,000
Million Dollar Rd
GoodOver: BOGUE FALAYA RIVER REL
0.2 MILES EAST OF LA 25, St. Tammany, LA
Built 1990 Load: 40.5 t ADT: 1,768
Quick Blvd.
GoodOver: CREEK
1.0 MI N/W JCT I55&3234, Tangipahoa, LA
Built 2007 Load: 40.5 t ADT: 174
CECIL CREEK ROAD
GoodOver: CECIL CREEK
SEC 6 T22N R3E, Union, LA
Built 2005 Load: 40.8 t ADT: 3
S. GAS LINE RD.
GoodOver: CUT-OFF CREEK
2 MI S OF MAINT FACILITY, Union, LA
Built 2005 Load: 40.8 t ADT: 3
S. GAS LINE RD.
GoodOver: CECIL CREEK (BIG LAKE)
SEC 31 T22N R3E, Union, LA
Built 2005 Load: 40.8 t ADT: 10
FINA ROAD
GoodOver: CROSS BAYOU
CROSS BAYOU, Tensas, LA
Built 1997 Load: 40.8 t ADT: 20
LA0182
GoodOver: MCMAHON CANAL
.7 MI EAST OF US 90, Lafourche, LA
Built 1981 Load: 40.8 t ADT: 7,322
LA0182
GoodOver: BAYOU FOLSE
.01 MI EAST OF LA 653, Lafourche, LA
Built 1981 Load: 40.8 t ADT: 7,322
US0090
GoodOver: FOLSE BAYOU
2.2 MI EAST OF LA 182, Lafourche, LA
Built 1984 Load: 40.8 t ADT: 189
US0090
GoodOver: ON RAMP FROM LA308
.4 MI EAST OF LA 1, Lafourche, LA
Built 1976 Load: 40.8 t ADT: 26,058
US0090
GoodOver: OFF RAMP TO LA308
.4 MI EAST OF LA 1, Lafourche, LA
Built 1976 Load: 40.8 t ADT: 12,192
US0090-B
GoodOver: GROUND
1.8 MI SOUTH OF I-10, Orleans, LA
Built 1960 Load: 40.8 t ADT: 7,620
LAKESHORE DR
GoodOver: LONDON AVE. CANAL
0.8 MI W OF ELYSIAN F., Orleans, LA
Built 2003 Load: 40.8 t
LA0406
GoodOver: PLANTERS CANAL
1.71 MI NORTH OF LA 23, Plaquemines, LA
Built 1977 Load: 40.8 t ADT: 12,412
LA0306
GoodOver: DRAIN CANAL
2.1 MI NORTH OF LA 632, St. Charles, LA
Built 1984 Load: 40.8 t ADT: 1,596
LA0306
GoodOver: DRAIN CANAL
.6 MI NORTH OF LA 632, St. Charles, LA
Built 1984 Load: 40.8 t ADT: 1,596
LA0306
GoodOver: DRAIN CANAL
1.2 MI SOUTH OF LA 632, St. Charles, LA
Built 1984 Load: 40.8 t ADT: 1,596
LA0020
GoodOver: DRAINAGE CANAL
7.1 MI E OF LA 182, Terrebonne, LA
Built 1984 Load: 40.8 t ADT: 3,696
CHARLIE ARCENEAUX
GoodOver: WIKOFF BAYOU
1.3 Mi. NW of LA 98, Acadia, LA
Built 2016 Load: 40.8 t ADT: 48
US0167
GoodOver: BAYOU JOE MORCEL
0.55 Mi E of La 3097, Evangeline, LA
Built 1994 Load: 40.8 t ADT: 11,126
I0049
GoodOver: DRAINAGE CANAL
3.8 MI SOUTH LA 106, Evangeline, LA
Built 1986 Load: 40.8 t ADT: 9,158
LA1160
GoodOver: DRAINAGE CANAL
.6 M WEST OF LA 13, Evangeline, LA
Built 1993 Load: 40.8 t ADT: 2,000
LA0376
GoodOver: BAYOU NEZPIQUE
6.9 MI WEST OF LA 13, Evangeline, LA
Built 1994 Load: 40.8 t ADT: 104
LA0014
GoodOver: BAYOU PETITE ANSE
5.26 MI EAST OF LA 330, Iberia, LA
Built 1988 Load: 40.8 t ADT: 12,347
LA0014
GoodOver: BAYOU PETITE ANSE
1.5 MI SW of LA 676, Iberia, LA
Built 1988 Load: 40.8 t ADT: 8,404
LA0014
GoodOver: ARMENCO CANAL
0.8 MI WEST OF US 90, Iberia, LA
Built 1981 Load: 40.8 t ADT: 8,404
LA0719
GoodOver: BAYOU QUEUE DE TORTUE
2.1 Mi. N. of LA 720, Lafayette, LA
Built 1983 Load: 40.8 t ADT: 2,382
Fatima Rd
GoodOver: COULEE
0.3 Mi W of Bajat Rd, Lafayette, LA
Built 2006 Load: 40.8 t ADT: 145
US0190
GoodOver: BAYOU DES CANNES
2.12 Mi E of LA 3068, St. Landry, LA
Built 1990 Load: 40.8 t ADT: 3,310
I0049
GoodOver: BAYOU COCODRIE
2.96 Mi S of LA 29, St. Landry, LA
Built 1987 Load: 40.8 t ADT: 13,540
US0090
GoodOver: CHARENTON CANAL
2.05 MI W of LA 3211, St. Mary, LA
Built 1978 Load: 40.8 t ADT: 21,000
US0080
GoodOver: FLAT RIVER
1.8 MI EAST OF LA 782-2, Bossier, LA
Built 2003 Load: 40.8 t ADT: 15,627
Showing 9,851-9,900 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.