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
LA 3277
FairOver: COULEE VALENTINE
0.4 MI South Of LA 374, Evangeline, LA
Built 1959 Load: 23.6 t ADT: 759
LA 3277
FairOver: BAYOU DURALDE
1.2 Miles North of LA 374, Evangeline, LA
Built 1959 Load: 23.6 t ADT: 759
LA1161
FairOver: BAYOU JOE MARCEL
5.56 MI NORTH OF LA 104, Evangeline, LA
Built 1962 Load: 23.6 t ADT: 2,821
LA0086
FairOver: BAYOU TECHE
0.1 MI NE of LA 182, Iberia, LA
Built 1941 Load: 23.6 t ADT: 3,834
LA0675
FairOver: ARMENCO CANAL
0.4 MI EAST OF US 90, Iberia, LA
Built 1960 Load: 23.6 t ADT: 8,715
Le Violon Rd.
FairOver: ILE DES CANNES COULEE
1.5 Mi NW of LA 342, Lafayette, LA
Built 1977 Load: 23.6 t ADT: 2,363
LA0103
FairOver: BAYOU COURTABLEAU
4.37 MI SOUTH OF LA 359, St. Landry, LA
Built 1937 Load: 23.6 t ADT: 2,097
LA0103
FairOver: BAYOU MALLET
1.26 MI NORTH OF LA 104, St. Landry, LA
Built 1960 Load: 23.6 t ADT: 616
LA0353
FairOver: BAYOU VERMILION
1.6 MI SOUTH OF LA 94, St. Martin, LA
Built 1976 Load: 23.6 t ADT: 3,749
Division Rd
FairOver: COULEE
0.4 Mi. SW of LA 345, St. Martin, LA
Built 1970 Load: 23.6 t ADT: 129
Gladu Road
FairOver: Coulee
0.4 Mi. West of 343, Vermilion, LA
Built 2009 Load: 23.6 t ADT: 350
LA0014
FairOver: BAYOU TIGRE
0.2 Mi. West OF LA 331, Vermilion, LA
Built 1957 Load: 23.6 t ADT: 13,088
LA0699
FairOver: BAYOU GRAND MARAIS
1.4 MI S. OF LA 92, Vermilion, LA
Built 1962 Load: 23.6 t ADT: 442
LA0330
FairOver: YOUNGS COULEE
3.75 MI S. OF LA 82, Vermilion, LA
Built 1959 Load: 23.6 t ADT: 1,814
LA0157
FairOver: FLAT BRANCH
2.65 MI NORTH OF LA 160, Bossier, LA
Built 1962 Load: 23.6 t ADT: 176
LA0157
FairOver: CYPRESS BAYOU
2.82 MI NORTH OF LA 160, Bossier, LA
Built 1962 Load: 23.6 t ADT: 176
LA0157
FairOver: CYPRESS BAYOU RLF
3.16 MI NORTH OF LA 160, Bossier, LA
Built 1962 Load: 23.6 t ADT: 176
Sligo Rd
FairOver: Horseshoe Creek
2.5 MILES WEST OF LA 157, Bossier, LA
Built 1986 Load: 23.6 t ADT: 4,000
LA3032
FairOver: RED RIVER FANT/PARKWAY
1.52 MI EAST OF LA1, Caddo, LA
Built 1972 Load: 23.6 t ADT: 26,979
I0020
FairOver: KCS RR
.1 MI EAST OF LA 1, Caddo, LA
Built 1965 Load: 23.6 t ADT: 87,567
LA0534
FairOver: FLAT LICK BAYOU
2.81 MI SOUTH OF LA 2, Claiborne, LA
Built 1962 Load: 23.6 t ADT: 42
LA0172
FairOver: BUSHNECK BAYOU
2.6 MI WEST OF LA 169, De Soto, LA
Built 1958 Load: 23.6 t ADT: 1,316
LA0005
FairOver: RAMBIN BAYOU
2.08 MI EAST OF LA 171, De Soto, LA
Built 1962 Load: 23.6 t ADT: 2,226
LA0191
FairOver: B GRAND CANE RELIEF
4.74 MI NORTH OF LA 763, De Soto, LA
Built 1958 Load: 23.6 t ADT: 1,093
LA0191
FairOver: BAYOU GRAND CANE
4.82 MI NORTH OF LA 763, De Soto, LA
Built 1958 Load: 23.6 t ADT: 1,093
LA0481
FairOver: CLEMENT CREEK
9.91 MI NORTH OF LA 191, De Soto, LA
Built 1962 Load: 23.6 t ADT: 469
LA0512
FairOver: SAN PATRICIO BAYOU
2.21 MI EAST OF LA 171, De Soto, LA
Built 1957 Load: 23.6 t ADT: 215
LA0346
FairOver: RAMBIN BAYOU
6.05 MI EAST OF LA 175, De Soto, LA
Built 1962 Load: 23.6 t ADT: 275
LA0191
FairOver: COW BAYOU RELIEF
1.92 MI NORTH OF LA 481, De Soto, LA
Built 1960 Load: 23.6 t ADT: 769
LA0191
FairOver: CLEMENT CREEK
7.56 MI NORTH OF LA 481, De Soto, LA
Built 1958 Load: 23.6 t ADT: 769
LA3061
FairOver: SHEPHERD CREEK
1.46 MI EAST OF LA 818, Lincoln, LA
Built 1968 Load: 23.6 t ADT: 3,433
LA0603
FairOver: HARPER BAYOU
8.90 MI EAST OF SOUTH INT, Madison, LA
Built 1958 Load: 23.6 t ADT: 100
LA3048
FairOver: DRAIN
1.6 MI NORTH OF LA 584, Richland, LA
Built 1960 Load: 23.6 t ADT: 1,594
LA3048
FairOver: LA 3048 OVER I-20
LA 3048 OVER I-20, Richland, LA
Built 1969 Load: 23.6 t ADT: 1,594
LA0550
FairOver: CREEK
3.8 MI NORTH OF LA 2, Union, LA
Built 1971 Load: 23.6 t ADT: 464
LA0588
FairOver: ALLIGATOR BAYOU
2.85 MI E of LA 17, West Carroll, LA
Built 1963 Load: 23.6 t ADT: 171
LA0113
FairOver: MUD CREEK
0.5 MI. N. OF US 190, Allen, LA
Built 1959 Load: 23.6 t ADT: 1,312
LA0113
FairOver: MUD CREEK
4.1 MI. N. OF US 190, Allen, LA
Built 1959 Load: 23.6 t ADT: 1,312
LA0112
FairOver: SIX MI CR RELIEF
0.2 MI. E. Of LA 377, Allen, LA
Built 1962 Load: 23.6 t ADT: 1,138
LA0112
FairOver: SIX MILE CREEK
0.3 MI E OF LA 377, Allen, LA
Built 1962 Load: 23.6 t ADT: 1,138
LA0112
FairOver: TEN MILE CREEK
1.1 MI. E OF LA377, Allen, LA
Built 1960 Load: 23.6 t ADT: 1,138
LA0112
FairOver: SUGAR CREEK
1.2 MI E of LA 113, Beauregard, LA
Built 1962 Load: 23.6 t ADT: 718
LA0389
FairOver: CREEK
3.25 MI. E OF INT LA109, Beauregard, LA
Built 1959 Load: 23.6 t ADT: 1,794
LA0389
FairOver: BEAR HEAD CREEK
3.0 MI. E. OF LA 109, Beauregard, LA
Built 1959 Load: 23.6 t ADT: 439
LA0389
FairOver: LITTLE CREEK
4.6 MI. E. OF LA 109, Beauregard, LA
Built 1959 Load: 23.6 t ADT: 439
LA0109
FairOver: WINDMAM CREEK
.9 MI. S OF INT LA389, Beauregard, LA
Built 1962 Load: 23.6 t ADT: 1,749
LA0109
FairOver: BUXTON MARSH
6.3 MI. N. OF LA 389, Beauregard, LA
Built 1963 Load: 23.6 t ADT: 303
LA0109
FairOver: MARSH
7.2 MI. N. OF LA 389, Beauregard, LA
Built 1963 Load: 23.6 t ADT: 303
LA0109
FairOver: MARSH
7.5 MI. N. OF LA 389, Beauregard, LA
Built 1963 Load: 23.6 t ADT: 303
LA0109
FairOver: BEARHEAD CREEK
7.6 MI. N. Of LA 389, Beauregard, LA
Built 1963 Load: 23.6 t ADT: 303
Showing 1,651-1,700 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.