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
I0010
FairOver: DRAIN
1.7 MI EAST OF LA 3256, Calcasieu, LA
Built 1964 Load: 23.6 t ADT: 2,284
LA3020
FairOver: ANTOINE GULLY
0.5 MI. W OF LA 397, Calcasieu, LA
Built 1959 Load: 23.6 t ADT: 3,532
LA3020
FairOver: KAYOUCHE COULEE
2.7 MI. W. OF LA 397, Calcasieu, LA
Built 1959 Load: 23.6 t ADT: 3,532
LA0382
FairOver: CHENE BAYOU
3.5 MI N OF LA 380, Jefferson Davis, LA
Built 1968 Load: 23.6 t ADT: 527
LA0099
FairOver: BAYOU
3.2 MI N LA 102, Jefferson Davis, LA
Built 1962 Load: 23.6 t ADT: 1,405
LA0099
FairOver: BAYOU ALLIGATOR
2.9 MI S of US 190, Jefferson Davis, LA
Built 1962 Load: 23.6 t ADT: 1,405
LA0472
FairOver: BIG BEAR CREEK RELIEF
7.97 MI EAST OF US 167, Grant, LA
Built 1960 Load: 23.6 t ADT: 88
LA1241
FairOver: HUDSON CREEK
3.0 MI EAST OF US 71, Grant, LA
Built 1958 Load: 23.6 t ADT: 2,048
LA1241
FairOver: FRAZIER CREEK
3.14 MI EAST OF US 71, Grant, LA
Built 1958 Load: 23.6 t ADT: 2,048
LA0117
FairOver: SHEARD BRANCH
3.98 MI N OF JCT LA 118, Natchitoches, LA
Built 1955 Load: 23.6 t ADT: 1,513
LA0174
FairOver: ESTES CREEK
4.16 MI. EAST OF LA 191, Sabine, LA
Built 1957 Load: 23.6 t ADT: 1,064
LA0118
FairOver: GOODSON CREEK
6.52 MI EAST OF US 171, Sabine, LA
Built 1961 Load: 23.6 t ADT: 1,471
LA0191
FairOver: BOSSIER BAYOU
3.2 MI NORTH OF LA 174, Sabine, LA
Built 1960 Load: 23.6 t ADT: 610
LA1211
FairOver: MILL CREEK
4.31 MILES WEST OF US 171, Vernon, LA
Built 1958 Load: 23.6 t ADT: 2,663
LA0876
FairOver: BRUSHY BAYOU
2.0 MI SOUTH OF LA 128, Franklin, LA
Built 1962 Load: 23.6 t ADT: 41
LA0124
FairOver: CASTOR CREEK
1.7 MI NORTH OF LA 125, LaSalle, LA
Built 1964 Load: 23.6 t ADT: 1,348
LA0124
FairOver: CHICKASAW CREEK
.5 MI EAST OF LA 506, LaSalle, LA
Built 1959 Load: 23.6 t ADT: 1,838
LA0126
FairOver: BUSHLEY CREEK
1.6 MI EAST OF LA 503, LaSalle, LA
Built 1963 Load: 23.6 t ADT: 183
LA0126
FairOver: LITTLE CREEK
2.8 MI EAST OF LA 503, LaSalle, LA
Built 1963 Load: 23.6 t ADT: 183
LA0575
FairOver: CYPRESS BAYOU
.1 MI EAST OF LA 888, Tensas, LA
Built 1962 Load: 23.6 t ADT: 26
LA0935
FairOver: NEW RIVER CANAL
LA0935, Ascension, LA
Built 1960 Load: 23.6 t ADT: 1,790
LA0936
FairOver: NEELEY CANAL
1.5 M E of LA 936&LA 22, Ascension, LA
Built 1962 Load: 23.6 t ADT: 997
US0190
FairOver: LIVELY BAYOU
US0190, East Baton Rouge, LA
Built 1961 Load: 23.6 t ADT: 17,263
LA0010
FairOver: LITTLE RIVER
LA0010, East Feliciana, LA
Built 1963 Load: 23.6 t ADT: 2,534
LA0412
FairOver: DOYLE BAYOU
LA0412, East Feliciana, LA
Built 1958 Load: 23.6 t ADT: 1,710
LA0412
FairOver: REDWOOD CREEK
LA0412, East Feliciana, LA
Built 1958 Load: 23.6 t ADT: 1,710
LA0620
FairOver: BAYOU CLAUSA
LA0620, West Baton Rouge, LA
Built 1958 Load: 23.6 t ADT: 2,107
LA0965
FairOver: GRANTS BAYOU
1.3 M E of US 61&LA 965, West Feliciana, LA
Built 1959 Load: 23.6 t ADT: 2,133
LA0016
FairOver: AMITE RIVER REL
1.5 M S OF LA 444, Livingston, LA
Built 1960 Load: 23.6 t ADT: 4,313
LA0016
FairOver: AMITE RIVER RELIEF
2.3 M S OF LA 444, Livingston, LA
Built 1960 Load: 23.6 t ADT: 4,313
LA0022
FairOver: ARTHUR SLOUGH
LA0022, Livingston, LA
Built 1959 Load: 23.6 t ADT: 2,745
LA0022
FairOver: PETITE AMITE
LA0022, Livingston, LA
Built 1959 Load: 23.6 t ADT: 2,745
LA0042
FairOver: CAMP CREEK
LA0042, Livingston, LA
Built 1960 Load: 23.6 t ADT: 4,071
LA0042
FairOver: CANEY BRANCH
LA0042, Livingston, LA
Built 1962 Load: 23.6 t ADT: 4,071
LA0042
FairOver: TICKFAW RIVER R.
LA0042, Livingston, LA
Built 1962 Load: 23.6 t ADT: 4,071
LA0042
FairOver: LIZARD CREEK
LA0042, Livingston, LA
Built 1961 Load: 23.6 t ADT: 2,466
LA1026
FairOver: CANAL
1.0 M SW OF LA 16, Livingston, LA
Built 1973 Load: 23.6 t ADT: 4,534
LA0040
FairOver: L NATALBANY R
LA0040, Livingston, LA
Built 1960 Load: 23.6 t ADT: 913
LA0040
FairOver: L NATALBANY REL
2.9 M E OF LA 43, Livingston, LA
Built 1960 Load: 23.6 t ADT: 913
LA1037
FairOver: LIZARD CREEK
LA1037, Livingston, LA
Built 1961 Load: 23.6 t ADT: 1,668
LA1025
FairOver: WEST COLYELL CR
LA1025, Livingston, LA
Built 1963 Load: 23.6 t ADT: 7,211
LA0441
FairOver: SABE CREEK
LA0441, St. Helena, LA
Built 1959 Load: 23.6 t ADT: 420
LA0440
FairOver: SPRING CREEK
1.3 M E OF LA 441, St. Helena, LA
Built 1958 Load: 23.6 t ADT: 409
LA0440
FairOver: TAYLOR CREEK
1.9 M E OF LA 441, St. Helena, LA
Built 1958 Load: 23.6 t ADT: 409
LA1041
FairOver: DUTCHMAN CREEK
LA1041, St. Helena, LA
Built 1962 Load: 23.6 t ADT: 403
LA1045
FairOver: NATALBANY RIVER
LA1045, St. Helena, LA
Built 1957 Load: 23.6 t ADT: 1,509
LA1046
FairOver: SPILLER CREEK
1.6 M E OF LA 441, St. Helena, LA
Built 1958 Load: 23.6 t ADT: 572
LA1046
FairOver: CAPS CREEK
2.5 M E OF LA 441, St. Helena, LA
Built 1958 Load: 23.6 t ADT: 572
LA1048
FairOver: CREEK
1.1 M SE OF LA 1047, St. Helena, LA
Built 1957 Load: 23.6 t ADT: 287
LA1048
FairOver: CREEK
1.2 M SE OF LA 1047, St. Helena, LA
Built 1957 Load: 23.6 t ADT: 287
Showing 1,701-1,750 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.