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
TURNER RD
FairOver: CREEK
2.7 MI N of LA 26, Allen, LA
Built 1970 Load: 20.0 t ADT: 356
TURNER RD
FairOver: CREEK
5.2 MI NORTH OF LA 26, Allen, LA
Built 1970 Load: 20.0 t ADT: 314
US0165
FairOver: FLAGON BAYOU RELIEF
0.44 M. N. OF JCT LA 623, Rapides, LA
Built 1956 Load: 20.0 t ADT: 32,758
US0165
FairOver: FLAGON BAYOU
0.61 MI. NORTH OF LA 623, Rapides, LA
Built 1956 Load: 20.0 t ADT: 32,758
LA0004
FairOver: CREW BAYOU
2.7 MI EAST OF LA 559, Caldwell, LA
Built 1957 Load: 20.0 t ADT: 1,558
LA0124
FairOver: BEAR BRANCH
3.1 MI EAST OF US 165, LaSalle, LA
Built 1978 Load: 20.0 t ADT: 1,838
LA0030
FairOver: ELBOW BAYOU
2.1M NW of LA 42&LA 327-S, East Baton Rouge, LA
Built 1961 Load: 20.0 t ADT: 12,779
LA0426
FairOver: WARD CREEK N.BR.
LA0426, East Baton Rouge, LA
Built 1956 Load: 20.0 t ADT: 19,329
Tunica St.
FairOver: Drainage Cr
0.5 Mi N. of LA 1263, West Feliciana, LA
Built 1974 Load: 20.0 t ADT: 180
LA1026
FairOver: GRAYS CREEK
LA1026, Livingston, LA
Built 1963 Load: 20.0 t ADT: 9,389
LA0037
FairOver: AMITE R RELIEF
0.1 M SW OF LA 63, St. Helena, LA
Built 1955 Load: 20.0 t ADT: 3,362
LA0037
FairOver: LILLEGS CREEK
1.1 M N OF LA 63, St. Helena, LA
Built 1955 Load: 20.0 t ADT: 1,241
LA0442
FairOver: CREEK
0.1 M E OF US 51, Tangipahoa, LA
Built 1955 Load: 20.0 t ADT: 1,762
LA0445
FairOver: SIMS CREEK
1.0 M N OF LA 445, Tangipahoa, LA
Built 1957 Load: 20.0 t ADT: 8,876
LA0445
FairOver: WASHLEY CREEK
LA0445, Tangipahoa, LA
Built 1957 Load: 20.0 t ADT: 8,876
LA1249
FairOver: CREEK
3MISPUMPKINCTR XIT PUMPCT, Tangipahoa, LA
Built 1994 Load: 20.0 t ADT: 6,110
George Rd
FairOver: PORKER CREEK
1.58M SOUTH OF LA 1063, Tangipahoa, LA
Built 1992 Load: 20.0 t ADT: 560
Briar Patch Cemt
FairOver: LITTLE CHAPEPEELA CREEK
1.1 MI. S OF E BELL RD., Tangipahoa, LA
Built 1992 Load: 20.0 t ADT: 438
Hayden Rd
FairOver: EAST FORK CREEK
2.0M SE PF JCT 10 & 1054, Tangipahoa, LA
Built 1992 Load: 20.0 t ADT: 169
Green farm Rd
FairOver: CREEK
3.0M NE OF JCT 1057&1061, Tangipahoa, LA
Built 1992 Load: 20.0 t ADT: 65
LA0424
FairOver: DRAIN
1.0 M N OF LA 438, Washington, LA
Built 1969 Load: 20.0 t ADT: 1,873
Nero St
FairOver: BONNABEL CANAL
0.5 MI.E OF CAUSEWAY, Jefferson, LA
Built 1960 Load: 20.1 t
Morrison Rd
FairOver: DRAINAGE CANAL
0.75 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 20.1 t
Morrison Rd
FairOver: CANAL
0.3 MI.W.OF BULLARD, Orleans, LA
Built 1960 Load: 20.1 t
LA0058
FairOver: BAYOU TERREBONNE
1.58 MI EAST OF LA 56, Terrebonne, LA
Built 1964 Load: 20.1 t ADT: 5,194
BAYOUSIDE DR
FairOver: CANAL
0600 LOG MI FROM IN, Terrebonne, LA
Built 1974 Load: 20.1 t ADT: 557
BULL RUN RD
FairOver: COCKE CANAL
4.1 MI W OF LA 311, Terrebonne, LA
Built 1980 Load: 20.1 t ADT: 447
Dailey Rd
FairOver: Canal
0.6 Mi. S. of I10, Acadia, LA
Built 1981 Load: 20.1 t ADT: 288
W. Bluebird Dr.
FairOver: COULEE
0.6 Miles NE of La 3073, Lafayette, LA
Built 1989 Load: 20.1 t ADT: 1,480
Idlewood Blvd.
FairOver: COULEE
0.25 Mi W of US 167, Lafayette, LA
Built 1971 Load: 20.1 t ADT: 720
Bajat Rd
FairOver: COULEE
0.1 Mi S of Ombrage Rd, Lafayette, LA
Built 1979 Load: 20.1 t ADT: 317
Arnaudville Rd.
FairOver: Bayou Carencro
1.2 MI N OF LA 1252, Lafayette, LA
Built 1977 Load: 20.1 t ADT: 700
Little Teche Rd.
FairOver: DRAINAGE CANAL
2.54 Mi S of LA 742, St. Landry, LA
Built 1979 Load: 20.1 t ADT: 240
LA3083
FairOver: C COTEAU HOLMES
1.07 MI WEST OF LA 679, St. Martin, LA
Built 1967 Load: 20.1 t ADT: 1,360
LA3083
FairOver: C COTEAU HOLMES
1.80 MI East OF LA 679, St. Martin, LA
Built 1967 Load: 20.1 t ADT: 1,360
LA0082
FairOver: WEST RELIEF
12.23 Mi S of LA 3147, Vermilion, LA
Built 1958 Load: 20.1 t ADT: 2,899
LA0002
FairOver: LITTLE CYPRESSBAY
.40 MI EAST OF LA 3, Bossier, LA
Built 1960 Load: 20.1 t ADT: 4,236
BRETWOOD DR
FairOver: BUCHANAN BAYOU TRIB
0.2M E OF CADDO PH RD 143, Caddo, LA
Built 1993 Load: 20.1 t ADT: 40
BRANCHWOOD DR
FairOver: BUCHANAN BAYOU TRIB
0.04M E OF CADDO RD 143, Caddo, LA
Built 1993 Load: 20.1 t ADT: 40
US0167
FairOver: CREEK
20.88 MI N WINN PARISH LN, Jackson, LA
Built 1951 Load: 20.1 t ADT: 8,681
LA0505
FairOver: ANTWINE CREEK
.61 MI WEST OF US 167, Jackson, LA
Built 1975 Load: 20.1 t ADT: 873
US0165
FairOver: AT JONES
3.7 MI NORTH OF NORTH INT, Morehouse, LA
Built 1926 Load: 20.1 t ADT: 1,405
WASHINGTON ST
FairOver: YOUNGS BAYOU
WASHINGTON ST. MONRO, Ouachita, LA
Built 1961 Load: 20.1 t ADT: 2,000
US0080
FairOver: DRAIN
3.2 MI WEST OF SOUTH INT, Richland, LA
Built 1955 Load: 20.1 t ADT: 2,747
US0171
FairOver: DRAINAGE
0.5 MI N OF US 90/LA 12, Beauregard, LA
Built 2007 Load: 20.1 t ADT: 12,466
LA0452
FairOver: BAYOU ROUGE
3.31 MI. NORTH OF LA 1190, Avoyelles, LA
Built 1953 Load: 20.1 t ADT: 8,736
FDR 570
FairOver: SALINE BAYOU TRIB.
STRANGE ROAD, Natchitoches, LA
Built 1968 Load: 20.1 t ADT: 30
FDR 570
FairOver: CHOCTAW CREEK
STRANGE ROAD RT. 570, Natchitoches, LA
Built 1970 Load: 20.1 t ADT: 30
FDR570
FairOver: CHOCTAW CREEK
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1970 Load: 20.1 t ADT: 30
LA0107
FairOver: BRUSHY FORK RELIEF
1.17 MI. NORTH OF LA 3128, Rapides, LA
Built 1953 Load: 20.1 t ADT: 3,354
Showing 1,051-1,100 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.