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
WAFER RD
FairOver: SPRING CREEK
0.25 MILES NORTH OF LA 54, Lincoln, LA
Built 2015 Load: 15.9 t ADT: 75
NORTHEAST DR
FairOver: DESIARD BAYOU
NORTHEAST LA UNIVERS, Ouachita, LA
Built 1966 Load: 15.9 t ADT: 500
LA3048
FairOver: BURNS BAYOU
2.4 MI NORTH OF LA 584, Richland, LA
Built 1960 Load: 15.9 t ADT: 1,594
US0165
FairOver: DRAIN
3.2 MI. N OF INT LA1153, Allen, LA
Built 1931 Load: 15.9 t ADT: 11,113
ADAMS ROAD
FairOver: LITTLE MARSH BAYOU
1.5 MI E of TOPSY BEL RD, Jefferson Davis, LA
Built 2015 Load: 15.9 t ADT: 100
Lakeshore
FairOver: RANGE CREEK
LAKESHORE ROAD, Winn, LA
Built 1988 Load: 15.9 t ADT: 91
LA0004
FairOver: SQUIRREL CREEK
1.0 MI WEST OF LA 557, Caldwell, LA
Built 1954 Load: 15.9 t ADT: 338
N Robert Wilson Rd
FairOver: SMITH BAYOU
2.9 MI SE DUTCHTOWN, Ascension, LA
Built 1973 Load: 15.9 t ADT: 120
Centerville Rd
FairOver: DRAINAGE BAYOU
0.5 Mi N of LA 76, Iberville, LA
Built 1970 Load: 15.9 t ADT: 110
Gene Hughes Rd
FairOver: WEST HOG BRANCH
9.5 MI NE OF RT 63 E, Livingston, LA
Built 1970 Load: 15.9 t ADT: 100
LA0450
FairOver: DRAIN
1.1 M NW OF LA 25, St. Tammany, LA
Built 1958 Load: 15.9 t ADT: 1,822
LA0010
FairOver: CANEY BRANCH
0.8 M E OF LA 1054, Tangipahoa, LA
Built 1955 Load: 15.9 t ADT: 1,335
Leblanc Rd
FairOver: CREEK
6 MI NE OF SR 22 EXI, Tangipahoa, LA
Built 1974 Load: 15.9 t ADT: 4
Needham Rd
FairOver: HOLDEN BRANCH
.01 WEST OF RIVERDALE HT, Tangipahoa, LA
Built 1972 Load: 15.9 t ADT: 4
CANAL BLVD
FairOver: LAFOURCHE BAYOU
1 0003 LOG MI FROM I, Lafourche, LA
Built 1966 Load: 16.2 t ADT: 8,737
CANAL BLVD
FairOver: LAFOURCHE BAYOU
0003 LOG MI FROM INT, Lafourche, LA
Built 1966 Load: 16.2 t ADT: 8,110
Back Rd
FairOver: Patout Canal
2.1 Mi. S. of La 673, Iberia, LA
Built 1976 Load: 16.2 t ADT: 18
Broken Arrow Rd
FairOver: Coulee
0.40 Mi NW of La 3212, Iberia, LA
Built 1979 Load: 16.2 t ADT: 35
Birdsong Rd.
FairOver: GASTON COULEE
0.02 Mi E of LA 182, Lafayette, LA
Built 1984 Load: 16.2 t ADT: 400
Jules Lagrange Rd
FairOver: COULEE DE MARKS
1.58 Mi S of LA 347, St. Landry, LA
Built 1967 Load: 16.2 t ADT: 1,550
Penn Rd
FairOver: COULEE
0.6 Mi S of La 182, St. Mary, LA
Built 1967 Load: 16.2 t ADT: 50
Amerada Rd
FairOver: GRAND MARAIS BAYOU
3.0 Mi. SW of La 92, Vermilion, LA
Built 1980 Load: 16.2 t ADT: 160
Sparks-Davis Rd
FairOver: SPKS-DAVS RD.BUCHANAN B.
1.4 M.SO.KVILE SPRGR, Caddo, LA
Built 1975 Load: 16.2 t ADT: 59
US0165
FairOver: COULEE BAYOU
2.0 MI EAST OF LA 830-3, Morehouse, LA
Built 1932 Load: 16.2 t ADT: 5,027
LA0012
FairOver: CREEK
3.2 MI. E OF LA 27, Beauregard, LA
Built 1931 Load: 16.2 t ADT: 4,041
LA0113
FairOver: CREEK
0.60 MI. N OF LA 112, Beauregard, LA
Built 1972 Load: 16.2 t ADT: 709
LA1147
FairOver: JIM BURNEY BRANCH
0.2 MI NW OF LA 113, Beauregard, LA
Built 1967 Load: 16.2 t ADT: 261
LA1147
FairOver: DRY BRANCH
7.4 MI. NE OF INT LA113, Beauregard, LA
Built 1967 Load: 16.2 t ADT: 624
LA0101
FairOver: INDIAN BAYOU CANAL
3.0 MI N of LA 14, Calcasieu, LA
Built 1983 Load: 16.2 t ADT: 3,166
US0090
FairOver: DRAIN
1.42 MI EAST OF LA 1131, Jefferson Davis, LA
Built 1934 Load: 16.2 t ADT: 4,262
FDR 273
FairOver: LITTLE BRUSHY CREEK
NATIONAL FOREST, Rapides, LA
Built 1970 Load: 16.2 t ADT: 30
FDR 613
FairOver: CREEK
LOGMI 1.53 FR 529 TO, Grant, LA
Built 1972 Load: 16.2 t ADT: 43
FDR 400
FairOver: CREEK
6.2 M. ENE. OF ROSEP, Vernon, LA
Built 1970 Load: 16.2 t ADT: 110
FDR 400
FairOver: BIG BOX BRANCH
8.0 M. W. OF CRAVENS, Vernon, LA
Built 1970 Load: 16.2 t ADT: 110
US0165-B
FairOver: RED RIVER CITY STS.
0.11 M E OF INT LA 1208-3, Rapides, LA
Built 1985 Load: 16.2 t ADT: 6,865
LA0914
FairOver: BLACK BAYOU
0.5 Mi E of LA 913, Catahoula, LA
Built 1965 Load: 16.2 t ADT: 77
LA0772
FairOver: HAIRS CREEK
1.0 MI EAST OF US 84, LaSalle, LA
Built 1969 Load: 16.2 t ADT: 116
LA0037
FairOver: TWELVE MILE CREEK
LA0037, St. Helena, LA
Built 1958 Load: 16.2 t ADT: 1,730
LA0038
FairOver: WILSON CREEK
2.1 Mi NE OF LA 1056, Tangipahoa, LA
Built 1961 Load: 16.2 t ADT: 1,648
FALGOUT CANAL RD
FairOver: HOUMA NAVIGATION CANAL
1.0 MI W OF LA 57, Terrebonne, LA
Built 1958 Load: 16.3 t ADT: 363
LA0733
FairOver: VERMILION RIVER
1.23 MI EAST OF US 167, Lafayette, LA
Built 1951 Load: 16.3 t ADT: 15,593
Breaux Rd.
FairOver: COULEE
1.5 MI S of LA 724, Lafayette, LA
Built 1970 Load: 16.3 t ADT: 200
LA0082
FairOver: VERMILION R PERRY
1.0 MI S. OF LA 330, Vermilion, LA
Built 1955 Load: 16.3 t ADT: 2,899
LA0335
FairOver: ROBINS CANAL
0.07 MI W. OF LA 3093, Vermilion, LA
Built 1967 Load: 16.3 t ADT: 284
Minos Rd
FairOver: COULEE
0.4 Mi E of La 35, Vermilion, LA
Built 1996 Load: 16.3 t ADT: 86
LA0004
FairOver: COW CREEK
2.63 MI EAST OF LA 34, Jackson, LA
Built 1952 Load: 16.3 t ADT: 897
LA0542
FairOver: CREEK
2.11 MI EAST OF US 167, Jackson, LA
Built 1959 Load: 16.3 t ADT: 485
LA0155
FairOver: KEPPLER CREEK
1.3 MI EAST OF LA 542, Jackson, LA
Built 1960 Load: 16.3 t ADT: 351
LA0576
FairOver: MUDDY BAYOU
6.0 MI SOUTH OF LA 132, Richland, LA
Built 1968 Load: 16.3 t ADT: 162
NURSERY RD
FairOver: CANEY CREEK
0.5 MI N of Ward Line Rd, Allen, LA
Built 1970 Load: 16.3 t ADT: 859
Showing 401-450 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.