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
MARVIN HEAD RD
FairOver: SOUTH PRONG PRARION BAYO
U MI. E. HWY. 557, Ouachita, LA
Built 1970 Load: 20.9 t ADT: 228
US0080
FairOver: COW BAYOU
1.9 MI EAST OF LA 583, Richland, LA
Built 1930 Load: 20.9 t ADT: 1,451
US0080
FairOver: CREEK
2.6 MI EAST OF LA 183, Richland, LA
Built 1930 Load: 20.9 t ADT: 1,451
US0167
FairOver: CORNEY BAYOU REL
2.0 MI SOUTH OF LA 15, Union, LA
Built 1952 Load: 20.9 t ADT: 422
US0167
FairOver: NORTH SLOUGH
1.5 MI SOUTH OF LA 15, Union, LA
Built 1952 Load: 20.9 t ADT: 422
LA0134
FairOver: LITTLE COLEWA BAYOU
4.7 MI EAST OF LA 585, West Carroll, LA
Built 1954 Load: 20.9 t ADT: 692
LA0134
FairOver: LITTLE CREEK
2.1 MI WEST OF LA 17, West Carroll, LA
Built 1954 Load: 20.9 t ADT: 759
LA0389
FairOver: CYPRESS CREEK
6.8 MI. S OF INT US190, Beauregard, LA
Built 1951 Load: 20.9 t ADT: 556
LA0389
FairOver: PULLEM CREEK
2.85 MI. S OF INT US190, Beauregard, LA
Built 1951 Load: 20.9 t ADT: 442
LA0389
FairOver: HOOSIER CREEK
1.95 MI. S OF INT US190, Beauregard, LA
Built 1951 Load: 20.9 t ADT: 442
LA0112
FairOver: WEST RELIEF
0.5 MI E of US 171, Beauregard, LA
Built 1957 Load: 20.9 t ADT: 718
LA0112
FairOver: FLAT CREEK
0.6 MI E of US 171, Beauregard, LA
Built 1957 Load: 20.9 t ADT: 718
LA0112
FairOver: WEST RELIEF
0.5 MI E of LA 1146, Beauregard, LA
Built 1957 Load: 20.9 t ADT: 718
LA0112
FairOver: CREEK
0.6 MI E of LA 1146, Beauregard, LA
Built 1957 Load: 20.9 t ADT: 718
LA0112
FairOver: BUNDICK CREEK
0.7 MI E of LA 1146, Beauregard, LA
Built 1957 Load: 20.9 t ADT: 718
LA0112
FairOver: EAST RELIEF
0.8 MI E of LA 1146, Beauregard, LA
Built 1957 Load: 20.9 t ADT: 718
LA0112
FairOver: HOG BRANCH
0.3 MI E of LA 399, Beauregard, LA
Built 1958 Load: 20.9 t ADT: 718
LA0112
FairOver: WHISKY CHITTO CREEK
0.6 MI E of LA 399, Beauregard, LA
Built 1958 Load: 20.9 t ADT: 718
LA0112
FairOver: DEER LAKE SLOUGH
1.0 MI. E OF LA 399, Beauregard, LA
Built 1958 Load: 20.9 t ADT: 718
LA0112
FairOver: BEAR SLOUGH
1.3 MI E of LA 399, Beauregard, LA
Built 1958 Load: 20.9 t ADT: 718
US0090
FairOver: ENGLISH BAYOU
1.17 MI EAST OF LA 3256, Calcasieu, LA
Built 1953 Load: 20.9 t ADT: 6,080
US0090
FairOver: ENGLISH BAYOU
3.1 MI EAST OF LA 3256, Calcasieu, LA
Built 1953 Load: 20.9 t ADT: 6,080
LA0027
FairOver: BUXTON CREEK
0.5 MI N OF LA 12, Calcasieu, LA
Built 1953 Load: 20.9 t ADT: 4,683
LA0108
FairOver: CHOUPIQUE BAYOU
LA0108, Calcasieu, LA
Built 1962 Load: 20.9 t ADT: 1,553
LA0029
FairOver: BAYOU BOEUF
0.1 MILE NORTH OF LA 1176, Avoyelles, LA
Built 1952 Load: 20.9 t ADT: 1,799
LA0120
FairOver: WINN CREEK
6.8 MI. E OF INT LA487, Natchitoches, LA
Built 1950 Load: 20.9 t ADT: 1,715
LA0107
FairOver: BRUSHY BRANCH
1.04 MI. NORTH OF LA 3128, Rapides, LA
Built 1953 Load: 20.9 t ADT: 3,354
LA0474
FairOver: DRY CREEK
6.70 MI EAST OF LA 191, Sabine, LA
Built 1956 Load: 20.9 t ADT: 1,105
LA0474
FairOver: NASHES CREEK
4.28 MI EAST OF LA 191, Sabine, LA
Built 1956 Load: 20.9 t ADT: 1,105
LA0501
FairOver: KYIAIES CREEK
.47 MI SOUTH OF LA 156, Winn, LA
Built 1975 Load: 20.9 t ADT: 1,026
LA0127
FairOver: MILL CREEK
.2 MI SOUTH OF LA 503, LaSalle, LA
Built 1950 Load: 20.9 t ADT: 3,888
LA0127
FairOver: BAYOU FUNNYLOUIS
.9 MI NORTH OF LA 503, LaSalle, LA
Built 1956 Load: 20.9 t ADT: 3,888
LA0022
FairOver: BAYOU FRANCOIS
LA0022, Ascension, LA
Built 1954 Load: 20.9 t ADT: 9,674
LA0022
FairOver: DENHAM CANAL
LA0022, Ascension, LA
Built 1959 Load: 20.9 t ADT: 11,980
LA0022
FairOver: LITTLE LAKE RELIEF
1.8 Mi. E. of LA 937, Ascension, LA
Built 1959 Load: 20.9 t ADT: 11,980
LA0037
FairOver: LILLYS CREEK
0.4 M NE of LA 37&LA 63, East Feliciana, LA
Built 1955 Load: 20.9 t ADT: 3,362
LA0074
FairOver: BAYOU BREAUX
0.25 M NW LA 74&LA 3115, Iberville, LA
Built 1955 Load: 20.9 t ADT: 5,692
LA0441
FairOver: KILLIAN BRANCH
0.1 M N OF LA 16, St. Helena, LA
Built 1957 Load: 20.9 t ADT: 584
LA0441
FairOver: CRITTENDON CREEK
LA0441, St. Helena, LA
Built 1959 Load: 20.9 t ADT: 420
LA1078
FairOver: COWPEN BRANCH
LA1078, St. Tammany, LA
Built 1957 Load: 20.9 t ADT: 883
LA1078
FairOver: HORSE BRANCH
LA1078, St. Tammany, LA
Built 1957 Load: 20.9 t ADT: 883
US0190
FairOver: HOLDEN BRANCH
1.6 M E OF LA 445, Tangipahoa, LA
Built 1954 Load: 20.9 t ADT: 8,262
LA0436
FairOver: BURCHS CREEK
LA0436, Washington, LA
Built 1957 Load: 20.9 t ADT: 2,434
LA0436
FairOver: LAWRENCE CREEK
LA0436, Washington, LA
Built 1957 Load: 20.9 t ADT: 1,148
LA0436
FairOver: MILLER CREEK
1.8 M W OF LA 62, Washington, LA
Built 1957 Load: 20.9 t ADT: 1,148
LA0436
FairOver: THOMAS BRANCH
LA0436, Washington, LA
Built 1957 Load: 20.9 t ADT: 1,148
LA0424
FairOver: DRAIN
1.2 M N OF LA 438, Washington, LA
Built 1969 Load: 20.9 t ADT: 1,873
US0090-B
FairOver: HARVEY CANAL/STS/RR
1.4 MI WEST OF LA 23, Jefferson, LA
Built 1987 Load: 21.1 t ADT: 67,143
LA0308-S
FairOver: BAYOU LAFOURCHE
.01 MI EAST OF LA 1, Lafourche, LA
Built 1972 Load: 21.1 t ADT: 9,051
LA0055
FairOver: MADISON CANAL
8.8 MI SOUTH OF LA 58, Terrebonne, LA
Built 1970 Load: 21.1 t ADT: 276
Showing 1,251-1,300 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.