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
LA0154
PoorOver: RED CHUTE BAYOU
.01 MI SOUTH OF LA 157, Bossier, LA
Built 1980 Load: 21.7 t ADT: 3,124
LA3258
PoorOver: BAYOU
0.7 MI E of LA 383, Calcasieu, LA
Built 1969 Load: 21.7 t ADT: 1,878
STANLEY ROAD
PoorOver: ROGERS GULLY
1.66 MI E of LA 26, Jefferson Davis, LA
Built 1980 Load: 21.7 t ADT: 30
LA1190
PoorOver: DRAINAGE DITCH
0.23 MILES EAST OF LA 452, Avoyelles, LA
Built 1970 Load: 21.7 t ADT: 3,440
US0167
PoorOver: MOSLEY MILL CREEK
3.56 MI. NORTH OF LA 472, Grant, LA
Built 1975 Load: 21.7 t ADT: 11,712
LA0120
PoorOver: MACHIS BAYOU
9.11 MI. EAST OF LA 117, Natchitoches, LA
Built 1930 Load: 21.7 t ADT: 665
LA0431
PoorOver: VILLAR DRAINAGE
400 FT S of LA 42, Ascension, LA
Built 1971 Load: 21.7 t ADT: 9,608
LA1014
PoorOver: VALANCE DRAINAGE CANAL
3.3 Mi. E of LA 308, Assumption, LA
Built 1974 Load: 21.7 t ADT: 304
Nottingham St
PoorOver: DRAINAGE CANAL
NOTTINGHAM ST., East Baton Rouge, LA
Built 1963 Load: 21.7 t ADT: 300
LA0983
PoorOver: TIGER BAYOU
4.13 MI N JCT US 61, West Baton Rouge, LA
Built 1983 Load: 21.7 t ADT: 2,000
LA0040
PoorOver: SCOTT CREEK
2.6 M W OF LA 1062, Tangipahoa, LA
Built 1970 Load: 21.7 t ADT: 4,748
LA3046
PoorOver: LA SOU/KCS RR & CLAIBORN
0.85 MI N OF US 90, Jefferson, LA
Built 1957 Load: 22.0 t ADT: 7,806
S BROAD ST
PoorOver: I-10; RR; STS
2.0 MI S. OF TULANE AVE., Orleans, LA
Built 1951 Load: 22.0 t ADT: 27,209
LA0519
PoorOver: LA 519 OVER I 20 ARCADI
LA 519 OVER I-20, Bienville, LA
Built 1963 Load: 22.0 t ADT: 410
LA0789
PoorOver: FOSTER CREEK
4.4 MI SOUTH OF LA 169, Caddo, LA
Built 1971 Load: 22.0 t ADT: 1,504
Bailey Town Rd
PoorOver: BAILEY TN RD LTL CRNY B
6.82 MI. E. OF LA. 2, Claiborne, LA
Built 1975 Load: 22.0 t ADT: 65
US0090
PoorOver: KAYOUCHE COULEE
0.7 MI E OF LA 14, Calcasieu, LA
Built 1958 Load: 22.0 t ADT: 6,080
WEST 18TH STREET
PoorOver: GUM CREEK
0.6 MI W of LA 385, Calcasieu, LA
Built 1965 Load: 22.0 t ADT: 4,078
LA0027
PoorOver: KELSO BAYOU/HACKBERRY
10 MI S OF LA 108, Cameron, LA
Built 1977 Load: 22.0 t ADT: 3,034
LA0123
PoorOver: FISH CREEK
7.27 MI EAST OF US 167, Grant, LA
Built 1974 Load: 22.0 t ADT: 595
Neff Ln
PoorOver: DRAINAGE BAYOU
3.1 MI.ENE LA64 LA67, East Baton Rouge, LA
Built 1965 Load: 22.0 t ADT: 22
Orleans Ave
PoorOver: BAYOU SAINT JOHN
0.01MI.E OF N. JEFF.D, Orleans, LA
Built 1964 Load: 22.4 t
Orleans Ave
PoorOver: BAYOU SAINT JOHN
0.0 MI.E.OF N. JEFF., Orleans, LA
Built 1964 Load: 22.4 t
Ches Courville Rd
PoorOver: NICOLE COULEE
0.1 Mi. S of LA 352, St. Martin, LA
Built 1975 Load: 22.4 t ADT: 166
US0080
PoorOver: DORCHEAT RELIEF
.5 MI EAST OF US 371, Webster, LA
Built 1954 Load: 22.4 t ADT: 9,109
US0071
PoorOver: BAYOU RIGOLETTE
.7 MI SOUTH OF LA 8, Grant, LA
Built 1950 Load: 22.4 t ADT: 1,931
LA0621
PoorOver: BLACK BAYOU
0.2 M E of LA 44&LA 621, Ascension, LA
Built 1971 Load: 22.4 t ADT: 7,519
LA0067
PoorOver: Hurricane Creek
0.01 Mi E of LA 1, East Baton Rouge, LA
Built 1956 Load: 22.4 t ADT: 19,417
Brian Rd
PoorOver: DRAINAGE BAYOU
2.6 MI N.JCT LA 64 L, East Baton Rouge, LA
Built 1965 Load: 22.4 t ADT: 197
MOBILE STREET
PoorOver: WHISKEY CHITTO CREEK
VE 844 416, Vernon, LA
Built 1978 Load: 22.4 t ADT: 720
W. METAIRIE AVE
PoorOver: SUBURBAN CANAL
0.1MI.E.OF HOUMA BLV, Jefferson, LA
Built 1968 Load: 22.7 t ADT: 24,900
LA0082
PoorOver: TOUCHETS CANAL
0.29 MI W. OF LA 35, Vermilion, LA
Built 1957 Load: 22.7 t ADT: 2,899
LA0082
PoorOver: CANAL
3.22 MI W. OF LA 35, Vermilion, LA
Built 1957 Load: 22.7 t ADT: 2,899
Dogwood Trail
PoorOver: COOLEY BRANCH
2.75 MI. E. OF LA. 1, Webster, LA
Built 1979 Load: 22.7 t ADT: 159
LA0034
PoorOver: CHENIERE CREEK
2.35 MI EAST OF LA 546, Ouachita, LA
Built 1970 Load: 22.7 t ADT: 8,694
LA0394
PoorOver: Woodard Branch
0.9 MI. E OF US 171, Beauregard, LA
Built 1958 Load: 22.7 t ADT: 490
LA0397
PoorOver: ENGLISH BAYOU
0.3 MI N of I-10, Calcasieu, LA
Built 1963 Load: 22.7 t ADT: 9,291
BRYAN ROAD
PoorOver: BAYOU GRAND
1.9 MI W of LA 26, Jefferson Davis, LA
Built 1977 Load: 22.7 t ADT: 30
LA0361
PoorOver: BAYOU COCO
6.92 MI. SOUTH OF LA 29, Avoyelles, LA
Built 1930 Load: 22.7 t ADT: 668
LA1180
PoorOver: BAYOU DUBROCK
0.7 MILE SOUTH OF LA 1179, Avoyelles, LA
Built 1978 Load: 22.7 t ADT: 213
Brassette Ln
PoorOver: DITCH
0.69 MI E OF JCT LA 362, Avoyelles, LA
Built 1998 Load: 22.7 t ADT: 40
Chatlain Crossing
PoorOver: BAYOU NATCHITOCHES
APP. 10 M. E. OF LA 451, Avoyelles, LA
Built 2000 Load: 22.7 t ADT: 150
LA0156
PoorOver: CREEK
9.7 MI. E OF INT LA9, Natchitoches, LA
Built 1926 Load: 22.7 t ADT: 525
LA0174
PoorOver: BAYOU-SAN-PATRICIO
0.44 M. E. OF US 171, Sabine, LA
Built 1977 Load: 22.7 t ADT: 1,099
LA1231-2
PoorOver: Port De Luce Creek
0.71 MI. EAST OF US 167, Winn, LA
Built 1983 Load: 22.7 t ADT: 116
LA1229
PoorOver: REDLAND CREEK RELIEF
.74 MI WEST OF LA 34, Winn, LA
Built 1974 Load: 22.7 t ADT: 39
US0084
PoorOver: CASTOR CREEK
.01 MI EAST OF US 165, LaSalle, LA
Built 1962 Load: 22.7 t ADT: 1,473
Port Hickey Rd
PoorOver: DRAINAGE BAYOU
2.5 M W of US 61, East Baton Rouge, LA
Built 1960 Load: 22.7 t ADT: 941
Port Hudson-Pride
PoorOver: DUFF BAYOU
6.2 MI. E. of LA 67, East Baton Rouge, LA
Built 1960 Load: 22.7 t ADT: 1,298
LA0960
PoorOver: BLUFF CREEK
.4 miles N of La 63, East Feliciana, LA
Built 1967 Load: 22.7 t ADT: 653
Showing 12,301-12,350 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.