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
E. Simcoe St.
FairOver: COULEE
0.18 Mi E of LA 182, Lafayette, LA
Built 1970 Load: 21.1 t ADT: 2,760
US0190
FairOver: BAYOU TECHE
0.3 MI W of LA 103, St. Landry, LA
Built 1964 Load: 21.1 t ADT: 8,559
Howard Venable Rd.
FairOver: Bayou Wikoff Branch
1.0 Mi. S. of La 754, St. Landry, LA
Built 1975 Load: 21.1 t ADT: 250
LA0031
FairOver: DRAINAGE CANAL
1.79 MI N OF LA 1.79, St. Martin, LA
Built 1957 Load: 21.1 t ADT: 3,996
Chatsworth Rd.
FairOver: FRANKLIN CANAL
1.2 Mi S of LA 3211, St. Mary, LA
Built 1985 Load: 21.1 t ADT: 1,950
I0049
FairOver: LA 526 INT
1.35M SOUTH OF LA3132 INT, Caddo, LA
Built 1991 Load: 21.1 t ADT: 28,142
Vardaman Rd
FairOver: CYPRESS BAYOU TRIB
0.2M W of Kville Keatchi, Caddo, LA
Built 1991 Load: 21.1 t ADT: 58
Keith Rd
FairOver: Trib to Buchanan B
50 FT. N Kville-Sridge, Caddo, LA
Built 1982 Load: 21.1 t ADT: 59
Blanchard Latex Rd
FairOver: SHETTLEWORTH BAYOU TRIB
0.6M EAST OF LA 169, Caddo, LA
Built 1991 Load: 21.1 t ADT: 39
Old Moorings-Latex
FairOver: TETE BAYOU
0.4 MI SW OF LA 169, Caddo, LA
Built 1996 Load: 21.1 t ADT: 57
MONTEREY SCHOOL RD
FairOver: JEEMS BAYOU TRIB
1.0 M WEST OF LA 1, Caddo, LA
Built 1991 Load: 21.1 t ADT: 59
Standard Oil Rd
FairOver: TYSON BRANCH
2.0 M EAST OF LA 1, Caddo, LA
Built 1990 Load: 21.1 t ADT: 40
LA0803-1
FairOver: LITTLE CROOKED CR
.19 MI NORTH OF US 371, Webster, LA
Built 1949 Load: 21.1 t ADT: 4,087
LA0531
FairOver: GEE CREEK
2.74 MI NORTH OF LA 792, Webster, LA
Built 1972 Load: 21.1 t ADT: 1,230
BULLRUN RD
FairOver: LA 580 CANAL
N. HWY 580 - 3 MI E, East Carroll, LA
Built 1999 Load: 21.1 t ADT: 333
LINCOLN HILLS DR
FairOver: CANEY CREEK
0.31 MI. E. INT. HWY, Ouachita, LA
Built 1979 Load: 21.1 t ADT: 150
LA0134
FairOver: COLEWA CREEK
1.3 MI EAST OF LA 183, Richland, LA
Built 1953 Load: 21.1 t ADT: 733
FORTENBERRY RD
FairOver: CYPRESS CREEK
LOG MI 2.61 FR 443 TO ODE, Richland, LA
Built 1987 Load: 21.1 t ADT: 22
LIVE OAK ST
FairOver: MILL CREEK
0.3 MI SOUTTH OF LA 1156, Allen, LA
Built 2007 Load: 21.1 t ADT: 1,300
LA0099
FairOver: DRAIN
5.1 MI N OF I-10, Jefferson Davis, LA
Built 1931 Load: 21.1 t ADT: 1,405
EIGHTH STREET
FairOver: BAYOU
0.6 MI E of LA 26, Jefferson Davis, LA
Built 1970 Load: 21.1 t ADT: 160
WELSH CANAL ROAD
FairOver: WELSH CANAL
0.4 MI E of LA 99, Jefferson Davis, LA
Built 1974 Load: 21.1 t ADT: 60
FDR 155
FairOver: SADDLE BAYOU OVFLOW
NO DATA ENTERED, Grant, LA
Built 1962 Load: 21.1 t ADT: 15
LA0117
FairOver: BAYOU SANTA BARB
1.79 MI. SOUTH OF LA 478, Natchitoches, LA
Built 1955 Load: 21.1 t ADT: 1,513
Neil Wagoner
FairOver: CREOSOTE BRANCH
0.48 MI. EAST OF LA 34, Winn, LA
Built 1985 Load: 21.1 t ADT: 400
LA0074
FairOver: GRAND GOUDINE
1.4 M W of US 61&LA 47, Ascension, LA
Built 1955 Load: 21.1 t ADT: 13,875
US0190
FairOver: JONES CREEK
US0190, East Baton Rouge, LA
Built 1961 Load: 21.1 t ADT: 17,263
Barringer Foreman
FairOver: DIVERSION CANAL
1.0 MI N JCT I-10 LA 42, East Baton Rouge, LA
Built 1996 Load: 21.1 t ADT: 5,322
LA0441
FairOver: HUTCHINSON CREEK
LA0441, St. Helena, LA
Built 1959 Load: 21.1 t ADT: 420
SHADY VIEW LANE
FairOver: DRAIN
0.60 MI W OF LA.21, St. Tammany, LA
Built 2005 Load: 21.1 t ADT: 250
LA1051
FairOver: BUTTON CREEK
LA1051, Tangipahoa, LA
Built 1975 Load: 21.1 t ADT: 1,870
S. Range Rd
FairOver: PONCHATOULA CREEK
2 MI N OF JCT SR 22, Tangipahoa, LA
Built 1956 Load: 21.1 t ADT: 6,250
Phoenix square
FairOver: CREEK
5TH AV HAMMOND PHOENIX SQ, Tangipahoa, LA
Built 1978 Load: 21.1 t ADT: 3,306
Pamona St
FairOver: BONNABEL CANAL
O.01 MI.E.OF MELODY., Jefferson, LA
Built 1970 Load: 21.4 t
LA0001
FairOver: INTRACOASTAL CANL
.05 MI NORTH OF LA 24, Lafourche, LA
Built 1961 Load: 21.4 t ADT: 3,276
FRANCE ST
FairOver: FLORIDA AVE.
1.5 MI.S.OF US.I.10, Orleans, LA
Built 1960 Load: 21.4 t
LA3017
FairOver: BAYOU BARATARIA
3.9 MI WEST OF LA 23, Plaquemines, LA
Built 1971 Load: 21.4 t ADT: 22,518
ST LOUIS CANAL RD
FairOver: ST LOUIS CANAL
0166 LOG MI FROM IN, Terrebonne, LA
Built 1976 Load: 21.4 t ADT: 6,313
ST LOUIS CANAL RD
FairOver: ST LOUIS CANAL
2.3 MI N OF LA 3040, Terrebonne, LA
Built 1976 Load: 21.4 t ADT: 3,492
LA0095
FairOver: BAYOU MALLET
0.1 MI NORTH OF LA 358, Acadia, LA
Built 1958 Load: 21.4 t ADT: 1,370
LA0342
FairOver: CREEK
0.2 MI EAST OF LA 719, Lafayette, LA
Built 1955 Load: 21.4 t ADT: 1,338
US0190
FairOver: BAYOU TECHE
0.15 MI E of LA 742, St. Landry, LA
Built 1964 Load: 21.4 t ADT: 8,559
Bridge Rd
FairOver: LOWER ATCHAFALAYA RIVER
0.2 Mi. E. of LA 182, St. Mary, LA
Built 1990 Load: 21.4 t ADT: 610
LA0793
FairOver: LEATHERMAN CREEK
1.21 MI WEST OF LA 794, Bienville, LA
Built 1977 Load: 21.4 t ADT: 125
LA0537
FairOver: STILLHOUSE BAYOU
8.06 MI NORTH OF LA 2, Bossier, LA
Built 1976 Load: 21.4 t ADT: 67
Tucson Lane
FairOver: TUCSON LN TRBY BUCHAN B.
1 mile SE of La 525, Caddo, LA
Built 1984 Load: 21.4 t ADT: 39
Bea Lane
FairOver: TRIB. TO GILMER BAYOU
1.0 MI. SOUTH OF LA 511, Caddo, LA
Built 1997 Load: 21.4 t ADT: 38
GILBERT DRIVE
FairOver: PIERREMONT DITCH
0.5 MI. NORTH OF LA 511, Caddo, LA
Built 1984 Load: 21.4 t ADT: 100
Kendrick Rd
FairOver: TRIB.-BLACK BAYOU LAKE
0.2M WEST OF LA 1, Caddo, LA
Built 1992 Load: 21.4 t ADT: 38
Hosston Rodessa Rd
FairOver: HORSE CREEK
3.19 M SE OF LA 1, Caddo, LA
Built 1990 Load: 21.4 t ADT: 59
Showing 1,301-1,350 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.