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
LA0533
FairOver: GEE CREEK
6.58 MI NORTH OF LA 519, Claiborne, LA
Built 1976 Load: 17.8 t ADT: 21
US0165
FairOver: DRAIN
10.0 MI. N. OF LA 26, Allen, LA
Built 1931 Load: 17.8 t ADT: 11,886
LA1147
FairOver: SHORT PRONG
6.32 MI. N OF INT LA113, Beauregard, LA
Built 1967 Load: 17.8 t ADT: 624
FDR 102
FairOver: LOG BAYOU
NO DATA ENTERED, Grant, LA
Built 1965 Load: 17.8 t ADT: 12
FDR 145
FairOver: BIG CREEK
NO DATA ENTERED, Grant, LA
Built 1970 Load: 17.8 t ADT: 37
FDR 247
FairOver: NORTH FORK BAYOU CLEAR
NO DATA ENTERED, Rapides, LA
Built 1970 Load: 17.8 t ADT: 30
FDR 287
FairOver: LOVING CREEK
NATIONAL FOREST ROAD, Rapides, LA
Built 1963 Load: 17.8 t ADT: 60
FDR 304
FairOver: GIN BRANCH
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1967 Load: 17.8 t ADT: 30
FDR 360
FairOver: BAYOU LIVROGNE
6.5 M. WSW.OF GORUM, Natchitoches, LA
Built 1978 Load: 17.8 t ADT: 30
FDR 360
FairOver: STEEP BRANCH
5.8 M. WNM. OF GORUM, Natchitoches, LA
Built 1975 Load: 17.8 t ADT: 30
FDR 542
FairOver: COULEY CREEK
LOGMI 0.54 FR 504 TO, Winn, LA
Built 1965 Load: 17.8 t ADT: 19
LA0126
FairOver: CREEK
2.1 MI S OF LA 8, Catahoula, LA
Built 1971 Load: 17.8 t ADT: 878
US0084
FairOver: HEMP CREEK
.5 MI EAST OF LA 127, LaSalle, LA
Built 1955 Load: 17.8 t ADT: 5,122
S Purpera Ave
FairOver: FRANCOIS LAT
0.04 Mi. N. of LA 30, Ascension, LA
Built 1976 Load: 17.8 t ADT: 750
US0090
FairOver: BAYOU BOEUF
ASSUMPTION PH LN US 90, Assumption, LA
Built 1998 Load: 17.8 t ADT: 10,035
US0190
FairOver: LIVELY BAYOU
US0190, East Baton Rouge, LA
Built 1961 Load: 17.8 t ADT: 17,284
LA0955
FairOver: WHITE BAYOU
LA0955, East Feliciana, LA
Built 1962 Load: 17.8 t ADT: 3,045
LA0412
FairOver: Black Creek
2.96 Mi. E. of LA 412, East Feliciana, LA
Built 1963 Load: 17.8 t ADT: 1,710
LA0959
FairOver: SANDY CREEK
4.0 Mi. E. of LA 958, East Feliciana, LA
Built 1957 Load: 17.8 t ADT: 1,679
LA0081
FairOver: W-11 LATERAL #2
1.97 M W of LA 77, Pointe Coupee, LA
Built 1969 Load: 17.8 t ADT: 231
LA0038
FairOver: CREEK
1.0 M W OF LA 450, Tangipahoa, LA
Built 1961 Load: 17.8 t ADT: 1,706
Weinberger Rd
FairOver: SELZERS CREEK
3.7 MI SE OF SR 22 E, Tangipahoa, LA
Built 1978 Load: 17.8 t ADT: 1,022
B. SEGNETTE ST PK
FairOver: MAIN CANAL
1.0MI. S. OF W.B. EXPWY., Jefferson, LA
Built 1992 Load: 18.1 t
N. Causeway BLVD
FairOver: LA SOUTHERN RR
0.6 MI N OF US 90, Jefferson, LA
Built 1957 Load: 18.1 t ADT: 7,806
Morrison Rd
FairOver: SAINT CHARLES CANAL
0.5MI.E.OF NEW CASTL, Orleans, LA
Built 1960 Load: 18.1 t
N BAYOU BLACK DR
FairOver: COULEE
0.9 MI SE OF DIANA ST., Terrebonne, LA
Built 1974 Load: 18.1 t ADT: 1,248
COUNTRY ESTATES DR
FairOver: ST LOUIS BAYOU
0.9 MI NORTH OF LA 660, Terrebonne, LA
Built 1967 Load: 18.1 t ADT: 7,175
LA0100
FairOver: BAYOU PLAQUEMINE BRULE
.58 MI WEST OF LA 13, Acadia, LA
Built 1949 Load: 18.1 t ADT: 4,120
LA1108
FairOver: CREEK
0.44 Mi S of LA 358, Acadia, LA
Built 1983 Load: 18.1 t ADT: 335
Henry Rd.
FairOver: Simmons Gully
3.2 Mi W. of La 13, Acadia, LA
Built 1976 Load: 18.1 t ADT: 288
Brahma Rd.
FairOver: GRAND LOUIS BAYOU
0.7 Mi. E. of Debaillion, Evangeline, LA
Built 1994 Load: 18.1 t ADT: 21
LA0085
FairOver: DELAHOUSSAYE CANAL
1.1 MI WEST OF LA 182, Iberia, LA
Built 1969 Load: 18.1 t ADT: 3,125
E. Peck Rd.
FairOver: ANSELM COULEE
.4 Mi E of Kalist Saloom, Lafayette, LA
Built 1989 Load: 18.1 t ADT: 607
Jack St.
FairOver: COULEE
0.1 Mi E of LA 182, Lafayette, LA
Built 1949 Load: 18.1 t ADT: 200
Jessie B. Rd
FairOver: Bayou Mallet
0.7 Mi. S. of US 190, St. Landry, LA
Built 1986 Load: 18.1 t ADT: 100
Old US 190
FairOver: DRAINAGE BAYOU
0.2 Mi E of LA 3174, St. Landry, LA
Built 1930 Load: 18.1 t ADT: 270
Old US 190
FairOver: HALF MOON BAYOU
1.1 Mi. W. of LA 3174, St. Landry, LA
Built 1930 Load: 18.1 t ADT: 270
Common St.
FairOver: BAYOU TESSON
0.2 Mi E of LA 749, St. Landry, LA
Built 1965 Load: 18.1 t ADT: 250
LA0345
FairOver: Coulee DU Portage
2.7 MI SOUTH OF LA 96, St. Martin, LA
Built 1962 Load: 18.1 t ADT: 1,319
LA0345
FairOver: Point Claire Coulee
2.4 MI SOUTH OF LA 96, St. Martin, LA
Built 1962 Load: 18.1 t ADT: 1,319
CYPRESS ISLAND RD
FairOver: CREEK
1.3 MI SW of LA 31, St. Martin, LA
Built 1962 Load: 18.1 t ADT: 1,584
McVeigh Rd
FairOver: Pont Brule Bayou
3.1 Mi. W of LA 31, St. Martin, LA
Built 1975 Load: 18.1 t ADT: 36
LA0335
FairOver: SLEDGE CANAL
2.11 MI E. OF LA 3093, Vermilion, LA
Built 1967 Load: 18.1 t ADT: 284
Foster Arbor Rd
FairOver: TOPY CREEK
3.0 MI. WEST OF LA 1, Bienville, LA
Built 1975 Load: 18.1 t ADT: 100
I0020
FairOver: I-20 RAMP W-N OVER I-20
I-220 RAMPS OVER I-20, Caddo, LA
Built 1985 Load: 18.1 t ADT: 87,567
W. 74th ST
FairOver: 71ST STREET DITCH
0.9 MI S OF HWY 511, Caddo, LA
Built 1963 Load: 18.1 t ADT: 50
US0084
FairOver: FOURMILE BAYOU
2.7 MI EAST OF LA 175, De Soto, LA
Built 1953 Load: 18.1 t ADT: 5,051
US0084
FairOver: BAYOU
.7 MI EAST OF LA 522, De Soto, LA
Built 1953 Load: 18.1 t ADT: 5,350
US0084
FairOver: CLIFTON BAYOU
1.5 MI EAST OF LA 522, De Soto, LA
Built 1953 Load: 18.1 t ADT: 5,350
Dorcheat Rd
FairOver: COW CREEK
11.0M NORTH OF US 79-80, Webster, LA
Built 1992 Load: 18.1 t ADT: 288
Showing 601-650 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.