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
BROADMORE ROAD
PoorOver: BROADMORE BAYOU
1.5 MI N of LA 380, Jefferson Davis, LA
Built 1976 Load: 18.5 t ADT: 160
GUIDRY RD.
PoorOver: BROADMORE DITCH
0.08 MI W of BROADMORE RD, Jefferson Davis, LA
Built 1973 Load: 18.5 t ADT: 100
NEW COMER RD.
PoorOver: GULLY
1.2 MI E of LA 383, Jefferson Davis, LA
Built 1971 Load: 18.5 t ADT: 40
FH 59
PoorOver: DOUBLE BRANCH
NO DATA ENTERED, Natchitoches, LA
Built 1969 Load: 18.5 t ADT: 80
LA0409
PoorOver: SANDY CREEK
6.7 MI. N of LA 64, East Baton Rouge, LA
Built 1979 Load: 18.5 t ADT: 3,092
S Campus Dr
PoorOver: CORPORATION CANAL
L.S.U CAMPUS, East Baton Rouge, LA
Built 1955 Load: 18.5 t
Gurney Rd
PoorOver: DRAINAGE BAYOU
0.8 Mi E of LA 410, East Baton Rouge, LA
Built 1966 Load: 18.5 t ADT: 4,025
Daniels St
PoorOver: BRUSHY BAYOU
0.6 M E OF LA 19, East Baton Rouge, LA
Built 1967 Load: 18.5 t ADT: 500
McCullough Rd
PoorOver: DRAINAGE BAYOU
1.6 Mi E of LA 410, East Baton Rouge, LA
Built 1967 Load: 18.5 t ADT: 1,028
Hubbs Rd
PoorOver: HUB BAYOU
0.1 MI. S. of LA 64, East Baton Rouge, LA
Built 1968 Load: 18.5 t ADT: 1,386
Lorio Dairy Rd
PoorOver: BAYOU SERE
1.3 MI NE JCT US 190, Pointe Coupee, LA
Built 1970 Load: 18.5 t ADT: 210
Up Cheerful Val Rd
PoorOver: Gales Cr
0.5 Mi N of sligo Rd, West Feliciana, LA
Built 1970 Load: 18.5 t ADT: 32
LA0036
PoorOver: ABITA RIVER
0.1 M E OF LA 59, St. Tammany, LA
Built 1957 Load: 18.5 t ADT: 1,844
LA0157
PoorOver: BODCAU BAYOU RELIEF
3.67 MI NORTH OF LA 528, Bossier, LA
Built 1980 Load: 18.8 t ADT: 846
I0020
PoorOver: I-20 RAMP W-N I-20 MKT S
I-20 RAMP TO LA 1, Caddo, LA
Built 1985 Load: 18.8 t ADT: 87,567
US0080
PoorOver: DORCHEAT RELIEF
.5 MI EAST OF US 371, Webster, LA
Built 1954 Load: 18.8 t ADT: 9,109
LA0159
PoorOver: KCS RR MINDEN
1.5 MI S OF US80, Webster, LA
Built 1935 Load: 18.8 t ADT: 6,459
LA0110
PoorOver: DRAIN
1.2 MI S of US 190, Beauregard, LA
Built 1968 Load: 18.8 t ADT: 1,947
LA0027
PoorOver: ICWW - ELLENDERS
5.9 MI S OF LA 108, Calcasieu, LA
Built 1977 Load: 18.8 t ADT: 6,981
FH 59
PoorOver: STEEP CREEK
NO DATA ENTERED, Natchitoches, LA
Built 1967 Load: 18.8 t ADT: 80
Beco Rd
PoorOver: DUCK ROOST BAYOU
0.1 M N Of LA 429, Ascension, LA
Built 1994 Load: 18.8 t ADT: 500
LA0037
PoorOver: HUBS BAYOU
0.8 M S of LA 409, East Baton Rouge, LA
Built 1972 Load: 18.8 t ADT: 9,104
Port Hudson-Pride
PoorOver: REDWOOD CREEK
2.2 MI.N-LA 64 LA 67, East Baton Rouge, LA
Built 1963 Load: 18.8 t ADT: 2,562
Pride-Baywood Rd
PoorOver: WHITTEN CREEK
6.6 MI. E. of LA 409, East Baton Rouge, LA
Built 1965 Load: 18.8 t ADT: 451
Callegan Rd
PoorOver: DRAINAGE BAYOU
3.7 MI.SW OF WHITE C, Iberville, LA
Built 1970 Load: 18.8 t ADT: 160
Sid Richardson Rd
PoorOver: BAYOU BOURBEAUX
1.75 MI. SW. OF ADDI, West Baton Rouge, LA
Built 1970 Load: 18.8 t ADT: 230
Clearwater Dr
PoorOver: MILLERS CANAL
0.55 MI S OF I12 ON LA 16, Livingston, LA
Built 1978 Load: 18.8 t ADT: 500
I0010
PoorOver: I-10 WEST TO US 61
1.86 MI EAST OF I-610, Orleans, LA
Built 1961 Load: 19.1 t ADT: 7,620
De Saix BLVD
PoorOver: BAYOU SAINT JOHN
0.0MI.E.OF WISNER BL, Orleans, LA
Built 1941 Load: 19.1 t
Read BLVD
PoorOver: MORRISON CANAL
1.0MI.N.OF I-10, Orleans, LA
Built 1960 Load: 19.1 t
LA0350
PoorOver: BAYOU TECHE PARKS
0.36 Mi NE of LA 31, St. Martin, LA
Built 1950 Load: 19.1 t ADT: 3,378
I0020
PoorOver: I-20/KCS RR
0.01 MI N OF US 71, Bossier, LA
Built 1966 Load: 19.1 t ADT: 6,786
LA0789
PoorOver: CYPRESS BAYOU
2.0 MI SOUTH OF LA 169, Caddo, LA
Built 1975 Load: 19.1 t ADT: 1,504
US0080
PoorOver: CREEK
1.91 MI EAST OF LA 159, Webster, LA
Built 1954 Load: 19.1 t ADT: 3,955
LA3008
PoorOver: CANEY CREEK
1.1 MI SOUTH OF LA 160, Webster, LA
Built 1971 Load: 19.1 t ADT: 145
LA0155
PoorOver: CREEK
4.6 MI EAST OF LA 542, Jackson, LA
Built 1960 Load: 19.1 t ADT: 351
LA0822
PoorOver: CYPRESS BAYOU
3.35 MI EAST OF US 167, Lincoln, LA
Built 1953 Load: 19.1 t ADT: 1,568
Bonne Idee RD
PoorOver: BAYOU BONNE IDEE
0.3 Mi. E. of US 165, Morehouse, LA
Built 1979 Load: 19.1 t ADT: 200
LOVELADY RD
PoorOver: LONGS CREEK
3 MI NW LUNA FIRETOW, Ouachita, LA
Built 1965 Load: 19.1 t ADT: 23
N GRAND AVE
PoorOver: BUXTON CREEK
0.4 MI NORTH OF LA 12, Calcasieu, LA
Built 1997 Load: 19.1 t ADT: 273
FDR 145
PoorOver: HURRICANE
NO DATA ENTERED, Grant, LA
Built 1970 Load: 19.1 t ADT: 13
FDR 911
PoorOver: MIDDLE FORK DARBONE
2.1 MI SOUTH OF LA. ALT 2, Claiborne, LA
Built 1986 Load: 19.1 t ADT: 30
US0071
PoorOver: CHEVREUILLE B.
1.7 MI. N OF INT LA477, Natchitoches, LA
Built 1956 Load: 19.1 t ADT: 1,691
LA0001
PoorOver: CANE RIVER
.05 MI. N OF S INT LA495, Natchitoches, LA
Built 1948 Load: 19.1 t ADT: 996
LA0117
PoorOver: ST. JOHNS CREEK
0.58 MI. SOUTH OF LA 6, Natchitoches, LA
Built 1977 Load: 19.1 t ADT: 3,420
LA0121
PoorOver: CALCASIEU RIVER TRIBUTAR
0.52 MI. SW OF LA 461, Rapides, LA
Built 1973 Load: 19.1 t ADT: 1,932
LA0456
PoorOver: BAYOU LAMOURIE
0.01 MI. EAST OF LA 470, Rapides, LA
Built 1950 Load: 19.1 t ADT: 1,009
LA1204
PoorOver: FLAGON BAYOU
1.38 MI. E OF LA3225, Rapides, LA
Built 1973 Load: 19.1 t ADT: 2,440
LA0126
PoorOver: MILL CREEK
.7 MI WEST OF LA 1233, Winn, LA
Built 1941 Load: 19.1 t ADT: 310
LA0506
PoorOver: CASTOR RELIEF
6.5 MI WEST OF US 165, Caldwell, LA
Built 1931 Load: 19.1 t ADT: 306
Showing 12,101-12,150 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.