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
LA0002
PoorOver: MIDDLEFORK BAYOU DARBONN
2.8 MI EAST OF LA 152, Claiborne, LA
Built 1949 Load: 28.1 t ADT: 990
LA0151
PoorOver: NORTH CHENIERE CR
5.21 MI NORTH OF LA 546, Ouachita, LA
Built 1958 Load: 28.1 t ADT: 2,828
LA3046
PoorOver: R/R CITY STREETS LA 611
.4 MI NORTH OF US 90, Jefferson, LA
Built 1957 Load: 28.2 t ADT: 55,994
LA0002
PoorOver: RED RIVER-MILLERS BLUFF
3.3 MI EAST OF US 71, Bossier, LA
Built 1955 Load: 28.2 t ADT: 2,059
LA0507
PoorOver: BRUSHY CREEK
1.0 MI NORTH OF LA 784, Red River, LA
Built 1979 Load: 28.2 t ADT: 517
US0165
PoorOver: DRAIN
2.5 MI NORTH OF LA 101, Jefferson Davis, LA
Built 1937 Load: 28.2 t ADT: 4,912
S. Flannery Rd
PoorOver: LIVELY BAYOU
440 Ft N of LA 426, East Baton Rouge, LA
Built 1965 Load: 28.3 t ADT: 12,710
US0165
PoorOver: CREEK
5.07 MI NORTH OF LA 2, Morehouse, LA
Built 1939 Load: 28.5 t ADT: 1,405
US0165
PoorOver: BAYOU GALION
1.5 MI NORTH OF SOUTH INT, Morehouse, LA
Built 1935 Load: 28.5 t ADT: 1,405
US0190
PoorOver: LA 415/M P RR @ LOBDELL
5.20 MI W OF US61, West Baton Rouge, LA
Built 1940 Load: 28.5 t ADT: 12,262
I0010
PoorOver: VET MEM HWY
1.9 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 28.8 t ADT: 41,695
US0090
PoorOver: NEW IBERIA SOUTHERN CANA
1.10 Mi W of LA 83, Iberia, LA
Built 1999 Load: 28.8 t ADT: 12,192
LA0168
PoorOver: NANCE BRANCH
6.38 MI E OF LA 1, Caddo, LA
Built 1983 Load: 28.8 t ADT: 625
LA0507
PoorOver: GRAND BAYOU RELIEF
1.84 MI NORTH OF US 71, Red River, LA
Built 1976 Load: 28.8 t ADT: 691
LA1208-1
PoorOver: HORSESHOE CANAL
3.0 MI. E OF US71, Rapides, LA
Built 1975 Load: 28.8 t ADT: 4,442
LA0015
PoorOver: OLD RIVER OVERBANK C.S.
75MI NW OF BATON ROUGE, Concordia, LA
Built 1959 Load: 28.8 t ADT: 602
E Lanoux Rd
PoorOver: NEW RIVER CANAL
0.2 M N of LA 429, Ascension, LA
Built 1994 Load: 28.8 t ADT: 25
Harry Savoy Rd
PoorOver: DRAINAGE BAYOU
.8 MI NE LA 431 LA 621, Ascension, LA
Built 1993 Load: 28.8 t ADT: 100
LA0010
PoorOver: DRAIN
0.5 MILES EAST OF LA 450, Washington, LA
Built 1990 Load: 28.8 t ADT: 1,478
Sittig St.
PoorOver: COULEE
0.28 MI. EAST OF LA 755, Acadia, LA
Built 1990 Load: 29.0 t ADT: 2,016
ORANGE ST
PoorOver: I-20
.4 MI EAST OF LA 594, Ouachita, LA
Built 1965 Load: 29.0 t ADT: 40,300
PAYTON RD
PoorOver: CREEK
0.4 MI E of GUILLORY RD, Jefferson Davis, LA
Built 1970 Load: 29.0 t ADT: 75
US0165
PoorOver: LA. & ARKANSAS RR
1.44 MI. N OF INT US71, Rapides, LA
Built 1997 Load: 29.0 t ADT: 20,902
LA0175
PoorOver: BAYOU SAN MIGUEL
2.18 M N OF N JCT. LA 120, Sabine, LA
Built 1950 Load: 29.0 t ADT: 1,587
LA0604
PoorOver: CREEK
5.66 MI NORTH OF LA 605, Tensas, LA
Built 1962 Load: 29.0 t ADT: 1,151
Bay St
PoorOver: NORTHDALE CANAL
0.1 MI W of LA 3164, East Baton Rouge, LA
Built 1960 Load: 29.0 t ADT: 2,397
Woodview Ln
PoorOver: DRAINAGE DITCH
.4 MILES FROM LA 413 ON W, Pointe Coupee, LA
Built 1970 Load: 29.0 t ADT: 136
US0090
PoorOver: BAYOU RAMOS
3.19 Mi E of LA 182, St. Mary, LA
Built 1994 Load: 29.2 t ADT: 7,885
US0090
PoorOver: BAYOU RAMOS
2.5 Mi W. of LA 662, St. Mary, LA
Built 1994 Load: 29.2 t ADT: 10,035
PRATER ROAD
PoorOver: RR I-10
0.9 MI S OF US 90, Calcasieu, LA
Built 1962 Load: 29.2 t ADT: 3,766
WALL BLVD
PoorOver: BAYOU FATMA
.80 MI.S. OF LAPALCO BLVD, Jefferson, LA
Built 1980 Load: 29.5 t ADT: 8,000
Joe Brown Memorial
PoorOver: LAGOON
0.2 MI. E. OF READ B, Orleans, LA
Built 1975 Load: 29.5 t
US0090
PoorOver: NEW IBERIA SOUTHERN CANA
1.3 MI E of LA 329, Iberia, LA
Built 1999 Load: 29.5 t ADT: 3,244
COTTONGIN CASTOR
PoorOver: CASTOR CREEK
3.6 MI NE OF LA 26, Allen, LA
Built 1982 Load: 29.5 t ADT: 131
LA3094
PoorOver: TWELVE MILE BAYOU
.9 MI NORTH OF LA 173, Caddo, LA
Built 1968 Load: 29.8 t ADT: 14,003
US0165
PoorOver: LITTLE RIVER
2.9 MI SOUTH OF US 84, LaSalle, LA
Built 1956 Load: 29.9 t ADT: 4,700
NELSON ROAD
PoorOver: CANAL
0.3 MI N of LA 1126, Jefferson Davis, LA
Built 1973 Load: 30.1 t ADT: 50
US0084
PoorOver: CANEY BAYOU
1.4 MI EAST OF LA 566, Concordia, LA
Built 1932 Load: 30.1 t ADT: 6,163
I0020
PoorOver: M.P. RR
.6 MI EAST OF US80, Caddo, LA
Built 1965 Load: 30.5 t ADT: 98,318
LA0594
PoorOver: LA 594 OVER I-20
0.68 MI NE OF LA 15, Ouachita, LA
Built 1965 Load: 30.5 t ADT: 12,786
FDR 337
PoorOver: MIDDLE CREEK
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1970 Load: 30.5 t ADT: 30
LA0524
PoorOver: ELEM BRANCH
.93 MI WEST OF US 165, Grant, LA
Built 1931 Load: 30.5 t ADT: 14
I0010
PoorOver: SERVICE RD & UPT R/R
3.13 MI EAST OF I-610, Orleans, LA
Built 1960 Load: 30.8 t ADT: 154,311
US0190
PoorOver: LITTLE TECHE BAYOU
0.07 Mi W of LA 743, St. Landry, LA
Built 1962 Load: 30.8 t ADT: 10,487
LA0014-B
PoorOver: VERMILION R/ABBEVILLE
0.1 MI W. OF US 167, Vermilion, LA
Built 1964 Load: 30.8 t ADT: 19,800
LA0151
PoorOver: LA 151 OVER I-20
LA 151 OVER I-20, Ouachita, LA
Built 1960 Load: 30.8 t ADT: 2,862
LA0182
PoorOver: BAYOU BEOUF
US0090, Assumption, LA
Built 1958 Load: 30.8 t ADT: 3,905
US0061
PoorOver: LA 73 NORTH
1.33 MI. SOUTH OF I-12, East Baton Rouge, LA
Built 1953 Load: 30.8 t ADT: 29,303
Holiday Dr
PoorOver: HOLIDAY DR(SB)OVER ALGIE
0.01 MI.W.OF DEGAULLE, Orleans, LA
Built 1958 Load: 31.1 t
I0020
PoorOver: CREEK
2.43 MI EAST OF LA 147, Lincoln, LA
Built 1963 Load: 31.1 t ADT: 50,895
Showing 12,501-12,550 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.