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
FLAMINGO BLVD
FairOver: CREEK
0.02 SE of LA 70, St. Mary, LA
Built 1981 Load: 28.5 t ADT: 700
LA0507
FairOver: CREEK
2.0 MI NORTH OF LA 784, Red River, LA
Built 1976 Load: 28.5 t ADT: 517
SWEETWATER RD
FairOver: DRAIN TO CYPRESS BAYOU
1.6 MI. SW. INT. 336, Jackson, LA
Built 1985 Load: 28.5 t ADT: 380
I0020
FairOver: US165 NB RAMP FROM I20 W
I-20/US 165 INTERCHANGE, Ouachita, LA
Built 1966 Load: 28.5 t ADT: 15,642
ANTIOCH CHURCH RD
FairOver: SOUTH CHENIERE CR
0.5 MI SOUTH of LA 34, Ouachita, LA
Built 1982 Load: 28.5 t ADT: 344
FRAGALA ST
FairOver: LITTLE CREEK
0.4 MI W of US 425, Richland, LA
Built 1991 Load: 28.5 t ADT: 570
CARLYSS DR
FairOver: DRAIN
0.8 MI W of LA 1256, Calcasieu, LA
Built 2000 Load: 28.5 t ADT: 1,560
JEFFERSON HWY
FairOver: CREEK
0.46 MI. N.OF US 165B, Rapides, LA
Built 1983 Load: 28.5 t ADT: 1,422
LA0431
FairOver: SNELLS CANAL
0.17 MI. N. OF LA 621, Ascension, LA
Built 1997 Load: 28.5 t ADT: 9,608
Rondinaud Ln
FairOver: BAYOU LAFOURCHE
DONALDSONVILLE, Ascension, LA
Built 1970 Load: 28.5 t ADT: 150
LA0402
FairOver: BAYOU LAFOURCHE @ MUNSON
LA0402, Assumption, LA
Built 1976 Load: 28.5 t ADT: 551
Jack Torres Rd
FairOver: BAYOU CHOLPE TRIBUTARY
1.3 M SW Of US 190, Pointe Coupee, LA
Built 1986 Load: 28.5 t ADT: 657
Bains Rd
FairOver: LITTLE DRY BRANCH
1.2 MI E LA 66 US 61 JCT, West Feliciana, LA
Built 1996 Load: 28.5 t ADT: 80
SEGNETTE BLVD
FairOver: MAIN CANAL
0.7 MI S. OF U.S. 90 BUS., Jefferson, LA
Built 1986 Load: 28.8 t
Bowie Rd
FairOver: COULEE
0065 LOG MI FROM INT, Lafourche, LA
Built 1972 Load: 28.8 t ADT: 4,080
Wall BLVD
FairOver: MAGELLEN CANAL
1.0 MILE NORTH OF LA 428, Orleans, LA
Built 1979 Load: 28.8 t
Wall BLVD
FairOver: MAGELLEN CANAL
1.0 MILE NORTH OF LA 428, Orleans, LA
Built 1979 Load: 28.8 t
US0090
FairOver: SP. RR. & CITY STRS.
.6 MI SOUTH OF MISS. RIVE, Orleans, LA
Built 1988 Load: 28.8 t ADT: 154,311
Earhart to S Broad
FairOver: CITY STREET
2.0 MI S OF TULANE AVENUE, Orleans, LA
Built 1951 Load: 28.8 t
Shrimpers Rowe
FairOver: CANAL
1.0 M N OF FALGOUT CA RD, Terrebonne, LA
Built 1991 Load: 28.8 t ADT: 517
Pine Ave.
FairOver: BAYOU TESSON
0.1 Mi East of LA 749, St. Landry, LA
Built 1965 Load: 28.8 t ADT: 450
US0090
FairOver: US 90 OVER LA 3211
US 90 WB over LA 3211, St. Mary, LA
Built 2001 Load: 28.8 t ADT: 10,063
JOHNSON ST
FairOver: SAN PATRICIO BAYOU
0.5 MI EAST OF LA 513, De Soto, LA
Built 1986 Load: 28.8 t ADT: 710
Jim Island Rd
FairOver: BAYOU PIERE
1.0 MI NW OF LA 174, Red River, LA
Built 1992 Load: 28.8 t ADT: 120
NORTHSTAR LANE
FairOver: DRAIN TO CANEY LAKE
0.7 MI SW of LA 810, Jackson, LA
Built 1985 Load: 28.8 t ADT: 175
MADELINE ST
FairOver: LITTLE CREEK
LOGMI 0.24 FR 4 TO 5, Richland, LA
Built 1984 Load: 28.8 t ADT: 250
US0190
FairOver: CLEAR CREEK
0.8 MI E OF LA389, Beauregard, LA
Built 1968 Load: 28.8 t ADT: 3,666
SIDNEY DEROUEN RD
FairOver: BELL CITY DRAINAGE CANAL
1.0 MI. E. OF HARRIS ROAD, Calcasieu, LA
Built 1999 Load: 28.8 t ADT: 295
FDR 337
FairOver: KISATCHIE BAYOU
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1970 Load: 28.8 t ADT: 30
LA0562
FairOver: BRUSHEY BAYOU
2.80 M S of LA 875, Franklin, LA
Built 1981 Load: 28.8 t ADT: 2,036
US0165
FairOver: CREEK
1.90 M S of US 84, LaSalle, LA
Built 2009 Load: 28.8 t ADT: 3,518
US0090
FairOver: BAYOU BOEUF BR EXTENSION
JCT of US 90 & LA 662, Assumption, LA
Built 1998 Load: 28.8 t ADT: 10,035
US0061
FairOver: US 61 OVER LA 964 @ ALSE
JCT of US 61 & LA 964, East Baton Rouge, LA
Built 1961 Load: 28.8 t ADT: 16,910
LA3125
FairOver: BAYOU DES ACADIENS
LA 3125 ST JAMES PAR, St. James, LA
Built 1980 Load: 28.8 t ADT: 10,807
LA0642
FairOver: MARVIN CANAL
0.6 M W of LA 3125, St. James, LA
Built 1979 Load: 28.8 t ADT: 410
US0061
FairOver: ALEXANDER CREEK
0.2 M E OF LA 3057, West Feliciana, LA
Built 2011 Load: 28.8 t ADT: 16,169
TALLOW CREEK BLVD
FairOver: SOAP AND TALLOW BRANCH
.20 MI N OF OLD LA 1085, St. Tammany, LA
Built 2003 Load: 28.8 t ADT: 300
I0012
FairOver: I-12 OVER LA 21
2.2 M E OF LA 1077, St. Tammany, LA
Built 1975 Load: 28.8 t ADT: 79,164
Spartan Dr
FairOver: CANAL
0.21 M EAST OF US 11, St. Tammany, LA
Built 1990 Load: 28.8 t ADT: 4,073
I0055
FairOver: BEAVER CREEK
I0055, Tangipahoa, LA
Built 1966 Load: 28.8 t ADT: 17,665
US0090
FairOver: DRAIN CANAL
2.8 MI WEST OF US 90B, Jefferson, LA
Built 1940 Load: 29.0 t ADT: 28,780
US0090
FairOver: CITY STS I10 RAMPS US9
.91 MI SOUTH OF I-10, Orleans, LA
Built 1994 Load: 29.0 t ADT: 3,803
US0090
FairOver: SELLERS CANAL
5.6 MI EAST OF LA 633, St. Charles, LA
Built 1940 Load: 29.0 t ADT: 25,051
I0310
FairOver: US 61/RR/SWAMP/LA 626
0.41 M SOUTH OF I-10, St. Charles, LA
Built 1992 Load: 29.0 t ADT: 20,850
I0310
FairOver: RAMPS/US 61
0.2 1M NORTH OF US 61, St. Charles, LA
Built 1992 Load: 29.0 t ADT: 15,642
I0310
FairOver: RAMPS/RR/CANAL/US 61
0.25 M SOUTH OF US 61, St. Charles, LA
Built 1992 Load: 29.0 t ADT: 15,642
I0310
FairOver: RAMPS/RR/CANAL/US 61
0.10 M NORTH OF US 61, St. Charles, LA
Built 1992 Load: 29.0 t ADT: 15,642
LA0315
FairOver: BAYOU DULARGE
.01 MI NORTH OF LA 661, Terrebonne, LA
Built 1977 Load: 29.0 t ADT: 12,596
LA0106
FairOver: BAYOU NEZPIQUE
2.11 MI EAST OF LA 13, Evangeline, LA
Built 1964 Load: 29.0 t ADT: 1,294
LA0095
FairOver: BAYOU MARROW
6.69 MI EAST OF LA 104, Evangeline, LA
Built 1965 Load: 29.0 t ADT: 1,107
Showing 2,501-2,550 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.