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
Lil California Rd
FairOver: DRAINAGE CANAL
1.39 M. E. OF END LA 1194, Avoyelles, LA
Built 1984 Load: 38.2 t ADT: 100
LA0028
FairOver: BAYOU BOEUF
4.38 M E OF E JCT. LA 121, Rapides, LA
Built 2005 Load: 38.2 t ADT: 9,482
LA0028
FairOver: BAYOU BOEUF
4.38 MI EAST OF LA 121, Rapides, LA
Built 2003 Load: 38.2 t ADT: 8,811
US0165
FairOver: LITTLE BLACK BAYOU
0.05 M N of LA 506, Caldwell, LA
Built 2004 Load: 38.2 t ADT: 13,633
Browns Village Rd
FairOver: BAYOU VINCENT BRIDGE
.1 MI N. JCT I-10 & US 11, St. Tammany, LA
Built 1986 Load: 38.2 t ADT: 4,561
Davis Landing Rd
FairOver: GUM BAYOU BRIDGE
0.2 MI EAST OF 1090, St. Tammany, LA
Built 1986 Load: 38.2 t ADT: 1,392
LA1054
FairOver: SPRING CREEK
0.99 MILES EAST OF JCT US, Tangipahoa, LA
Built 2008 Load: 38.2 t ADT: 1,235
E. Bell Rd
FairOver: LITTLE CHAPIPEELA CREEK
4.0M SW OF JCT 16 & 445, Tangipahoa, LA
Built 1992 Load: 38.2 t ADT: 248
LA0726
FairOver: COULEE BEAU
0.01 MI EAST OF LA 182, Lafayette, LA
Built 2005 Load: 38.6 t ADT: 13,175
Carroll Creek Rd
FairOver: FORKED PINE BRANCH
2.6 MI. NORTH OF LA 155, Red River, LA
Built 1985 Load: 38.6 t ADT: 141
LA1268
FairOver: STAULKINGHEAD CREEK
1.4 MI. W. of US 165, Morehouse, LA
Built 1983 Load: 38.6 t ADT: 8,914
LA0114
FairOver: BAYOU DES CYPRAIRRES
1.45 MI N OF LA 1185, Avoyelles, LA
Built 1988 Load: 38.6 t ADT: 3,984
West River Rd
FairOver: PRAIRIE BRANCH
.8 MILE SOUTH JCT LA 113, Rapides, LA
Built 2005 Load: 38.6 t ADT: 115
Butter Cemetery Rd
FairOver: HURRICANE CREEK
2.6 MILES SE OF LA 497, Rapides, LA
Built 2005 Load: 38.6 t ADT: 250
LA0022
FairOver: BAYOU CONWAY
0.1 M NORTH I-10 & LA 22, Ascension, LA
Built 1990 Load: 38.6 t ADT: 11,127
W. Bayou Pkwy
FairOver: MINE COULEE CUT-OFF CANA
0.47M WEST OF LA 3025, Lafayette, LA
Built 1993 Load: 38.9 t ADT: 5,000
New Home Rd
FairOver: SUGAR CREEK
3.55 MI SW OF LA HWY 9, Claiborne, LA
Built 1990 Load: 38.9 t ADT: 140
New Home Rd
FairOver: FRANKS CREEK
3.7M WEST OF LA 9, Claiborne, LA
Built 1991 Load: 38.9 t ADT: 140
LA0004
FairOver: HALFWAY CREEK
1.7 MI WEST OF LA 811, Jackson, LA
Built 2005 Load: 38.9 t ADT: 2,987
LA0004
FairOver: BROWN CREEK
1.19 MI EAST OF LA 505, Jackson, LA
Built 2005 Load: 38.9 t ADT: 2,992
MILLARD HILL RD
FairOver: STOWE CREEK
4.9 MI EAST INT RT 278, Union, LA
Built 1987 Load: 38.9 t ADT: 138
Old Delhi Rd
FairOver: HURRICANE BAYOU
.5 MI.ESE. HWY. 17, West Carroll, LA
Built 1984 Load: 38.9 t ADT: 1,200
NIELSON RD
FairOver: SERPENT BAYOU
1.0 MI W of LA 99, Allen, LA
Built 2000 Load: 38.9 t ADT: 61
I0010
FairOver: CANAL NO. 3
6.8 MI EAST OF LA 49, Jefferson, LA
Built 1966 Load: 39.0 t ADT: 9,044
LA0307
FairOver: BAYOU ROND POMPON
14.5 MI NORTH OF LA 182, Lafourche, LA
Built 1976 Load: 39.0 t ADT: 2,271
LA3139
FairOver: JEFF/ORLEANS PARISH LINE
5.0 MI EAST OF LA 611-4, Orleans, LA
Built 1982 Load: 39.0 t ADT: 55,872
I0610
FairOver: ON RP FROM FRANKLIN AVE
.8 MI EAST OF LA 3071, Orleans, LA
Built 1969 Load: 39.0 t ADT: 7,620
I0010
FairOver: CITY STREETS
.36 MI EAST OF LA 39, Orleans, LA
Built 1968 Load: 39.0 t ADT: 7,620
I0010
FairOver: READ RD.
3.3 MI EAST OF US 90, Orleans, LA
Built 1973 Load: 39.0 t ADT: 12,699
LA0024
FairOver: BAYOU TERREBONNE
LA 24, Terrebonne, LA
Built 1975 Load: 39.0 t ADT: 322
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
0.02 MI. E of LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
02550650405259, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 258
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0092
FairOver: CANAL
3.30 MI E of LA 1124, Acadia, LA
Built 1975 Load: 39.0 t ADT: 1,274
LA0367
FairOver: BAYOU MALLET
2.87 MI NORTH OF LA 370, Acadia, LA
Built 1981 Load: 39.0 t ADT: 2,054
LA0758
FairOver: BAYOU
.4 MI EAST OF LA 29, Evangeline, LA
Built 1972 Load: 39.0 t ADT: 240
LA0758
FairOver: DOZA BAYOU
1.16 MI EAST OF LA 29, Evangeline, LA
Built 1972 Load: 39.0 t ADT: 240
LA0014
FairOver: POUFETTE CANAL
4.15 MI EAST OF LA 330, Iberia, LA
Built 1988 Load: 39.0 t ADT: 12,347
LA0014
FairOver: POUFETTE CANAL
2.6 Mi W of La 676, Iberia, LA
Built 1988 Load: 39.0 t ADT: 8,404
LA0092
FairOver: CREEK
0.7 MI WEST OF LA 733, Lafayette, LA
Built 1973 Load: 39.0 t ADT: 738
Ambassador Caffery
FairOver: I-10
1.0 miles North of US 90, Lafayette, LA
Built 1968 Load: 39.0 t ADT: 6,468
I0010
FairOver: FRANCOIS COULEE
1.1 Mi. East of I-49., Lafayette, LA
Built 1970 Load: 39.0 t ADT: 56,748
I0010
FairOver: FRANCOIS COULEE
5.4 Mi. West of LA 328, Lafayette, LA
Built 1970 Load: 39.0 t ADT: 5,698
LA3147
FairOver: DRAINAGE CANAL
3.84 MI S. OF LA 82, Vermilion, LA
Built 1982 Load: 39.0 t ADT: 221
LA0009
FairOver: LA 9 OVER I-20 @ ARCADIA
0.5 MI N. OF US 80, Bienville, LA
Built 1964 Load: 39.0 t ADT: 4,151
Showing 4,751-4,800 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.