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
LA0821
FairOver: CREEK
2.32 MI EAST OF LA 33, Lincoln, LA
Built 1983 Load: 39.0 t ADT: 1,072
LA0577
FairOver: DRAINAGE CANAL
4.9 MI NORTH OF LA 577, Madison, LA
Built 1972 Load: 39.0 t ADT: 125
LA0599
FairOver: BONNE IDEE
.51 MI EAST OF US 165, Morehouse, LA
Built 1979 Load: 39.0 t ADT: 268
LA0599
FairOver: BAYOU GALION
5.4 MI SOUTH OF LA 1.40, Morehouse, LA
Built 1978 Load: 39.0 t ADT: 268
LA0591
FairOver: BAYOU BARTHOLOMEW
2.31 MI NORTH OF LA 140, Morehouse, LA
Built 1976 Load: 39.0 t ADT: 137
LA0591
FairOver: CREEK
5.11 MI NORTH OF LA 140, Morehouse, LA
Built 1980 Load: 39.0 t ADT: 137
LA0591
FairOver: CREEK
8.63 MI NORTH OF LA 140, Morehouse, LA
Built 1980 Load: 39.0 t ADT: 137
US0165
FairOver: US 165-B & M P RR @ RILL
.28 MI NORTH OF US 165 BU, Ouachita, LA
Built 1963 Load: 39.0 t ADT: 17,565
US0165
FairOver: US 80
US 165 OVER US 80, Ouachita, LA
Built 1980 Load: 39.0 t ADT: 29,759
US0165
FairOver: BAYOU DESIARD
1.25 MI NORTH OF US 80, Ouachita, LA
Built 1976 Load: 39.0 t ADT: 29,759
LA0151
FairOver: CREEK
2.0 MI NORTH OF SOUTH INT, Ouachita, LA
Built 1970 Load: 39.0 t ADT: 2,862
LA0841
FairOver: HALFWAY BAYOU
1.8 MI NORTH OF US 165, Ouachita, LA
Built 1975 Load: 39.0 t ADT: 2,060
LA0841
FairOver: PRAIRIE BAYOU
3.8 MI NORTH OF US 165, Ouachita, LA
Built 1975 Load: 39.0 t ADT: 2,060
LA0133
FairOver: STEEP BAYOU
6.57 MI NORTH OF LA 15, Richland, LA
Built 1970 Load: 39.0 t ADT: 867
LA0595
FairOver: CREW LAKE
.55 MI NORTH OF US 80, Richland, LA
Built 1978 Load: 39.0 t ADT: 1,746
LA0854
FairOver: HURRICANE BAYOU
.4 MI EAST OF LA 183, Richland, LA
Built 1980 Load: 39.0 t ADT: 529
LA0584
FairOver: DRAINAGE CANAL
3.7 MI EAST OF LA 135, Richland, LA
Built 1979 Load: 39.0 t ADT: 77
LA0002
FairOver: BAYOU DELOUTRE
2.0 MI EAST OF LA 143, Union, LA
Built 1976 Load: 39.0 t ADT: 6,258
LA0348
FairOver: MERIDIAN CREEK
.9 MI EAST OF LA 549, Union, LA
Built 1973 Load: 39.0 t ADT: 314
LA0348
FairOver: BIG CANE CREEK
5.6 MI EAST OF LA 549, Union, LA
Built 1973 Load: 39.0 t ADT: 314
LA0348
FairOver: BIG CANE RELIEF
5.7 MI EAST OF LA 549, Union, LA
Built 1973 Load: 39.0 t ADT: 314
LA0828
FairOver: CANE CREEK
1.8 MI EAST OF LA 33, Union, LA
Built 1976 Load: 39.0 t ADT: 2,369
LA0878
FairOver: LITTLE COLEWA BAYOU
.26 MI WEST OF LA 2, West Carroll, LA
Built 1980 Load: 39.0 t ADT: 565
LA0585
FairOver: BAYOU
.6 MI EAST OF LA 17, West Carroll, LA
Built 1977 Load: 39.0 t ADT: 372
LA0585
FairOver: DEEP GULLEY
1.8 MI E OF LA 880, West Carroll, LA
Built 1977 Load: 39.0 t ADT: 372
LA0879
FairOver: BIG COLEWA BAYOU
2.77 MI EAST OF LA 585, West Carroll, LA
Built 1978 Load: 39.0 t ADT: 519
LA0879
FairOver: CREEK
2.95 MI EAST OF LA 585, West Carroll, LA
Built 1978 Load: 39.0 t ADT: 519
LA0879
FairOver: CREEK
4.1 MI EAST OF LA 585, West Carroll, LA
Built 1978 Load: 39.0 t ADT: 818
LA0879
FairOver: LITTLE COLEWA BAYOU
5.0 MI EAST OF LA 585, West Carroll, LA
Built 1978 Load: 39.0 t ADT: 1,129
LA0586
FairOver: PINE BAYOU
3.5 MI EAST OF LA 583, West Carroll, LA
Built 1975 Load: 39.0 t ADT: 242
LA0586
FairOver: COLEMAN BAYOU
6.1 MI EAST OF LA 583, West Carroll, LA
Built 1975 Load: 39.0 t ADT: 580
LA0012
FairOver: COW PEN CREEK
8.03 MI. E OF E INT LA27, Beauregard, LA
Built 1993 Load: 39.0 t ADT: 4,041
DON PLUSH RD
FairOver: TROUT CREEK
1.3 MI N of US 190, Beauregard, LA
Built 2006 Load: 39.0 t ADT: 360
US0171
FairOver: UPRR
.1 MI NORTH OF US 90, Calcasieu, LA
Built 1972 Load: 39.0 t ADT: 18,040
LA0383
FairOver: DRAIN
0.8 MI N of US 90, Calcasieu, LA
Built 1985 Load: 39.0 t ADT: 677
WEEKLY RD. (LA 27)
FairOver: BAYOU DINDE
.23 MI NORTH OF I-10, Calcasieu, LA
Built 1987 Load: 39.0 t ADT: 1,950
LA0524
FairOver: JESSE BRANCH
2.0 MI WEST OF US 165, Grant, LA
Built 1985 Load: 39.0 t ADT: 14
I0049
FairOver: KISATCHIE BAYOU
7.29 MI. NORTH OF LA 119, Natchitoches, LA
Built 1988 Load: 39.0 t ADT: 18,305
I0049
FairOver: KISATCHIE BAYOU
7.29 MI. NORTH OF LA 119, Natchitoches, LA
Built 1988 Load: 39.0 t ADT: 28,142
LA0494
FairOver: CANE RIVER
1.78 MI. N OF INT LA119, Natchitoches, LA
Built 1974 Load: 39.0 t ADT: 18,361
US0167
FairOver: LA 28
US 167 / LA 28 INTG., Rapides, LA
Built 1966 Load: 39.0 t ADT: 35,040
US0167
FairOver: LA 28
US 167 / LA INTG., Rapides, LA
Built 1966 Load: 39.0 t ADT: 27,628
LA0488
FairOver: SPRING CREEK
.78 MI. E OF LA1199, Rapides, LA
Built 1958 Load: 39.0 t ADT: 2,343
LA0006
FairOver: TOLEDO BEND RES.
3.45 MI WEST OF LA 191, Sabine, LA
Built 1967 Load: 39.0 t ADT: 3,030
LA0118
FairOver: LYLES CREEK
16.04 MI. EAST OF US 171, Sabine, LA
Built 1982 Load: 39.0 t ADT: 1,471
US0167
FairOver: PORT DELUCE CREEK RELIEF
0.11 MI. SOUTH OF LA 501, Winn, LA
Built 1991 Load: 39.0 t ADT: 10,307
LA0499
FairOver: FLAT CREEK RELIEF
0.88 MI. NTH. JCT. LA126, Winn, LA
Built 1996 Load: 39.0 t ADT: 114
LA0126
FairOver: DRAIN
6.1 MI SOUTH OF LA 849, Caldwell, LA
Built 1984 Load: 39.0 t ADT: 117
LA0126
FairOver: HURRICANE CREEK
2.5 MI N OF LA 851, Caldwell, LA
Built 1982 Load: 39.0 t ADT: 1,092
LA0004
FairOver: LOST CREEK RELIEF
1.47 MI WEST OF LA 846, Caldwell, LA
Built 1976 Load: 39.0 t ADT: 311
Showing 4,851-4,900 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.