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
LA3062
FairOver: BEAVER BRANCH
0.25 MI West of US 79, Claiborne, LA
Built 1975 Load: 37.2 t ADT: 1,619
LA0518
FairOver: WALKER CREEK RELIEF
.53 MI EAST OF LA 9, Claiborne, LA
Built 1981 Load: 37.2 t ADT: 622
LA0518
FairOver: WALKER CREEK BRIDGE
.56 MI EAST OF LA 9, Claiborne, LA
Built 1981 Load: 37.2 t ADT: 622
LA0534
FairOver: BRANCH
1.0 MI SOUTH OF LA 2, Claiborne, LA
Built 1982 Load: 37.2 t ADT: 135
LA0534
FairOver: CREEK
2.5 MI NORTH OF LA 534-S, Claiborne, LA
Built 1971 Load: 37.2 t ADT: 118
LA0177
FairOver: I-49
LA 177 OVER I-49, De Soto, LA
Built 1989 Load: 37.2 t ADT: 2,878
LA3015
FairOver: DRAIN
1.89 MI EAST OF LA 5, De Soto, LA
Built 1972 Load: 37.2 t ADT: 1,157
LA3015
FairOver: BAYOU GRAND CANE
7.7 MI EAST OF LA 5, De Soto, LA
Built 1977 Load: 37.2 t ADT: 581
LA3015
FairOver: BAYOU GRAND CANE RELIEF
7.75 MI EAST OF LA 5, De Soto, LA
Built 1977 Load: 37.2 t ADT: 581
LA3015
FairOver: COOK CREEK
8.36 MI EAST OF LA 5, De Soto, LA
Built 1977 Load: 37.2 t ADT: 581
I0049
FairOver: I-49 OVER LA 175
2.41 MI. NORTH OF LA 5, De Soto, LA
Built 1986 Load: 37.2 t ADT: 28,142
US0071
FairOver: DRAIN
.18 MI NORTH OF US 84, Red River, LA
Built 1975 Load: 37.2 t ADT: 9,542
LA0164
FairOver: DORCHEAT BAYOU RELIEF
1.54 MI E OF US 371, Webster, LA
Built 1982 Load: 37.2 t ADT: 3,472
I0020
FairOver: KCS R/R
0.12M EAST OF LA 159, Webster, LA
Built 1960 Load: 37.2 t ADT: 32,869
JACK MARTIN RD
FairOver: I 20
3.86 MI E OF LA 7, Webster, LA
Built 1983 Load: 37.2 t ADT: 2,900
OLD HWY 882
FairOver: JOES BAYOU
3.92 MI WEST OF SOUTH INT, East Carroll, LA
Built 1975 Load: 37.2 t ADT: 110
LA0034
FairOver: CREEK
1.01 MI NORTH OF LA 4, Jackson, LA
Built 2002 Load: 37.2 t ADT: 2,974
LA0034
FairOver: DRY BRANCH
5.92 MI E of LA 4, Jackson, LA
Built 2002 Load: 37.2 t ADT: 2,877
LA0034
FairOver: DRY BRANCH
0.6 MI NORTH of LA 148, Jackson, LA
Built 2002 Load: 37.2 t ADT: 2,877
LA0034
FairOver: FLAT BRANCH
0.7 MI NORTH of LA 148, Jackson, LA
Built 2002 Load: 37.2 t ADT: 2,877
US0080
FairOver: CHOUDRANT CREEK
3.3 MI EAST OF LA 145, Lincoln, LA
Built 1948 Load: 37.2 t ADT: 3,275
LA0145
FairOver: CHOUDRANT CREEK RELIEF
.3 MI NORTH OF LA 556, Lincoln, LA
Built 1975 Load: 37.2 t ADT: 2,458
LA0544
FairOver: WALNUT CREEK
4.53 MI E of LA 151, Lincoln, LA
Built 1980 Load: 37.2 t ADT: 927
LA0544
FairOver: CREEK
4.64 MI EAST OF LA 151, Lincoln, LA
Built 1980 Load: 37.2 t ADT: 927
LA0151
FairOver: LITTLE DARBONNE CREEK
2.3 MI W UNION PARISH LN, Lincoln, LA
Built 1978 Load: 37.2 t ADT: 189
I0020
FairOver: OLD US 65; WALNUT BAYOU
.2 MI WEST OF US 65, Madison, LA
Built 1975 Load: 37.2 t ADT: 31,481
I0020
FairOver: OLD US 65; WALNUT BAYOU
.2 .1 MI EAST OF US 65, Madison, LA
Built 1975 Load: 37.2 t ADT: 31,481
LA0592
FairOver: BAYOU BARTHOLOMEW
3.75 MI WEST OF LA 830-1, Morehouse, LA
Built 1976 Load: 37.2 t ADT: 246
US0165-B
FairOver: DESIARD ST & ICG RR
.3 MI NORTH OF I-20, Ouachita, LA
Built 1971 Load: 37.2 t ADT: 4,400
US0165
FairOver: BAYOU MOUCHOIR
.88 MI NORTH OF US 165 BU, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 29,759
US0165
FairOver: BAYOU MOUCHOIR
.88 MI NORTH OF US 165 BU, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 17,565
US0165
FairOver: BAYOU MOUCHOIR
1.06 MI NORTH OF US 165 B, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 29,759
US0165
FairOver: BAYOU MOUCHOIR
1.06 MI NORTH OF US 165 B, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 17,565
US0165
FairOver: PINE BAYOU
3.65 MI NORTH OF US 165 B, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 29,759
US0165
FairOver: PINE BAYOU
3.65 MI NORTH OF US 165 B, Ouachita, LA
Built 1963 Load: 37.2 t ADT: 17,565
LA0137
FairOver: BOEUF RIVER
2.2 MI NORTH OF US 80, Richland, LA
Built 1971 Load: 37.2 t ADT: 1,954
LA0132
FairOver: KELLY BAYOU
1.9 MI EAST OF LA 135, Richland, LA
Built 1972 Load: 37.2 t ADT: 1,913
LA0132
FairOver: CANEY BAYOU
3.0 MI EAST OF LA 135, Richland, LA
Built 1972 Load: 37.2 t ADT: 1,913
LA0583
FairOver: CREEK
4.2 MI NORTH OF LA 852, Richland, LA
Built 1979 Load: 37.2 t ADT: 1,108
LA0026
FairOver: OUISKA CHITTO CK.
4.22 MI. E OF INT LA377, Allen, LA
Built 1975 Load: 37.2 t ADT: 2,151
LA1152
FairOver: CREEK
0.7 MI W OF US 165, Allen, LA
Built 1970 Load: 37.2 t ADT: 511
LA0012
FairOver: BECKWITH CREEK
4.2 MI E of LA 27, Beauregard, LA
Built 1961 Load: 37.2 t ADT: 4,041
LA0012
FairOver: HICKORY BRANCH
3.2 MI W of US 171, Beauregard, LA
Built 1993 Load: 37.2 t ADT: 3,530
LA0394
FairOver: CREEK
8.77 MI. E OF US171, Beauregard, LA
Built 1973 Load: 37.2 t ADT: 490
LA0110
FairOver: CREEK
1.8 MI W OIF US 171, Beauregard, LA
Built 1948 Load: 37.2 t ADT: 2,079
LA3059
FairOver: BURT BAYOU
4.8 MI E of US 171, Calcasieu, LA
Built 1976 Load: 37.2 t ADT: 2,383
I0010
FairOver: HAMPTONS COULEE
0.08 MI N OF I-10 WB, Calcasieu, LA
Built 1966 Load: 37.2 t ADT: 3,799
I0010
FairOver: WEST LACASSINE BAYOU
1.1 MI E of LA 101, Jefferson Davis, LA
Built 1964 Load: 37.2 t ADT: 838
I0010
FairOver: W. LACASSINE BAYOU
5.5 MI W OF LA 99, Jefferson Davis, LA
Built 1964 Load: 37.2 t ADT: 11,635
I0010
FairOver: E. LACASSINE BAYOU
5.9 MI E of LA 101, Jefferson Davis, LA
Built 1964 Load: 37.2 t ADT: 838
Showing 4,451-4,500 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.