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
LA0164
FairOver: CREEK
.5 MI SOUTH OF LA 3227, Bossier, LA
Built 1943 Load: 32.4 t ADT: 3,472
I0020
FairOver: DRAIN
.4 MI EAST OVER LA 72, Bossier, LA
Built 1967 Load: 32.4 t ADT: 69,892
I0020
FairOver: DRAIN
10.0 MI EAST OF LA 782-2, Bossier, LA
Built 1975 Load: 32.4 t ADT: 25,379
I0220
FairOver: BAYOU
.7 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 32.4 t ADT: 35,972
I0220
FairOver: BAYOU
.7 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 32.4 t ADT: 35,972
Camp Zion Rd
FairOver: Clarke Bayou
2.5 MI EAST OF LA 157, Bossier, LA
Built 1985 Load: 32.4 t ADT: 500
West Jackson Ave
FairOver: Foxskin Bayou
0.3 MI EAST OF LA 157, Bossier, LA
Built 1985 Load: 32.4 t ADT: 500
US0071
FairOver: DOOLEY BAYOU
.55 MI NORTH OF LA 530, Caddo, LA
Built 1955 Load: 32.4 t ADT: 472
US0071
FairOver: RED BAYOU
.13 MI NORTH OF LA 170, Caddo, LA
Built 1955 Load: 32.4 t ADT: 460
US0171
FairOver: DRAIN
0.1 MI N OF LA 525, Caddo, LA
Built 1953 Load: 32.4 t ADT: 26,330
LA0001
FairOver: CREEK
0.2 MI SOUTH OF LA 538, Caddo, LA
Built 1940 Load: 32.4 t ADT: 4,492
LA0001
FairOver: DRAIN
1.5 MI NORTH OF LA 175, Caddo, LA
Built 1956 Load: 32.4 t ADT: 3,664
LA0001
FairOver: DRAIN
2.15 MI NORTH OF LA 523, Caddo, LA
Built 1968 Load: 32.4 t ADT: 16,955
LA0001
FairOver: DRAIN
.3 MI NORTH OF LA 526, Caddo, LA
Built 1968 Load: 32.4 t ADT: 16,955
LA0001
FairOver: DRAIN
.5 MI NORTH OF LA 511, Caddo, LA
Built 1956 Load: 32.4 t ADT: 24,739
LA0002
FairOver: LOWE CREEK
3.14 MI EAST OF LA 1, Caddo, LA
Built 1948 Load: 32.4 t ADT: 1,590
LA0002
FairOver: CREEK
5.94 MI EAST OF LA 1, Caddo, LA
Built 1948 Load: 32.4 t ADT: 1,382
LA0002
FairOver: CREEK
5.99 MI EAST OF LA 1, Caddo, LA
Built 1948 Load: 32.4 t ADT: 1,382
LA0173
FairOver: LOGAN BAYOU
5.7 MI EAST OF LA 3094, Caddo, LA
Built 1963 Load: 32.4 t ADT: 15,302
LA0511
FairOver: CREEK
.03 MI EAST OF US 171, Caddo, LA
Built 1963 Load: 32.4 t ADT: 23,737
LA3132
FairOver: DRAIN
2.0 MI. E. OF LA 511, Caddo, LA
Built 1984 Load: 32.4 t ADT: 53,886
I0020
FairOver: DRAIN
.1 MI WEST OF LA 169, Caddo, LA
Built 1991 Load: 32.4 t ADT: 98,318
I0020
FairOver: CREEK
.8 MI EAST OF LA 169, Caddo, LA
Built 1990 Load: 32.4 t ADT: 98,318
I0049
FairOver: DRAIN
1.8 M S OF LA 526 INTR, Caddo, LA
Built 1989 Load: 32.4 t ADT: 60,171
LA0526
FairOver: WEST FORK GILMER BAYOU
1.52 MI S OF LA 511, Caddo, LA
Built 1977 Load: 32.4 t ADT: 16,067
LA0526
FairOver: DRAIN
2.42 MI SOUTH OF I-20, Caddo, LA
Built 1977 Load: 32.4 t ADT: 16,067
LA0526
FairOver: DRAIN
3.42 MI SOUTH OF I-20, Caddo, LA
Built 1977 Load: 32.4 t ADT: 17,579
LA0526
FairOver: DRAIN
3.82 MI SOUTH OF I-20, Caddo, LA
Built 1977 Load: 32.4 t ADT: 17,579
Wallace Lake Rd
FairOver: DRAIN
1.0M SOUTH FLNOY-LUC RD, Caddo, LA
Built 1992 Load: 32.4 t ADT: 2,434
KINGSTON DR
FairOver: BROOKWOOD DITCH
0.3 MI. NO. OF LA 52, Caddo, LA
Built 1980 Load: 32.4 t ADT: 7,686
MT ZION
FairOver: BRUSH BAYOU
2.1 MI EAST OF US 171, Caddo, LA
Built 1988 Load: 32.4 t ADT: 6,960
EAST KINGS HWY
FairOver: DRAIN - C-6
0.1 M SOUTH OF LA 3132, Caddo, LA
Built 1990 Load: 32.4 t ADT: 3,100
W. 62nd ST
FairOver: COURTESY LANE DITCH
0.01 MI E OF HWY 171, Caddo, LA
Built 1969 Load: 32.4 t ADT: 6,000
ALEXANDER AVE
FairOver: BAYOU PIERRE
0.5 M SOUTH OF KINGS HWY, Caddo, LA
Built 1990 Load: 32.4 t ADT: 2,242
KINGS HWY
FairOver: BAYOU PIERRE
1.2 MI WEST OF LA 1, Caddo, LA
Built 1989 Load: 32.4 t ADT: 21,856
ABBIE STREET
FairOver: TRIB. CROSS BAYOU
1.1 MI NORTH OF I-20, Caddo, LA
Built 1986 Load: 32.4 t ADT: 200
ELDER STREET
FairOver: TRIBUTARY TO CROSS BAYOU
0.35 MI. S OF US 17, Caddo, LA
Built 1956 Load: 32.4 t ADT: 850
LEGARDY STREET
FairOver: COOPER ROAD DITCH
0.1 MI NORTH OF LA 3094, Caddo, LA
Built 1986 Load: 32.4 t ADT: 1,352
JONES MABRY ROAD
FairOver: COOPER ROAD DITCH
0.3 MI. NORTH OF LA 3194, Caddo, LA
Built 1984 Load: 32.4 t ADT: 580
Lay St
FairOver: RED BAYOU
DOWNTOWN GILLIAM, Caddo, LA
Built 1937 Load: 32.4 t ADT: 22
US0079
FairOver: CANEY CREEK
1.3 MI NORTH OF LA 9, Claiborne, LA
Built 1930 Load: 32.4 t ADT: 5,728
LA0009
FairOver: CREEK
11.45 MI NORTH OF LA 2, Claiborne, LA
Built 1949 Load: 32.4 t ADT: 1,435
LA0002-A
FairOver: MIDDLEFORK BAYOU DARBONN
.94 MI EAST OF LA 807, Claiborne, LA
Built 1951 Load: 32.4 t ADT: 1,329
LA0002-A
FairOver: LICK CREEK
1.39 MI EAST OF LA 161, Claiborne, LA
Built 1972 Load: 32.4 t ADT: 406
LA0002-A
FairOver: CREEK
2.1 MI EAST OF LA 520, Claiborne, LA
Built 1948 Load: 32.4 t ADT: 389
LA0002-A
FairOver: BRANCH
6.69 MI SOUTH OF LA 9, Claiborne, LA
Built 1927 Load: 32.4 t ADT: 467
LA0002
FairOver: BUCK CREEK
2.67 MI EAST OF LA 539, Claiborne, LA
Built 1962 Load: 32.4 t ADT: 987
LA0154
FairOver: CREEK
5.96 MI NORTH OF I-20, Claiborne, LA
Built 1931 Load: 32.4 t ADT: 609
LA0520
FairOver: STEEP CREEK
1.95 MI NORTH OF LA 2 ALT, Claiborne, LA
Built 1961 Load: 32.4 t ADT: 374
LA0520
FairOver: LICK CREEK
3.84 MI NORTH OF LA 2 ALT, Claiborne, LA
Built 1961 Load: 32.4 t ADT: 374
Showing 3,101-3,150 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.