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
LA0027
FairOver: DRY CREEK
6.17 MI. NORTH OF LA 12, Beauregard, LA
Built 1954 Load: 22.7 t ADT: 4,695
W. SALE RD
FairOver: CONTRABAND BAYOU
0.9 MI W. OF LA 385, Calcasieu, LA
Built 1990 Load: 22.7 t ADT: 14,015
MILLER OILFIELD RD
FairOver: GULLY
1.1 MI E of LA 101, Jefferson Davis, LA
Built 1981 Load: 22.7 t ADT: 50
FREELAND ROAD
FairOver: BAYOU
0.6 MI S of MARCANTEL RD, Jefferson Davis, LA
Built 1975 Load: 22.7 t ADT: 60
LA0494
FairOver: CREEK
1.52 MI. E OF INT LA1, Natchitoches, LA
Built 1963 Load: 22.7 t ADT: 726
US0171
FairOver: BAYOU SAN MIGUEL
0.96 MI. NORTH OF LA 120, Sabine, LA
Built 1963 Load: 22.7 t ADT: 4,790
US0171
FairOver: BEAR CREEK
3.96 MI. NORTH OF LA 174, Sabine, LA
Built 1963 Load: 22.7 t ADT: 5,228
LA0117
FairOver: CALCASIEU RIVER
3.26 MI. NORTH OF LA 111, Vernon, LA
Built 1962 Load: 22.7 t ADT: 1,513
LA0465
FairOver: BALL BRANCH
5.25 MI EAST OF LA 8, Vernon, LA
Built 1981 Load: 22.7 t ADT: 500
LA0499
FairOver: BRUSHY CREEK
3.17 MI EAST OF LA 34, Winn, LA
Built 1963 Load: 22.7 t ADT: 394
US0084
FairOver: HAIRS CREEK
1.4 MI EAST OF LA 127, LaSalle, LA
Built 1960 Load: 22.7 t ADT: 3,980
Milldale Rd
FairOver: LITTLE SANDY CREEK
2.6 MI. SW. OF PRIDE, East Baton Rouge, LA
Built 1959 Load: 22.7 t ADT: 377
LA0010
FairOver: SPRING BRANCH
6.9 Mi. E of LA 961, East Feliciana, LA
Built 1963 Load: 22.7 t ADT: 2,534
US0061
FairOver: DRAIN CANAL
1.39 M W of LA 641, St. James, LA
Built 1954 Load: 22.7 t ADT: 8,171
US0061
FairOver: TCHACKCHOU BAYOU
US0061, St. James, LA
Built 1954 Load: 22.7 t ADT: 8,171
LA0010
FairOver: ALEXANDER CREEK
0.6 MILES NORTHEAST OF US, West Feliciana, LA
Built 1948 Load: 22.7 t ADT: 2,761
Bains Rd
FairOver: BEAR CREEK
2.4 MI.LA66 US61 JCT., West Feliciana, LA
Built 1998 Load: 22.7 t ADT: 80
Solitude Rd
FairOver: LITTLE BAYOU SARA
0.01 Mi. S. of LA 66, West Feliciana, LA
Built 1987 Load: 22.7 t ADT: 800
Old Tunica Rd
FairOver: MOSHER CREEK
0.8 MI.N. Of LA 968, West Feliciana, LA
Built 1970 Load: 22.7 t ADT: 90
LA0447
FairOver: FELDER BAYOU
3.0 M N OF LA 16, Livingston, LA
Built 1962 Load: 22.7 t ADT: 34,245
Whit Holden Rd
FairOver: DUMPLIN CREEK
1.2 MILES FROM JCT 1027, Livingston, LA
Built 1965 Load: 22.7 t ADT: 150
LA0010
FairOver: AMITE RIVER RELIEF
1.2 M W OF LA 38, St. Helena, LA
Built 1963 Load: 22.7 t ADT: 2,534
LA0010
FairOver: AMITE RIVER RELIEF
1.0 M W OF LA 38, St. Helena, LA
Built 1963 Load: 22.7 t ADT: 2,534
LA0448
FairOver: BLACK CREEK
LA0448, St. Helena, LA
Built 1962 Load: 22.7 t ADT: 547
LA0025
FairOver: DRAIN
1.3 M S OF LA 40, St. Tammany, LA
Built 1963 Load: 22.7 t ADT: 3,684
LA0025
FairOver: BOGUE FALAYA R
LA0025, St. Tammany, LA
Built 1963 Load: 22.7 t ADT: 9,685
Lake Rd
FairOver: LACOMBE BAYOU
1.0M SOUTH OF LA 434, St. Tammany, LA
Built 1992 Load: 22.7 t ADT: 100
Magnolia Gardens
FairOver: BRIDGE OVER UNNAMED CREE
1MI.N.OF JCT LA 21 & LA36, St. Tammany, LA
Built 1996 Load: 22.7 t ADT: 100
US0190
FairOver: WASHLEY CREEK
US0190, Tangipahoa, LA
Built 1954 Load: 22.7 t ADT: 8,262
US0190
FairOver: CREEK
4.6 M E OF LA 445, Tangipahoa, LA
Built 1954 Load: 22.7 t ADT: 8,262
LA0016
FairOver: DRAIN
0.7 M E OF US 51, Tangipahoa, LA
Built 1962 Load: 22.7 t ADT: 12,718
LA0016
FairOver: SPRING BRANCH
LA0016, Tangipahoa, LA
Built 1962 Load: 22.7 t ADT: 12,718
LA0022
FairOver: NATALBANY RIVER
0.07 MI. EAST OF LA 42, Tangipahoa, LA
Built 1956 Load: 22.7 t ADT: 9,490
LA0021
FairOver: CREEK
2.5 M N OF LA 436, Washington, LA
Built 1960 Load: 22.7 t ADT: 4,719
LA0021
FairOver: SCARBOROUGHS CREEK
1.7 M SW OF LA 438, Washington, LA
Built 1960 Load: 22.7 t ADT: 4,719
LA0021
FairOver: SCARBOROUGHS CREEK
1.1 M SW OF LA 438, Washington, LA
Built 1960 Load: 22.7 t ADT: 4,719
LA0021
FairOver: CREEK
0.7 M S OF LA 438, Washington, LA
Built 1960 Load: 22.7 t ADT: 4,719
LA0021
FairOver: ARDS CREEK
LA0021, Washington, LA
Built 1960 Load: 22.7 t ADT: 2,646
LA0016
FairOver: BERRYS CREEK
LA0016, Washington, LA
Built 1969 Load: 22.7 t ADT: 1,137
LA0025
FairOver: MILE BRANCH
LA0025, Washington, LA
Built 1963 Load: 22.7 t ADT: 4,117
LA0025
FairOver: CALICO BRANCH
1.3 M NW OF LA 10, Washington, LA
Built 1963 Load: 22.7 t ADT: 4,117
LA0025
FairOver: HAYS CREEK
LA0025, Washington, LA
Built 1963 Load: 22.7 t ADT: 4,117
LA0438
FairOver: DRAIN
0.2 M W OF LA 25, Washington, LA
Built 1967 Load: 22.7 t ADT: 666
LA0439
FairOver: DRAIN
4.1 M W OF LA 60, Washington, LA
Built 1955 Load: 22.7 t ADT: 1,235
I0010
FairOver: GRAVIER STREET
0.5 MI NE OF US 90B, Orleans, LA
Built 1969 Load: 23.0 t ADT: 172,504
LA0046
FairOver: BAYOU LA LOUTRE
4.6 MI EAST OF LA 300, St. Bernard, LA
Built 1957 Load: 23.0 t ADT: 1,536
Jefferson Island
FairOver: Deblanc Coulee
1.5 Mi. W. of US 90, Iberia, LA
Built 1960 Load: 23.0 t ADT: 2,868
Surry St.
FairOver: VERMILION RIVER
0.8 MI EAST OF US 90, Lafayette, LA
Built 1948 Load: 23.0 t ADT: 16,800
Jeff Deblanc Pkwy
FairOver: TECHE BAYOU
0.4 MI E of LA 31, St. Martin, LA
Built 2001 Load: 23.0 t ADT: 3,818
Barrow St.
FairOver: CANAL
0.3 Mi S of LA 3211, St. Mary, LA
Built 1979 Load: 23.0 t ADT: 500
Showing 1,551-1,600 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.