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
I0010
FairOver: WEST FLOODWAY
0.53 M W of I-10&LA975, Iberville, LA
Built 1972 Load: 35.4 t ADT: 42,449
I0010
FairOver: LA975 E FLOODWAY LA3000
5.6 Mi E of La3177 Onramp, Iberville, LA
Built 1972 Load: 35.4 t ADT: 21,450
I0010
FairOver: EAST FLOODWAY
0.2 M W OF I-10&LA3000, Iberville, LA
Built 1972 Load: 35.4 t ADT: 1,585
I0010
FairOver: BLIND RIVER
I0010, St. James, LA
Built 1975 Load: 35.4 t ADT: 49,274
I0010
FairOver: BLIND RIVER
I0010, St. James, LA
Built 1975 Load: 35.4 t ADT: 29,510
LA0016
FairOver: LA 16 OVER I-12
LA0016, Livingston, LA
Built 1970 Load: 35.4 t ADT: 10,776
LA0043
FairOver: ST JOSEPH BRANCH
0.1 M N OF LA 10, St. Helena, LA
Built 1976 Load: 35.4 t ADT: 1,419
LA0043
FairOver: LIVERPOOL BRANCH
1.1 M S OF LA 38, St. Helena, LA
Built 1977 Load: 35.4 t ADT: 1,419
LA0016
FairOver: TICKFAW RIVER
0.30M E JCT LA441 & LA16, St. Helena, LA
Built 1992 Load: 35.4 t ADT: 5,293
I0055
FairOver: I-55 OVER US 51 & SWAMP
I055, St. John the Baptist, LA
Built 1975 Load: 35.4 t ADT: 24,000
LA0022
FairOver: TCHEFUNCTE R/MADISONVILL
MADISONVILLE (LA 22), St. Tammany, LA
Built 1980 Load: 35.4 t ADT: 16,517
LA0040
FairOver: BOGUE FALAYA RIVER
0.7 M E OF LA 25, St. Tammany, LA
Built 1978 Load: 35.4 t ADT: 3,689
LA0040
FairOver: BOGUE FALAYA RELIEF
0.8 M E OF LA 25, St. Tammany, LA
Built 1978 Load: 35.4 t ADT: 3,689
LA0040
FairOver: BEASON CREEK
0.3 M E OF LA 1080, St. Tammany, LA
Built 1979 Load: 35.4 t ADT: 3,689
LA0040
FairOver: PIGEON ROOST CREEK
LA 40 @ LOG MI 03.98, St. Tammany, LA
Built 1980 Load: 35.4 t ADT: 3,689
LA0040
FairOver: PIGEON ROOST CREEK
LA 40 @ LOGMI 04.11, St. Tammany, LA
Built 1980 Load: 35.4 t ADT: 3,689
LA0040
FairOver: BILLS BRANCH
0.1 M S OF LA 437, St. Tammany, LA
Built 1977 Load: 35.4 t ADT: 5,160
I0010
FairOver: US 190
1 Mi N of US 190-B, St. Tammany, LA
Built 1966 Load: 35.4 t ADT: 55,785
I0010
FairOver: US 190
1.5 MI S OF I-12, St. Tammany, LA
Built 1966 Load: 35.4 t ADT: 1,600
AIRPORT ROAD
FairOver: I-12
6.2 M E OF LA 434, St. Tammany, LA
Built 1972 Load: 35.4 t ADT: 4,450
LA1088
FairOver: I-12
2.5 M E OF LA 59, St. Tammany, LA
Built 1976 Load: 35.4 t ADT: 9,722
LA0022
FairOver: LA 22 OVER I-55
LA0022, Tangipahoa, LA
Built 1960 Load: 35.4 t ADT: 18,757
LA0021
FairOver: LEE CREEK
LA0021, Washington, LA
Built 1950 Load: 35.4 t ADT: 7,160
Audubon Ave
FairOver: LAFOURCHE BAYOU
00.01 LOG MI. FROM LA 308, Lafourche, LA
Built 1986 Load: 35.6 t ADT: 7,219
ALLEN TOUSSAINT B
FairOver: LONDON AV.CANAL
0.01 MI W OF WICKFIELD DR, Orleans, LA
Built 1958 Load: 35.6 t
Leman Rd
FairOver: BEAVER CREEK
0.75 Mi S of La 106, Evangeline, LA
Built 1996 Load: 35.6 t ADT: 115
US0090
FairOver: RODERE CANAL
0.56 Mi E of LA 329, Iberia, LA
Built 1969 Load: 35.6 t ADT: 32,022
High Meadow Blvd
FairOver: COULEE
0.08 Mi E0. of I-49, Lafayette, LA
Built 1974 Load: 35.6 t ADT: 1,000
US0190
FairOver: BAYOU COURTABLEAU E.B.
4.55 MI EAST OF LA 741, St. Landry, LA
Built 2004 Load: 35.6 t ADT: 13,476
Lebeau Church Rd
FairOver: BAYOU PETITE PRAIRIE
0.75 Mi SE of La 10, St. Landry, LA
Built 1992 Load: 35.6 t ADT: 110
LA0002
FairOver: BLACK BAYOU
5.15 MI EAST OF LA 1, Caddo, LA
Built 1980 Load: 35.6 t ADT: 1,382
HIGHLAND AVENUE
FairOver: OCKLEY DITCH
0.8 MI SO OF KINGS HWY., Caddo, LA
Built 1996 Load: 35.6 t ADT: 2,000
Choctaw Lane
FairOver: CHOCTAW BAYOU
0.2 MI N OF CADDO RD 6, Caddo, LA
Built 1998 Load: 35.6 t ADT: 23
Buffalo RD
FairOver: BUFFALO BAYOU
1.78 M SOUTH OF LA 509, De Soto, LA
Built 1991 Load: 35.6 t ADT: 165
Victory Rd
FairOver: BOONE CREEK
3.5 MI. SE OF US 80, Webster, LA
Built 1990 Load: 35.6 t ADT: 25
HOLLYBROOK RD
FairOver: MUD SLOUGH
0.2 MI EAST OF LA 134, East Carroll, LA
Built 1987 Load: 35.6 t ADT: 160
ROCKSHOP RD
FairOver: CYPRESS BAYOU
0.4 MI NW of US 167, Lincoln, LA
Built 2003 Load: 35.6 t ADT: 500
LA8406
FairOver: CREEK
1.67 MI NORTH OF US 80, Ouachita, LA
Built 1962 Load: 35.6 t ADT: 15,737
GREEN ISLAND RD
FairOver: GREEN ISLAND MARSH CREEK
5.3 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 35.6 t ADT: 125
RADIO TOWER ROAD
FairOver: DRAIN
1.7 MI E of LA 102, Jefferson Davis, LA
Built 1987 Load: 35.6 t ADT: 30
LA0008
FairOver: OUACHITA RIVER
0.26 MI E OF LA 124, Catahoula, LA
Built 2017 Load: 35.6 t ADT: 1,394
Lakeshore Dr
FairOver: LITTLE BAYOU BRIDGE
1.0 M SW of US 190, St. Tammany, LA
Built 1996 Load: 35.6 t ADT: 1,300
Morrison Rd
FairOver: DRAINAGE CANAL
.8 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 36.0 t
N. Church St.
FairOver: Coulee
.13 MI N of E St Peter St, Lafayette, LA
Built 1995 Load: 36.0 t ADT: 13,800
CLYDE FANT PKWY
FairOver: STONER AVENUE
0.9 MI. N OF LA 3032, Caddo, LA
Built 1974 Load: 36.0 t ADT: 10,602
US0167
FairOver: CREEK
7.35 MI N of US 80, Lincoln, LA
Built 2008 Load: 36.0 t ADT: 422
US0167
FairOver: CREEK
7.35 MI N of US 80, Lincoln, LA
Built 2008 Load: 36.0 t ADT: 2,487
BONNER ST
FairOver: KCS RAILROAD
BONNER ST/ RUSTON, Lincoln, LA
Built 2004 Load: 36.0 t ADT: 6,200
BREARD ST
FairOver: DRAINAGE DITCH
BREARD ST. MONROE LA, Ouachita, LA
Built 1970 Load: 36.0 t ADT: 2,000
US0167
FairOver: MIDDLE FORK BAYOU
2.0 MI. NORTH OF LA 545, Union, LA
Built 2012 Load: 36.0 t ADT: 422
Showing 4,201-4,250 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.