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
ADAMS ST
GoodOver: WEST PRONG YOUNGS BAYOU
0.9 MI NW of I-20, Ouachita, LA
Built 1999 Load: 22.0 t ADT: 300
Newsome Rd
GoodOver: WIGGINS BAYOU
0.41 MI WEST LA 107, Rapides, LA
Built 1999 Load: 22.0 t ADT: 145
LA0008
GoodOver: CREEK
.7 MI EAST OF LA 913, Catahoula, LA
Built 1975 Load: 22.0 t ADT: 1,394
LA1016-1
GoodOver: BAYOU VERRET
2 Mi E of LA 70, Assumption, LA
Built 2010 Load: 22.0 t ADT: 192
Central Throughway
GoodOver: BEAVER BAYOU
0.2 MI. S. OF LA37, East Baton Rouge, LA
Built 2011 Load: 22.0 t ADT: 10,400
I0010
GoodOver: UP RR & LEBLANC RD
I0010, West Baton Rouge, LA
Built 1968 Load: 22.0 t ADT: 18,560
McLIN Rd
GoodOver: COLYELL CREEK BRIDGE
5 SO OF 190 @ SATSUMA RD, Livingston, LA
Built 1996 Load: 22.0 t ADT: 500
Reed ave.
GoodOver: CANAL
0.6 M.S.OF US 190 &HWY 51, Tangipahoa, LA
Built 2002 Load: 22.0 t ADT: 883
Transcontinental D
GoodOver: DRAIN CANAL NO. 4
0.8 MI S. OF VETERANS HWY, Jefferson, LA
Built 1995 Load: 22.4 t ADT: 20,800
W. Napolean Ave
GoodOver: CANAL NO. 4
0.05 W OF KENT AVENUE, Jefferson, LA
Built 1995 Load: 22.4 t ADT: 20,800
W. Napolean Ave
GoodOver: CANAL #4
0.7 MI. E. OF DAVID DRIVE, Jefferson, LA
Built 2000 Load: 22.4 t
LA0095
GoodOver: Bayou Queue De Tortue
.68 MI. NORTH OF I-10, Acadia, LA
Built 1998 Load: 22.4 t ADT: 5,938
LA3067
GoodOver: CREEK
1.47 MI WEST OF LA 91, Acadia, LA
Built 1964 Load: 22.4 t ADT: 448
Spring Prairie Rd.
GoodOver: WEST FORK BAYOU
0.34 Mi W of La 10, Evangeline, LA
Built 1987 Load: 22.4 t ADT: 46
US0090
GoodOver: LA0083
6 Miles West of LA 85, Iberia, LA
Built 2004 Load: 22.4 t ADT: 10,090
I0049
GoodOver: LA 3132/RAMPS/T&P RR
1.35M NORTH OF LA 526, Caddo, LA
Built 1991 Load: 22.4 t ADT: 28,142
Ridge Rd
GoodOver: BAYOU DANIALS
4 MI. SW OF WHITE CASTLE, Iberville, LA
Built 1998 Load: 22.4 t ADT: 120
Ellis Lee Rd
GoodOver: MILE BRANCH
1.7 MI N LA 10&16TH FRANK, Washington, LA
Built 2000 Load: 22.4 t ADT: 392
W. Napolean Ave
GoodOver: CANAL NUMBER 4
0.5 MI E OF DAVID DRIVE, Jefferson, LA
Built 1996 Load: 22.7 t
LA0001
GoodOver: BAYOU LAFOURCHE
LA 1 OVER BAYOU LAFOURCHE, Lafourche, LA
Built 2009 Load: 22.7 t ADT: 3,305
AIRPORT RD
GoodOver: CANAL
1.18 MI E. JSC. LA308, Lafourche, LA
Built 1983 Load: 22.7 t ADT: 788
JOURDAN RD OFFRAMP
GoodOver: CITY STREET/RAILROAD
.15 MI S OF DOWNMAN ROAD, Orleans, LA
Built 1991 Load: 22.7 t
LA0095
GoodOver: DRAIN
1.55 MI NORTH OF LA 35, Acadia, LA
Built 1939 Load: 22.7 t ADT: 1,664
LA1168
GoodOver: DRAIN
3.78 MI SOUTH OF LA 10, Evangeline, LA
Built 1962 Load: 22.7 t ADT: 409
LA0014
GoodOver: ARMANCO CANAL
.8 MI West of US 90, Iberia, LA
Built 1960 Load: 22.7 t ADT: 12,863
Madeline Ave.
GoodOver: MINE BRANCH COULEE
0.21 Mi W of LA 182, Lafayette, LA
Built 1978 Load: 22.7 t ADT: 720
I0049
GoodOver: E.Grolee St/UPRR
4.40 Mi S of LA 744, St. Landry, LA
Built 1983 Load: 22.7 t ADT: 25,609
Market Rd
GoodOver: Bayou Tesson
1.0 Mi. N. of US 190, St. Landry, LA
Built 1965 Load: 22.7 t ADT: 1,000
LONGLEAF RD
GoodOver: BAYOU
1.9 Mi E of La 13, Vermilion, LA
Built 2013 Load: 22.7 t ADT: 243
LA0014
GoodOver: VINCENT CANAL
0.6 MI W. OF LA 13, Vermilion, LA
Built 1959 Load: 22.7 t ADT: 3,212
LA0014
GoodOver: COULEE BAYOU
2.1 MI E. OF LA 35, Vermilion, LA
Built 1959 Load: 22.7 t ADT: 7,329
KELLI ROAD
GoodOver: FLAT RIVER
0.8 MI SE OF LA 157, Bossier, LA
Built 2020 Load: 22.7 t ADT: 10
WOOLWORTH RD
GoodOver: TRIB TO GILMER BAYOU
0.2 MI. S. OF LA 526, Caddo, LA
Built 2016 Load: 22.7 t ADT: 4,482
WEST 72nd
GoodOver: 71ST STREET DITCH
0.03 MI E OF LINWOOD AVE, Caddo, LA
Built 1987 Load: 22.7 t ADT: 152
Gaskin Rd
GoodOver: Cripple Creek
1 Mi. NE of LA151, Lincoln, LA
Built 2021 Load: 22.7 t ADT: 50
HARP ST
GoodOver: BAYOU BONNE IDEE
0.4 MI W of US 165, Morehouse, LA
Built 2005 Load: 22.7 t ADT: 150
CROWELL RD
GoodOver: MILTON CREEK
2.0 MILES SOUTH OF LA 34, Ouachita, LA
Built 2016 Load: 22.7 t ADT: 33
BRIMBERRY RD
GoodOver: CREEK
1.0 MI W of LA 133, Richland, LA
Built 1998 Load: 22.7 t ADT: 60
LA0027
GoodOver: CREEK
5.0 MI N of LA 110, Beauregard, LA
Built 1955 Load: 22.7 t ADT: 3,333
CARL HOPPE ROAD
GoodOver: ARCENEAUX BAYOU
0.7 MI. W. OF US 165, Jefferson Davis, LA
Built 1986 Load: 22.7 t ADT: 80
LA0362
GoodOver: COCO CANAL
1.05 MILES EAST OF LA 361, Avoyelles, LA
Built 1960 Load: 22.7 t ADT: 759
BELSHA RD
GoodOver: DOWDEN CREEK
1.4 MILES NORTH OF LA 111, Vernon, LA
Built 2001 Load: 22.7 t ADT: 100
Gregory Rd
GoodOver: LOST Cr
1M E of La 4, Caldwell, LA
Built 1996 Load: 22.7 t ADT: 70
Parish Line Rd.
GoodOver: TURKEY CREEK
.38 MILES WEST OF ELLA RO, Franklin, LA
Built 2015 Load: 22.7 t ADT: 10
LA0015
GoodOver: STOKES BAYOU
.7 MI NORTH OF LA 3210, Franklin, LA
Built 2007 Load: 22.7 t ADT: 4,592
Jim Albert Rd
GoodOver: CREEK
0.39 miles E of LA 17, Franklin, LA
Built 1993 Load: 22.7 t ADT: 80
US0061
GoodOver: CONWAY CANAL
US0061, Ascension, LA
Built 1954 Load: 22.7 t ADT: 8,171
US0061
GoodOver: AIRLINE DRAINAGE
3.2 M SE of US 61&LA 22, Ascension, LA
Built 1954 Load: 22.7 t ADT: 8,171
US0061
GoodOver: AIRLINE DRAINAGE
1.7 M SE of US 61&LA 22, Ascension, LA
Built 1954 Load: 22.7 t ADT: 8,171
US0061
GoodOver: CANAL
1 M SE of US 61&LA 22, Ascension, LA
Built 1954 Load: 22.7 t ADT: 8,171
Showing 6,601-6,650 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.