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
Sadler Rd.
GoodOver: COCODRIE BAYOU
0.25 Mi SW of La 115, Evangeline, LA
Built 2009 Load: 23.6 t ADT: 42
LA1161
GoodOver: BAYOU DES CANNES
3.32 MI NORTH OF LA 104, Evangeline, LA
Built 1962 Load: 23.6 t ADT: 2,821
LA0686
GoodOver: SOUTH RELIEF CANL
1.5 MI SOUTH OF LA 347, St. Martin, LA
Built 1959 Load: 23.6 t ADT: 3,212
Elmo Rd
GoodOver: TIGRE BAYOU
1.02 MI. W. OF LA 330, Vermilion, LA
Built 2012 Load: 23.6 t ADT: 845
LA0330
GoodOver: RAMSEY CANAL
4.58 MI S. OF LA 82, Vermilion, LA
Built 1959 Load: 23.6 t ADT: 1,814
LA0127
GoodOver: MCCLELLEN BRANCH
4.6 MI NW OF LA 125, Caldwell, LA
Built 1962 Load: 23.6 t ADT: 314
LA0431
GoodOver: BAYOU FRANCOIS
LA0431, Ascension, LA
Built 1958 Load: 23.6 t ADT: 9,608
LA0931
GoodOver: BAYOU MILLET
1.3 M SW of LA 431&LA 931, Ascension, LA
Built 1963 Load: 23.6 t ADT: 4,000
LA0937
GoodOver: ANDERSON CANAL
1.8 M E of LA 22&LA 935, Ascension, LA
Built 1962 Load: 23.6 t ADT: 1,313
LA3006
GoodOver: CYPRESS BAYOU
2.8 M N of LA 19&I -110, East Baton Rouge, LA
Built 1957 Load: 23.6 t ADT: 7,620
LA0076
GoodOver: BAYOU MARINGOUIN
LA0076, Iberville, LA
Built 1962 Load: 23.6 t ADT: 2,899
LA3000
GoodOver: RAMAH CANAL
0.1 MI N OF I10 RAMP, Iberville, LA
Built 1957 Load: 23.6 t ADT: 965
LA0978
GoodOver: BAYOU GROSSE TETE
LA0978, Pointe Coupee, LA
Built 1962 Load: 23.6 t ADT: 1,067
Greenwood Rd
GoodOver: Old Cr
7.2 Mi. S. of LA 66, West Feliciana, LA
Built 2023 Load: 23.6 t ADT: 40
LA0965
GoodOver: CHANEY CREEK M F
LA0965, West Feliciana, LA
Built 1959 Load: 23.6 t ADT: 2,133
LA0965
GoodOver: CHANEY CREEK MF
LA0965, West Feliciana, LA
Built 1959 Load: 23.6 t ADT: 2,133
Highland Rd
GoodOver: LITTLE BAYOU SARA
0.3 MI W of LA 66, West Feliciana, LA
Built 2000 Load: 23.6 t ADT: 210
Wagner Rd
GoodOver: BLOOD RIVER
3.4 MILES NORTH OF JCT US, Livingston, LA
Built 2010 Load: 23.6 t ADT: 450
LA0016
GoodOver: BAYOU KING GEORGE
LA0016, Livingston, LA
Built 1960 Load: 23.6 t ADT: 4,313
LA0042
GoodOver: LOBELL CREEK
1.0 M W OF LA 43, Livingston, LA
Built 1961 Load: 23.6 t ADT: 1,298
LA0040
GoodOver: L NATALBANY REL
2.5 M E OF LA 43, Livingston, LA
Built 1960 Load: 23.6 t ADT: 913
LA1085
GoodOver: LA 1085 OVER I-12
LA1085, St. Tammany, LA
Built 1975 Load: 23.6 t ADT: 6,010
LA1081
GoodOver: L.BOGUE FALAYA
LA1081, St. Tammany, LA
Built 1960 Load: 23.6 t ADT: 2,000
LA1081
GoodOver: L.BOGUE FALAYA
LA1081, St. Tammany, LA
Built 1960 Load: 23.6 t ADT: 2,000
LA1083
GoodOver: CREEK
6.1 M SW OF LA 41, St. Tammany, LA
Built 1958 Load: 23.6 t ADT: 1,219
LA1083
GoodOver: BULLY BRANCH
2.1 M N OF LA 21, St. Tammany, LA
Built 1958 Load: 23.6 t ADT: 1,219
LA1061
GoodOver: BIG CREEK
0.9 M N OF LA 10, Tangipahoa, LA
Built 1959 Load: 23.6 t ADT: 887
LA1061
GoodOver: BIG CREEK BRANCH
1.2 M N OF LA 10, Tangipahoa, LA
Built 1959 Load: 23.6 t ADT: 887
LA1049
GoodOver: JENNYS BRANCH
LA. 1049, Tangipahoa, LA
Built 1960 Load: 23.6 t ADT: 574
LA0438
GoodOver: MIDDLE RELIEF
LA0438, Washington, LA
Built 1960 Load: 23.6 t ADT: 688
LA0438
GoodOver: NORTH RELIEF
LA0438, Washington, LA
Built 1960 Load: 23.6 t ADT: 688
LA0438
GoodOver: TOM BRANCH
1.0 M SW OF LA 424, Washington, LA
Built 1962 Load: 23.6 t ADT: 519
LA0439
GoodOver: MEAZELS CREEK
LA0439, Washington, LA
Built 1964 Load: 23.6 t ADT: 1,235
LAPALCO BLVD
GoodOver: OAKWOOD CANAL
0.1MI.W OF BELLCHASE, Jefferson, LA
Built 1960 Load: 23.7 t ADT: 20,000
CITRUS RD
GoodOver: SONIAT CANAL
0.01 MI.WEST.OF.HICK, Jefferson, LA
Built 1965 Load: 23.7 t ADT: 1,000
US0090
GoodOver: RIGOLETS PASS
8.7 MILES EAST OF CHEF PA, Orleans, LA
Built 2008 Load: 23.7 t ADT: 1,215
STARS & STRIPES B
GoodOver: CITY STREET/RAILROAD
0.2 MI WEST OF LA 47, Orleans, LA
Built 1998 Load: 23.7 t ADT: 13,713
Sonnier Rd.
GoodOver: CREEK
1.8 MI. WEST OF LA 95, Acadia, LA
Built 2012 Load: 23.7 t ADT: 48
Perchville Rd
GoodOver: MALLET BAYOU
2.0 Mi W of La 367, Acadia, LA
Built 2012 Load: 23.7 t ADT: 528
Perchville Rd
GoodOver: MALLET BAYOU
2.1 Mi W of La 367, Acadia, LA
Built 1999 Load: 23.7 t ADT: 528
Belle Place Rd
GoodOver: Teche Bayou
0.1 Mi. N. Of La 86, Iberia, LA
Built 1988 Load: 23.7 t ADT: 3,317
W. Congress St.
GoodOver: MINE COULEE
0.4 Miles SW of LA 3025, Lafayette, LA
Built 1968 Load: 23.7 t ADT: 15,700
US0080
GoodOver: UPRR
0.41 MI. E. OF I-20, Caddo, LA
Built 2016 Load: 23.7 t ADT: 11,342
LA0151
GoodOver: CREEK
3.36 MILES NORTH JCT LA54, Lincoln, LA
Built 2011 Load: 23.7 t ADT: 527
LA0151
GoodOver: CREEK
1.96 MILES NORTH JCT LA 5, Lincoln, LA
Built 2011 Load: 23.7 t ADT: 1,110
MAYS CROSSING RD
GoodOver: DARBONNE BAYOU
2.4 MI N of LA 151, Lincoln, LA
Built 2001 Load: 23.7 t ADT: 165
FUSELIER LN
GoodOver: OBERLIN DITCH
0.5 MI N of W 9TH AVE, Allen, LA
Built 2011 Load: 23.7 t ADT: 125
CARRIER RD
GoodOver: GUM BRANCH
3.1 MI EAST OF US 165, Allen, LA
Built 2011 Load: 23.7 t ADT: 180
River Rd
GoodOver: BAYOU CHOCTAW
1.3 MI. NORTH OF LA 1, Avoyelles, LA
Built 1989 Load: 23.7 t ADT: 150
NFSR 506
GoodOver: CYPRESS CREEK
NO DATA ENTERED, Winn, LA
Built 2003 Load: 23.7 t ADT: 20
Showing 6,701-6,750 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.