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
LA0012
FairOver: LONG SLOUGH
3.5 MI W of LA 109, Calcasieu, LA
Built 2013 Load: 37.3 t ADT: 3,365
E DAVE DUGAS RD
FairOver: CANAL
0.5 MI E of LA 27, Calcasieu, LA
Built 2014 Load: 37.3 t ADT: 2,232
LA0042
FairOver: AMITE RIVER RELIEF
0.7 Mi. E of LA 933, Ascension, LA
Built 2011 Load: 37.3 t ADT: 8,186
I0010
FairOver: DRAINAGE CANAL
1.9 Mi W of LA 22, Ascension, LA
Built 1979 Load: 37.3 t ADT: 25,735
LA0010
FairOver: COMITE RIVER RELIEF
1.77 MILES W OF JCT LA 67, East Feliciana, LA
Built 2005 Load: 37.3 t ADT: 3,904
LA0010
FairOver: COMITE RIVER RELIEF #1
1.5 MILES W OF JCT LA 67, East Feliciana, LA
Built 2005 Load: 37.3 t ADT: 3,904
LA0010
FairOver: COMITE RIVER RELIEF #2
1.19 MI WEST JCT LA 67, East Feliciana, LA
Built 2005 Load: 37.3 t ADT: 3,904
US0190
FairOver: YELLOW WATER RIVER
US0190, Tangipahoa, LA
Built 1969 Load: 37.3 t ADT: 18,261
Oliver Rd
FairOver: CAMERON CANAL
3.2 Mi W of La 332, Vermilion, LA
Built 2015 Load: 37.5 t ADT: 28
LORRAINE ROAD
FairOver: LACASSINE BAYOU
2.0 MI EAST OF LA 101, Calcasieu, LA
Built 2004 Load: 37.5 t ADT: 20
FAUL ROAD
FairOver: CREEK
1.78 MI N I-10 N SER RD, Jefferson Davis, LA
Built 2019 Load: 37.5 t ADT: 32
VETERANS BLVD
FairOver: SONIAT CANAL
0.1 MILE WEST OF DAVID DR, Jefferson, LA
Built 2005 Load: 37.6 t
Lake Forest BLVD
FairOver: BERG CANAL
0.2MI.E.OF WRIGHT RD, Orleans, LA
Built 1960 Load: 37.6 t
Lake Forest BLVD
FairOver: BERG CANAL
0.2 MI.E.OF WRIGHT.R, Orleans, LA
Built 1975 Load: 37.6 t
BAYOUSIDE DR
FairOver: BAYOU PETIT CAILLOU
.03 MILES NORTH OF LA 56, Terrebonne, LA
Built 2010 Load: 37.6 t ADT: 2,912
Ozark Rd.
FairOver: Coulee
0.4 Mi. West of La 95, Acadia, LA
Built 2006 Load: 37.6 t ADT: 240
Maryview Farm Rd.
FairOver: DRAIN
.9 Mi East of LA 728-1, Lafayette, LA
Built 2006 Load: 37.6 t ADT: 752
US0090
FairOver: ATCHAFALAYA RIVER
.3 Miles E of La 182 Ramp, St. Mary, LA
Built 1975 Load: 37.6 t ADT: 7,885
Placide Rd
FairOver: COULEE
0.02 Mi W of US 167, Vermilion, LA
Built 1996 Load: 37.6 t ADT: 720
Tiburon Blvd
FairOver: WILLOW CHUTE BAYOU
.01 MI E OF SWAN LAKE RD., Bossier, LA
Built 2005 Load: 37.6 t ADT: 3,408
Palmetto Ave
FairOver: Lil Cypress Bayou
0.3 MILE EAST OF LA HWY 3, Bossier, LA
Built 1986 Load: 37.6 t ADT: 2,300
Redland Rd
FairOver: Boggs Creek Trib
1.3 MI. WEST OF HWY 157, Bossier, LA
Built 1986 Load: 37.6 t ADT: 580
LA0526
FairOver: I-20
0.1 Mi S. of US 79, Caddo, LA
Built 1965 Load: 37.6 t ADT: 14,962
BUNCOMBE RD
FairOver: TRIB TO GILMER BAYOU
0.9 MI. N.E. CADDO RD. 7, Caddo, LA
Built 1983 Load: 37.6 t ADT: 2,656
LA0005
FairOver: CREEK
1.42 MI NORTH OF US 84, De Soto, LA
Built 1975 Load: 37.6 t ADT: 3,931
COUNTRY RD
FairOver: GARRETT CREEK
1.0 MILES WEST OF US 167, Jackson, LA
Built 2010 Load: 37.6 t ADT: 920
TOPSY BEL RD
FairOver: LITTLE MARSH BAYOU
5.6 MI SOUTH OF US 190, Allen, LA
Built 2000 Load: 37.6 t ADT: 925
N SEVENTH ST
FairOver: NORTH CREEK
0.2 MI N of W Beck Ave., Allen, LA
Built 1999 Load: 37.6 t ADT: 406
MAGNOLIA CHURCH RD
FairOver: BRUSHY CREEK
0.6 MI N of US 190, Beauregard, LA
Built 1986 Load: 37.6 t ADT: 160
LONGVILLE CHRCH RD
FairOver: HICKORY BRANCH
1.4 MI W of US 171, Beauregard, LA
Built 1984 Load: 37.6 t ADT: 610
GUM ISLAND RD
FairOver: SABINE CANAL
0.4 MI EAST OF LA 108, Calcasieu, LA
Built 1999 Load: 37.6 t ADT: 463
HECKER RD
FairOver: BAYOU SERPENT
2.2 MI NORTH OF LA 3059, Calcasieu, LA
Built 1999 Load: 37.6 t ADT: 574
OLD RIVER RD
FairOver: CANAL
2.8 MI NORTH OF LA 12, Calcasieu, LA
Built 1994 Load: 37.6 t ADT: 890
OLD RIVER RD
FairOver: BESS BRANCH
5.0 MI N of LA 12, Calcasieu, LA
Built 1999 Load: 37.6 t ADT: 400
GREEN ISLAND RD
FairOver: BEAR HEAD CREEK
2.1 MI EAST OF LA 109, Calcasieu, LA
Built 1997 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: GREEN ISLAND MARSH
05.24 MI. N. OF INT 78, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 125
GREEN ISLAND RD
FairOver: GREEN ISLAND MARSH
5.6 MI E of LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 150
GREEN ISLAND RD
FairOver: CREEK
1.9 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: CREEK
1.4 MI E OF LA109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: LONG MARSH CREEK
4.4 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: LONG MARSH CREEK RELIEF
4.4 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
GREEN ISLAND RD
FairOver: LEE MARSH CREEK
3.6 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 37.6 t ADT: 100
OAK ST
FairOver: BUXTON CREEK
0.1 MI N OF LA 12, Calcasieu, LA
Built 1991 Load: 37.6 t ADT: 160
BUCKLIN ROAD
FairOver: W.GRAND MARAIS BAYOU
1.7 MI W of LA 26, Jefferson Davis, LA
Built 1994 Load: 37.6 t ADT: 50
US0165
FairOver: UNION PACIFIC R/R
2 MI. S FROM JCT LA 847 &, Caldwell, LA
Built 2007 Load: 37.6 t ADT: 11,282
US0165
FairOver: UNION PACIFIC R/R
2 MI. S FROM JCT LA 847 &, Caldwell, LA
Built 2007 Load: 37.6 t ADT: 12,669
Commerce ST
FairOver: WICKLIFFE CREEK
0.6 MILES WEST OF US 61 O, West Feliciana, LA
Built 1959 Load: 37.6 t ADT: 754
LA0010
FairOver: VAUGHN CREEK
10.15 Mi E of US 61, West Feliciana, LA
Built 1959 Load: 37.6 t ADT: 2,392
Palmer Rd
FairOver: RODERICK CREEK
1 Mi E of La 42, Livingston, LA
Built 2004 Load: 37.6 t ADT: 250
LA0428
FairOver: INDUSTRY CANAL
.2 MI EAST OF LA 23, Jefferson, LA
Built 1975 Load: 37.9 t ADT: 28,244
Showing 4,551-4,600 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.