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
Hatfield--Projects
GoodOver: ASH SLOUGH
LOGMI 0.04 FR 001 TO ODE, Franklin, LA
Built 1994 Load: 50.2 t ADT: 2,000
I0010
GoodOver: GROUND
0.07 MILE SOUTH OF US 11, Orleans, LA
Built 2011 Load: 50.5 t ADT: 1,600
LA3194
GoodOver: MCCAIN CREEK
2.7 MI. E OF LA 173, Caddo, LA
Built 2003 Load: 50.5 t ADT: 10,018
LA0147
GoodOver: DUDGEMONA RELIEF
1.43 MI WEST OF US 167, Jackson, LA
Built 2003 Load: 50.5 t ADT: 3,480
FARMERVILLE ST
GoodOver: KANSAS CITY SOUTHERN
IN RUSTON FARMERVILLE ST., Lincoln, LA
Built 1987 Load: 50.5 t ADT: 700
US0061
GoodOver: BAKER CANAL
500 FEET SOUTH OF LA.964, East Baton Rouge, LA
Built 2016 Load: 50.5 t ADT: 9,721
LA3139
GoodOver: LA 3152 RAMPS A B D&E
.5 MI EAST OF LA 3154, Jefferson, LA
Built 1986 Load: 50.8 t ADT: 55,872
I0049
GoodOver: LA 511
I-49 OVER LA 511, Caddo, LA
Built 1993 Load: 50.8 t ADT: 28,142
I0020
GoodOver: I20;RAMP 2
.8 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 50.8 t ADT: 15,642
LA0001
GoodOver: MP RR
3.53 MI. N OF N JCT LA 8, Rapides, LA
Built 1994 Load: 50.8 t ADT: 748
I0110
GoodOver: KELVIN ST.
I-110 / HOLLYWOOD ST. INT, East Baton Rouge, LA
Built 1971 Load: 50.8 t ADT: 8,250
Mermentau Rd.
GoodOver: ANSELM COULEE
1.0 MI. S. OF LA 92, Lafayette, LA
Built 2013 Load: 50.9 t ADT: 119
US0190
GoodOver: US 71 OVERPASS
US 190 OVER US 71, St. Landry, LA
Built 2010 Load: 50.9 t ADT: 20,176
Grand Lakes Dr
GoodOver: BAYOU FOUNTAIN
.01 MI SW-HIGHLAND ROAD, East Baton Rouge, LA
Built 1999 Load: 50.9 t ADT: 1,562
Pate Rd
GoodOver: Selsers Creek
0.1 South of La 1067, Tangipahoa, LA
Built 2022 Load: 50.9 t ADT: 20
LA0010
GoodOver: Beaver Branch
1.70 Mi. East of LA 37, St. Helena, LA
Built 2017 Load: 51.2 t ADT: 1,514
LA0028
GoodOver: DRAIN
0.97 MI. WEST OF LA 3054, Rapides, LA
Built 1997 Load: 51.5 t ADT: 9,482
Sub Regional Parkw
GoodOver: Drainage Creek
1.42 MI E of LA 467, Vernon, LA
Built 2021 Load: 51.5 t ADT: 200
Rodeo Rd
GoodOver: CREEK
0.2 MI W OF LA 133, Caldwell, LA
Built 1986 Load: 51.5 t ADT: 480
I0049
GoodOver: LA 106
INT. I-49 NORTH & LA 106, Avoyelles, LA
Built 1986 Load: 51.7 t ADT: 19,302
I0049
GoodOver: LA 106
INT. I-49 @ LA 106, Avoyelles, LA
Built 1986 Load: 51.7 t ADT: 10,352
I0049
GoodOver: HYNSON BAYOU
2.23 MI. NORTH OF LA 3250, Rapides, LA
Built 1990 Load: 51.7 t ADT: 15,642
I0110
GoodOver: CANAL
0.3 M N of US 61, East Baton Rouge, LA
Built 1976 Load: 51.7 t ADT: 8,250
I0110
GoodOver: CANAL
0.3 M N of I-110&US 61, East Baton Rouge, LA
Built 1976 Load: 51.7 t ADT: 16,229
Comite Dr
GoodOver: COMITE RIVER
1.8 M S of LA 410&LA 408, East Baton Rouge, LA
Built 2006 Load: 51.7 t
LA0157
GoodOver: FOX SKIN BAYOU
1.5 MI N. ON LA 527, Bossier, LA
Built 2015 Load: 51.8 t ADT: 1,211
WAGGONER AVE
GoodOver: BRUSH BAYOU
0.1 MI WEST OF US 171, Caddo, LA
Built 1990 Load: 51.8 t ADT: 652
Sub Regional Parkw
GoodOver: Drainage Creek
1.42 MI E of LA 467, Vernon, LA
Built 2021 Load: 51.8 t ADT: 200
Sub Regional Parkw
GoodOver: Liberty Creek
0.1 Mi S of LA 468, Vernon, LA
Built 2021 Load: 51.8 t ADT: 200
LA3201
GoodOver: TURKEY CREEK
01.26 MILES EAST OF LA.4, Franklin, LA
Built 2015 Load: 51.8 t ADT: 3,772
Bayou Crab Rd
GoodOver: Norman Canal
0.8 Mi. E. of LA 401, Assumption, LA
Built 2022 Load: 51.8 t ADT: 316
I-10 Service Rd
GoodOver: Reine Canal
0.50 Mi. N. of US 190, St. Tammany, LA
Built 2021 Load: 51.8 t ADT: 900
LA0443
GoodOver: Tangipahoa River
1.0 MI. NE of LA. 1064, Tangipahoa, LA
Built 2017 Load: 51.8 t ADT: 6,478
30TH STREET
GoodOver: DUNCAN CANAL
1.2 MI E OF LOYOLA AVENUE, Jefferson, LA
Built 1999 Load: 52.2 t
S. AVENUE F
GoodOver: BAYOU BLANC
0.7 MI. S. OF US 90, Acadia, LA
Built 2016 Load: 52.2 t ADT: 2,112
US0090
GoodOver: Albertsons Pkwy
0.75 Miles N. of La 182, Lafayette, LA
Built 2018 Load: 52.2 t ADT: 62,432
LA1054
GoodOver: BIG CREEK RELIEF
1.16 MI N OF LA 1061, Tangipahoa, LA
Built 2017 Load: 52.2 t ADT: 1,264
LA0442
GoodOver: TANGIPAHOA RIVER
3.45 MI. E. OF US 51, Tangipahoa, LA
Built 2019 Load: 52.2 t ADT: 1,762
I0210
GoodOver: COVE LANE
1.0 MI W of LA 1138-2, Calcasieu, LA
Built 2015 Load: 52.5 t ADT: 58,320
I0010
GoodOver: ON RAMP I-10W FROM US90
.2 MI EAST OF US 90, Orleans, LA
Built 1967 Load: 52.6 t ADT: 7,620
LA0008
GoodOver: I-49
I-49 / LA 8 INTG., Rapides, LA
Built 1984 Load: 52.6 t ADT: 1,482
LA0015
GoodOver: ASH SLOUGH
0.75 M S of LA 867, Franklin, LA
Built 1988 Load: 52.6 t ADT: 6,896
Beco Rd
GoodOver: NEW RIVER CANAL
0.63 MI. N OF LA 22, Ascension, LA
Built 1998 Load: 52.6 t ADT: 500
LA0847
GoodOver: BAYOU LAFOURCHE CUTOFF
1.1 MI W OF LA 133, Caldwell, LA
Built 2018 Load: 52.8 t ADT: 438
THE GROVE BLVD
GoodOver: WARD CREEK
0.2 Mi. W. of I-10, East Baton Rouge, LA
Built 2019 Load: 52.8 t ADT: 450
POLK ST
GoodOver: LITTLE BAYOU BLACK
0.01 MI S of LA 311, Terrebonne, LA
Built 2020 Load: 53.1 t ADT: 3,645
OLD SPANISH TRAIL
GoodOver: K.C.S.R.R. VERDINE BAYOU
3.4 MI E of LA 27, Calcasieu, LA
Built 2017 Load: 53.1 t ADT: 6,353
CHEVELLE DR
GoodOver: W BRANCH N FORK WARD CR
0.40 MI N OF LA 426, East Baton Rouge, LA
Built 2023 Load: 53.1 t ADT: 2,505
FIELD ACCESS
GoodOver: COULEE DES GRUES
SEC 25 T2N R3E, Avoyelles, LA
Built 1997 Load: 53.5 t ADT: 5
US0061
GoodOver: SONI DRAIN CANAL
0.10 MI. WEST OF 3154, Jefferson, LA
Built 1996 Load: 53.5 t ADT: 21,574
Showing 10,901-10,950 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.