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
Gallow Rd.
GoodOver: Drainage Canal
0.5 Mi NE of Belleau Rd, St. Landry, LA
Built 2017 Load: 46.0 t ADT: 100
US0090
GoodOver: LA 318
4.6 MI W OF LA 83, St. Mary, LA
Built 2017 Load: 46.0 t ADT: 10,080
US0090
GoodOver: LA 318
3.1 MI E OF LA 668, St. Mary, LA
Built 2017 Load: 46.0 t ADT: 8,073
Daniel St.
GoodOver: SALINE BAYOU
0.3 MI. E. OF LA 151, Bienville, LA
Built 2017 Load: 46.0 t ADT: 1,200
LA0612
GoodOver: RED CHUTE BAYOU
3.27 MI. E. OF US 71, Bossier, LA
Built 2016 Load: 46.0 t ADT: 8,332
BLANCHARD FURRH RD
GoodOver: CHOCTAW BAYOU
0.5 MI. W.OF LA 173, Caddo, LA
Built 2018 Load: 46.0 t ADT: 160
Zoar Rd
GoodOver: Indian Cr
1.8 Mi. W. of LA 149, Jackson, LA
Built 2018 Load: 46.0 t ADT: 25
Vernon-Eros Rd
GoodOver: Colston Cr
4.7 Mi. W. of LA 146, Jackson, LA
Built 2019 Load: 46.0 t ADT: 50
TARBUTTON ROAD
GoodOver: 1-20
0.04 MI. N. OF LA 150, Lincoln, LA
Built 2019 Load: 46.0 t ADT: 4,475
LA3033
GoodOver: CREEK
3.06 MILES NORTH OF LA 34, Ouachita, LA
Built 2014 Load: 46.0 t ADT: 5,669
ELM ST
GoodOver: AIRPORT CANAL
0.9 MI E OF US 165, Ouachita, LA
Built 2016 Load: 46.0 t ADT: 850
LA 135
GoodOver: MUDDY BAYOU
1.7 MI. N. OF LA 576, Richland, LA
Built 2020 Load: 46.0 t ADT: 698
PARK RD
GoodOver: KINDER DITCH RELIEF
2.3 MI S OF LA 383, Allen, LA
Built 2018 Load: 46.0 t ADT: 377
PARK RD
GoodOver: KINDER DITCH
2.02 MI S OF LA 383, Allen, LA
Built 2018 Load: 46.0 t ADT: 377
5TH AVE
GoodOver: 5TH AVE DRAIN
0.2 MI N OF LA 3186, Calcasieu, LA
Built 2018 Load: 46.0 t ADT: 2,508
Rock Hill Road
GoodOver: Grays Creek
5.72 MI N of Jct US 71, Grant, LA
Built 2017 Load: 46.0 t ADT: 130
LA 120
GoodOver: Bayou Provencal
1.77 MI E of 117, Natchitoches, LA
Built 2020 Load: 46.0 t ADT: 665
LA0120
GoodOver: Creek
5.2 Mi E of LA 487, Natchitoches, LA
Built 2021 Load: 46.0 t ADT: 1,946
LA0120
GoodOver: Sand Creek
1.35 Mi E of LA 478, Natchitoches, LA
Built 2022 Load: 46.0 t ADT: 665
CLARK ROAD
GoodOver: B. BOURBEAUX
0.8 M N OF US 84, Natchitoches, LA
Built 2020 Load: 46.0 t ADT: 602
LA0121
GoodOver: MILL CREEK
4.3 MILES S.E. OF LA 489, Vernon, LA
Built 2016 Load: 46.0 t ADT: 1,932
Sulphur Springs Rd
GoodOver: HORSEPEN Cr
0.9 MI N OF LA.127, LaSalle, LA
Built 2016 Load: 46.0 t ADT: 412
Vesta Lane
GoodOver: SALEM CREEK
LOG MILE 0.34 FROM 380 TO, LaSalle, LA
Built 2007 Load: 46.0 t ADT: 100
LA0044
GoodOver: BLACK BAYOU
0.5 MI N OF LA 621, Ascension, LA
Built 2018 Load: 46.0 t ADT: 17,577
New Rafe Mayer Rd
GoodOver: DRAINAGE BAYOU
0.5 MI W OF LA.19, East Baton Rouge, LA
Built 2017 Load: 46.0 t ADT: 737
Derric Rd
GoodOver: NORMAN CANAL
0.3 MILES WEST OF TENANT, Iberville, LA
Built 2016 Load: 46.0 t ADT: 250
LEONARD CHAPEL RD
GoodOver: CREEK
.77 MI N. OF LA 40, St. Helena, LA
Built 2019 Load: 46.0 t ADT: 500
Williams Rd
GoodOver: Coffman Creek
0.2 Mi S of LA 16, St. Helena, LA
Built 2019 Load: 46.0 t ADT: 500
HAPPY TOWN ROAD
GoodOver: LITTLE ALABAMA BAYOU
SEC 111 T7S R8E, St. Martin, LA
Built 2001 Load: 46.3 t ADT: 30
Poplar St
GoodOver: BONNABEL CANAL
0.5 MI E OF CAUSEWAY BLVD, Jefferson, LA
Built 2015 Load: 46.3 t
LA0045
GoodOver: DRAIN CANAL
5.1 MI S OF LA 302, Jefferson, LA
Built 2018 Load: 46.3 t ADT: 6,709
US0090-B
GoodOver: GROUND
0.5 MI. S. OF I-10, Orleans, LA
Built 2016 Load: 46.3 t ADT: 7,620
US0090-B
GoodOver: CITY STREETS TRANSITRAM
1.97 MI SOUTH OF I-10, Orleans, LA
Built 1995 Load: 46.3 t ADT: 14,010
I0010
GoodOver: CITRUS CANAL RD.
3.1 MI EAST OF US 90, Orleans, LA
Built 1970 Load: 46.3 t ADT: 4,380
I0010
GoodOver: CITRUS CANAL RD.
3.1 MI EAST OF US 90, Orleans, LA
Built 1970 Load: 46.3 t ADT: 1,503
BARTOLO ST
GoodOver: 20 ARPENT CANAL
0.2 MI N OF LA 39, St. Bernard, LA
Built 2018 Load: 46.3 t ADT: 250
I0310
GoodOver: RAMP E
5.53 MI S JCT I-10, St. Charles, LA
Built 1980 Load: 46.3 t ADT: 15,642
LA0024
GoodOver: BAYOU TERREBONNE
02550650400321, Terrebonne, LA
Built 1978 Load: 46.3 t ADT: 3,919
LA0100
GoodOver: BAYOU POINTE AUX LOUPS
3.32 MI. EAST OF LA. 97, Acadia, LA
Built 1997 Load: 46.3 t ADT: 1,128
LA0095
GoodOver: BAYOU PLAQUEMINE
0.2 MI NORTH OF LA 35, Acadia, LA
Built 1993 Load: 46.3 t ADT: 1,664
LA3187
GoodOver: BOGGY BAYOU
1.5 Mi. West of LA 13., Evangeline, LA
Built 1992 Load: 46.3 t ADT: 295
Pellerin Rd
GoodOver: Delahoussaye Canal
0.1 M NW of LA 668, Iberia, LA
Built 2018 Load: 46.3 t ADT: 1,150
Canaan Rd
GoodOver: ANSELM COULEE
0.4 Mi E Kaliste Saloom, Lafayette, LA
Built 2010 Load: 46.3 t ADT: 172
Trappey Rd.
GoodOver: Drain
0.2 Mi. N of Kidder Road, Lafayette, LA
Built 1999 Load: 46.3 t ADT: 1,110
LA0104
GoodOver: BAYOU PLAQUEMINE BRULE
1.4 MI W. OF US 190, St. Landry, LA
Built 2013 Load: 46.3 t ADT: 2,158
LA0091
GoodOver: Drainage Canal
0.01 MI0. E0. of LA 757, St. Landry, LA
Built 2018 Load: 46.3 t ADT: 1,617
US0090
GoodOver: TEXAS GAS PIPELINE
6.4 Mi E of LA 182, St. Mary, LA
Built 1994 Load: 46.3 t ADT: 7,885
US0090
GoodOver: TEXAS GAS PIPELINE
2.27 Mi W of LA 662, St. Mary, LA
Built 1994 Load: 46.3 t ADT: 10,035
LA0082
GoodOver: LITTLE BAYOU
1.3 Mi. South of LA 690, Vermilion, LA
Built 2018 Load: 46.3 t ADT: 2,899
LA0035
GoodOver: COULEE DEJON
2.75 MI. S. OF LA14, Vermilion, LA
Built 2014 Load: 46.3 t ADT: 3,591
Showing 10,651-10,700 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.