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
US0171
GoodOver: BEAR CREEK
3.96 MI. NORTH OF LA 174, Sabine, LA
Built 2006 Load: 46.3 t ADT: 4,790
LA0121
GoodOver: CREEK
3.75 MI S OF LA 28, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,932
LA0121
GoodOver: FLOCTAW CREEK
3.7 MI S OF LA 28, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,932
LA0121
GoodOver: CLEAR RUNNER BRANCH
4.1 MI S OF LA 28, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,932
LA0121
GoodOver: CREEK
1.53 MI E OF LA 8, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,700
LA0121
GoodOver: CREEK
3.9 MI S OF LA 28, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,932
LA0121
GoodOver: BURTON CREEK
2.32 MI E OF LA 8, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,700
LA0121
GoodOver: CREEK
3.52 MI E OF LA 8, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,700
WELCOME CEM RD
GoodOver: MENACE CREEK
0.4 M E OF LA 465, Vernon, LA
Built 2018 Load: 46.3 t ADT: 150
LA1236
GoodOver: LITTLE KIESCHE CREEK
1.33 MI W OF LA 34, Winn, LA
Built 2016 Load: 46.3 t ADT: 825
LA1236
GoodOver: KIESCHE CREEK
0.34 MI W OF LA 34, Winn, LA
Built 2016 Load: 46.3 t ADT: 825
LA1236
GoodOver: UNNAMED CREEK
2.85 MILES EAST OF US 167, Winn, LA
Built 2015 Load: 46.3 t ADT: 825
LA1236
GoodOver: BRUSHY CREEK
0.09 MILES EAST OF US 167, Winn, LA
Built 2014 Load: 46.3 t ADT: 825
LA0034
GoodOver: REDLAND CREEK
0.6 MI N OF LA 471, Winn, LA
Built 2016 Load: 46.3 t ADT: 1,219
LA0034
GoodOver: IATT CREEK
0.2 MI E OF LA 471, Winn, LA
Built 2016 Load: 46.3 t ADT: 965
HESTER RD
GoodOver: PINEY CREEK
2.97 MILES S OF LA.126, Caldwell, LA
Built 2016 Load: 46.3 t ADT: 75
Amyx Gravel Pit Rd
GoodOver: SALEM CREEK
1.8 MI N of LA 772, Catahoula, LA
Built 2015 Load: 46.3 t ADT: 100
LA0124
GoodOver: HOOTER CREEK
2.9 MI E OF LA 126, Catahoula, LA
Built 2022 Load: 46.3 t ADT: 117
Jeremy Rd
GoodOver: FUNNY LOUIS BAYOU
0.8 MILES WEST OF LA.503, LaSalle, LA
Built 2015 Load: 46.3 t ADT: 225
Sulphur Springs Rd
GoodOver: HORSEPEN Cr
0.9 MI N OF LA.127, LaSalle, LA
Built 2016 Load: 46.3 t ADT: 348
LA0004
GoodOver: MOUND BAYOU
0.8 MI NORTH OF LA 128, Tensas, LA
Built 1967 Load: 46.3 t ADT: 618
LA1012
GoodOver: HIMALAYA CANAL
1.5 MILES SOUTH OF LA 101, Assumption, LA
Built 2014 Load: 46.3 t ADT: 96
US0090
GoodOver: DRAIN
0.2 MI E of LA 662, Assumption, LA
Built 2006 Load: 46.3 t ADT: 3,440
LA0182
GoodOver: BAYOU CAROLINE
0.7 Miles E of US90 Bus, Assumption, LA
Built 2006 Load: 46.3 t ADT: 3,905
LA0182
GoodOver: ALLIGATOR BAYOU
1.3 MI E of US 90 BUS, Assumption, LA
Built 2006 Load: 46.3 t ADT: 3,905
LA0182
GoodOver: ALLIGATOR BAYOU RELIEF
1.3 Miles W of LA 662, Assumption, LA
Built 2006 Load: 46.3 t ADT: 3,905
DENHAM RD
GoodOver: BEAVER BAYOU
1.6 M W OF LA 37, East Baton Rouge, LA
Built 2019 Load: 46.3 t ADT: 4,616
TUCKER RD
GoodOver: DRAINAGE BAYOU
0.3 M N OF LA 64, East Baton Rouge, LA
Built 2019 Load: 46.3 t ADT: 1,723
DYER RD.
GoodOver: BLACKWATER BAYOU
2.5 MI E OF LA 67, East Baton Rouge, LA
Built 2019 Load: 46.3 t ADT: 2,000
LA0410
GoodOver: BLACK WATER BAYOU
5.2 MILES NORTH OF LA.408, East Baton Rouge, LA
Built 2016 Load: 46.3 t ADT: 3,664
New Rafe Mayer Rd
GoodOver: ASH SLOUGH
0.22 MI E OF LA.19, East Baton Rouge, LA
Built 2016 Load: 46.3 t ADT: 3,175
PEA RIDGE RD
GoodOver: TURKEY CREEK
.75 MI SOUTH OF LA 442, Livingston, LA
Built 2018 Load: 46.3 t ADT: 705
LA1042
GoodOver: Twelve Mile Creek
2.5 Mi W of La 37, St. Helena, LA
Built 2020 Load: 46.3 t ADT: 1,316
LA0440
GoodOver: CREEK
0.1 MILE WEST OF LA 1061, Tangipahoa, LA
Built 2013 Load: 46.3 t ADT: 752
LA1054
GoodOver: BIG CREEK
2.76 MI N OF LA 10, Tangipahoa, LA
Built 2018 Load: 46.3 t ADT: 1,159
North River Rd
GoodOver: Ashley Branch
1.4 mi. south of la 38, Tangipahoa, LA
Built 2018 Load: 46.3 t ADT: 218
I0055
GoodOver: SOUTH SLOUGH
8.9 MI N. OF PARISH LINE, Tangipahoa, LA
Built 2005 Load: 46.3 t ADT: 17,665
Pleasant Hill Road
GoodOver: Little Silver Creek
1.18 Mi. N. of LA 1056, Washington, LA
Built 2019 Load: 46.3 t ADT: 310
LA0010
GoodOver: LAWRENCE CREEK
2.46 MILES EAST OF LA 16, Washington, LA
Built 2014 Load: 46.3 t ADT: 10,686
Gallo Rd
GoodOver: 20 ARPENT CANAL
0.7 MI N OF LA 39, St. Bernard, LA
Built 2019 Load: 46.7 t ADT: 700
Shed Rd
GoodOver: FLAT RIVER BAYOU
1.5 MILES NORTH OF US 80, Bossier, LA
Built 2001 Load: 46.7 t ADT: 9,854
Blade Loop
GoodOver: RHINEHART CREEK
LOG MI 2.71 FR 339 TO 348, LaSalle, LA
Built 2002 Load: 46.7 t ADT: 350
Lemon Rd
GoodOver: REDWOOD CREEK
1.4 MI W OF LA 67, East Baton Rouge, LA
Built 2017 Load: 46.7 t ADT: 264
SARASOTA DR.
GoodOver: ENGRS. DEPOT CANAL
0.3 MI S OF LA 37, East Baton Rouge, LA
Built 2023 Load: 46.7 t ADT: 726
Caroll St
GoodOver: Black Bayou
0.1 Mi. S. of LA 20, Terrebonne, LA
Built 2020 Load: 47.0 t ADT: 1,929
BULL ISLAND RD
GoodOver: PARC PERDUE BAYOU
2.4 MI. E. OF LA 682, Iberia, LA
Built 2016 Load: 47.0 t ADT: 1,105
I0049
GoodOver: TRINITY BAYOU
0.22 M. N. OF LA 169, Caddo, LA
Built 2013 Load: 47.0 t ADT: 8,115
US0167
GoodOver: CORNEY BAYOU
2.25 MI. SOUTH OF LA 15, Union, LA
Built 2012 Load: 47.0 t ADT: 422
FARM ROAD
GoodOver: SABINE CANAL
0.9 MI E OF LA 397, Calcasieu, LA
Built 2022 Load: 47.0 t ADT: 38
US 61
GoodOver: Thompson Cr
1.9 Mi. S. of LA 10, West Feliciana, LA
Built 2022 Load: 47.0 t ADT: 13,861
Showing 10,751-10,800 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.