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
Goodrich Rd
FairOver: ANDRE COULEE
0.6 Mi. W. of La 1120, Acadia, LA
Built 1993 Load: 44.4 t ADT: 288
PROVIDENCE ROAD
FairOver: TRIBUTARY TO BOGGY BAYOU
3.0 MI S OF LA 169, Caddo, LA
Built 2019 Load: 44.4 t ADT: 100
LINWOOD AVE.
FairOver: BOGGY BAYOU RELIEF
3.1 MI S OF LA 526, Caddo, LA
Built 2018 Load: 44.4 t ADT: 260
LA0014
FairOver: BAYOU LACASSINE
3.5 MI W of LA 99, Jefferson Davis, LA
Built 2013 Load: 44.4 t ADT: 1,108
Graces Crossing
FairOver: DRAINAGE DITCH
0.01 MI. EAST OF LA 1181, Avoyelles, LA
Built 1976 Load: 44.4 t ADT: 50
US0065
FairOver: CLARK BAYOU
2.2 MI NORTH OF LA 605, Tensas, LA
Built 1953 Load: 44.4 t ADT: 1,873
Gracie Ln
FairOver: LEVEE BARROW PIT
0.9 MI NW OF LA 75, Iberville, LA
Built 2017 Load: 44.4 t ADT: 681
LA0653
FairOver: DRAINAGE CANAL
4.25 MI EAST OF LA 182, Lafourche, LA
Built 2000 Load: 44.5 t ADT: 124
US0090-B
FairOver: S SERVICE RD/RAMP
0.05 MI E OF US 90B, Orleans, LA
Built 1960 Load: 44.5 t ADT: 7,620
I0010 ON-RAMP
FairOver: N. CLAIRBORNE AVE
1.56 MI EAST OF US 90, Orleans, LA
Built 1968 Load: 44.5 t ADT: 7,620
I0010
FairOver: AKDNRR & FRANKEL FARM RD
3.4 MI EAST LA 91, Acadia, LA
Built 1961 Load: 44.5 t ADT: 58,865
I0010
FairOver: AKDNRR & FRANKEL FARM RD
1.22 MI W of LA 13, Acadia, LA
Built 1961 Load: 44.5 t ADT: 1,471
I0010
FairOver: BAYOU PLAQUEMINE
3.9 MI EAST LA 91, Acadia, LA
Built 1961 Load: 44.5 t ADT: 58,865
I0010
FairOver: BAYOU PLAQUEMINE
.71 Mi W of LA 13, Acadia, LA
Built 1961 Load: 44.5 t ADT: 1,471
US0090
FairOver: RODERE CANAL
1.7 Mi W of LA 83, Iberia, LA
Built 1969 Load: 44.5 t ADT: 10,090
I0049
FairOver: LA 182
3.0 Mi N. of LA 726, Lafayette, LA
Built 1981 Load: 44.5 t ADT: 44,889
I0049
FairOver: LA 182
3.2 Miles S. of LA 182, Lafayette, LA
Built 1981 Load: 44.5 t ADT: 11,728
LA3147
FairOver: PIPELINE CANAL
9.0 MI S. OF LA 82, Vermilion, LA
Built 1982 Load: 44.5 t ADT: 221
LA3147
FairOver: OIL FIELD CANAL
8.82 MI S. OF LA 82, Vermilion, LA
Built 1982 Load: 44.5 t ADT: 221
I0020
FairOver: FLAT RIVER
0.5 MILES WEST OF I-220, Bossier, LA
Built 1973 Load: 44.5 t ADT: 59,076
US0171
FairOver: BOGGY BAYOU
2.6 MI. S. OF LA 526, Caddo, LA
Built 1953 Load: 44.5 t ADT: 16,911
LA0173
FairOver: SODA LAKE CANAL
1.94 M E OF JCT OF LA 1, Caddo, LA
Built 2000 Load: 44.5 t ADT: 713
MONKHOUSE DR
FairOver: I-20
1.0 MI EAST OF I-220, Caddo, LA
Built 1965 Load: 44.5 t ADT: 28,450
I0020
FairOver: US 80
3.14 MI WEST OF US 371, Webster, LA
Built 1975 Load: 44.5 t ADT: 25,379
I0020
FairOver: US 80
3.14 MI WEST OF US 371, Webster, LA
Built 1975 Load: 44.5 t ADT: 31,074
I0020
FairOver: BENNETT BAYOU
5.0 MI EAST OF US 165, Ouachita, LA
Built 1968 Load: 44.5 t ADT: 43,420
I0020
FairOver: DIVERSION CANAL
3.8 MI WEST OF LA 133, Richland, LA
Built 1968 Load: 44.5 t ADT: 16,997
I0020
FairOver: BEE BAYOU
3.1 MI EAST OF LA 137, Richland, LA
Built 1969 Load: 44.5 t ADT: 38,890
I0020
FairOver: BEE BAYOU
3.1 MI EAST OF LA 137, Richland, LA
Built 1969 Load: 44.5 t ADT: 16,997
I0020
FairOver: BIG CREEK
1.1 MI EAST OF LA 183, Richland, LA
Built 1971 Load: 44.5 t ADT: 38,890
I0020
FairOver: BIG CREEK
1.1 MI EAST OF LA 183, Richland, LA
Built 1971 Load: 44.5 t ADT: 16,997
I0020
FairOver: LITTLE CREEK
1.9 MI EAST OF LA 183, Richland, LA
Built 1971 Load: 44.5 t ADT: 38,890
I0020
FairOver: LITTLE CREEK
1.9 MI EAST OF LA 183, Richland, LA
Built 1971 Load: 44.5 t ADT: 16,997
I0020
FairOver: TURKEY CREEK
3.4 MI EAST OF LA 609, Richland, LA
Built 1970 Load: 44.5 t ADT: 38,890
I0020
FairOver: TURKEY CREEK
3.4 MI EAST OF LA 609, Richland, LA
Built 1970 Load: 44.5 t ADT: 16,997
LA0854
FairOver: LITTLE CREEK
4.8 MI E of LA 183, Richland, LA
Built 2002 Load: 44.5 t ADT: 529
LA0002
FairOver: CORNEY BAYOU
3.3 MI WEST OF LA 15, Union, LA
Built 1964 Load: 44.5 t ADT: 2,520
US0171
FairOver: SO. PAC RR
.1 MI NORTH OF US 90, Calcasieu, LA
Built 1994 Load: 44.5 t ADT: 19,234
LA0099
FairOver: EAST BAYOU LACASSINE BR.
.6 MI NORTH OF I-10, Jefferson Davis, LA
Built 2004 Load: 44.5 t ADT: 1,405
LA0099
FairOver: BR OVER BAYOU OFF B LAC.
0.9 MI N OF I-10, Jefferson Davis, LA
Built 2003 Load: 44.5 t ADT: 1,405
I0010
FairOver: I-10 OVER LA429/NEW RIVE
I0010, Ascension, LA
Built 1975 Load: 44.5 t ADT: 25,735
SIEGEN LN
FairOver: CLAY CUT BAYOU
2.2 MI SE I-12 US 61 JCT, East Baton Rouge, LA
Built 1984 Load: 44.5 t ADT: 38,982
I0012
FairOver: WEST COLYELL CR
I0012, Livingston, LA
Built 1970 Load: 44.5 t ADT: 77,469
I0012
FairOver: DUMPLIN CREEK
I0012, Livingston, LA
Built 1970 Load: 44.5 t ADT: 77,469
I0012
FairOver: MIDDLE COLYELL CREEK
I0012, Livingston, LA
Built 1970 Load: 44.5 t ADT: 77,469
I0012
FairOver: HORNSBY CREEK
I0012, Livingston, LA
Built 1969 Load: 44.5 t ADT: 78,208
I0012
FairOver: COLYELL CREEK
I0012, Livingston, LA
Built 1969 Load: 44.5 t ADT: 37,161
I0012
FairOver: BIG BRANCH
I0012, Livingston, LA
Built 1969 Load: 44.5 t ADT: 75,867
I0012
FairOver: BLOOD RIVER
I0012, Livingston, LA
Built 1968 Load: 44.5 t ADT: 74,180
I0012
FairOver: I-12 OVER I-59 SB
I0012, St. Tammany, LA
Built 1970 Load: 44.5 t ADT: 78,215
Showing 5,751-5,800 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.