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
I0010
FairOver: LA 433
1.6 MI S OF US 190, St. Tammany, LA
Built 1966 Load: 39.9 t ADT: 1,600
LA0040
FairOver: LA 40 OVER I-55
LA0040, Tangipahoa, LA
Built 1970 Load: 39.9 t ADT: 8,581
I0055-S
FairOver: OWL BAYOU
Owl Bayou, Tangipahoa, LA
Built 1958 Load: 39.9 t ADT: 4,107
I0055
FairOver: LITTLE NAT RIVER
I0055, Tangipahoa, LA
Built 1968 Load: 39.9 t ADT: 21,736
I0012
FairOver: SELSERS CREEK
I0012, Tangipahoa, LA
Built 1975 Load: 39.9 t ADT: 53,386
I0012
FairOver: SELSERS CREEK
I0012, Tangipahoa, LA
Built 1975 Load: 39.9 t ADT: 17,665
LYNNETTE DR.
FairOver: SONIAT CANAL
0.02 MI E OF VEGAS DR., Jefferson, LA
Built 2004 Load: 40.2 t
Chemin Metairie
FairOver: Parc Perdu Bayou
0.50 Mi W of La 89, Lafayette, LA
Built 2008 Load: 40.2 t ADT: 2,336
Keithvil-Kingston
FairOver: CYPRESS BAYOU
1.7 MILES EAST OF US 171, Caddo, LA
Built 2007 Load: 40.2 t ADT: 100
Penal Farm Rd
FairOver: COOLEY BRANCH
0.4M EAST OF LA 7, Webster, LA
Built 1992 Load: 40.2 t ADT: 1,294
SILOAM CHURCH RD
FairOver: BIG CREEK
1.5 MI EAST of LA 809, Jackson, LA
Built 1986 Load: 40.2 t ADT: 48
Prince Rd
FairOver: BIG COLEWA BAYOU
1.8 MI E of LA 585, West Carroll, LA
Built 1992 Load: 40.2 t ADT: 376
TROSCLAIR RD.
FairOver: CREOLE CANAL
.01 MI W of LA 82, Cameron, LA
Built 2006 Load: 40.2 t ADT: 334
Booker Fowler Rd
FairOver: INDIAN CREEK
1.29 MILES SE OF US 165, Rapides, LA
Built 2005 Load: 40.2 t ADT: 150
Rogers Rd
FairOver: YELLOW WATER RIVER
0.3 N OF US 190 & I-55 ON, Tangipahoa, LA
Built 1998 Load: 40.2 t ADT: 1,372
W. Black cat Rd
FairOver: PONCHATOULA CREEK
BLACK CAT ROAD, Tangipahoa, LA
Built 1992 Load: 40.2 t ADT: 873
LA0010
FairOver: TCHEFUNCTE RIVER
1 MILE WEST OF LA 450, Washington, LA
Built 2012 Load: 40.2 t ADT: 1,333
Fire Tower Rd
FairOver: NEAR CREEK
0.6 MI. S. OF HWY. 2, Webster, LA
Built 1985 Load: 40.5 t ADT: 525
Fire Tower Rd
FairOver: INDIAN CREEK
0.5 MI. S. OF HWY. 2, Webster, LA
Built 1985 Load: 40.5 t ADT: 525
Fire Tower Rd
FairOver: INDIAN CREEK
0.4 MI. S. OF HWY 2, Webster, LA
Built 1985 Load: 40.5 t ADT: 525
US 167
FairOver: CREEK
1.0 Mi. N. of LA 148, Jackson, LA
Built 2008 Load: 40.5 t ADT: 8,681
EAGLE DR
FairOver: I-20
0.7 MI E OF US 167, Lincoln, LA
Built 2008 Load: 40.5 t ADT: 37,600
Skinner Ln
FairOver: LYON BAYOU
1.0 MI W of LA 589, West Carroll, LA
Built 1990 Load: 40.5 t ADT: 951
TROUSDALE RD
FairOver: BAYOU VERDINE
0.8 MI N of US 90, Calcasieu, LA
Built 1996 Load: 40.5 t ADT: 2,938
I0010
FairOver: I-10 OVER LA 30
I0010, Ascension, LA
Built 1975 Load: 40.5 t ADT: 60,802
I0010
FairOver: I-10 OVER LA 30
I0010, Ascension, LA
Built 1975 Load: 40.5 t ADT: 25,735
New River Canal Rd
FairOver: DRAINAGE BAYOU
1.3 MI. S. DUTCHTOWN, Ascension, LA
Built 2001 Load: 40.5 t ADT: 100
I0010
FairOver: LA 30 & CITY STREETS
0.5 M SW of I-110&LA 73, East Baton Rouge, LA
Built 1967 Load: 40.5 t ADT: 197,070
US0090-B
FairOver: US 90 HOWARD AVE RR
0.5 MI SOUTH OF I-10, Orleans, LA
Built 1960 Load: 40.8 t ADT: 7,620
US0090
FairOver: US 90 HOWARD AVE RAMPS
0.1 MI NW OF US 90, Orleans, LA
Built 1960 Load: 40.8 t ADT: 7,620
US0090-B
FairOver: CITY STREETS
0.6 MI E OF US 90B, Orleans, LA
Built 1960 Load: 40.8 t ADT: 7,620
US0090
FairOver: US-90 SERVICE ROAD
2.24 MI SOUTH OF MISS. RI, Orleans, LA
Built 1989 Load: 40.8 t ADT: 15,955
I0610
FairOver: ORLEANS AVE/OUTFALL CANA
1.2 MI EAST OF I-10, Orleans, LA
Built 1973 Load: 40.8 t ADT: 105,572
DWYER RD
FairOver: I-510
0.55M NORTH OF US 90, Orleans, LA
Built 1992 Load: 40.8 t ADT: 17,100
I0010
FairOver: CITY STREETS
.37 MI EAST OF US 90, Orleans, LA
Built 1960 Load: 40.8 t ADT: 5,927
I0010
FairOver: CITY STREETS
.9 MI EAST OF US 90, Orleans, LA
Built 1968 Load: 40.8 t ADT: 12,240
I0010
FairOver: ST. BERNARD AVE OFF RAMP
2.3 MI EAST OF US 90, Orleans, LA
Built 1968 Load: 40.8 t ADT: 17,605
I0010
FairOver: DRAIN CANAL
6.8 MI EAST OF I-510, Orleans, LA
Built 1967 Load: 40.8 t ADT: 77,962
LA0046
FairOver: BAYOU LALOUTRE
5.4 MI SOUTH OF LA 1245, St. Bernard, LA
Built 1984 Load: 40.8 t ADT: 2,553
LA0306
FairOver: GRAND BAYOU
2.0 MI SOUTH OF LA 632, St. Charles, LA
Built 1984 Load: 40.8 t ADT: 370
LA0095
FairOver: DRAINAGE CANAL
2.82 MI NORTH OF LA 35, Acadia, LA
Built 1984 Load: 40.8 t ADT: 1,664
I0010-E
FairOver: LA 35
5.7 Mi E of LA 1111, Acadia, LA
Built 1966 Load: 40.8 t ADT: 28,557
I0010-W
FairOver: LA 35
4.6 Mi W of LA 95, Acadia, LA
Built 1966 Load: 40.8 t ADT: 28,557
LA1101
FairOver: BAYOU WIKOFF
1.7 Mi NW of LA 98, Acadia, LA
Built 1984 Load: 40.8 t ADT: 180
I0049
FairOver: DRAINAGE CANAL
3.1 MI SOUTH OF LA 106, Evangeline, LA
Built 1986 Load: 40.8 t ADT: 19,966
LA0376
FairOver: Relief for Bayou Nepique
7.0 MI WEST OF LA 13, Evangeline, LA
Built 1994 Load: 40.8 t ADT: 104
Consolidated Dr.
FairOver: DRAINAGE
0.04 Mi E. of Tideland Rd, Lafayette, LA
Built 1999 Load: 40.8 t ADT: 1,769
US0167
FairOver: COULEE ILE DES CANNES
0.9 MI NORTH OF LA 92, Lafayette, LA
Built 1984 Load: 40.8 t ADT: 8,985
US0167
FairOver: COULEE ILE DES CANNES
2.54 Mi SW of LA 733, Lafayette, LA
Built 1984 Load: 40.8 t ADT: 34,104
US0190
FairOver: UPRR
0.4 MI EAST OF I-49, St. Landry, LA
Built 1951 Load: 40.8 t ADT: 21,939
Showing 5,151-5,200 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.