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
LA0019
FairOver: BAYOU
2.3 M NE of LA 19&US 61, East Baton Rouge, LA
Built 1977 Load: 45.4 t ADT: 22,663
I0010
FairOver: CITY STREETS
I0010, East Baton Rouge, LA
Built 1967 Load: 45.4 t ADT: 17,282
I0010
FairOver: LA 1/M P RR/LOC RD
1.9 M E of LA 415, West Baton Rouge, LA
Built 1968 Load: 45.4 t ADT: 4,035
I0010
FairOver: HOPE CANAL
I0010, St. John the Baptist, LA
Built 1975 Load: 45.4 t ADT: 44,074
I0010
FairOver: HOPE CANAL
I0010, St. John the Baptist, LA
Built 1975 Load: 45.4 t ADT: 27,551
I0010
FairOver: MISSISSIPPI BAYOU
I0010, St. John the Baptist, LA
Built 1975 Load: 45.4 t ADT: 44,074
I0010
FairOver: MISSISSIPPI BAYOU
I0010, St. John the Baptist, LA
Built 1975 Load: 45.4 t ADT: 27,551
Town Center Pkwy.
FairOver: SCHNEIDER CANAL
ON TOWN CENTER PKWY 0.80, St. Tammany, LA
Built 2015 Load: 45.4 t ADT: 1,000
I0055
FairOver: YELLOW WATER RIVER
I0055, Tangipahoa, LA
Built 1968 Load: 45.4 t ADT: 21,736
SILVER CROSS RD
FairOver: WALNUT BAYOU
0.08 MI SW of US 80, Madison, LA
Built 2007 Load: 45.7 t ADT: 60
WASHINGTON ST
FairOver: YOUNGS BAYOU
WASHINGTON ST. MONRO, Ouachita, LA
Built 1972 Load: 45.7 t ADT: 2,000
US0080
FairOver: LAFOURCHE BAYOU
3.6 MI W OF LA 133, Richland, LA
Built 2017 Load: 45.7 t ADT: 2,747
Wade Rd
FairOver: BAYOU BIG COLENA
2MI. NTH. HWY. 134, West Carroll, LA
Built 1983 Load: 45.7 t ADT: 328
LA0113
FairOver: NORTH FORK DRY CREEK
0.5 MI S of LA 394, Beauregard, LA
Built 2005 Load: 45.7 t ADT: 1,806
OCHSNER BOULEVARD
FairOver: TIMBER BRANCH
1.5 MI.NORTHWEST OF LA.21, St. Tammany, LA
Built 2010 Load: 45.7 t ADT: 6,295
LA0537
FairOver: STILLHOUSE BAYOU
2.7 MI NORTH OF LA 2, Bossier, LA
Built 2011 Load: 46.0 t ADT: 21
MANUEL ROAD
FairOver: SERPENT BAYOU
1.6 MI N of LA 102, Jefferson Davis, LA
Built 2017 Load: 46.0 t ADT: 150
LA1088
FairOver: CANE BAYOU
1.7 M E OF I-12, St. Tammany, LA
Built 1974 Load: 46.0 t ADT: 9,722
LA0428
FairOver: DONNER CANAL
3.18 MI EAST OF JEFF. PAR, Orleans, LA
Built 1975 Load: 46.3 t ADT: 7,178
I0010
FairOver: JAHNCKE CANAL
4.8 MI EAST OF US 90, Orleans, LA
Built 1972 Load: 46.3 t ADT: 77,962
I0010
FairOver: JAHNCKE CANAL
4.8 MI EAST OF US 90, Orleans, LA
Built 1972 Load: 46.3 t ADT: 1,600
I0010
FairOver: JAHNCKE CANAL
4.8 MI EAST OF US 90, Orleans, LA
Built 1972 Load: 46.3 t ADT: 4,380
I0010
FairOver: JAHNCKE CANAL
4.8 MI EAST OF US 90, Orleans, LA
Built 1972 Load: 46.3 t ADT: 4,707
LA3017
FairOver: DRAIN CANAL
1.6 MI WEST OF LA 23, Plaquemines, LA
Built 1997 Load: 46.3 t ADT: 22,518
I0049
FairOver: BAYOU CALLAHAN
0.9 MILES N OF LA 3233, St. Landry, LA
Built 1982 Load: 46.3 t ADT: 4,002
US0171
FairOver: SOUTH BRUSH BAYOU
1.2 MI. N. OF LA 3132, Caddo, LA
Built 1976 Load: 46.3 t ADT: 17,212
BEAR KNOLL RD
FairOver: DUGDEMONA RIVER
2.7 MI. NNE INT. 300, Jackson, LA
Built 1983 Load: 46.3 t ADT: 410
I0020
FairOver: CYPRESS BAYOU BRIDGE
.7 MI EAST OF EAST INT OF, Madison, LA
Built 1975 Load: 46.3 t ADT: 28,276
LA0034
FairOver: BAYOU BLACK
6.39 MI EAST OF LA 546, Ouachita, LA
Built 1953 Load: 46.3 t ADT: 17,751
LA0133
FairOver: LA 133 OVER I-20
LA 133 OVER I-20, Richland, LA
Built 1968 Load: 46.3 t ADT: 867
LA0033
FairOver: CECIL CREEK
5.3 MI N of LA 143, Union, LA
Built 1996 Load: 46.3 t ADT: 1,200
LA0002
FairOver: BOEUF RIVER
2.1 MI WEST OF LA 585, West Carroll, LA
Built 1978 Load: 46.3 t ADT: 2,159
US0165-B
FairOver: BAYOU BLUE TRIBUTARY
0.7 MI SOUTH OF LA 26, Allen, LA
Built 2002 Load: 46.3 t ADT: 8,809
MARCANTEL RD
FairOver: BUXTON CREEK
0.2 MI N of ARTHUR MARCAN, Calcasieu, LA
Built 2019 Load: 46.3 t ADT: 216
RIVER RD
FairOver: CREEK
5.12 MI E OF LA 3059, Calcasieu, LA
Built 2018 Load: 46.3 t ADT: 246
US0165
FairOver: BIG CREEK
0.76 MILES NORTH OF LA 8, Grant, LA
Built 2006 Load: 46.3 t ADT: 6,586
LA0392
FairOver: BAYOU TORO
2.8 MI WEST OF LA 111, Vernon, LA
Built 1965 Load: 46.3 t ADT: 688
LA0124
FairOver: BUSHLEY BAYOU
1.6 MI SOUTH OF LA 8, Catahoula, LA
Built 1998 Load: 46.3 t ADT: 2,659
LA0070-S
FairOver: BAYOU LAFOURCHE
0.04 M N of LA 1&LA 70-S, Assumption, LA
Built 1977 Load: 46.3 t ADT: 8,101
LA0067
FairOver: COMITE RIVER
1.8 Mi N of LA 412, East Feliciana, LA
Built 1965 Load: 46.3 t ADT: 5,772
LA0440
FairOver: CREEK
2.0 MILES WEST OF LA 1061, Tangipahoa, LA
Built 2014 Load: 46.3 t ADT: 752
Airline Dr
FairOver: Flat River
5.0 MI NORTH OF LA 3105, Bossier, LA
Built 1985 Load: 46.7 t ADT: 10,000
ADCOCK RD
FairOver: BOEUF RIVER
LOG MI 0.04 FR 485 TO 557, Richland, LA
Built 1985 Load: 46.7 t ADT: 208
Turkey Cr Cut-off
FairOver: COCODRIE BAYOU
7.47 MILES SE OF US 165, Rapides, LA
Built 1984 Load: 46.7 t ADT: 250
Robinson Bridge Rd
FairOver: BAYOU BOEUF
0.02 MILE SOUTH OF LA 490, Rapides, LA
Built 1984 Load: 46.7 t ADT: 310
West Bradford St
FairOver: WEST HEMPHILL CREEK
0.2 MILES WEST OF LA 8, LaSalle, LA
Built 1985 Load: 46.7 t ADT: 370
Fountain Young Rd
FairOver: CURTIS CREEK
0.5 MI W. OF LA 1041, St. Helena, LA
Built 1985 Load: 46.7 t ADT: 230
I0010
FairOver: DRAIN CANAL
2.1 MI EAST OF I-510, Orleans, LA
Built 1967 Load: 47.2 t ADT: 77,962
I0010
FairOver: DRAIN CANAL
2.1 MI EAST OF I-510, Orleans, LA
Built 1967 Load: 47.2 t ADT: 1,600
US0090
FairOver: LA00668
3.2 M SE OF LA 85, Iberia, LA
Built 2003 Load: 47.2 t ADT: 15,875
Showing 5,851-5,900 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.