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
US0090
FairOver: LA00668
US 90 OVER LA 668, Iberia, LA
Built 2003 Load: 47.2 t ADT: 10,865
LA0029
FairOver: Bayou Cocodrie
0.05 MI WEST OF I-49, St. Landry, LA
Built 1987 Load: 47.2 t ADT: 2,163
LA0009
FairOver: BEAVER CREEK
10.29MI NORTH OF LA 2 ALT, Claiborne, LA
Built 1953 Load: 47.2 t ADT: 1,775
I0020
FairOver: I20;RAMP 1
1.0 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 47.2 t ADT: 15,642
I0210
FairOver: OPELOUSAS STREET(LA 3020
.5 MI EAST OF US 90, Calcasieu, LA
Built 1977 Load: 47.2 t ADT: 608
LA0027
FairOver: FIRST BAYOU
2.1 MI N of LA 82, Cameron, LA
Built 1999 Load: 47.2 t ADT: 1,226
LA0027
FairOver: SECOND BAYOU
3.5 MI N of LA 82, Cameron, LA
Built 1999 Load: 47.2 t ADT: 1,226
I0049
FairOver: THOMPSON CREEK
0.16 MI. NORTH OF LA 174, Natchitoches, LA
Built 1985 Load: 47.2 t ADT: 28,142
I0010
FairOver: I-10 OVER LA 415-WESTOVE
I0010, West Baton Rouge, LA
Built 1969 Load: 47.2 t ADT: 80,618
LA0367
FairOver: GUM POINT GULLY
4.3 MI NORTH OF LA 1113, Acadia, LA
Built 1961 Load: 47.3 t ADT: 2,465
LA0015
FairOver: CREEK
3.5 MI NORTH OF LA 549, Union, LA
Built 1953 Load: 47.3 t ADT: 5,557
LA0399
FairOver: BR. OF WHISKEY CHITTO CR
2.72 MI. SOUTH OF LA 10, Vernon, LA
Built 2001 Load: 47.3 t ADT: 938
Ellerbe Rd
FairOver: ELLERBY RD. BAYOU PIERRE
270 FT SO INT LA 175, Caddo, LA
Built 1982 Load: 48.0 t ADT: 315
Leonard Rd
FairOver: LEONARD RD OVER BA PIERR
0.8 MI SW OF LA1 RT.#122, Caddo, LA
Built 1983 Load: 48.0 t ADT: 3,900
Sewage Disposal Rd
FairOver: BOONE CREEK
5.5 MI. SE OF US 80, Webster, LA
Built 1988 Load: 48.0 t ADT: 25
Java Rd
FairOver: CANEY BRANCH
4.0 MI SW OF US 80, Webster, LA
Built 1988 Load: 48.0 t ADT: 20
US0165
FairOver: LITTLE BAYOU
4.6 MI N of LA 101, Jefferson Davis, LA
Built 2017 Load: 48.0 t ADT: 9,883
LA0015
FairOver: OLD RIVER NAV. CANAL
LA0015, Pointe Coupee, LA
Built 1965 Load: 48.0 t ADT: 633
HOLLYSPRINGS EXT
FairOver: WHISKEY CHITTO CREEK
FORT POLK, Vernon, LA
Built 2007 Load: 48.0 t ADT: 120
MILL ROAD
FairOver: TENSAS RIVER
JUST W OF QUEBEC RD, Tensas, LA
Built 1987 Load: 48.1 t ADT: 50
CLEARY AVE
FairOver: I 10
4.4 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 48.1 t ADT: 50,050
LA0653
FairOver: LA 653 OVER US 90
LA 653 OVER US 90, Lafourche, LA
Built 1980 Load: 48.1 t ADT: 800
I0010
FairOver: CITY STREETS
2.5 MI EAST OF LA 39, Orleans, LA
Built 1966 Load: 48.1 t ADT: 1,600
I0010
FairOver: INNER HARBOR NAV CANAL
0.6 MI SW OF US 90, Orleans, LA
Built 1966 Load: 48.1 t ADT: 1,600
LA0112
FairOver: I-49
I-49/LA 112 INTG., Rapides, LA
Built 1989 Load: 48.1 t ADT: 2,304
I0010
FairOver: PANAMA CANAL
I0010, Ascension, LA
Built 1975 Load: 48.1 t ADT: 21,372
I0110
FairOver: N. BLVD. ON RAMP
0.2 Mi. S. of US 61, East Baton Rouge, LA
Built 1963 Load: 48.1 t ADT: 8,250
I0110
FairOver: Patking Lot
00.3 Mi. S. of US 61 Bus, East Baton Rouge, LA
Built 1963 Load: 48.1 t ADT: 2,653
I0110
FairOver: MAIN ST. ON RAMP
I0110, East Baton Rouge, LA
Built 1963 Load: 48.1 t ADT: 8,250
I0110
FairOver: LAUREL ST. OFF RAMP
I0110, East Baton Rouge, LA
Built 1963 Load: 48.1 t ADT: 8,250
LA0434
FairOver: I-12
2.6 MI N OF US 190, St. Tammany, LA
Built 1973 Load: 48.1 t ADT: 3,690
Gum Ridge Rd
FairOver: DRAINAGE DITCH
0.73 M. NE OF JCT LA 1, Avoyelles, LA
Built 1984 Load: 48.3 t ADT: 170
College Dr
FairOver: DAWSON CREEK
0.1 MI N of LA 427, East Baton Rouge, LA
Built 1968 Load: 48.3 t ADT: 49,656
Mixon Ln
FairOver: CREEK
1.0M NE OF JCT LA 1061&16, Tangipahoa, LA
Built 1993 Load: 48.3 t ADT: 6
505 ROAD
FairOver: ODOM CREEK
VE 812 723, Vernon, LA
Built 2005 Load: 48.3 t ADT: 40
OLSON DRIVE
FairOver: OUTFALL CANAL
1 KM S OF BACK GATE, Plaquemines, LA
Built 2003 Load: 48.6 t ADT: 1,000
MEADOW LANE
FairOver: BRUSHY BAYOU
0.22 MI W OF US 171, Caddo, LA
Built 1956 Load: 48.6 t ADT: 1,200
LA3127
FairOver: SAINT JAMES CANAL
4.6 M EAST OF LA 70&3127, St. James, LA
Built 1988 Load: 48.6 t ADT: 6,703
LA0440
FairOver: DRAIN
1.5 MI. EAST OF US 51, Tangipahoa, LA
Built 1988 Load: 48.6 t ADT: 2,498
LA1249
FairOver: PIPE AT CANAL
2.5 MI S. PUMPKIN C EXIT, Tangipahoa, LA
Built 1995 Load: 48.6 t ADT: 6,110
Tenneco Rd
FairOver: FIVE MILE RD. FIVEMILE
1.5 MI. S. OF LA. 2, Claiborne, LA
Built 1957 Load: 48.9 t ADT: 70
Adams Cemetery Rd
FairOver: BANISTER CREEK
0.5M W of LA 506, Caldwell, LA
Built 1988 Load: 48.9 t ADT: 90
Piat Rd.
FairOver: Parc Perdu Bayou
0.4 Mi E of La 89, Lafayette, LA
Built 1987 Load: 49.0 t ADT: 1,550
I0020
FairOver: BOONE CREEK
2.33 MI. W. OF LA 7, Webster, LA
Built 1961 Load: 49.0 t ADT: 25,379
LA0034
FairOver: CHENIERE CREEK RELIEF
3.18 MI EAST OF LA 546, Ouachita, LA
Built 1970 Load: 49.0 t ADT: 8,694
I0020
FairOver: I20;RAMP S1
1.4 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 49.0 t ADT: 15,642
I0020
FairOver: I20;RAMP N1
1.5 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 49.0 t ADT: 15,642
I0020
FairOver: I20;RAMP S2
1.6 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 49.0 t ADT: 15,642
I0049
FairOver: GROUND
NORTH I-49 / US 71 INTG., Rapides, LA
Built 1992 Load: 49.0 t ADT: 15,642
I0049
FairOver: LENA-FLATWOODS RD
4.68 MI. NORTH OF LA 8, Rapides, LA
Built 1987 Load: 49.0 t ADT: 11,969
Showing 5,901-5,950 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.