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
HODGE RD
FairOver: I-20
3.4 MI EAST OF EAST INT O, Madison, LA
Built 1976 Load: 34.5 t ADT: 2,021
LA0133
FairOver: DRAINAGE CANAL
1.6 MI NORTH OF LA 132, Richland, LA
Built 1976 Load: 34.5 t ADT: 975
LA0577
FairOver: LITTLE CREEK
4.2 MI EAST OF LA 585, West Carroll, LA
Built 1971 Load: 34.5 t ADT: 365
LA0389
FairOver: WINDHAM CREEK
.16 MI. E OF INT LA109, Beauregard, LA
Built 1959 Load: 34.5 t ADT: 1,749
LA0383
FairOver: I-10
LA 383 OVER I-10, Calcasieu, LA
Built 1964 Load: 34.5 t ADT: 677
I0210
FairOver: M P RR/KAYOUCHE COULEE
1.03 MI EAST OF LA 14, Calcasieu, LA
Built 1976 Load: 34.5 t ADT: 55,407
I0210
FairOver: M P RR/KAYOUCHE COULEE
1.03 MI EAST OF LA 14, Calcasieu, LA
Built 1976 Load: 34.5 t ADT: 608
LA0493
FairOver: BAYOU BREVELLE
.44 MI. E OF INT LA1, Natchitoches, LA
Built 1949 Load: 34.5 t ADT: 294
LA0001
FairOver: CHERRY CREEK
2.82 MI. N OF N INT LA8, Rapides, LA
Built 1963 Load: 34.5 t ADT: 748
I0049
FairOver: CITY STREETS UP RR
0.89 MI. SOUTH OF US 71, Rapides, LA
Built 1992 Load: 34.5 t ADT: 15,642
LA0118
FairOver: LEWING CREEK
1.85 MI. EAST OF US 171, Sabine, LA
Built 1977 Load: 34.5 t ADT: 1,471
LA0191
FairOver: WALL CREEK
1.3 MI SOUTH OF LA 474, Sabine, LA
Built 1976 Load: 34.5 t ADT: 2,785
LA0191
FairOver: NEGREET-CREEK
.05 MI NORTH OF LA 476, Sabine, LA
Built 1976 Load: 34.5 t ADT: 2,391
LA0191
FairOver: BAYOU LANANA
2.13 MI. NORTH OF LA 6, Sabine, LA
Built 1968 Load: 34.5 t ADT: 1,210
US0084
FairOver: FRENCH FORK
1.0 MI WEST OF LA 28, Catahoula, LA
Built 1968 Load: 34.5 t ADT: 2,293
LA0074
FairOver: I-10
1.9 Mi. E of LA 928, Ascension, LA
Built 1975 Load: 34.5 t ADT: 13,875
SPANISH TOWN RD
FairOver: I-110
1.1 M N of I-10&I-110, East Baton Rouge, LA
Built 1961 Load: 34.5 t ADT: 44,150
I0110
FairOver: LA 67-PLANK RD
2.0 M NE of I-10&I-110, East Baton Rouge, LA
Built 1968 Load: 34.5 t ADT: 44,500
I0110
FairOver: LA 67-PLANK RD
2.0 M NE of I-10&I-110, East Baton Rouge, LA
Built 1968 Load: 34.5 t ADT: 44,500
I0110
FairOver: WELLER OFF RAMP (S.B.)
I-110 / WELLER AVE. INTG., East Baton Rouge, LA
Built 1970 Load: 34.5 t ADT: 16,229
I0012
FairOver: I-12 OVER LA 1032
I0012, Livingston, LA
Built 1970 Load: 34.5 t ADT: 77,469
LA0010
FairOver: AMITE RIVER @ DARLINGTON
1.5 M W OF LA 38, St. Helena, LA
Built 1963 Load: 34.5 t ADT: 2,534
US0190
FairOver: ABITA RIVER
2.1 MILES NORTH OF I-12, St. Tammany, LA
Built 1975 Load: 34.5 t ADT: 45,574
US0190
FairOver: PONCHITOLAWA CR
US 190, St. Tammany, LA
Built 1976 Load: 34.5 t ADT: 4,005
I0059
FairOver: YELLOW BAYOU
I0059, St. Tammany, LA
Built 1962 Load: 34.5 t ADT: 36,841
LA0010
FairOver: TANGIPAHOA RIVER
0.7 Miles East of US 51, Tangipahoa, LA
Built 1966 Load: 34.5 t ADT: 3,768
I0012
FairOver: US 51 BUS.
I0012, Tangipahoa, LA
Built 1975 Load: 34.5 t ADT: 21,736
I0012
FairOver: ICG RAILROAD
I0010, Tangipahoa, LA
Built 1975 Load: 34.5 t ADT: 58,377
Roosevelt Mall Dr.
FairOver: CITY PARK LAGOON
0.0MIW.OF MUSEUM OF, Orleans, LA
Built 1939 Load: 34.7 t
LA0020
FairOver: DONNER CANAL
2.2 MI EAST OF LA 182, Terrebonne, LA
Built 1984 Load: 34.7 t ADT: 2,471
LA0013
FairOver: Prime Gully
.3 MI NORTH OF LA 1115, Acadia, LA
Built 1951 Load: 34.7 t ADT: 6,068
LA7281
FairOver: FRANCOIS COULEE
1.7 Mi S of La 98, Lafayette, LA
Built 1982 Load: 34.7 t ADT: 8,684
Dewey Marks Ln.
FairOver: Wauksha Bayou
0.2 Mi SW. of La 359, St. Landry, LA
Built 1994 Load: 34.7 t ADT: 50
I0010
FairOver: RAMP C. OFF RAMP
4.61 MI EAST OF LA 347, St. Martin, LA
Built 1971 Load: 34.7 t ADT: 932
5th St
FairOver: FRANKLIN CANAL
0.2 Mi N of Willow St., St. Mary, LA
Built 1960 Load: 34.7 t ADT: 300
Mott Rd
FairOver: Boggs Creek Trib
3.6 MI N OF INT. LA HWY 2, Bossier, LA
Built 1986 Load: 34.7 t ADT: 200
WOOLWORTH RD
FairOver: BOGGY BAYOU RELIEF
1.6 MI. N. OF LA 525, Caddo, LA
Built 2016 Load: 34.7 t ADT: 3,700
WOOLWORTH RD
FairOver: BOGGY BAYOU
2.62 MI N OF LA 525, Caddo, LA
Built 2016 Load: 34.7 t ADT: 3,700
LA0526
FairOver: GILMER BAYOU
2.0 MI W JCT US 171(LA526, Caddo, LA
Built 1983 Load: 34.7 t ADT: 17,579
US0171
FairOver: CREEK
1.1 MI S OF US 84, De Soto, LA
Built 2009 Load: 34.7 t ADT: 4,494
Pine St
FairOver: MILE CREEK
0.3 MI N OF HWY 79-8, Webster, LA
Built 1935 Load: 34.7 t ADT: 158
LITTLE MISSOURI LP
FairOver: CYPRESS BAYOU
1.6 MI NORTH INT. 157, Morehouse, LA
Built 1986 Load: 34.7 t ADT: 320
CADEVILLE CUTOFF
FairOver: S CHENIERE CR AT INVRT12
1 MILE S CADEVILLE, Ouachita, LA
Built 1984 Load: 34.7 t ADT: 178
DALLAS DR
FairOver: PATRICK BAYOU
2 MI. N. OF SICARD, Ouachita, LA
Built 1986 Load: 34.7 t ADT: 1,166
LA0027
FairOver: COWPEN CREEK
7.7 MI NORTH OF LA 110, Beauregard, LA
Built 2003 Load: 34.7 t ADT: 3,333
I0010
FairOver: BAYOU CONWAY
0.3 M SE of LA 44, Ascension, LA
Built 1979 Load: 34.7 t ADT: 25,735
I0110
FairOver: I-110
0.6 MI W OF LA 67, East Baton Rouge, LA
Built 1958 Load: 34.7 t ADT: 8,250
Port Hudson Cem Rd
FairOver: COOPER BAYOU
0.7 MI W OF US 61, East Baton Rouge, LA
Built 1968 Load: 34.7 t ADT: 2,200
DESTREHAN AVE.
FairOver: KEITHWAY CANAL
1.9 MI E OF LA 3134, Jefferson, LA
Built 2005 Load: 35.0 t ADT: 5,253
DESPAUX DR
FairOver: 20 ARPENT CANAL
0.5 MI N OF LA 39, St. Bernard, LA
Built 1994 Load: 35.0 t ADT: 216
Showing 4,051-4,100 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.