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
I0059
FairOver: CLEAR BAYOU
I0059, St. Tammany, LA
Built 1962 Load: 33.6 t ADT: 33,925
I0012
FairOver: EAST BEDICO CREEK
I0012, St. Tammany, LA
Built 1975 Load: 33.6 t ADT: 28,450
FISH HATCHERY RD.
FairOver: I-12
1.0 M W OF LA 434, St. Tammany, LA
Built 1976 Load: 33.6 t ADT: 4,410
LA1077
FairOver: LA 1077 OVER I-12
LA1077, St. Tammany, LA
Built 1975 Load: 33.6 t ADT: 7,611
LA1091
FairOver: LA 1091 OVER I-12
LA1091, St. Tammany, LA
Built 1970 Load: 33.6 t ADT: 15,094
BISSONET DR
FairOver: CANAL #3
0.0 MI. N.OF VETERAN, Jefferson, LA
Built 1966 Load: 33.7 t
S Broad on ramp
FairOver: STREETS
1.5 MI S OF TULANE AVENUE, Orleans, LA
Built 1951 Load: 33.7 t ADT: 5,441
LA3149
FairOver: DRAIN
.01 MI NORTH OF LA 104, Evangeline, LA
Built 1932 Load: 33.7 t ADT: 1,756
LA0725
FairOver: COULEE MINE
0.64 MI WEST OF LA 723, Lafayette, LA
Built 2002 Load: 33.7 t ADT: 537
I0020
FairOver: I-20 SERVICE RD.
.5 MI EAST OF LA 544, Lincoln, LA
Built 1996 Load: 33.7 t ADT: 50,895
I0020
FairOver: I-20 SERVICE RD.
.5 MI EAST OF LA 544, Lincoln, LA
Built 1996 Load: 33.7 t ADT: 37,514
MARION SIMMS RD
FairOver: LONGS CREEK
0.38 MI NW of LA 34, Ouachita, LA
Built 1997 Load: 33.7 t ADT: 261
GUIDRY RD
FairOver: NEZPIQUE BAYOU
1.1 MI N of LA1159, Allen, LA
Built 1986 Load: 33.7 t ADT: 36
LA0108
FairOver: I-10
3.0 MILES EAST OF JCT LA, Calcasieu, LA
Built 1962 Load: 33.7 t ADT: 22,287
FDR 900
FairOver: TRIB. CORNEY CREEK
3.93 MI. W. OF LA. 9, Claiborne, LA
Built 1974 Load: 33.7 t ADT: 120
Dyson Creek Rd
FairOver: BIG CREEK
7.68 M. W. OF JCT. US 165, Grant, LA
Built 1995 Load: 33.7 t ADT: 176
Grappes Bluff Rd
FairOver: SIMS BAYOU
GRAPPES BLUFF ROAD, Natchitoches, LA
Built 1994 Load: 33.7 t ADT: 264
Goldonna Rd
FairOver: LICK BRANCH
5.83 MI. SOUTH OF LA 156, Natchitoches, LA
Built 1995 Load: 33.7 t ADT: 233
HARVEY CROSSING
FairOver: ANACOCO BAYOU RELIEF
3.45 MI. EAST OF LA 464, Vernon, LA
Built 1992 Load: 33.7 t ADT: 200
LAUREL HILL RD
FairOver: MILL CREEK
1.0 M NORTH OF LA 489, Vernon, LA
Built 1992 Load: 33.7 t ADT: 250
BoDark Rd
FairOver: Cocodrie BAYOU
0.03 LOG MI E Of HWY 906, Concordia, LA
Built 1986 Load: 33.7 t ADT: 130
Lakeshore Dr
FairOver: BAYOU BRIDGE MANDEVILLE
1.0 MILE WEST OF US 190, St. Tammany, LA
Built 1996 Load: 33.7 t ADT: 2,543
HARRISON AVE
FairOver: ORLEANS AVENUE CANAL
0.1 MI EAST OF ARGONNE B, Orleans, LA
Built 2001 Load: 34.0 t
Jacob Dr
FairOver: 20 Arpent Canal
0.4 Mi. N. of LA 39, St. Bernard, LA
Built 1997 Load: 34.0 t ADT: 863
US0090
FairOver: DRAINAGE CANAL NO 1
1.00 MI E OF LA 311, Terrebonne, LA
Built 1987 Load: 34.0 t ADT: 8,789
US0090
FairOver: DRAINAGE CANAL NO 1
1.0 MI E OF LA 311, Terrebonne, LA
Built 1987 Load: 34.0 t ADT: 11,661
Sarah Dee Pkwy.
FairOver: COULEE
0.085 miles NE of Tolson, Lafayette, LA
Built 1978 Load: 34.0 t ADT: 280
Burma Rd
FairOver: BOONE CREEK
3.0 MI SE OF US 80, Webster, LA
Built 1991 Load: 34.0 t ADT: 30
US0167
FairOver: KCS & UNION PACIFIC RR
.2 MI NORTH OF LA 4, Jackson, LA
Built 2001 Load: 34.0 t ADT: 13,811
FRAZIER RD
FairOver: COLVIN CREEK
1.0 MI. EAST OF US 167, Lincoln, LA
Built 2012 Load: 34.0 t ADT: 900
US0165
FairOver: BAYOU
2.2 MI. S. OF LA 26, Allen, LA
Built 2008 Load: 34.0 t ADT: 11,447
LA0110
FairOver: WILDCOW CREEK
9.5 MI. E OF LA 27, Beauregard, LA
Built 2003 Load: 34.0 t ADT: 2,060
GRAY RD
FairOver: VINTON CANAL
2.2 MI W OF LA 108, Calcasieu, LA
Built 1991 Load: 34.0 t ADT: 706
LA0001
FairOver: BAYOU DES GLAISE
2.88 MILES NORTH OF LA 11, Avoyelles, LA
Built 1965 Load: 34.0 t ADT: 4,686
I0010
FairOver: BAYOU CONWAY
0.3M SE JCT I-10 & LA 44, Ascension, LA
Built 1969 Load: 34.0 t ADT: 49,274
I0010
FairOver: BAYOU CONWAY
0.3M SE JCT I-10 & LA 44, Ascension, LA
Built 1969 Load: 34.0 t ADT: 21,372
LA0067
FairOver: LA 67-PLANK OVER I-110
I0010, East Baton Rouge, LA
Built 1968 Load: 34.0 t ADT: 7,370
Pecue Ln
FairOver: DIVERSON CANAL
1.7 MI. NW JCT I-10 LA 42, East Baton Rouge, LA
Built 1995 Load: 34.0 t ADT: 5,385
US0061
FairOver: SANDY CREEK
US0061, East Feliciana, LA
Built 1961 Load: 34.0 t ADT: 2,531
Old Tunica Rd
FairOver: TUNICA BAYOU
0.2 Mi. S. of LA 66, West Feliciana, LA
Built 1999 Load: 34.0 t ADT: 200
LA1072
FairOver: DRAIN
2.62M EAST OF LA 16, Washington, LA
Built 1992 Load: 34.0 t ADT: 1,105
General de Gaulle
FairOver: DRAIN CANAL
1.2 MI SOUTHEAST OF US 90, Orleans, LA
Built 1975 Load: 34.3 t
I0010
FairOver: CITY STREETS
0.039 N OF ST. PHILIP ST, Orleans, LA
Built 1968 Load: 34.3 t ADT: 7,620
I0310
FairOver: RAMP "A"
.2 MI SOUTH OF LA 18, St. Charles, LA
Built 1979 Load: 34.3 t ADT: 15,642
LA0723
FairOver: Coulee Mine
3.51 MI WEST OF LA 93, Lafayette, LA
Built 2003 Load: 34.3 t ADT: 602
Yearwood Rd
FairOver: PHILLIPS BAYOU
3.5 MI. SE OF CASPIANA, Caddo, LA
Built 1998 Load: 34.3 t ADT: 23
Nash Rd
FairOver: CASTOR BAYOU NASH RD. 14
6.6 MI NO OF US 84, De Soto, LA
Built 1984 Load: 34.3 t ADT: 40
State Line Rd
FairOver: GARRISON CREEK
1.47 MI W OF LA 764, De Soto, LA
Built 1984 Load: 34.3 t ADT: 185
Woodsprings Rd
FairOver: CASTOR BAYOU
2.68 MI E OF LA 5, De Soto, LA
Built 1984 Load: 34.3 t ADT: 40
Holmes Rd
FairOver: LITTLE CREEK
0.5 MI. WEST OF LA 169, De Soto, LA
Built 1984 Load: 34.3 t ADT: 55
Showing 3,951-4,000 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.