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
Kingspoint Blvd.
FairOver: CANAL
1.4 MI EAST OF I10, St. Tammany, LA
Built 1977 Load: 30.1 t ADT: 2,000
Old River Rd
FairOver: BR. OVER DOUBLOUN BRANCH
N. 190 ON OLD RIVER RD, St. Tammany, LA
Built 1987 Load: 30.1 t ADT: 3,391
Fish Hatchery Rd
FairOver: CREEK
0.65 N.OF LA.1093-1, St. Tammany, LA
Built 1960 Load: 30.1 t ADT: 280
I0055
FairOver: TERRYS CREEK
2 Miles North of LA 38, Tangipahoa, LA
Built 1966 Load: 30.1 t ADT: 21,762
I0055
FairOver: TERRYS CREEK
2.5 Mi S. of State Line, Tangipahoa, LA
Built 1966 Load: 30.1 t ADT: 17,665
GRETNA BLVD
FairOver: DRAINAGE CANAL
0.2 MI N OF LA 23, Jefferson, LA
Built 2004 Load: 30.5 t ADT: 2,500
US0090-B
FairOver: OFF RAMP ST-3
.4 MI WEST OF LA 23, Jefferson, LA
Built 1985 Load: 30.5 t ADT: 15,955
ALMONASTER AVE RR
FairOver: FLORIDA AVE.
0.05 MI N OF N DORGENOIS, Orleans, LA
Built 1960 Load: 30.5 t
E. CEDAR ST.
FairOver: DRAINAGE DITCH
0.5 MI. E. OF LA 13, Acadia, LA
Built 1983 Load: 30.5 t ADT: 864
LA1096
FairOver: CREEK
0.40 MI WEST OF LA 95, Lafayette, LA
Built 1981 Load: 30.5 t ADT: 654
LA0169
FairOver: COTTONWOOD CREEK
2.9 MI EAST OF LA 1, Caddo, LA
Built 2006 Load: 30.5 t ADT: 311
I0220
FairOver: RUSSELL ROAD
5.4 MI NORTH OF I-20, Caddo, LA
Built 1979 Load: 30.5 t ADT: 13,700
Jefferson Paige Rd
FairOver: BICKHAM BAYOU
1.8 MI W. OF U.S. 80, Caddo, LA
Built 1998 Load: 30.5 t ADT: 100
CENTURY LINK DR
FairOver: DESIARD BAYOU
AT LA FISH HATCHERY, Ouachita, LA
Built 1975 Load: 30.5 t ADT: 265
LA0389
FairOver: CREEK
10.8 MI NORTH LA 109, Beauregard, LA
Built 2005 Load: 30.5 t ADT: 442
I0010
FairOver: KAYOUCHE COULEE
0.8 MI EAST OF US 171, Calcasieu, LA
Built 1964 Load: 30.5 t ADT: 71,509
LA0384
FairOver: DRAIN
3.1 MI N of LA1144, Cameron, LA
Built 2004 Load: 30.5 t ADT: 195
LA0102
FairOver: DRAIN DITCH
0.7 MI E of LA 26, Jefferson Davis, LA
Built 2001 Load: 30.5 t ADT: 832
LA0102
FairOver: BAYOU
1.94 EAST OF LA 26, Jefferson Davis, LA
Built 2002 Load: 30.5 t ADT: 832
Luke Martin Rd
FairOver: BAYOU DULAC
APPROX. 5 M. N. OF US 71, Avoyelles, LA
Built 1984 Load: 30.5 t ADT: 460
LA0121
FairOver: BAYOU RAPIDES
4.02 MI. NORTH OF LA 28, Rapides, LA
Built 2006 Load: 30.5 t ADT: 1,662
LA0129
FairOver: Ross Bayou
1.03 MI NORTH OF LA 565, Concordia, LA
Built 2000 Load: 30.5 t ADT: 1,684
I0010
FairOver: I-10 TO I-110 S.B.
I0010, East Baton Rouge, LA
Built 1967 Load: 30.5 t ADT: 197,070
I0010
FairOver: I-12 RAMP TO I-10
2.2 M W of US 61, East Baton Rouge, LA
Built 1974 Load: 30.5 t ADT: 8,250
MILLERVILLE RD
FairOver: I-12
I-12, East Baton Rouge, LA
Built 1989 Load: 30.5 t ADT: 10,570
LA0016
FairOver: SPILLER CREEK
2.6 MI NO LA 1019 INTER., Livingston, LA
Built 1996 Load: 30.5 t ADT: 7,595
LEE GATES RD
FairOver: LAPINE BAYOU
0.75 MILES SOUTH OF LA 34, Ouachita, LA
Built 2011 Load: 30.7 t ADT: 57
PARISH LINE ROAD
FairOver: SERPENT BAYOU
1.1 MI W of LA 99, Jefferson Davis, LA
Built 2013 Load: 30.7 t ADT: 60
US0090-B
FairOver: ON RAMP TO US 90 BUS EB
0.06 MI EAST OF AMES BLVD, Jefferson, LA
Built 1992 Load: 30.8 t ADT: 15,955
LA3152
FairOver: HILTON DR & RR
.5 MI SOUTH OF US 61, Jefferson, LA
Built 1973 Load: 30.8 t ADT: 55,210
Vintage Dr
FairOver: CANAL NO. 17
2.2 MI WEST OF LA 49, Jefferson, LA
Built 1990 Load: 30.8 t
VINTAGE W.B.
FairOver: CANAL NO. 17
2.2 MI WEST OF LA 49, Jefferson, LA
Built 1990 Load: 30.8 t
US0011
FairOver: I-10
5.35 MI NORTH OF US 90, Orleans, LA
Built 1967 Load: 30.8 t ADT: 3,912
US0090
FairOver: CITY STREETS
.78 MI SOUTH OF I-10, Orleans, LA
Built 1994 Load: 30.8 t ADT: 7,620
I0010
FairOver: AIRLINE HWY US 61
1.7 MI EAST OF I-610, Orleans, LA
Built 1977 Load: 30.8 t ADT: 132,500
PALMETTO ST
FairOver: AIRLINE HWY. KCS RR
.50 MI.W.OF CARROLTON AVE, Orleans, LA
Built 1960 Load: 30.8 t
PALMETTO ST
FairOver: AIRLINE HWY. KCS RR
.50 MI.W.OF CARROLTON AVE, Orleans, LA
Built 1960 Load: 30.8 t
I0310
FairOver: M. P. RR
4.9 MI S OF US 61, St. Charles, LA
Built 1979 Load: 30.8 t ADT: 47,396
I0310
FairOver: I-310 OVER LA 3127
1.57 MI. N. OF US 90, St. Charles, LA
Built 1986 Load: 30.8 t ADT: 40,204
LA3087
FairOver: INTRACOASTAL WW
.1 MI EAST OF LA 659, Terrebonne, LA
Built 1980 Load: 30.8 t ADT: 13,617
MORGAN ST
FairOver: TERREBONNE BAYOU
0.01 MI S OF LA 24, Terrebonne, LA
Built 2003 Load: 30.8 t ADT: 3,837
LA1115
FairOver: LYONS POINT GULLY
2.62 MI EAST OF LA 91, Acadia, LA
Built 1962 Load: 30.8 t ADT: 377
S. College Ext.
FairOver: DES POCHES DRAINAGE CANA
0.37 Mi N of LA 3095, Lafayette, LA
Built 1985 Load: 30.8 t ADT: 1,280
Shadow Bluff Dr
FairOver: Francois Coulee
.25 MI NE of LA Ave, Lafayette, LA
Built 1979 Load: 30.8 t ADT: 370
I0049
FairOver: E. PRUDHOMME STREET
0.7 MI N of US 190, St. Landry, LA
Built 1983 Load: 30.8 t ADT: 16,429
I0049
FairOver: E. PRUDHOMME STREET
3.13 Mi S of LA 744, St. Landry, LA
Built 1983 Load: 30.8 t ADT: 13,540
I0010
FairOver: W ATCHAFALAYA FLOODWAY
2.5 MI EAST OF LA 347, St. Martin, LA
Built 1971 Load: 30.8 t ADT: 37,370
I0010
FairOver: W ATCHAFALAYA FLOODWAY
4.47 Mi W of LA 3177, St. Martin, LA
Built 1971 Load: 30.8 t ADT: 1,585
LA0014
FairOver: MERMENTAU RIVER
1.2 MI N. OF LA 717, Vermilion, LA
Built 1976 Load: 30.8 t ADT: 1,717
BREWER RD
FairOver: I-20
2.5 MI EAST OF LA 154, Bienville, LA
Built 1964 Load: 30.8 t ADT: 2,870
Showing 2,751-2,800 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.