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
LA0042
FairOver: TICKFAW RIVER
LA0042, Livingston, LA
Built 1962 Load: 28.1 t ADT: 4,071
LA0022
FairOver: AMITE DIVERSION CANAL
LA0022, Livingston, LA
Built 1960 Load: 28.1 t ADT: 8,068
US0190
FairOver: BIG BRANCH
US0190, St. Tammany, LA
Built 1932 Load: 28.1 t ADT: 9,941
LA0433
FairOver: BAYOU BONFOUCA
LA0433, St. Tammany, LA
Built 1976 Load: 28.1 t ADT: 9,174
US0090
FairOver: MISSISSIPPI RIVER
.01 MI SOUTH OF LA 48, Jefferson, LA
Built 1936 Load: 28.2 t ADT: 55,210
MAGNOLIA DR
FairOver: KEYHOLE CANAL
.15 SO OF W.B. EXPWY., Jefferson, LA
Built 1990 Load: 28.2 t
E. MAIN ST
FairOver: YANKEE BAYOU
0.06 MI SE OF LA 308, Lafourche, LA
Built 1971 Load: 28.2 t ADT: 152
E. MAIN ST
FairOver: YANKEE BAYOU
0.06 MI S. OF LA 308, Lafourche, LA
Built 1971 Load: 28.2 t ADT: 152
HWY 11/Par Rd 11
FairOver: DOULLUT CANAL
0.6 MILES SOUTH OF OAK LA, Plaquemines, LA
Built 2013 Load: 28.2 t ADT: 3,700
THERIOT VOISIN BR
FairOver: DU LARGE BAYOU
0001 LOG MI FROM IN, Terrebonne, LA
Built 2011 Load: 28.2 t ADT: 1,156
CEDAR GROVE RD
FairOver: PELTON BAYOU
0.01 MI N OF LA 57, Terrebonne, LA
Built 1960 Load: 28.2 t ADT: 58
Leger Rd
FairOver: LYONS POINT GULLY
0.91M FROM LA 3007, Acadia, LA
Built 1988 Load: 28.2 t ADT: 48
Atkinson Rd.
FairOver: Lyons Point Gully
0.5 Mi. S. of La 3007, Acadia, LA
Built 1988 Load: 28.2 t ADT: 240
Madison Rd.
FairOver: Lyons Point Gully
0.25 Mi E of La 3007, Acadia, LA
Built 1988 Load: 28.2 t ADT: 32
Ebenezer Rd
FairOver: Lyons Point Gully
0.7 Mi. N. of LA 3007, Acadia, LA
Built 1989 Load: 28.2 t ADT: 1,296
Maple St.
FairOver: SALINE BAYOU TRIB
0.4 M SOUTH OF US 80, Bienville, LA
Built 1991 Load: 28.2 t ADT: 350
C. C. Sandidge Rd
FairOver: Spring Branch
.02 MI E OF FV POINT RD., Bossier, LA
Built 1999 Load: 28.2 t ADT: 400
LA0168
FairOver: LA 168 OVER I-49
1.11 MILES W. OF US 71, Caddo, LA
Built 2010 Load: 28.2 t ADT: 625
Linwood Ave
FairOver: CYPRESS BAYOU
3.7 MI SOUTH OF LA 526, Caddo, LA
Built 1987 Load: 28.2 t ADT: 4,925
JEFFERSON-PAIGE RD
FairOver: JEFERSON PAGE TRY CROSS
1.5 MI. WEST OF U.S., Caddo, LA
Built 1976 Load: 28.2 t ADT: 5,824
Friendship Rd
FairOver: CALDWELL B.
3.3 MI SE OF LA 17S, De Soto, LA
Built 1985 Load: 28.2 t ADT: 200
LA0155
FairOver: CREEK
1.1 Mi. E of US 167, Jackson, LA
Built 1971 Load: 28.2 t ADT: 1,605
GREEN LANE
FairOver: BAYOU BONNE IDEE
0.5 MI S of LA 599, Morehouse, LA
Built 1995 Load: 28.2 t ADT: 150
WINNFIELD RD
FairOver: WILDERS CREEK
3 MILES NE OF CADEVILLE, Ouachita, LA
Built 1994 Load: 28.2 t ADT: 197
US0080
FairOver: DRAIN
1.1 MI EAST OF LA 583, Richland, LA
Built 1953 Load: 28.2 t ADT: 1,451
LA0017
FairOver: RESERVOIR
.28 MI NORTH OF LA 854, Richland, LA
Built 2000 Load: 28.2 t ADT: 3,890
I0020
FairOver: I-20 OVER LA 17
I-20 OVER LA 17, Richland, LA
Built 1970 Load: 28.2 t ADT: 38,890
I0020
FairOver: I-20 OVER LA 17
I-20 OVER LA 17, Richland, LA
Built 1970 Load: 28.2 t ADT: 16,997
PILGRIM REST CH RD
FairOver: MILL CREEK
5.8 MI. NW INT. 209, Union, LA
Built 1984 Load: 28.2 t ADT: 366
Bonner Rd
FairOver: COLEWA BAYOU
2.5 MI N of LA 2, West Carroll, LA
Built 1999 Load: 28.2 t ADT: 560
US0165
FairOver: KINDER DITCH
6.6 MI N of LA-102, Allen, LA
Built 1932 Load: 28.2 t ADT: 11,886
ANTHONY FERRY RD
FairOver: COON GULLY
0.2 M N of LA 379, Calcasieu, LA
Built 1973 Load: 28.2 t ADT: 1,154
LA0114
FairOver: BAYOU DES GLAISES
0.76 M. W. OF JCT LA 451, Avoyelles, LA
Built 2009 Load: 28.2 t ADT: 3,984
FDR 902Bridge
FairOver: GREER CREEK
1.0 MI. OF LA. 9, Claiborne, LA
Built 1973 Load: 28.2 t ADT: 40
LA0153
FairOver: CABIN CREEK
7.66 MI. N OF INT LA9, Natchitoches, LA
Built 1977 Load: 28.2 t ADT: 609
LA0118
FairOver: DRY CREEK
14.06 MI. EAST OF US 171, Sabine, LA
Built 1985 Load: 28.2 t ADT: 1,471
US0165
FairOver: OUACHITA RIVER @ COLUMBI
0.48 M S of LA 4, Caldwell, LA
Built 2007 Load: 28.2 t ADT: 13,633
Lake Sherwood Ave
FairOver: DRAIN CANAL
0.5 M N OF COURSEY BLVD, East Baton Rouge, LA
Built 1972 Load: 28.2 t ADT: 1,312
US0190
FairOver: BIG BRANCH
2.7 M W OF LA 441, Livingston, LA
Built 1932 Load: 28.2 t ADT: 7,126
Wiley Rd.
FairOver: Turkey Creek
0.34 Mi W of Glenmora Rd, Evangeline, LA
Built 2007 Load: 28.3 t ADT: 12
LA0083
FairOver: BAYOU BLUE
8 MI NORTH OF LA 319, Iberia, LA
Built 1951 Load: 28.3 t ADT: 3,078
US0090-B
FairOver: OFF RAMP LA-1
.4 MI WEST OF LA 23, Jefferson, LA
Built 1985 Load: 28.5 t ADT: 15,955
SEGNETTE BLVD
FairOver: MAIN CANAL
0.7 MI S OF US 90 BUS., Jefferson, LA
Built 1986 Load: 28.5 t
LIVE OAK BLVD
FairOver: CRAWFISH CANAL
1.0 M NW OF US 90, Jefferson, LA
Built 1989 Load: 28.5 t ADT: 2,000
PATRICIA ST
FairOver: GUICHARD CANAL
.6 MI SE OF LA 39, St. Bernard, LA
Built 1974 Load: 28.5 t ADT: 5,918
PATRICIA ST
FairOver: GUERENGER CANAL
.6 MI NE OF LA. 39, St. Bernard, LA
Built 1974 Load: 28.5 t ADT: 2,600
LA0024
FairOver: BAYOU TERREBONNE
0.4 MI. E OF INTRACOASTAL, Terrebonne, LA
Built 2006 Load: 28.5 t ADT: 30,800
ST LOUIS CANAL RD
FairOver: ST LOUIS CANAL
0.75 N OF LA 3040, Terrebonne, LA
Built 1976 Load: 28.5 t ADT: 6,487
US0090
FairOver: VERMILION RIVER
0.3 MI S. OF US 90BUS, Lafayette, LA
Built 1965 Load: 28.5 t ADT: 62,432
US0090
FairOver: VERMILION RIVER
2.34 Mi N of LA 339, Lafayette, LA
Built 1965 Load: 28.5 t ADT: 26,010
Showing 2,451-2,500 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.