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
LA0548
FairOver: CREEK
5.17MI EAST OF LA 34, Jackson, LA
Built 1949 Load: 29.9 t ADT: 280
LA0548
FairOver: CUB CREEK
7.12 MI EAST OF LA 34, Jackson, LA
Built 1949 Load: 29.9 t ADT: 280
LETOURNEAU RD
FairOver: I-20
1.4 MI E OF LA 602-2, Madison, LA
Built 1976 Load: 29.9 t ADT: 24,300
LA3280
FairOver: OUACHITA RIVER
LA 3280 OVER OUACHITA RIV, Ouachita, LA
Built 2003 Load: 29.9 t ADT: 8,312
LA0583
FairOver: LA 583 OVER I-20
LA 583 OVER I-20, Richland, LA
Built 1969 Load: 29.9 t ADT: 1,108
SECTION RD
FairOver: I-20
3.2 MI EAST OF LA 609, Richland, LA
Built 1970 Load: 29.9 t ADT: 2,390
LA0099
FairOver: BAYOU CHENE
3.8 MI N of LA 380, Jefferson Davis, LA
Built 1979 Load: 29.9 t ADT: 456
LA0133
FairOver: BAYOU LAFOURCHE
2.6 MI NORTH OF LA 4, Caldwell, LA
Built 1949 Load: 29.9 t ADT: 1,415
LA0064
FairOver: COMITE RIVER
LA0064, East Baton Rouge, LA
Built 1978 Load: 29.9 t ADT: 16,768
US0190
FairOver: COYELL CREEK
1.0 M W OF LA 63, Livingston, LA
Built 1953 Load: 29.9 t ADT: 7,215
I0059
FairOver: MIDDLE SLOUGH
I0059, St. Tammany, LA
Built 1962 Load: 29.9 t ADT: 33,925
I0059
FairOver: RONES BAYOU
I0059, St. Tammany, LA
Built 1962 Load: 29.9 t ADT: 33,925
US0090-B
FairOver: HARVEY CANAL/STS/RR
1.4 MI WEST OF LA 23, Jefferson, LA
Built 1987 Load: 30.1 t ADT: 101,282
US0090-B
FairOver: OFF RAMP TO STUMPF BLVD.
0.8 MI WEST OF LA 23, Jefferson, LA
Built 1987 Load: 30.1 t ADT: 15,955
US0090-B
FairOver: ON RAMP ST-4
.1 MI WEST OF LA 23, Jefferson, LA
Built 1985 Load: 30.1 t ADT: 15,955
US0090-B
FairOver: ON RAMP TO US 90 BUS WB
0.6 MI EAST OF LA 45, Jefferson, LA
Built 1992 Load: 30.1 t ADT: 15,955
FAIRFIELD AVE
FairOver: WEYRAUCH CANAL
0.8 MI W OF LAPALCO BLVD., Jefferson, LA
Built 2002 Load: 30.1 t
McArthur Dr
FairOver: BAYOU JOE MARCEL
00.25 MI NORTH OF LA 10, Evangeline, LA
Built 1977 Load: 30.1 t ADT: 340
E. Milton Ave.
FairOver: ANSEIM COULEE
0.01 MI EAST OF LA 339, Lafayette, LA
Built 1973 Load: 30.1 t ADT: 8,700
E. Milton Ave.
FairOver: ANSELM COULEE
0.55 MI EAST OF LA 339, Lafayette, LA
Built 1973 Load: 30.1 t ADT: 8,700
Iberia St
FairOver: BAYOU PARC PERDU
0.5 Mi W of Lafayette St, Lafayette, LA
Built 1973 Load: 30.1 t ADT: 6,620
I0010
FairOver: LA 182
1.75 MI East of LA 3184, Lafayette, LA
Built 1968 Load: 30.1 t ADT: 56,748
I0010
FairOver: LA 182
I-10 OVER LA 182, Lafayette, LA
Built 1968 Load: 30.1 t ADT: 2,969
LA0742
FairOver: BAYOU TOULOUSE
4.42 MI WEST OF LA 31, St. Landry, LA
Built 1974 Load: 30.1 t ADT: 1,741
W. Bellevue St.
FairOver: BAYOU TESSON
0.1 Mi E of S Liberty St., St. Landry, LA
Built 1965 Load: 30.1 t ADT: 1,500
Dumesnil Rd
FairOver: VACHERIE CANAL
0.52 Mi N of La 83, St. Mary, LA
Built 1972 Load: 30.1 t ADT: 50
Junius Rd
FairOver: BATON COULEE
1.3 MILES W. OF LA.695, Vermilion, LA
Built 2014 Load: 30.1 t ADT: 100
SOUTH LAKESHORE DR
FairOver: TRIB. TO CROSS LAKE
5.5 MI E OF LA 169, Caddo, LA
Built 1982 Load: 30.1 t ADT: 475
LA0616
FairOver: South Tupawek Bayou
1.2 Mi W. of LA 143, Ouachita, LA
Built 2019 Load: 30.1 t ADT: 10,181
LA0034
FairOver: CREEK
5.48 MI EAST OF LA 546, Ouachita, LA
Built 1967 Load: 30.1 t ADT: 15,742
MONROE RD
FairOver: LITTLE COLEWA BAYOU
3.2 MI N of LA 854, Richland, LA
Built 2003 Load: 30.1 t ADT: 100
LA0017
FairOver: COLEMAN BAYOU
4.2 MI NORTH OF LA 2, West Carroll, LA
Built 1924 Load: 30.1 t ADT: 3,570
WEST LYONS ST
FairOver: CANAL
0.3 MI NORTH OF US 90, Calcasieu, LA
Built 2009 Load: 30.1 t ADT: 200
MANCHESTER RD
FairOver: FARMERS L & C CO. CANAL
3.1 MI N of LA 14, Calcasieu, LA
Built 1983 Load: 30.1 t ADT: 276
WEST PARISH RD
FairOver: CANAL
0.7 MI WEST OF LA 1256, Calcasieu, LA
Built 1980 Load: 30.1 t ADT: 340
EDGERLY RD
FairOver: HOUSTON RIVER
6.2 MI. N. OF US 90, Calcasieu, LA
Built 1982 Load: 30.1 t ADT: 583
FARM SUPPLY ROAD
FairOver: DITCH
3.9 M N of I-10, Jefferson Davis, LA
Built 1984 Load: 30.1 t ADT: 200
LA0493
FairOver: BAYOU BREVILLE
1.48 MI. E OF INT LA1, Natchitoches, LA
Built 1949 Load: 30.1 t ADT: 294
US0167
FairOver: DUGDEMONA RIVER
1.69 MI. SOUTH OF LA 505, Winn, LA
Built 2010 Load: 30.1 t ADT: 5,367
LA0577
FairOver: TURKEY CREEK
03.69 MI FROM JUNCTION 57, Franklin, LA
Built 2014 Load: 30.1 t ADT: 977
LA0618
FairOver: PINE FLAT SLOUGH
3.09 MILES FROM JUNCT. LA, Franklin, LA
Built 2008 Load: 30.1 t ADT: 1,271
W Robert Wilson Rd
FairOver: DRAINAGE BAYOU
0.26 MILES NORTH OF LA.30, Ascension, LA
Built 2016 Load: 30.1 t ADT: 120
Patty Jo Ln
FairOver: BLACK BAYOU
0.1 MI SE OF ASCEN. 929, Ascension, LA
Built 1965 Load: 30.1 t ADT: 20
Central Throughway
FairOver: BEAVER BAYOU
2.0 MI. N. OF US190, East Baton Rouge, LA
Built 2011 Load: 30.1 t ADT: 10,400
Captain Ryan Dr
FairOver: Monte Sano Bayou
0.2 MI E Veterans BLVD, East Baton Rouge, LA
Built 2000 Load: 30.1 t ADT: 1,314
Port Hudson Cem Rd
FairOver: COOPER BAYOU REF
0.3 M W of US 61, East Baton Rouge, LA
Built 1968 Load: 30.1 t ADT: 2,200
JESSE STONE RD
FairOver: DRAIN CANAL @ SOUTHERN U
RD ON SOUTHERN UNIV CAMPU, East Baton Rouge, LA
Built 1996 Load: 30.1 t ADT: 3,691
LA0952
FairOver: TRIBUTARY OF REDWOOD CK.
0.3 Mi W of LA 68, East Feliciana, LA
Built 1980 Load: 30.1 t ADT: 1,341
LA0076
FairOver: BAYOU GROSSE TETE
LA0076, Iberville, LA
Built 1973 Load: 30.1 t ADT: 7,562
LA0421
FairOver: MILL CREEK TRIB
LA0421, West Feliciana, LA
Built 1973 Load: 30.1 t ADT: 739
Showing 2,701-2,750 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.