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
TANK FARM RD
FairOver: CREEK
0.8 MI W OF LA 397, Calcasieu, LA
Built 1993 Load: 16.3 t ADT: 1,449
STEWARD RD
FairOver: CANAL
0.1 MI W of LA 3112, Calcasieu, LA
Built 1999 Load: 16.3 t ADT: 114
LA0506
FairOver: BLACK BAYOU
.4 MI WEST OF US 165, Caldwell, LA
Built 1953 Load: 16.3 t ADT: 306
LA0124
FairOver: BOGGY BAYOU
.9 MI NORTH OF LA 3102, Catahoula, LA
Built 1960 Load: 16.3 t ADT: 287
LA0127
FairOver: CREEK
1.0 MI NORTH OF LA 460, LaSalle, LA
Built 1950 Load: 16.3 t ADT: 2,211
Moise Rd
FairOver: New River
0.01 Mi E of LA 429, Ascension, LA
Built 2000 Load: 16.3 t ADT: 10
Polk Brannon Road
FairOver: UNNAMED CREEK
4 MI.N.W.LA 10 LA 421 JCT, West Feliciana, LA
Built 1984 Load: 16.3 t ADT: 40
Bankston Rd S.
FairOver: BLOOD RIVER
0.9 MILES SOUTH OF US 190, Livingston, LA
Built 2006 Load: 16.3 t ADT: 100
LA1024
FairOver: CREEK
2.6 M E OF LA 16, Livingston, LA
Built 1956 Load: 16.3 t ADT: 1,020
Burgess Rd
FairOver: WEST COYELL CREEK
4.8 MI NE OF 3002 EXIT, Livingston, LA
Built 2001 Load: 16.3 t ADT: 800
W. Hubert Stilley
FairOver: TAYLOR BRANCH
9.2 MI NE OF 43 EXIT, Livingston, LA
Built 1960 Load: 16.3 t ADT: 150
LA0043
FairOver: COTTON PATCH BRANCH
0.1 M N OF LA 38, St. Helena, LA
Built 1960 Load: 16.3 t ADT: 825
LA0040
FairOver: CREEK
1.4 M W OF LA 1077, St. Tammany, LA
Built 1954 Load: 16.3 t ADT: 2,778
LA0445
FairOver: CREEK
2.3 M N OF LA 40, Tangipahoa, LA
Built 1954 Load: 16.3 t ADT: 1,342
LA0450
FairOver: TCHEFUNCTA RIVER
1.7 M S OF LA 10, Washington, LA
Built 1943 Load: 16.3 t ADT: 1,162
LA0436
FairOver: MUSTER GROUND C
0.9 M W OF LA 21, Washington, LA
Built 1958 Load: 16.3 t ADT: 1,306
LA3185
FairOver: DRAIN CANAL
2.3 MI WEST OF LA 3107, Lafourche, LA
Built 1969 Load: 16.5 t ADT: 12,957
LA0039
FairOver: INDUSTRIAL CANAL
4.1 MI W OF LA 47, Orleans, LA
Built 1957 Load: 16.5 t ADT: 36,993
SAVANNE RD
FairOver: COULEE
0544 LOG MI FROM IN, Terrebonne, LA
Built 1972 Load: 16.5 t ADT: 7,455
BULL RUN RD
FairOver: TERR LAF DRAINAGE CANAL
6.7 MI W OF LA 311, Terrebonne, LA
Built 1968 Load: 16.5 t ADT: 826
LA0344
FairOver: TECHE BAYOU/LOREAUVILLE
0.1 MI WEST OF LA 86, Iberia, LA
Built 1964 Load: 16.5 t ADT: 2,059
Bourque Rd
FairOver: ILE DES CANNES COULEE
0.4 Mi W of US 167, Lafayette, LA
Built 1974 Load: 16.5 t ADT: 800
W. Willow St.
FairOver: COULEE
0.64 Mi W of LA 3184, Lafayette, LA
Built 1977 Load: 16.5 t ADT: 1,960
Grand Bois Rd
FairOver: COULEE
1.8 Mi. E. of La 3039, St. Martin, LA
Built 1967 Load: 16.5 t ADT: 140
ELYSIAN FIELD RD
FairOver: TRIB TO CROSS BAYOU
2 MI. SO. WEST OF U., Caddo, LA
Built 1980 Load: 16.5 t ADT: 58
W. 79th ST
FairOver: 81ST STREET DITCH
1.3 MI N OF HWY 3212, Caddo, LA
Built 1980 Load: 16.5 t ADT: 100
LA0534
FairOver: BRANCH
1.6 MI NORTH OF LA 534-S, Claiborne, LA
Built 1971 Load: 16.5 t ADT: 118
LA0177
FairOver: CHEMARD LAKE
2.07 MI NORTH OF LA 346, De Soto, LA
Built 1959 Load: 16.5 t ADT: 2,878
LA0191
FairOver: COW BAYOU
2.14 MI NORTH OF LA 481, De Soto, LA
Built 1960 Load: 16.5 t ADT: 769
LA0191
FairOver: BULL BAYOU
3.70 MI NORTH OF LA 481, De Soto, LA
Built 1960 Load: 16.5 t ADT: 769
PATTERSON RD
FairOver: BAYOU
1.3 MI N of ATTERBERRY RD, Jefferson Davis, LA
Built 1980 Load: 16.5 t ADT: 350
LA0452
FairOver: JOHNSON BAYOU
1.96 MI. NORTH OF LA 1190, Avoyelles, LA
Built 1953 Load: 16.5 t ADT: 8,736
Beauregard Rd
FairOver: CURRENT BAYOU
1.0 M. NW OF S. JCT. LA 1, Rapides, LA
Built 1991 Load: 16.5 t ADT: 60
WEST BOUNDARY RD
FairOver: HURRICANE BRANCH
0.5 M. N. OF BAILEY RD., Vernon, LA
Built 1970 Load: 16.5 t ADT: 130
TOWER RD
FairOver: MAPLE BRANCH
0.60 M. N. OF LA 10, Vernon, LA
Built 1970 Load: 16.5 t ADT: 350
Coochie Brake
FairOver: COOCHIE BREAK CREEK
2.7 MI. NORTH OF LA 34, Winn, LA
Built 1965 Load: 16.5 t ADT: 15
N 19TH ST.
FairOver: I-110
1.4 M NE of I-10&I-110, East Baton Rouge, LA
Built 1969 Load: 16.5 t ADT: 44,150
LA3213
FairOver: MISSISSIPPI RIVER
0.85M NE JCT LA20 & LA44, St. James, LA
Built 1989 Load: 16.5 t ADT: 13,743
LOOKOUT ROAD
FairOver: WHISKEY CHITTO CREEK
VE 923 307, Vernon, LA
Built 1978 Load: 16.5 t ADT: 336
TABONY LN
FairOver: DRAINAGE CANAL
0.0 S OF SR 39, Plaquemines, LA
Built 1960 Load: 16.8 t
SUBURBAN RD
FairOver: DRAINAGE CANAL
0.01 MI. W. OF HWY., Plaquemines, LA
Built 1965 Load: 16.8 t ADT: 170
LA0182
FairOver: BAYOU TERREBONNE
.1 MI EAST OF LA 24 WEST, Terrebonne, LA
Built 1968 Load: 16.8 t ADT: 8,732
North Ave. D
FairOver: COULEE
1.2 Mi. N. of US 90, Acadia, LA
Built 1974 Load: 16.8 t ADT: 960
La Neuville Rd.
FairOver: COULEE
0.45 Mi East of LA 339, Lafayette, LA
Built 1976 Load: 16.8 t ADT: 780
Lajaunie Rd
FairOver: COULEE
.75 MI SW of LA 98, Lafayette, LA
Built 1978 Load: 16.8 t ADT: 1,160
Charles Fisher Rd
FairOver: Drainage Bayou
0.4 M NW of LA 357, St. Landry, LA
Built 2018 Load: 16.8 t ADT: 245
LA0035
FairOver: DRAINAGE CANAL
0.5 Mi. S. of LA 358, St. Landry, LA
Built 1968 Load: 16.8 t ADT: 1,352
Alice C. Rd.
FairOver: Yellow Bayou Canal
0.8 Mi. W. of LA 317, St. Mary, LA
Built 1968 Load: 16.8 t ADT: 1,220
Chatsworth Rd
FairOver: Yokely Bayou
0.3 Mi S of LA 3211, St. Mary, LA
Built 1967 Load: 16.8 t ADT: 1,770
Lake Bistineau Rd
FairOver: TRIBUTARY TO MADDEN CREE
1.5 MI. NO. OF LA 15, Bienville, LA
Built 1963 Load: 16.8 t ADT: 450
Showing 451-500 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.