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
LA0019
PoorOver: WHITE BAYOU
1.28 MI N OF LA 64, East Baton Rouge, LA
Built 1951 Load: 19.1 t ADT: 11,198
Pinewood Dr
PoorOver: BEAVER BAYOU
2.5 MI N. of Denham Rd, East Baton Rouge, LA
Built 1980 Load: 19.1 t ADT: 144
Black Rd
PoorOver: DRAINAGE BAYOU
2.3 MI E LA 64 LA67 JCT, East Baton Rouge, LA
Built 1988 Load: 19.1 t ADT: 4
Thompson Creek Rd
PoorOver: SHADY GROVE BRANCH
0.9 M W of LA 19, East Feliciana, LA
Built 1996 Load: 19.1 t ADT: 70
LA0076
PoorOver: STREAM NO NAME
0.9 M NE of LA 411, Iberville, LA
Built 1952 Load: 19.1 t ADT: 7,562
LA0075
PoorOver: BAYOU BREAUX
0.67 M N of LA 75, Iberville, LA
Built 1969 Load: 19.1 t ADT: 2,943
LA0965
PoorOver: THOMPSON CRK TRIB
1.1 M S of LA 10&LA 965, West Feliciana, LA
Built 1969 Load: 19.1 t ADT: 525
LA0022
PoorOver: BEDICO CREEK
2.6 Mi E of La 445, Tangipahoa, LA
Built 1938 Load: 19.1 t ADT: 6,775
LA1072
PoorOver: DRAIN
0.9 M E OF LA 16, Washington, LA
Built 1954 Load: 19.1 t ADT: 1,105
ROCKY SPRINGS RD
PoorOver: BAYOU DUPONT
ROCKY SPRINGS ROAD, Sabine, LA
Built 1955 Load: 19.2 t ADT: 75
Ridge Rd
PoorOver: DRY CREEK
2.4 MI. EAST OF LA 4, Bienville, LA
Built 1976 Load: 19.3 t ADT: 100
Six Mile Rd
PoorOver: SIX MILE CREEK
2.7 MI. NO. OF LA 4, Bienville, LA
Built 1975 Load: 19.3 t ADT: 80
Log Ferry Rd
PoorOver: Posten Bayou
4.5M NORTH OF HWY 537, Bossier, LA
Built 1992 Load: 19.3 t ADT: 80
LA0148
PoorOver: CREEK
3.06 MI SOUTH OF LA 34, Jackson, LA
Built 1949 Load: 19.3 t ADT: 318
Giled Rd
PoorOver: BLUFF CREEK
4.0 M S of LA 10, East Feliciana, LA
Built 1979 Load: 19.3 t ADT: 68
Belle Gardner Rd
PoorOver: CATCA CREEK
2 MI SW OF JCT 16 & 450, Tangipahoa, LA
Built 1985 Load: 19.3 t ADT: 55
US0167
PoorOver: COULEE MINE
2.58 MI E OF LA 3073, Lafayette, LA
Built 1958 Load: 19.4 t ADT: 27,213
US0080
PoorOver: ALLIGATOR BAYOU
1.2 MI E OF LA782-2, Bossier, LA
Built 1936 Load: 19.4 t ADT: 2,376
LA0518
PoorOver: BAYOU DARBONNE
2.60 MI NORTH OF LA 146, Claiborne, LA
Built 1979 Load: 19.4 t ADT: 389
LA0830-6
PoorOver: HORSE BAYOU
1.30 MI NORTH OF US 165, Morehouse, LA
Built 1971 Load: 19.4 t ADT: 4,905
KIRKMAN ST
PoorOver: CONTRABAND BAYOU
0.25 MI N OF LA 3186, Calcasieu, LA
Built 1964 Load: 19.4 t ADT: 6,090
LYONS RD.
PoorOver: THORNWELL DRAINAGE CANAL
0.6 MI S of LA 380, Jefferson Davis, LA
Built 1974 Load: 19.4 t ADT: 75
BABINEAUX ROAD
PoorOver: CREEK
0.6 MI E of PanchovilleRd, Jefferson Davis, LA
Built 1978 Load: 19.4 t ADT: 30
Bell Road
PoorOver: MILL BRANCH
0.75 M. N. OF JCT LA 123, Grant, LA
Built 1982 Load: 19.4 t ADT: 15
S Tiger Bend Rd
PoorOver: DRAINAGE BAYOU
3.4 Mi E of LA 73, East Baton Rouge, LA
Built 1965 Load: 19.4 t ADT: 5,630
E Achord Rd
PoorOver: DRAINAGE BAYOU
4 MI.NE LA 42 I-10 I, East Baton Rouge, LA
Built 1970 Load: 19.4 t ADT: 1,732
E. State St
PoorOver: CORPORATION CANAL
BATON ROUGE, East Baton Rouge, LA
Built 1960 Load: 19.4 t ADT: 1,500
Read BLVD
PoorOver: MORRISON CANAL
1.0MI.N.OF I-10, Orleans, LA
Built 1960 Load: 19.8 t
Gills Rd
PoorOver: DRAINAGE CANAL
0.10 MI N of Credeur Rd, St. Landry, LA
Built 1970 Load: 19.8 t ADT: 100
US0171
PoorOver: BUCHANAN BAYOU
3.3 MI. S. OF LA 526, Caddo, LA
Built 1953 Load: 19.8 t ADT: 16,911
LA0143
PoorOver: DARBONNE BAYOU
2.8 MI NORTH OF LA 616, Ouachita, LA
Built 1962 Load: 19.8 t ADT: 3,674
BAGGETT RD
PoorOver: CREEK
0.8 MI N of LA 26, Allen, LA
Built 1982 Load: 19.8 t ADT: 60
LA0378
PoorOver: W FORK CALCASIEU RIVER
3.27 MI W OF US 171, Calcasieu, LA
Built 1968 Load: 19.8 t ADT: 13,371
RIVER RD
PoorOver: KINNER GULLY
0.5 MI NE OF LA 3059, Calcasieu, LA
Built 1987 Load: 19.8 t ADT: 1,608
BIG WOODS-STARKS
PoorOver: BIRD ISLAND BAY
4.6 MI E of LA 109, Calcasieu, LA
Built 1968 Load: 19.8 t ADT: 1,152
LA0121
PoorOver: CALCASIEU RIVER
0.76 MI. SW OF LA 461, Rapides, LA
Built 1973 Load: 19.8 t ADT: 1,932
Milldale Rd
PoorOver: WIND BAYOU
2.1 MI. SOUTH OF PRIDE, East Baton Rouge, LA
Built 1958 Load: 19.8 t ADT: 377
LA0965
PoorOver: THOMPSON CREEK TRIBUTARY
LA0965, West Feliciana, LA
Built 1973 Load: 19.8 t ADT: 525
Rousseau Rd
PoorOver: TCHEFUNETE RIVER
0.45 MILES NORTH OF LA.10, St. Tammany, LA
Built 1973 Load: 19.8 t ADT: 458
LA0040
PoorOver: NATALBANY RIVER
0.5 M W OF I-55, Tangipahoa, LA
Built 1971 Load: 19.8 t ADT: 913
Cousins Rd.
PoorOver: DES CANNES BAYOU
2 Miles S. of La 1161, Evangeline, LA
Built 2010 Load: 20.0 t ADT: 146
LA0004
PoorOver: DRAIN
9.4 MI EAST OF LA 154, Bienville, LA
Built 1972 Load: 20.0 t ADT: 1,558
Wallace Rd
PoorOver: Stillhouse Bayou Trib
0.4 M SOUTH OF LA 537, Bossier, LA
Built 1991 Load: 20.0 t ADT: 40
LA0002
PoorOver: BAYOU DELEMAR
1.44 MI EAST OF US 165, Morehouse, LA
Built 1955 Load: 20.0 t ADT: 2,815
C. RAWLS RD
PoorOver: PRAIRION BAYOU
0.92 MI NE INT. 42 O, Ouachita, LA
Built 1960 Load: 20.0 t ADT: 37
LA0107
PoorOver: WIGGINS BAYOU
4.31 MI. NORTH OF LA 115, Avoyelles, LA
Built 1953 Load: 20.0 t ADT: 3,354
LA0366
PoorOver: SANDY CREEK
.53 MI NORTH OF LA 8, Grant, LA
Built 1955 Load: 20.0 t ADT: 368
LA0485
PoorOver: TAPALCAT BAYOU
6.70 MI N OF JCT LA 1222, Natchitoches, LA
Built 1956 Load: 20.0 t ADT: 25
LA0463
PoorOver: BOGGY BRANCH
2.8 MI NORTH OF LA 10, Vernon, LA
Built 1944 Load: 20.0 t ADT: 482
US0167
PoorOver: BIG CREEK RELIEF
2.46 MILE NORTH OF LA 126, Winn, LA
Built 1952 Load: 20.0 t ADT: 5,107
Showing 12,151-12,200 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.