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
LA0063
FairOver: CREEK
1.3 M NW OF LA 1019, Livingston, LA
Built 1963 Load: 24.5 t ADT: 1,234
LA1037
FairOver: BLOOD RIVER
LA1037, Livingston, LA
Built 1961 Load: 24.5 t ADT: 1,730
LA0037
FairOver: GLASS BRANCH
2.1 M SW OF LA 10, St. Helena, LA
Built 1960 Load: 24.5 t ADT: 1,781
LA0448
FairOver: ROCKY CREEK
LA0448, St. Helena, LA
Built 1962 Load: 24.5 t ADT: 547
LA0022
FairOver: CREEK
3.2 M W OF LA 445, Tangipahoa, LA
Built 1938 Load: 24.5 t ADT: 12,900
LA1064
FairOver: NATALBANY RIVER
LA1064, Tangipahoa, LA
Built 1957 Load: 24.5 t ADT: 2,854
LA0038
FairOver: SILVER CREEK
LA0038, Washington, LA
Built 1952 Load: 24.5 t ADT: 1,706
LA0438
FairOver: DRAIN
0.8 M W OF LA 25, Washington, LA
Built 1967 Load: 24.5 t ADT: 688
LA0438
FairOver: DRAIN
0.6 M W OF LA 25, Washington, LA
Built 1967 Load: 24.5 t ADT: 688
VETERANS BLVD EB
FairOver: BONNABEL CANAL
0.5 MI. E OF CAUSEWAY, Jefferson, LA
Built 1960 Load: 24.6 t ADT: 19,550
LAKESHORE DR
FairOver: ORLEANS AVENUE CANAL
0.03 MI W OF MARCONI DR, Orleans, LA
Built 2003 Load: 24.6 t
Savanne Rd
FairOver: BLACK BAYOU
0.01 MI NE OF LA 182, Terrebonne, LA
Built 2001 Load: 24.6 t ADT: 2,114
LA0013
FairOver: CREEK
1.1 MI NORTH OF US 90, Acadia, LA
Built 1957 Load: 24.6 t ADT: 8,810
LA1120
FairOver: CANAL
6.1 miles North of I-10., Acadia, LA
Built 1974 Load: 24.6 t ADT: 801
LA0320
FairOver: TETE BAYOU
1 MI EAST OF LA 87, Iberia, LA
Built 1972 Load: 24.6 t ADT: 3,241
Jefferson Island
FairOver: Parc Perdu Bayou
3.0 Mi. W. of US 90, Iberia, LA
Built 1960 Load: 24.6 t ADT: 2,868
US0090
FairOver: VACHERIE CANAL
1.4 MI EAST OF LA 318, St. Mary, LA
Built 1978 Load: 24.6 t ADT: 8,073
LA0697
FairOver: COULEE KENNYS
0.3 MI W OF LA 167, Vermilion, LA
Built 1976 Load: 24.6 t ADT: 970
Boat Shop Rd
FairOver: TIGER BAYOU
1.3 Mi W of La 331, Vermilion, LA
Built 1970 Load: 24.6 t ADT: 350
LA0157
FairOver: CYPRESS BAYOU TRIBUTARY
1.71 MI NORTH OF LA 2, Bossier, LA
Built 1986 Load: 24.6 t ADT: 1,016
LA0154
FairOver: RED BRANCH
.9 MI NORTH OF LA 157, Bossier, LA
Built 1979 Load: 24.6 t ADT: 3,124
LA0612
FairOver: FLAT RIVER
1.1 MI E OF US 71(LA0612), Bossier, LA
Built 1982 Load: 24.6 t ADT: 8,332
Deen Point Rd
FairOver: Flat River Bayou
3.2 MI E OF HWY 3, Bossier, LA
Built 1992 Load: 24.6 t ADT: 130
Powell at Broadway
FairOver: HOLLYWOOD DITCH
0.2 MI EAST OF KENNEDY AV, Caddo, LA
Built 1974 Load: 24.6 t ADT: 320
MAYFIELD ROAD
FairOver: HOLLYWOOD DITCH
0.2 MI EAST OF KENNEDY AV, Caddo, LA
Built 1973 Load: 24.6 t ADT: 280
MONTANA ST
FairOver: COOPER ROAD DITCH
0.2 M N OF LA3194, Caddo, LA
Built 1982 Load: 24.6 t ADT: 650
LA0002
FairOver: LICK CREEK
.7 MI EAST OF LA 802, Webster, LA
Built 1979 Load: 24.6 t ADT: 1,540
LA0577
FairOver: DIVERSION CHANNEL
.1 MI NORTH OF LA 610, Madison, LA
Built 1962 Load: 24.6 t ADT: 914
LA0590
FairOver: CREEK
2.35 MI EAST OF US 425, Morehouse, LA
Built 1970 Load: 24.6 t ADT: 805
DELCHO RD
FairOver: DRY FORK CREEK
0.5 MI W OF US 425, Richland, LA
Built 2016 Load: 24.6 t ADT: 103
US0167
FairOver: MIDDLE SLOUGH
1.7 MI SOUTH OF LA 15, Union, LA
Built 1952 Load: 24.6 t ADT: 422
W. LINCOLN RD
FairOver: CANAL
0.9 MI W OF LA 385, Calcasieu, LA
Built 1995 Load: 24.6 t ADT: 2,124
RAOUL ROAD
FairOver: DRAIN
1.0 MI W OF LA 101, Jefferson Davis, LA
Built 1973 Load: 24.6 t ADT: 30
CARL HOPPE ROAD
FairOver: BAYOU
0.5 MI E of LA 383, Jefferson Davis, LA
Built 1979 Load: 24.6 t ADT: 30
LA0115
FairOver: BAYOU DULAC
7.91 MILES NORTH OF LA 29, Avoyelles, LA
Built 1950 Load: 24.6 t ADT: 3,936
LA1181
FairOver: BORROW PIT CANAL
4.31 M E OF W JCT LA 1182, Avoyelles, LA
Built 1979 Load: 24.6 t ADT: 1,716
FDR 155
FairOver: GUYNES BRANCH
NO DATA ENTERED, Grant, LA
Built 1962 Load: 24.6 t ADT: 15
FDR 556
FairOver: PRAIRIE CREEK
LOGMI 1.56 FR 546 TO, Grant, LA
Built 1962 Load: 24.6 t ADT: 79
FDR 556
FairOver: CREEK
LOG MI 0.54 FR 546 T, Grant, LA
Built 1960 Load: 24.6 t ADT: 40
Lee Bridge Rd
FairOver: FLAGON BAYOU
1.99 MI. NE OF LA 116, Rapides, LA
Built 1991 Load: 24.6 t ADT: 60
US0171
FairOver: MIDDLE RELIEF
1.24 MI. NORTH OF LA 120, Sabine, LA
Built 1963 Load: 24.6 t ADT: 4,790
NONA ST
FairOver: CASTOR BAYOU TRIB.
0.58 MILES WEST OF US 171, Vernon, LA
Built 1977 Load: 24.6 t ADT: 2,000
LA0875
FairOver: CREEK
.8 MI WEST OF LA 15, Franklin, LA
Built 1974 Load: 24.6 t ADT: 44
LA0875
FairOver: CREEK
.3 MI WEST OF LA 15, Franklin, LA
Built 1974 Load: 24.6 t ADT: 44
LA0019
FairOver: LITTLE REDWOOD CK
LA0019, East Feliciana, LA
Built 1951 Load: 24.6 t ADT: 3,332
Honey Island Swamp
FairOver: WOOLY BAYOU
1.4M EAST OF I-59, St. Tammany, LA
Built 1984 Load: 24.6 t
Sandy acres Rd
FairOver: CREEK
0.2M S OF WEINBERGER RD, Tangipahoa, LA
Built 1993 Load: 24.6 t ADT: 8
US0090-B
FairOver: RAMP MA-2
.7 MI EAST OF LA 23, Jefferson, LA
Built 1985 Load: 24.9 t ADT: 15,955
LA3134
FairOver: LA45;LA303;ICWW
.3 MI SOUTH OF LA 301, Jefferson, LA
Built 1976 Load: 24.9 t ADT: 7,042
LAPALCO BLVD
FairOver: VERRET CANAL
0.3MI.E.OF MANHATTAN, Jefferson, LA
Built 1976 Load: 24.9 t ADT: 30,000
Showing 1,901-1,950 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.