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
LA0977
FairOver: B.GROSSE TETE
LA0977, Iberville, LA
Built 1980 Load: 39.0 t ADT: 1,132
I0010
FairOver: I-10 RAMP
0.3 M E of LA 975, Iberville, LA
Built 1972 Load: 39.0 t ADT: 668
LA0421
FairOver: ALEXANDER CREEK E
1.5 M E of US 61&LA 421, West Feliciana, LA
Built 1971 Load: 39.0 t ADT: 739
LA0421
FairOver: DRY CREEK
4.16 MI S JCT US 61-LA421, West Feliciana, LA
Built 1982 Load: 39.0 t ADT: 739
LA0966
FairOver: THOMPSON CREEK TRIBUTARY
1.8 M E of LA 10&LA 955, West Feliciana, LA
Built 1982 Load: 39.0 t ADT: 857
LA0010
FairOver: NATALBANY CREEK
5.95 MI. EAST OF LA 37, St. Helena, LA
Built 1975 Load: 39.0 t ADT: 1,514
LA0016
FairOver: KILLIANS BRANCH
1.75M E JCT LA441 & LA16, St. Helena, LA
Built 1992 Load: 39.0 t ADT: 5,293
LA0016
FairOver: LITTLE NATALBANY RIVER
4.9M E JCT LA441 & LA16, St. Helena, LA
Built 1992 Load: 39.0 t ADT: 4,942
LA0016
FairOver: NATALBANY RIVER RELIEF
5.2M E JCT LA441 & LA16, St. Helena, LA
Built 1992 Load: 39.0 t ADT: 4,942
LA0016
FairOver: NATALBANY RIVER
5.4M E JCT LA441 & LA16, St. Helena, LA
Built 1992 Load: 39.0 t ADT: 4,942
US0190
FairOver: FAIRWAY DRIVE OVERPASS
US 190 LOG MI 4.62, St. Tammany, LA
Built 1987 Load: 39.0 t ADT: 27,870
US0190
FairOver: FAIRWAY DRIVE OVERPASS
US 190 LOG MI 4.62, St. Tammany, LA
Built 1987 Load: 39.0 t ADT: 66,360
I0010
FairOver: CANAL
0.4 M N OF US 190, St. Tammany, LA
Built 1966 Load: 39.0 t ADT: 55,785
I0010
FairOver: CANAL
0.4 M N OF US 190, St. Tammany, LA
Built 1966 Load: 39.0 t ADT: 1,600
LA1090
FairOver: LA 1090 OVER I-59
LA1090, St. Tammany, LA
Built 1963 Load: 39.0 t ADT: 9,260
LA0038
FairOver: TANGIPAHOA RIVER
LA0038, Tangipahoa, LA
Built 1974 Load: 39.0 t ADT: 3,120
LA1061
FairOver: SPRING CREEK
LA1061-2, Tangipahoa, LA
Built 1975 Load: 39.0 t ADT: 1,509
I0012
FairOver: TANGIPAHOA RIVER
I0012, Tangipahoa, LA
Built 1975 Load: 39.0 t ADT: 53,386
LA1054
FairOver: TANGIPAHOA R. RELIEF
0.8 M E OF US 51, Tangipahoa, LA
Built 1983 Load: 39.0 t ADT: 1,235
LA1049
FairOver: BUTTON CREEK
LA1049, Tangipahoa, LA
Built 1973 Load: 39.0 t ADT: 574
LA0010
FairOver: DRAIN
1.50 MILES EAST OF LA 450, Washington, LA
Built 1990 Load: 39.0 t ADT: 1,478
LA0060
FairOver: BOGUE LUSA CR
LA0060, Washington, LA
Built 1965 Load: 39.0 t ADT: 11,719
LA1072
FairOver: DRAIN
0.4 M E OF LA 16, Washington, LA
Built 1978 Load: 39.0 t ADT: 1,105
Bullard Ave
FairOver: DRAINAGE CANAL
.65 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 39.2 t
Bullard Ave
FairOver: DRAINAGE CANAL
0.7 MI SE OF LA 57, Orleans, LA
Built 1975 Load: 39.2 t
Pleasant Rd
FairOver: FOUR MILE BAYOU
1.8 MI N.E. OF LA 4, Bienville, LA
Built 1986 Load: 39.2 t ADT: 70
Bear Creek Rd
FairOver: BEAR CREEK ROAD
1.9 MI NORTH OF LA 507, Bienville, LA
Built 1986 Load: 39.2 t ADT: 150
COMMON ST
FairOver: KANSAS CITY SOUTHERN RR
0.1 MI N OF I-20, Caddo, LA
Built 1956 Load: 39.2 t ADT: 15,612
LA0175
FairOver: FRIERSON BRANCH
2.09 MI N OF I-49, De Soto, LA
Built 2014 Load: 39.2 t ADT: 1,142
Nash Rd
FairOver: CASTOR BAYOU
6.7 MI N. OF US 84, De Soto, LA
Built 1985 Load: 39.2 t ADT: 397
Red Bayou Rd
FairOver: DOLET BAYOU
0.46 MI EAST OF LA 177, De Soto, LA
Built 1986 Load: 39.2 t ADT: 30
Lake Rd
FairOver: COOLEY CREEK
2.8M SOUTH OF LA 7, Webster, LA
Built 1993 Load: 39.2 t ADT: 320
Blue Run Rd
FairOver: COW CREEK
0.41 MI E. OF LA 3008, Webster, LA
Built 1985 Load: 39.2 t ADT: 86
US0167
FairOver: SHEPHERD CREEK
3.4 MI SOUTH OF US 80, Lincoln, LA
Built 2005 Load: 39.2 t ADT: 8,681
US0167
FairOver: SHEPHERD CREEK
3.4 MI SOUTH OF US 80, Lincoln, LA
Built 2005 Load: 39.2 t ADT: 5,350
HOLLY RIDGE RD
FairOver: CAMP BAYOU CANAL
1.7 MI S of LA 835, Morehouse, LA
Built 2000 Load: 39.2 t ADT: 250
JONES RD
FairOver: CUT OFF BAYOU
JONES ROAD, Ouachita, LA
Built 1993 Load: 39.2 t ADT: 30
POLAND CROSSING
FairOver: BAYOU DARBONNE
4.2 MI S of LA 2, Union, LA
Built 2004 Load: 39.2 t ADT: 162
Leggitt Crossing
FairOver: ALLIGATOR BAYOU
.3 MI. SE. HWY. 17, West Carroll, LA
Built 1984 Load: 39.2 t ADT: 425
Mclemore Rd
FairOver: HURRICANE CREEK
2 Mi. S. of LA 588, West Carroll, LA
Built 1984 Load: 39.2 t ADT: 80
E. MCNEESE ST
FairOver: KAYOUCHE COULEE
0.96 MI. EAST OF LA 14, Calcasieu, LA
Built 2012 Load: 39.2 t ADT: 3,569
MCCOWN RD
FairOver: WEST FORK ENGLISH BAYOU
0.58 MI. EAST OF LA 397, Calcasieu, LA
Built 2012 Load: 39.2 t ADT: 1,856
MCCOWN RD
FairOver: WEST FORK ENGLISH BAYOU
2.54 MI. EAST OF LA 397, Calcasieu, LA
Built 2012 Load: 39.2 t ADT: 815
Bordino Crossing
FairOver: BAYOU DES GLAISES
0.01 MI. EAST OF LA 451, Avoyelles, LA
Built 1985 Load: 39.2 t ADT: 80
FORESTRY ROAD
FairOver: REAUGAULIE CREEK
FORT POLK, Natchitoches, LA
Built 2005 Load: 39.2 t ADT: 40
Airline Dr
FairOver: Willow Chute Bayou
2.7 MI NORTH OF LA 3105, Bossier, LA
Built 1993 Load: 39.5 t ADT: 19,000
CYPRESS SCHOOL RD
FairOver: CYPRESS CREEK
2 MI W LUNA, Ouachita, LA
Built 1984 Load: 39.5 t ADT: 235
DOWNING PINES RD
FairOver: CONSTITUTION DRIVE
0.08 MI S of I-20, Ouachita, LA
Built 2000 Load: 39.5 t
N CARPENTERS ROAD
FairOver: FLAT CREEK
3.5 MI S OF LA 26, Allen, LA
Built 2019 Load: 39.5 t ADT: 232
CHERRY WITCHIE RD
FairOver: CHERRY WINCHE CREEK
0.6 MI. E of SAM CLOUD RD, Allen, LA
Built 2018 Load: 39.5 t ADT: 321
Showing 4,951-5,000 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.